diff options
Diffstat (limited to 'mysql-test/r')
105 files changed, 50758 insertions, 1118 deletions
diff --git a/mysql-test/r/alter_table_online.result b/mysql-test/r/alter_table_online.result new file mode 100644 index 00000000000..83e82191541 --- /dev/null +++ b/mysql-test/r/alter_table_online.result @@ -0,0 +1,74 @@ +drop table if exists t1,t2,t3; +create table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b')); +insert into t1 (a) values (1),(2),(3); +alter online table t1 modify b int default 5; +alter online table t1 change b new_name int; +alter online table t1 modify e enum('a','b','c'); +alter online table t1 comment "new comment"; +alter online table t1 rename to t2; +alter online table t2 rename to t1; +drop table t1; +create temporary table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b')); +insert into t1 (a) values (1),(2),(3); +alter online table t1 modify b int default 5; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 change b new_name int; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify e enum('a','b','c'); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 comment "new comment"; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 rename to t2; +ERROR HY000: Can't execute the given 'ALTER' command as online +drop table t1; +create table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b')); +insert into t1 (a) values (1),(2),(3); +alter online table t1 drop column b, add b int; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify b bigint; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify e enum('c','a','b'); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify c varchar(50); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify c varchar(100); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 add f int; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 engine=memory; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter table t1 engine=innodb; +alter table t1 add index (b); +alter online table t1 add index c (c); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 drop index b; +ERROR HY000: Can't execute the given 'ALTER' command as online +drop table t1; +create temporary table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b')); +insert into t1 (a) values (1),(2),(3); +alter online table t1 drop column b, add b int; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify b bigint; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify e enum('c','a','b'); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify c varchar(50); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 modify c varchar(100); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 add f int; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 engine=memory; +ERROR HY000: Can't execute the given 'ALTER' command as online +alter table t1 engine=innodb; +alter table t1 add index (b); +alter online table t1 add index c (c); +ERROR HY000: Can't execute the given 'ALTER' command as online +alter online table t1 drop index b; +ERROR HY000: Can't execute the given 'ALTER' command as online +drop table t1; +create table t1 (a int not null primary key, b int, c varchar(80)); +create table t2 (a int not null primary key, b int, c varchar(80)); +create table t3 (a int not null primary key, b int, c varchar(80)) engine=merge UNION=(t1); +alter online table t3 union=(t1,t2); +drop table t1,t2,t3; diff --git a/mysql-test/r/archive_gis.result b/mysql-test/r/archive_gis.result index 178c5716911..af231ad6ce4 100644 --- a/mysql-test/r/archive_gis.result +++ b/mysql-test/r/archive_gis.result @@ -403,7 +403,7 @@ Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE g1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -1 SIMPLE g2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +1 SIMPLE g2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid` DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry; diff --git a/mysql-test/r/compare.result b/mysql-test/r/compare.result index 796821a87bd..75a6a38fadc 100644 --- a/mysql-test/r/compare.result +++ b/mysql-test/r/compare.result @@ -88,7 +88,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra Warnings: Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,(select count(0) from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t2`.`a`) and (concat(`test`.`t1`.`b`,`test`.`t1`.`c`) = concat('0',`test`.`t2`.`a`,'01')))) AS `x` from `test`.`t2` order by `test`.`t2`.`a` +Note 1003 select `test`.`t2`.`a` AS `a`,<expr_cache><`test`.`t2`.`a`>((select count(0) from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t2`.`a`) and (concat(`test`.`t1`.`b`,`test`.`t1`.`c`) = concat('0',`test`.`t2`.`a`,'01'))))) AS `x` from `test`.`t2` order by `test`.`t2`.`a` DROP TABLE t1,t2; CREATE TABLE t1 (a TIMESTAMP); INSERT INTO t1 VALUES (NOW()),(NOW()),(NOW()); diff --git a/mysql-test/r/compress.result b/mysql-test/r/compress.result index 1d3752f09e7..4c1c49bf3e0 100644 --- a/mysql-test/r/compress.result +++ b/mysql-test/r/compress.result @@ -189,37 +189,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1395,15 +1395,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1419,15 +1419,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1435,7 +1435,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result index e871d9526ca..aab2ba0cad7 100644 --- a/mysql-test/r/create.result +++ b/mysql-test/r/create.result @@ -104,7 +104,7 @@ insert into t1 (b) values ("hello"),("my"),("world"); create table t2 (key (b)) select * from t1; explain select * from t2 where b="world"; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref B B 21 const 1 Using where +1 SIMPLE t2 ref B B 21 const 1 Using index condition select * from t2 where b="world"; a B 3 world diff --git a/mysql-test/r/ctype_collate.result b/mysql-test/r/ctype_collate.result index b42094550bd..8b1a7957229 100644 --- a/mysql-test/r/ctype_collate.result +++ b/mysql-test/r/ctype_collate.result @@ -566,31 +566,31 @@ INSERT INTO t1 VALUES ('i','i'); INSERT INTO t1 VALUES ('j','j'); EXPLAIN SELECT * FROM t1 WHERE s1='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref s1 s1 11 const 1 Using where +1 SIMPLE t1 ref s1 s1 11 const 1 Using index condition EXPLAIN SELECT * FROM t1 WHERE s2='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref s2 s2 11 const 1 Using where +1 SIMPLE t1 ref s2 s2 11 const 1 Using index condition EXPLAIN SELECT * FROM t1 WHERE s1='a' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref s1 s1 11 const 1 Using where +1 SIMPLE t1 ref s1 s1 11 const 1 Using index condition EXPLAIN SELECT * FROM t1 WHERE s2='a' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where EXPLAIN SELECT * FROM t1 WHERE s1 BETWEEN 'a' AND 'b' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range s1 s1 11 NULL 2 Using where +1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE s2 BETWEEN 'a' AND 'b' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where EXPLAIN SELECT * FROM t1 WHERE s1 IN ('a','b' COLLATE latin1_german1_ci); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range s1 s1 11 NULL 2 Using where +1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE s2 IN ('a','b' COLLATE latin1_german1_ci); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where EXPLAIN SELECT * FROM t1 WHERE s1 LIKE 'a' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range s1 s1 11 NULL 1 Using where +1 SIMPLE t1 range s1 s1 11 NULL 1 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE s2 LIKE 'a' COLLATE latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where diff --git a/mysql-test/r/ctype_cp932_binlog_stm.result b/mysql-test/r/ctype_cp932_binlog_stm.result index 1841cc3ef69..6e4432c3091 100644 --- a/mysql-test/r/ctype_cp932_binlog_stm.result +++ b/mysql-test/r/ctype_cp932_binlog_stm.result @@ -44,8 +44,8 @@ master-bin.000001 # Query # # use `test`; INSERT INTO t4 VALUES ( NAME_CONST('in master-bin.000001 # Query # # use `test`; DROP PROCEDURE bug18293 master-bin.000001 # Query # # use `test`; DROP TABLE t4 End of 5.0 tests -call mtr.add_suppression("Error in Log_event::read_log_event\\\(\\\): 'Sanity check failed', data_len: 258, event_type: 49"); -SHOW BINLOG EVENTS FROM 365; +call mtr.add_suppression("Error in Log_event::read_log_event\\\(\\\): 'Found invalid"); +SHOW BINLOG EVENTS FROM 504; ERROR HY000: Error when executing command SHOW BINLOG EVENTS: Wrong offset or I/O error Bug#44352 UPPER/LOWER function doesn't work correctly on cp932 and sjis environment. CREATE TABLE t1 (a varchar(16)) character set cp932; diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result index 63f199ad3e8..64677804646 100644 --- a/mysql-test/r/ctype_utf8.result +++ b/mysql-test/r/ctype_utf8.result @@ -1537,7 +1537,7 @@ explain select substr(Z.a,-1), Z.a from t1 as Y join t1 as Z on Y.a=Z.a order by 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE Y ALL NULL NULL NULL NULL 2 Using temporary; Using filesort -1 SIMPLE Z ALL NULL NULL NULL NULL 2 Using where; Using join buffer +1 SIMPLE Z ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) select substr(Z.a,-1), Z.a from t1 as Y join t1 as Z on Y.a=Z.a order by 1; substr(Z.a,-1) a 3 123 diff --git a/mysql-test/r/derived.result b/mysql-test/r/derived.result index 61f1db9989f..043231fd268 100644 --- a/mysql-test/r/derived.result +++ b/mysql-test/r/derived.result @@ -58,7 +58,7 @@ a b a b explain select * from t1 as x1, (select * from t1) as x2; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY x1 ALL NULL NULL NULL NULL 4 -1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4 Using join buffer +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4 Using join buffer (flat, BNL join) 2 DERIVED t1 ALL NULL NULL NULL NULL 4 drop table if exists t2,t3; select * from (select 1) as a; @@ -189,13 +189,13 @@ pla_id test explain SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id FROM t1 m2 INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY m2 ALL NULL NULL NULL NULL 9 -1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 2 DERIVED mp ALL NULL NULL NULL NULL 9 Using temporary; Using filesort 2 DERIVED m1 eq_ref PRIMARY PRIMARY 3 test.mp.mat_id 1 explain SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2 INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY m2 ALL NULL NULL NULL NULL 9 -1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 2 DERIVED mp ALL NULL NULL NULL NULL 9 Using temporary; Using filesort 2 DERIVED m1 eq_ref PRIMARY PRIMARY 3 test.mp.mat_id 1 drop table t1,t2; @@ -246,7 +246,7 @@ a a explain select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 -1 PRIMARY <derived4> ALL NULL NULL NULL NULL 2 Using join buffer +1 PRIMARY <derived4> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) 4 DERIVED t1 ALL NULL NULL NULL NULL 2 5 UNION t1 ALL NULL NULL NULL NULL 2 NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL @@ -313,7 +313,7 @@ explain SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 Using temporary; Using filesort 2 DERIVED x ALL NULL NULL NULL NULL 17 Using temporary; Using filesort -2 DERIVED y ALL NULL NULL NULL NULL 17 Using where; Using join buffer +2 DERIVED y ALL NULL NULL NULL NULL 17 Using where; Using join buffer (flat, BNL join) drop table t1; create table t2 (a int, b int, primary key (a)); insert into t2 values (1,7),(2,7); diff --git a/mysql-test/r/distinct.result b/mysql-test/r/distinct.result index b1cb70fa43c..ac87ea049a0 100644 --- a/mysql-test/r/distinct.result +++ b/mysql-test/r/distinct.result @@ -173,9 +173,9 @@ INSERT INTO t2 values (1),(2),(3); INSERT INTO t3 VALUES (1,'1'),(2,'2'),(1,'1'),(2,'2'); explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 4 Using temporary -1 SIMPLE t3 ref a a 5 test.t1.b 2 Using where; Using index -1 SIMPLE t2 index a a 4 NULL 5 Using where; Using index; Distinct; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 4 Using where; Using temporary +1 SIMPLE t3 ref a a 5 test.t1.b 2 Using index +1 SIMPLE t2 index a a 4 NULL 5 Using where; Using index; Distinct; Using join buffer (flat, BNL join) SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; a 1 @@ -190,7 +190,7 @@ insert into t3 select * from t4; explain select distinct t1.a from t1,t3 where t1.a=t3.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 4 Using index; Using temporary -1 SIMPLE t3 ref a a 5 test.t1.a 11 Using where; Using index; Distinct +1 SIMPLE t3 ref a a 5 test.t1.a 11 Using index; Distinct select distinct t1.a from t1,t3 where t1.a=t3.a; a 1 @@ -300,11 +300,11 @@ WHERE AND ((t1.id=j_lj_t3.id AND t3_lj.id IS NULL) OR (t1.id=t3.id AND t3.idx=2)); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index id id 4 NULL 2 Using index; Using temporary -1 SIMPLE t2 index id id 8 NULL 1 Using index; Distinct; Using join buffer -1 SIMPLE t3 index id id 8 NULL 1 Using index; Distinct; Using join buffer -1 SIMPLE j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer +1 SIMPLE t2 index id id 8 NULL 1 Using index; Distinct; Using join buffer (flat, BNL join) +1 SIMPLE t3 index id id 8 NULL 1 Using index; Distinct; Using join buffer (flat, BNL join) +1 SIMPLE j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (flat, BNL join) 1 SIMPLE t2_lj ref id id 4 test.j_lj_t2.id 1 Using where; Using index; Distinct -1 SIMPLE j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer +1 SIMPLE j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (flat, BNL join) 1 SIMPLE t3_lj ref id id 4 test.j_lj_t3.id 1 Using where; Using index; Distinct SELECT DISTINCT t1.id @@ -515,7 +515,7 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1_1 ALL NULL NULL NULL NULL 3 Using temporary -1 SIMPLE t1_2 index NULL PRIMARY 4 NULL 3 Using index; Distinct; Using join buffer +1 SIMPLE t1_2 index NULL PRIMARY 4 NULL 3 Using index; Distinct; Using join buffer (flat, BNL join) EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2 WHERE t1_1.a = t1_2.a; id select_type table type possible_keys key key_len ref rows Extra diff --git a/mysql-test/r/explain.result b/mysql-test/r/explain.result index 4bc6c0409f3..4bcdf7344a7 100644 --- a/mysql-test/r/explain.result +++ b/mysql-test/r/explain.result @@ -13,7 +13,7 @@ id str 3 foo explain select * from t1 where str is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref str str 11 const 1 Using where +1 SIMPLE t1 ref str str 11 const 1 Using index condition explain select * from t1 where str="foo"; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const str str 11 const 1 @@ -50,7 +50,7 @@ insert into ÔÁ (ËÏÌ0) values (1); insert into ÔÁ (ËÏÌ0) values (2); explain select ËÏÌ0 from ÔÁ where ËÏÌ0=1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE ÔÁ ref ÉÎÄ0,ÉÎÄ01 ÉÎÄ0 5 const 1 Using where; Using index +1 SIMPLE ÔÁ ref ÉÎÄ0,ÉÎÄ01 ÉÎÄ0 5 const 1 Using index drop table ÔÁÂ; set names latin1; select 3 into @v1; @@ -116,7 +116,7 @@ FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1` EXPLAIN EXTENDED SELECT 1 @@ -124,7 +124,7 @@ FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1` prepare s1 from @@ -134,7 +134,7 @@ execute s1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1` prepare s1 from @@ -144,14 +144,14 @@ execute s1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1` execute s1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1` DROP TABLE t1,t2; @@ -195,16 +195,16 @@ insert into t2 values ('2001-01-01 1:1:1'), ('2001-01-01 1:1:1'); flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL ); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY INNR ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where; Start temporary +1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join) flush tables; SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL ); dt flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY INNR ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where; Start temporary +1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join) flush tables; SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); dt @@ -224,7 +224,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 -Note 1003 select (select 1 from `test`.`t2` where (`test`.`t2`.`d` = NULL)) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` +Note 1003 select <expr_cache><NULL>((select 1 from `test`.`t2` where (`test`.`t2`.`d` = NULL))) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` DROP TABLE t1, t2; # # Bug #48419: another explain crash.. @@ -298,3 +298,18 @@ id select_type table type possible_keys key key_len ref rows Extra DEALLOCATE PREPARE stmt; DROP TABLE t1; End of 5.1 tests. +# +# Bug#776295: EXPLAIN EXTENDED with always false multiple equality +# in the WHERE condition of a derived table +# +CREATE TABLE t1 (a int) ; +CREATE TABLE t2 (a int) ; +INSERT INTO t2 VALUES (8); +EXPLAIN EXTENDED +SELECT * FROM ( SELECT t1.a FROM t1,t2 WHERE t2.a = t1.a ) AS t; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 0 0.00 const row not found +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table +Warnings: +Note 1003 select NULL AS `a` from (select NULL AS `a` from `test`.`t1` join `test`.`t2` where 0) `t` +DROP TABLE t1,t2; diff --git a/mysql-test/r/flush.result b/mysql-test/r/flush.result index b978304f59d..d575346a140 100644 --- a/mysql-test/r/flush.result +++ b/mysql-test/r/flush.result @@ -6,7 +6,7 @@ insert into t2 values(3); select * from t1; n 3 -flush tables with read lock; +flush tables with read lock and disable checkpoint; drop table t2; ERROR HY000: Can't execute the query because you have a conflicting read lock drop table t2; diff --git a/mysql-test/r/func_concat.result b/mysql-test/r/func_concat.result index fae8979a6e7..925158ab129 100644 --- a/mysql-test/r/func_concat.result +++ b/mysql-test/r/func_concat.result @@ -118,7 +118,7 @@ EXPLAIN SELECT CONCAT('gui_', t2.a), t1.d FROM t2 LEFT JOIN t1 ON t1.a = CONCAT('gui_', t2.a) AND t1.b = 'a' AND t1.c = 'b'; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index NULL PRIMARY 102 NULL 3 Using index -1 SIMPLE t1 eq_ref PRIMARY,a PRIMARY 318 func,const,const 1 +1 SIMPLE t1 eq_ref PRIMARY,a PRIMARY 318 func,const,const 1 Using where DROP TABLE t1, t2; # # Bug #50096: CONCAT_WS inside procedure returning wrong data diff --git a/mysql-test/r/func_gconcat.result b/mysql-test/r/func_gconcat.result index 4a79a15a2b6..6604446ed8d 100644 --- a/mysql-test/r/func_gconcat.result +++ b/mysql-test/r/func_gconcat.result @@ -986,7 +986,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort; Distinct -2 DERIVED td ALL NULL NULL NULL NULL 2 100.00 Distinct; Using join buffer +2 DERIVED td ALL NULL NULL NULL NULL 2 100.00 Distinct; Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select distinct group_concat(`test`.`td`.`f1` separator ',') AS `GROUP_CONCAT(td.f1)` from `test`.`t1` join `test`.`t1` `td` group by `test`.`td`.`f1`) `d` join `test`.`t1` SELECT 1 FROM @@ -1007,7 +1007,7 @@ t1 t2, t1 GROUP BY t1.a) AS d; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select 1 AS `1` from (select group_concat(`test`.`t1`.`a` order by `test`.`t1`.`a` ASC separator ',') AS `GROUP_CONCAT(t1.a ORDER BY t1.a ASC)` from `test`.`t1` `t2` join `test`.`t1` group by `test`.`t1`.`a`) `d` DROP TABLE t1; diff --git a/mysql-test/r/func_group.result b/mysql-test/r/func_group.result index b90eb2a4c0f..580f00035c6 100644 --- a/mysql-test/r/func_group.result +++ b/mysql-test/r/func_group.result @@ -614,7 +614,7 @@ explain select max(t1.a3), min(t2.a2) from t1, t2 where t1.a2 = 2 and t1.a3 < 'MIN' and t2.a3 > 'CA'; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 range k1 k1 7 NULL 1 Using where; Using index -1 SIMPLE t2 range k1 k1 3 NULL 4 Using where; Using index; Using join buffer +1 SIMPLE t2 range k1 k1 3 NULL 4 Using where; Using index; Using join buffer (flat, BNL join) explain select min(a4 - 0.01) from t1; id select_type table type possible_keys key key_len ref rows Extra @@ -651,7 +651,7 @@ explain select concat(min(t1.a1),min(t2.a4)) from t1, t2 where t2.a4 <> 'AME'; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range k2 k2 4 NULL 6 Using where; Using index -1 SIMPLE t1 index NULL PRIMARY 3 NULL 15 Using index; Using join buffer +1 SIMPLE t1 index NULL PRIMARY 3 NULL 15 Using index; Using join buffer (flat, BNL join) drop table t1, t2; create table t1 (a char(10)); insert into t1 values ('a'),('b'),('c'); @@ -1333,7 +1333,7 @@ CREATE TABLE t2( a INT, b INT, c INT, KEY(a, b) ); INSERT INTO t2 ( a, b, c ) VALUES ( 1, NULL, 2 ), ( 1, 3, 4 ), ( 1, 4, 4 ); EXPLAIN SELECT MIN(b), MIN(c) FROM t2 WHERE a = 1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref a a 5 const 2 Using where +1 SIMPLE t2 ref a a 5 const 2 SELECT MIN(b), MIN(c) FROM t2 WHERE a = 1; MIN(b) MIN(c) 3 2 @@ -1758,3 +1758,154 @@ MAX(f1) DROP TABLE t1; # End of 5.1 tests +# +# BUG#46680 - Assertion failed in file item_subselect.cc, +# line 305 crashing on HAVING subquery +# +# Create tables +# +CREATE TABLE t1 ( +pk INT, +v VARCHAR(1) DEFAULT NULL, +PRIMARY KEY(pk) +); +CREATE TABLE t2 LIKE t1; +CREATE TABLE t3 LIKE t1; +CREATE TABLE empty1 (a int); +INSERT INTO t1 VALUES (1,'c'),(2,NULL); +INSERT INTO t2 VALUES (3,'m'),(4,NULL); +INSERT INTO t3 VALUES (1,'n'); + +# +# 1) Test that subquery materialization is setup for query with +# premature optimize() exit due to "Impossible WHERE" +# +SELECT MIN(t2.pk) +FROM t2 JOIN t1 ON t1.pk=t2.pk +WHERE 'j' +HAVING ('m') IN ( +SELECT v +FROM t2); +MIN(t2.pk) +NULL +Warnings: +Warning 1292 Truncated incorrect INTEGER value: 'j' + +EXPLAIN +SELECT MIN(t2.pk) +FROM t2 JOIN t1 ON t1.pk=t2.pk +WHERE 'j' +HAVING ('m') IN ( +SELECT v +FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 +Warnings: +Warning 1292 Truncated incorrect INTEGER value: 'j' + +# +# 2) Test that subquery materialization is setup for query with +# premature optimize() exit due to "No matching min/max row" +# +SELECT MIN(t2.pk) +FROM t2 +WHERE t2.pk>10 +HAVING ('m') IN ( +SELECT v +FROM t2); +MIN(t2.pk) +NULL + +EXPLAIN +SELECT MIN(t2.pk) +FROM t2 +WHERE t2.pk>10 +HAVING ('m') IN ( +SELECT v +FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No matching min/max row +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 + +# +# 3) Test that subquery materialization is setup for query with +# premature optimize() exit due to "Select tables optimized away" +# +# NOTE: The result of this query is actually wrong; it should be NULL +# See BUG#47762. Even so, the test case is still needed to test +# that the HAVING subquery does not crash the server +# +SELECT MIN(pk) +FROM t1 +WHERE pk=NULL +HAVING ('m') IN ( +SELECT v +FROM t2); +MIN(pk) +NULL + +EXPLAIN +SELECT MIN(pk) +FROM t1 +WHERE pk=NULL +HAVING ('m') IN ( +SELECT v +FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 + +# +# 4) Test that subquery materialization is setup for query with +# premature optimize() exit due to "No matching row in const table" +# + +SELECT MIN(a) +FROM (SELECT a FROM empty1) tt +HAVING ('m') IN ( +SELECT v +FROM t2); +MIN(a) +NULL + +EXPLAIN +SELECT MIN(a) +FROM (SELECT a FROM empty1) tt +HAVING ('m') IN ( +SELECT v +FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found +3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 +2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table + +# +# 5) Test that subquery materialization is setup for query with +# premature optimize() exit due to "Impossible WHERE noticed +# after reading const tables" +# +SELECT min(t1.pk) +FROM t1 +WHERE t1.pk IN (SELECT 1 from t3 where pk>10) +HAVING ('m') IN ( +SELECT v +FROM t2); +min(t1.pk) +NULL + +EXPLAIN +SELECT min(t1.pk) +FROM t1 +WHERE t1.pk IN (SELECT 1 from t3 where pk>10) +HAVING ('m') IN ( +SELECT v +FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 +# +# Cleanup for BUG#46680 +# +DROP TABLE IF EXISTS t1,t2,t3,empty1; +End of 6.0 tests diff --git a/mysql-test/r/func_group_innodb.result b/mysql-test/r/func_group_innodb.result index 908e85c1652..11d8e390f1d 100644 --- a/mysql-test/r/func_group_innodb.result +++ b/mysql-test/r/func_group_innodb.result @@ -79,7 +79,7 @@ min(7) explain select min(7) from t2i join t1i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2i ALL NULL NULL NULL NULL 1 -1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer +1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) select min(7) from t2i join t1i; min(7) NULL @@ -95,7 +95,7 @@ max(7) explain select max(7) from t2i join t1i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2i ALL NULL NULL NULL NULL 1 -1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer +1 SIMPLE t1i ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) select max(7) from t2i join t1i; max(7) NULL diff --git a/mysql-test/r/func_in.result b/mysql-test/r/func_in.result index 0b6117581f3..49c6655a937 100644 --- a/mysql-test/r/func_in.result +++ b/mysql-test/r/func_in.result @@ -241,7 +241,7 @@ insert into t2 select C.a*2+1, 'yes' from t1 C; explain select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 5 NULL 12 Using where +1 SIMPLE t2 range a a 5 NULL 12 Using index condition; Rowid-ordered scan select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18); a filler 1 yes @@ -256,10 +256,10 @@ a filler 19 yes explain select * from t2 force index(a) where a NOT IN (2,2,2,2,2,2); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 5 NULL 912 Using where +1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Rowid-ordered scan explain select * from t2 force index(a) where a <> 2; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 5 NULL 912 Using where +1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Rowid-ordered scan drop table t2; create table t2 (a datetime, filler char(200), key(a)); insert into t2 select '2006-04-25 10:00:00' + interval C.a minute, @@ -271,7 +271,7 @@ select * from t2 where a NOT IN ( '2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00', '2006-04-25 10:06:00', '2006-04-25 10:08:00'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 9 NULL 18 Using where +1 SIMPLE t2 range a a 9 NULL 18 Using index condition; Rowid-ordered scan select * from t2 where a NOT IN ( '2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00', '2006-04-25 10:06:00', '2006-04-25 10:08:00'); @@ -295,7 +295,7 @@ insert into t2 values ('fon', '1'), ('fop','1'), ('barbaq','1'), ('barbas','1'), ('bazbazbay', '1'),('zz','1'); explain select * from t2 where a not in('foo','barbar', 'bazbazbaz'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 13 NULL 7 Using where +1 SIMPLE t2 range a a 13 NULL 7 Using index condition; Rowid-ordered scan drop table t2; create table t2 (a decimal(10,5), filler char(200), key(a)); insert into t2 select 345.67890, 'no' from t1 A, t1 B; @@ -306,7 +306,7 @@ insert into t2 values (0, '1'), (22334.123,'1'), (33333,'1'), explain select * from t2 where a not in (345.67890, 43245.34, 64224.56344); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range a a 7 NULL 7 Using where +1 SIMPLE t2 range a a 7 NULL 7 Using index condition; Rowid-ordered scan select * from t2 where a not in (345.67890, 43245.34, 64224.56344); a filler 0.00000 1 @@ -630,16 +630,16 @@ INSERT INTO t1 (c_int) SELECT 0 FROM t1; INSERT INTO t1 (c_int) SELECT 0 FROM t1; EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_int c_int 4 NULL 3 Using where +1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_int IN (NULL, 1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_int c_int 4 NULL 3 Using where +1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_int c_int 4 NULL 3 Using where +1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, NULL, 2, NULL, 3, NULL); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_int c_int 4 NULL 3 Using where +1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_int IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -648,10 +648,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using where +1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (NULL, 1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using where +1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -660,10 +660,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables EXPLAIN SELECT * FROM t1 WHERE c_float IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_float c_float 4 NULL 3 Using where +1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_float IN (NULL, 1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_float c_float 4 NULL 3 Using where +1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_float IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -672,10 +672,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables EXPLAIN SELECT * FROM t1 WHERE c_bit IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using where +1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_bit IN (NULL, 1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using where +1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_bit IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -685,11 +685,11 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT * FROM t1 WHERE c_date IN ('2009-09-01', '2009-09-02', '2009-09-03'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_date c_date 3 NULL 3 Using where +1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_date IN (NULL, '2009-09-01', '2009-09-02', '2009-09-03'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_date c_date 3 NULL 3 Using where +1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_date IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -699,11 +699,11 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT * FROM t1 WHERE c_datetime IN ('2009-09-01 00:00:01', '2009-09-02 00:00:01', '2009-09-03 00:00:01'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using where +1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_datetime IN (NULL, '2009-09-01 00:00:01', '2009-09-02 00:00:01', '2009-09-03 00:00:01'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using where +1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_datetime IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -713,11 +713,11 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT * FROM t1 WHERE c_timestamp IN ('2009-09-01 00:00:01', '2009-09-01 00:00:02', '2009-09-01 00:00:03'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using where +1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_timestamp IN (NULL, '2009-09-01 00:00:01', '2009-09-01 00:00:02', '2009-09-01 00:00:03'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using where +1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_timestamp IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -726,10 +726,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables EXPLAIN SELECT * FROM t1 WHERE c_year IN (1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_year c_year 1 NULL 3 Using where +1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_year IN (NULL, 1, 2, 3); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_year c_year 1 NULL 3 Using where +1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_year IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables @@ -738,10 +738,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables EXPLAIN SELECT * FROM t1 WHERE c_char IN ('1', '2', '3'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_char c_char 10 NULL 3 Using where +1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_char IN (NULL, '1', '2', '3'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c_char c_char 10 NULL 3 Using where +1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE c_char IN (NULL); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result index 8f4038e1239..0e08f759424 100644 --- a/mysql-test/r/func_str.result +++ b/mysql-test/r/func_str.result @@ -2550,12 +2550,12 @@ insert into t1 values (-1),(null); explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 -1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) 2 DERIVED t1 ALL NULL NULL NULL NULL 2 explain select 1 as a from t1,(select encode(f1,f1) as b from t1) a; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 -1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) 2 DERIVED t1 ALL NULL NULL NULL NULL 2 drop table t1; # diff --git a/mysql-test/r/gis.result b/mysql-test/r/gis.result index d82a86a6423..c1a73524f18 100644 --- a/mysql-test/r/gis.result +++ b/mysql-test/r/gis.result @@ -395,7 +395,7 @@ Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE g1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort -1 SIMPLE g2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer +1 SIMPLE g2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) Warnings: Note 1003 select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid` DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry; diff --git a/mysql-test/r/greedy_optimizer.result b/mysql-test/r/greedy_optimizer.result index c0012c297d1..b4844785318 100644 --- a/mysql-test/r/greedy_optimizer.result +++ b/mysql-test/r/greedy_optimizer.result @@ -121,11 +121,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -133,59 +133,59 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value @@ -201,11 +201,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -213,59 +213,59 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value @@ -277,11 +277,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -289,60 +289,60 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 @@ -353,11 +353,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -365,59 +365,59 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value Last_query_cost 289.418727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value @@ -433,11 +433,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -445,59 +445,59 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value @@ -509,11 +509,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -521,60 +521,60 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 @@ -585,11 +585,11 @@ select @@optimizer_search_depth; explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value @@ -597,59 +597,59 @@ Last_query_cost 821.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 821.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value Last_query_cost 794.837037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result index e8124855007..426e9a88262 100644 --- a/mysql-test/r/group_by.result +++ b/mysql-test/r/group_by.result @@ -537,11 +537,11 @@ a b explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort -1 SIMPLE t2 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b ORDER BY NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using temporary -1 SIMPLE t2 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) drop table t1,t2; create table t1 (a int, b int); insert into t1 values (1, 4),(10, 40),(1, 4),(10, 43),(1, 4),(10, 41),(1, 4),(10, 43),(1, 4); @@ -873,7 +873,7 @@ explain SELECT straight_join sql_no_cache v1.a, v1.b, v1.real_b from t2, v1 where t2.b=v1.a GROUP BY t2.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 index b b 2 NULL 10 Using index +1 SIMPLE t2 index b b 2 NULL 10 Using where; Using index 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 1 test.t2.b 1 SELECT straight_join sql_no_cache v1.a, v1.b, v1.real_b from t2, v1 where t2.b=v1.a GROUP BY t2.b; @@ -1542,8 +1542,9 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT 1 FROM t1 WHERE a IN (SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2)); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 index NULL PRIMARY 4 NULL 144 Using where; Using index -2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 144 Using where +1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index +1 PRIMARY subselect2 eq_ref unique_key unique_key 4 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 144 CREATE TABLE t2 (a INT, b INT, KEY(a)); INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4); EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2; @@ -1555,8 +1556,8 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT 1 FROM t2 WHERE a IN (SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2)); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index -2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 144 Using where +1 PRIMARY t2 index a a 5 NULL 4 Using index +1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t2) SHOW VARIABLES LIKE 'old'; Variable_name Value old OFF @@ -1742,7 +1743,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 -Note 1003 select (select `test`.`t1`.`a`) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by ((select `test`.`t1`.`a`) + 0) +Note 1003 select <expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by (<expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) + 0) EXPLAIN EXTENDED SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY -aa; id select_type table type possible_keys key key_len ref rows filtered Extra @@ -1750,7 +1751,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 -Note 1003 select (select `test`.`t1`.`a`) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by -((select `test`.`t1`.`a`)) +Note 1003 select <expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by -(<expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`))) # should return only one record SELECT (SELECT tt.a FROM t1 tt LIMIT 1) aa, COUNT(DISTINCT b) FROM t1 GROUP BY aa; @@ -1898,8 +1899,8 @@ SELECT a, AVG(t1.b), FROM t1 GROUP BY a; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 index NULL a 10 NULL 9 Using index -3 DEPENDENT SUBQUERY t12 ref a a 10 func,func 2 Using where -2 DEPENDENT SUBQUERY t11 ref a a 10 func,func 2 Using where +3 DEPENDENT SUBQUERY t12 ref a a 10 func,func 2 Using index condition +2 DEPENDENT SUBQUERY t11 ref a a 10 func,func 2 Using index condition SELECT a, AVG(t1.b), (SELECT t11.c FROM t1 t11 WHERE t11.a = t1.a AND t11.b = AVG(t1.b)) AS t11c, (SELECT t12.c FROM t1 t12 WHERE t12.a = t1.a AND t12.b = AVG(t1.b)) AS t12c diff --git a/mysql-test/r/group_min_max.result b/mysql-test/r/group_min_max.result index 6fef66b9d93..974521ec120 100644 --- a/mysql-test/r/group_min_max.result +++ b/mysql-test/r/group_min_max.result @@ -2256,7 +2256,7 @@ EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE a IN (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1_outer index NULL a 10 NULL 15 Using where; Using index -2 DEPENDENT SUBQUERY t1 index NULL a 10 NULL 1 Using index +2 SUBQUERY t1 range NULL a 5 NULL 8 Using index for group-by EXPLAIN SELECT 1 FROM t1 AS t1_outer GROUP BY a HAVING a > (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); id select_type table type possible_keys key key_len ref rows Extra @@ -2267,7 +2267,7 @@ ON t1_outer1.a = (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) AND t1_outer1.b = t1_outer2.b; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1_outer1 ref a a 5 const 1 Using where; Using index -1 PRIMARY t1_outer2 index NULL a 10 NULL 15 Using where; Using index; Using join buffer +1 PRIMARY t1_outer2 index NULL a 10 NULL 15 Using where; Using index; Using join buffer (flat, BNL join) 2 SUBQUERY t1 range NULL a 5 NULL 8 Using index for group-by EXPLAIN SELECT (SELECT (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) x FROM t1 AS t1_outer) x2 FROM t1 AS t1_outer2; @@ -2444,7 +2444,7 @@ a b 3 13 explain extended select sql_buffer_result a, max(b)+1 from t1 where a = 0 group by a; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 range PRIMARY,index PRIMARY 4 NULL 3 100.00 Using where; Using index for group-by; Using temporary +1 SIMPLE t1 ref PRIMARY,index PRIMARY 4 const 15 100.00 Using index; Using temporary Warnings: Note 1003 select sql_buffer_result `test`.`t1`.`a` AS `a`,(max(`test`.`t1`.`b`) + 1) AS `max(b)+1` from `test`.`t1` where (`test`.`t1`.`a` = 0) group by `test`.`t1`.`a` drop table t1; diff --git a/mysql-test/r/handlersocket.result b/mysql-test/r/handlersocket.result new file mode 100644 index 00000000000..dcea3c186b6 --- /dev/null +++ b/mysql-test/r/handlersocket.result @@ -0,0 +1,13 @@ +install plugin handlersocket soname 'handlersocket.so'; +select plugin_name, plugin_version, plugin_status, plugin_type, plugin_library, plugin_library_version, plugin_author, plugin_description plugin_license, plugin_maturity, plugin_auth_version from information_schema.plugins where plugin_name = 'handlersocket'; +plugin_name handlersocket +plugin_version 1.0 +plugin_status ACTIVE +plugin_type DAEMON +plugin_library handlersocket.so +plugin_library_version 0.0 +plugin_author higuchi dot akira at dena dot jp +plugin_license +plugin_maturity Unknown +plugin_auth_version Unknown +uninstall plugin handlersocket; diff --git a/mysql-test/r/heap.result b/mysql-test/r/heap.result index ddf675e2f73..fe0f5f39aca 100644 --- a/mysql-test/r/heap.result +++ b/mysql-test/r/heap.result @@ -204,7 +204,7 @@ key a (a) INSERT INTO t1 VALUES (10), (10), (10); EXPLAIN SELECT * FROM t1 WHERE a=10; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a a 5 const 3 Using where +1 SIMPLE t1 ref a a 5 const 3 SELECT * FROM t1 WHERE a=10; a 10 diff --git a/mysql-test/r/heap_btree.result b/mysql-test/r/heap_btree.result index 7ad0f212d99..fb26f98cdaf 100644 --- a/mysql-test/r/heap_btree.result +++ b/mysql-test/r/heap_btree.result @@ -344,3 +344,38 @@ INSERT INTO t1 VALUES(1),(1); DELETE a1 FROM t1 AS a1, t1 AS a2 WHERE a1.a=a2.a; DROP TABLE t1; End of 5.0 tests +# bit index in heap tables +create table t1 (a bit(63) not null) engine=heap; +insert into t1 values (869751),(736494),(226312),(802616),(728912); +alter table t1 add unique uniq_id using BTREE (a); +select 0+a from t1 where a > 736494; +0+a +802616 +869751 +explain select 0+a from t1 where a > 736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range uniq_id uniq_id 8 NULL 3 Using where +select 0+a from t1 where a = 736494; +0+a +736494 +explain select 0+a from t1 where a = 736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const uniq_id uniq_id 8 const 1 +select 0+a from t1 where a=869751 or a=736494; +0+a +736494 +869751 +explain select 0+a from t1 where a=869751 or a=736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range uniq_id uniq_id 8 NULL 2 Using where +select 0+a from t1 where a in (869751,736494,226312,802616); +0+a +226312 +736494 +802616 +869751 +explain select 0+a from t1 where a in (869751,736494,226312,802616); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range uniq_id uniq_id 8 NULL 4 Using where +drop table t1; +End of 5.3 tests diff --git a/mysql-test/r/heap_hash.result b/mysql-test/r/heap_hash.result index bae49af462f..ba7d79e491a 100644 --- a/mysql-test/r/heap_hash.result +++ b/mysql-test/r/heap_hash.result @@ -382,3 +382,38 @@ INSERT INTO t1 VALUES('A ', 'A '); ERROR 23000: Duplicate entry 'A -A ' for key 'key1' DROP TABLE t1; End of 5.0 tests +# bit index in heap tables +create table t1 (a bit(63) not null) engine=heap; +insert into t1 values (869751),(736494),(226312),(802616),(728912); +alter table t1 add unique uniq_id using HASH (a); +select 0+a from t1 where a > 736494; +0+a +869751 +802616 +explain select 0+a from t1 where a > 736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL uniq_id NULL NULL NULL 5 Using where +select 0+a from t1 where a = 736494; +0+a +736494 +explain select 0+a from t1 where a = 736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const uniq_id uniq_id 8 const 1 +select 0+a from t1 where a=869751 or a=736494; +0+a +736494 +869751 +explain select 0+a from t1 where a=869751 or a=736494; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range uniq_id uniq_id 8 NULL 2 Using where +select 0+a from t1 where a in (869751,736494,226312,802616); +0+a +226312 +736494 +802616 +869751 +explain select 0+a from t1 where a in (869751,736494,226312,802616); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range uniq_id uniq_id 8 NULL 4 Using where +drop table t1; +End of 5.3 tests diff --git a/mysql-test/r/index_intersect.result b/mysql-test/r/index_intersect.result new file mode 100644 index 00000000000..713674430cf --- /dev/null +++ b/mysql-test/r/index_intersect.result @@ -0,0 +1,1046 @@ +DROP TABLE IF EXISTS t1,t2,t3,t4; +DROP DATABASE IF EXISTS world; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +); +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +SELECT COUNT(*) FROM Country; +COUNT(*) +239 +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM CountryLanguage; +COUNT(*) +984 +CREATE INDEX Name ON City(Name); +SET SESSION optimizer_switch='index_merge_sort_intersection=on'; +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM City WHERE Name LIKE 'C%'; +COUNT(*) +281 +SELECT COUNT(*) FROM City WHERE Name LIKE 'M%'; +COUNT(*) +301 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 1500000; +COUNT(*) +129 +SELECT COUNT(*) FROM City WHERE Population > 300000; +COUNT(*) +1062 +SELECT COUNT(*) FROM City WHERE Population > 7000000; +COUNT(*) +14 +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Name,Population 35,4 NULL # Using sort_intersect(Name,Population); Using where +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 300000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 7000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Name Population 4 NULL # Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City +WHERE Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +131 Melbourne AUS 2865329 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +131 Melbourne AUS 2865329 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 300000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +1042 Madurai IND 977856 +1051 Meerut IND 753778 +1074 Mysore IND 480692 +1081 Moradabad IND 429214 +1098 Malegaon IND 342595 +131 Melbourne AUS 2865329 +1366 Mosul IRQ 879000 +1381 Mashhad IRN 1887405 +1465 Milano ITA 1300977 +1559 Matsuyama JPN 466133 +1560 Matsudo JPN 461126 +1578 Machida JPN 364197 +1595 Miyazaki JPN 303784 +1810 Montréal CAN 1016376 +1816 Mississauga CAN 608072 +1882 Mombasa KEN 461753 +1945 Mudanjiang CHN 570000 +2005 Ma´anshan CHN 305421 +215 Manaus BRA 1255049 +223 Maceió BRA 786288 +2259 MedellÃn COL 1861265 +2267 Manizales COL 337580 +2300 Mbuji-Mayi COD 806475 +2348 Masan KOR 441242 +2440 Monrovia LBR 850000 +2454 Macao MAC 437500 +2487 Marrakech MAR 621914 +2491 Meknès MAR 460000 +250 Mauá BRA 375055 +2523 Monterrey MEX 1108499 +2526 Mexicali MEX 764902 +2530 Mérida MEX 703324 +2537 Morelia MEX 619958 +2554 Matamoros MEX 416428 +2557 Mazatlán MEX 380265 +256 Moji das Cruzes BRA 339194 +2698 Maputo MOZ 1018938 +2699 Matola MOZ 424662 +2711 Mandalay MMR 885300 +2712 Moulmein (Mawlamyine) MMR 307900 +2734 Managua NIC 959000 +2756 Mushin NGA 333200 +2757 Maiduguri NGA 320000 +2826 Multan PAK 1182441 +2975 Marseille FRA 798430 +3070 Munich [München] DEU 1194560 +3086 Mannheim DEU 307730 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3214 Mogadishu SOM 997000 +3364 Mersin (Içel) TUR 587212 +3371 Malatya TUR 330312 +3434 Mykolajiv UKR 508000 +3435 Mariupol UKR 490000 +3438 Makijivka UKR 384000 +3492 Montevideo URY 1236000 +3520 Minsk BLR 1674000 +3522 Mogiljov BLR 356000 +3540 MaracaÃbo VEN 1304776 +3545 Maracay VEN 444443 +3547 MaturÃn VEN 319726 +3580 Moscow RUS 8389200 +3622 Magnitogorsk RUS 427900 +3625 Murmansk RUS 376300 +3636 Mahat?kala RUS 332800 +3810 Memphis USA 650100 +3811 Milwaukee USA 596974 +3834 Mesa USA 396375 +3837 Minneapolis USA 382618 +3839 Miami USA 362470 +462 Manchester GBR 430000 +653 Madrid ESP 2879052 +658 Málaga ESP 530553 +661 Murcia ESP 353504 +766 Manila PHL 1581082 +77 Mar del Plata ARG 512880 +778 Makati PHL 444867 +781 Marikina PHL 391170 +783 Muntinlupa PHL 379310 +786 Malabon PHL 338855 +80 Merlo ARG 463846 +83 Moreno ARG 356993 +87 Morón ARG 349246 +942 Medan IDN 1843919 +947 Malang IDN 716862 +962 Manado IDN 332288 +963 Mataram IDN 306600 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 300000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +1042 Madurai IND 977856 +1051 Meerut IND 753778 +1074 Mysore IND 480692 +1081 Moradabad IND 429214 +1098 Malegaon IND 342595 +131 Melbourne AUS 2865329 +1366 Mosul IRQ 879000 +1381 Mashhad IRN 1887405 +1465 Milano ITA 1300977 +1559 Matsuyama JPN 466133 +1560 Matsudo JPN 461126 +1578 Machida JPN 364197 +1595 Miyazaki JPN 303784 +1810 Montréal CAN 1016376 +1816 Mississauga CAN 608072 +1882 Mombasa KEN 461753 +1945 Mudanjiang CHN 570000 +2005 Ma´anshan CHN 305421 +215 Manaus BRA 1255049 +223 Maceió BRA 786288 +2259 MedellÃn COL 1861265 +2267 Manizales COL 337580 +2300 Mbuji-Mayi COD 806475 +2348 Masan KOR 441242 +2440 Monrovia LBR 850000 +2454 Macao MAC 437500 +2487 Marrakech MAR 621914 +2491 Meknès MAR 460000 +250 Mauá BRA 375055 +2523 Monterrey MEX 1108499 +2526 Mexicali MEX 764902 +2530 Mérida MEX 703324 +2537 Morelia MEX 619958 +2554 Matamoros MEX 416428 +2557 Mazatlán MEX 380265 +256 Moji das Cruzes BRA 339194 +2698 Maputo MOZ 1018938 +2699 Matola MOZ 424662 +2711 Mandalay MMR 885300 +2712 Moulmein (Mawlamyine) MMR 307900 +2734 Managua NIC 959000 +2756 Mushin NGA 333200 +2757 Maiduguri NGA 320000 +2826 Multan PAK 1182441 +2975 Marseille FRA 798430 +3070 Munich [München] DEU 1194560 +3086 Mannheim DEU 307730 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3214 Mogadishu SOM 997000 +3364 Mersin (Içel) TUR 587212 +3371 Malatya TUR 330312 +3434 Mykolajiv UKR 508000 +3435 Mariupol UKR 490000 +3438 Makijivka UKR 384000 +3492 Montevideo URY 1236000 +3520 Minsk BLR 1674000 +3522 Mogiljov BLR 356000 +3540 MaracaÃbo VEN 1304776 +3545 Maracay VEN 444443 +3547 MaturÃn VEN 319726 +3580 Moscow RUS 8389200 +3622 Magnitogorsk RUS 427900 +3625 Murmansk RUS 376300 +3636 Mahat?kala RUS 332800 +3810 Memphis USA 650100 +3811 Milwaukee USA 596974 +3834 Mesa USA 396375 +3837 Minneapolis USA 382618 +3839 Miami USA 362470 +462 Manchester GBR 430000 +653 Madrid ESP 2879052 +658 Málaga ESP 530553 +661 Murcia ESP 353504 +766 Manila PHL 1581082 +77 Mar del Plata ARG 512880 +778 Makati PHL 444867 +781 Marikina PHL 391170 +783 Muntinlupa PHL 379310 +786 Malabon PHL 338855 +80 Merlo ARG 463846 +83 Moreno ARG 356993 +87 Morón ARG 349246 +942 Medan IDN 1843919 +947 Malang IDN 716862 +962 Manado IDN 332288 +963 Mataram IDN 306600 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 7000000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +3580 Moscow RUS 8389200 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 7000000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +3580 Moscow RUS 8389200 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'M' AND 'N'; +COUNT(*) +301 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'G' AND 'J'; +COUNT(*) +408 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'G' AND 'K'; +COUNT(*) +512 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 500000; +COUNT(*) +539 +SELECT COUNT(*) FROM City WHERE Country LIKE 'C%'; +COUNT(*) +551 +SELECT COUNT(*) FROM City WHERE Country LIKE 'B%'; +COUNT(*) +339 +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Population 35,4 NULL # Using sort_intersect(Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Country 4,3 NULL # Using sort_intersect(Population,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +ID Name Country Population +1810 Montréal CAN 1016376 +2259 MedellÃn COL 1861265 +SELECT * FROM City +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +ID Name Country Population +1810 Montréal CAN 1016376 +2259 MedellÃn COL 1861265 +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1923 Jilin CHN 1040000 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1938 Jixi CHN 683885 +1944 Jinzhou CHN 570000 +1950 Hegang CHN 520000 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1923 Jilin CHN 1040000 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1938 Jixi CHN 683885 +1944 Jinzhou CHN 570000 +1950 Hegang CHN 520000 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 501 AND 1000; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 1 AND 500; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 2001 AND 2500; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 3701 AND 4000; +COUNT(*) +300 +SELECT COUNT(*) FROM City WHERE Population > 700000; +COUNT(*) +358 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 300000; +COUNT(*) +1062 +SELECT COUNT(*) FROM City WHERE Population > 600000; +COUNT(*) +428 +SELECT COUNT(*) FROM City WHERE Country LIKE 'C%'; +COUNT(*) +551 +SELECT COUNT(*) FROM City WHERE Country LIKE 'A%'; +COUNT(*) +107 +SELECT COUNT(*) FROM City WHERE Country LIKE 'H%'; +COUNT(*) +22 +SELECT COUNT(*) FROM City WHERE Country BETWEEN 'S' AND 'Z'; +COUNT(*) +682 +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country Country,Population 3,4 NULL # Using sort_intersect(Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country Country 3 NULL # Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3701 AND 4000 AND Population > 1000000 +AND Country BETWEEN 'S' AND 'Z'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country Population,PRIMARY 4,4 NULL # Using sort_intersect(Population,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +ID Name Country Population +554 Santiago de Chile CHL 4703954 +SELECT * FROM City +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +ID Name Country Population +554 Santiago de Chile CHL 4703954 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +ID Name Country Population +2409 Zagreb HRV 706770 +SELECT * FROM City +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +ID Name Country Population +2409 Zagreb HRV 706770 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 3701 AND 4000 AND Population > 700000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +SELECT * FROM City +WHERE ID BETWEEN 3701 AND 4000 AND Population > 700000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SET SESSION sort_buffer_size = 2048; +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Name,Population 35,4 NULL # Using sort_intersect(Name,Population); Using where +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Country 4,3 NULL # Using sort_intersect(Population,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country Country,Population 3,4 NULL # Using sort_intersect(Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +131 Melbourne AUS 2865329 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +1024 Mumbai (Bombay) IND 10500000 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 700000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1950 Hegang CHN 520000 +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SET SESSION sort_buffer_size = default; +DROP INDEX Country ON City; +CREATE INDEX CountryID ON City(Country,ID); +CREATE INDEX CountryName ON City(Country,Name); +EXPLAIN +SELECT * FROM City +WHERE Country LIKE 'M%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,CountryID,CountryName Population,CountryID 4,3 NULL # Using sort_intersect(Population,CountryID); Using where +EXPLAIN +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,CountryID,CountryName Population,CountryID 4,3 NULL # Using sort_intersect(Population,CountryID); Using where +EXPLAIN +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name,CountryID,CountryName CountryName,Population 38,4 NULL # Using sort_intersect(CountryName,Population); Using where +SELECT * FROM City USE INDEX () +WHERE Country LIKE 'M%' AND Population > 1000000; +ID Name Country Population +2464 Kuala Lumpur MYS 1297526 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +2516 Guadalajara MEX 1647720 +2517 Ecatepec de Morelos MEX 1620303 +2518 Puebla MEX 1346176 +2519 Nezahualcóyotl MEX 1224924 +2520 Juárez MEX 1217818 +2521 Tijuana MEX 1212232 +2522 León MEX 1133576 +2523 Monterrey MEX 1108499 +2524 Zapopan MEX 1002239 +2698 Maputo MOZ 1018938 +2710 Rangoon (Yangon) MMR 3361700 +SELECT * FROM City +WHERE Country LIKE 'M%' AND Population > 1000000; +ID Name Country Population +2464 Kuala Lumpur MYS 1297526 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +2516 Guadalajara MEX 1647720 +2517 Ecatepec de Morelos MEX 1620303 +2518 Puebla MEX 1346176 +2519 Nezahualcóyotl MEX 1224924 +2520 Juárez MEX 1217818 +2521 Tijuana MEX 1212232 +2522 León MEX 1133576 +2523 Monterrey MEX 1108499 +2524 Zapopan MEX 1002239 +2698 Maputo MOZ 1018938 +2710 Rangoon (Yangon) MMR 3361700 +SELECT * FROM City USE INDEX () +WHERE Country='CHN' AND Population > 1500000; +ID Name Country Population +1890 Shanghai CHN 9696300 +1891 Peking CHN 7472000 +1892 Chongqing CHN 6351600 +1893 Tianjin CHN 5286800 +1894 Wuhan CHN 4344600 +1895 Harbin CHN 4289800 +1896 Shenyang CHN 4265200 +1897 Kanton [Guangzhou] CHN 4256300 +1898 Chengdu CHN 3361500 +1899 Nanking [Nanjing] CHN 2870300 +1900 Changchun CHN 2812000 +1901 Xi´an CHN 2761400 +1902 Dalian CHN 2697000 +1903 Qingdao CHN 2596000 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1906 Zhengzhou CHN 2107200 +1907 Shijiazhuang CHN 2041500 +1908 Taiyuan CHN 1968400 +1909 Kunming CHN 1829500 +1910 Changsha CHN 1809800 +1911 Nanchang CHN 1691600 +1912 Fuzhou CHN 1593800 +1913 Lanzhou CHN 1565800 +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000; +ID Name Country Population +1890 Shanghai CHN 9696300 +1891 Peking CHN 7472000 +1892 Chongqing CHN 6351600 +1893 Tianjin CHN 5286800 +1894 Wuhan CHN 4344600 +1895 Harbin CHN 4289800 +1896 Shenyang CHN 4265200 +1897 Kanton [Guangzhou] CHN 4256300 +1898 Chengdu CHN 3361500 +1899 Nanking [Nanjing] CHN 2870300 +1900 Changchun CHN 2812000 +1901 Xi´an CHN 2761400 +1902 Dalian CHN 2697000 +1903 Qingdao CHN 2596000 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1906 Zhengzhou CHN 2107200 +1907 Shijiazhuang CHN 2041500 +1908 Taiyuan CHN 1968400 +1909 Kunming CHN 1829500 +1910 Changsha CHN 1809800 +1911 Nanchang CHN 1691600 +1912 Fuzhou CHN 1593800 +1913 Lanzhou CHN 1565800 +SELECT * FROM City USE INDEX () +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +ID Name Country Population +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +ID Name Country Population +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +EXPLAIN +SELECT * FROM City, Country +WHERE City.Name LIKE 'C%' AND City.Population > 1000000 AND +Country.Code=City.Country; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name,CountryID,CountryName Name,Population 35,4 NULL # Using sort_intersect(Name,Population); Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country # +DROP DATABASE world; +use test; +CREATE TABLE t1 ( +f1 int, +f4 varchar(32), +f5 int, +PRIMARY KEY (f1), +KEY (f4) +) ENGINE=InnoDB; +Warnings: +Warning 1286 Unknown table engine 'InnoDB' +Warning 1266 Using storage engine MyISAM for table 't1' +INSERT INTO t1 VALUES +(5,'H',1), (9,'g',0), (527,'i',0), (528,'y',1), (529,'S',6), +(530,'m',7), (531,'b',2), (532,'N',1), (533,'V',NULL), (534,'l',1), +(535,'M',0), (536,'w',1), (537,'j',5), (538,'l',0), (539,'n',2), +(540,'m',2), (541,'r',2), (542,'l',2), (543,'h',3),(544,'o',0), +(956,'h',0), (957,'g',0), (958,'W',5), (959,'s',3), (960,'w',0), +(961,'q',0), (962,'e',NULL), (963,'u',7), (964,'q',1), (965,'N',NULL), +(966,'e',0), (967,'t',3), (968,'e',6), (969,'f',NULL), (970,'j',0), +(971,'s',3), (972,'I',0), (973,'h',4), (974,'g',1), (975,'s',0), +(976,'r',3), (977,'x',1), (978,'v',8), (979,'j',NULL), (980,'z',7), +(981,'t',9), (982,'j',5), (983,'u',NULL), (984,'g',6), (985,'w',1), +(986,'h',1), (987,'v',0), (988,'v',0), (989,'c',2), (990,'b',7), +(991,'z',0), (992,'M',1), (993,'u',2), (994,'r',2), (995,'b',4), +(996,'A',2), (997,'u',0), (998,'a',0), (999,'j',2), (1,'I',2); +EXPLAIN +SELECT * FROM t1 +WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY,f4 f4 35 NULL # Using index condition; Using where; Rowid-ordered scan +SELECT * FROM t1 +WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ; +f1 f4 f5 +994 r 2 +996 A 2 +998 a 0 +DROP TABLE t1; +SET SESSION optimizer_switch='index_merge_sort_intersection=on'; diff --git a/mysql-test/r/index_intersect_innodb.result b/mysql-test/r/index_intersect_innodb.result new file mode 100644 index 00000000000..c2aa281c7f3 --- /dev/null +++ b/mysql-test/r/index_intersect_innodb.result @@ -0,0 +1,1045 @@ +SET SESSION STORAGE_ENGINE='InnoDB'; +DROP TABLE IF EXISTS t1,t2,t3,t4; +DROP DATABASE IF EXISTS world; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +); +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +SELECT COUNT(*) FROM Country; +COUNT(*) +239 +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM CountryLanguage; +COUNT(*) +984 +CREATE INDEX Name ON City(Name); +SET SESSION optimizer_switch='index_merge_sort_intersection=on'; +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM City WHERE Name LIKE 'C%'; +COUNT(*) +281 +SELECT COUNT(*) FROM City WHERE Name LIKE 'M%'; +COUNT(*) +301 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 1500000; +COUNT(*) +129 +SELECT COUNT(*) FROM City WHERE Population > 300000; +COUNT(*) +1062 +SELECT COUNT(*) FROM City WHERE Population > 7000000; +COUNT(*) +14 +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 300000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Name,Population 35,4 NULL # Using sort_intersect(Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 7000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City +WHERE Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +131 Melbourne AUS 2865329 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +131 Melbourne AUS 2865329 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 300000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +1042 Madurai IND 977856 +1051 Meerut IND 753778 +1074 Mysore IND 480692 +1081 Moradabad IND 429214 +1098 Malegaon IND 342595 +131 Melbourne AUS 2865329 +1366 Mosul IRQ 879000 +1381 Mashhad IRN 1887405 +1465 Milano ITA 1300977 +1559 Matsuyama JPN 466133 +1560 Matsudo JPN 461126 +1578 Machida JPN 364197 +1595 Miyazaki JPN 303784 +1810 Montréal CAN 1016376 +1816 Mississauga CAN 608072 +1882 Mombasa KEN 461753 +1945 Mudanjiang CHN 570000 +2005 Ma´anshan CHN 305421 +215 Manaus BRA 1255049 +223 Maceió BRA 786288 +2259 MedellÃn COL 1861265 +2267 Manizales COL 337580 +2300 Mbuji-Mayi COD 806475 +2348 Masan KOR 441242 +2440 Monrovia LBR 850000 +2454 Macao MAC 437500 +2487 Marrakech MAR 621914 +2491 Meknès MAR 460000 +250 Mauá BRA 375055 +2523 Monterrey MEX 1108499 +2526 Mexicali MEX 764902 +2530 Mérida MEX 703324 +2537 Morelia MEX 619958 +2554 Matamoros MEX 416428 +2557 Mazatlán MEX 380265 +256 Moji das Cruzes BRA 339194 +2698 Maputo MOZ 1018938 +2699 Matola MOZ 424662 +2711 Mandalay MMR 885300 +2712 Moulmein (Mawlamyine) MMR 307900 +2734 Managua NIC 959000 +2756 Mushin NGA 333200 +2757 Maiduguri NGA 320000 +2826 Multan PAK 1182441 +2975 Marseille FRA 798430 +3070 Munich [München] DEU 1194560 +3086 Mannheim DEU 307730 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3214 Mogadishu SOM 997000 +3364 Mersin (Içel) TUR 587212 +3371 Malatya TUR 330312 +3434 Mykolajiv UKR 508000 +3435 Mariupol UKR 490000 +3438 Makijivka UKR 384000 +3492 Montevideo URY 1236000 +3520 Minsk BLR 1674000 +3522 Mogiljov BLR 356000 +3540 MaracaÃbo VEN 1304776 +3545 Maracay VEN 444443 +3547 MaturÃn VEN 319726 +3580 Moscow RUS 8389200 +3622 Magnitogorsk RUS 427900 +3625 Murmansk RUS 376300 +3636 Mahat?kala RUS 332800 +3810 Memphis USA 650100 +3811 Milwaukee USA 596974 +3834 Mesa USA 396375 +3837 Minneapolis USA 382618 +3839 Miami USA 362470 +462 Manchester GBR 430000 +653 Madrid ESP 2879052 +658 Málaga ESP 530553 +661 Murcia ESP 353504 +766 Manila PHL 1581082 +77 Mar del Plata ARG 512880 +778 Makati PHL 444867 +781 Marikina PHL 391170 +783 Muntinlupa PHL 379310 +786 Malabon PHL 338855 +80 Merlo ARG 463846 +83 Moreno ARG 356993 +87 Morón ARG 349246 +942 Medan IDN 1843919 +947 Malang IDN 716862 +962 Manado IDN 332288 +963 Mataram IDN 306600 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 300000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +1042 Madurai IND 977856 +1051 Meerut IND 753778 +1074 Mysore IND 480692 +1081 Moradabad IND 429214 +1098 Malegaon IND 342595 +131 Melbourne AUS 2865329 +1366 Mosul IRQ 879000 +1381 Mashhad IRN 1887405 +1465 Milano ITA 1300977 +1559 Matsuyama JPN 466133 +1560 Matsudo JPN 461126 +1578 Machida JPN 364197 +1595 Miyazaki JPN 303784 +1810 Montréal CAN 1016376 +1816 Mississauga CAN 608072 +1882 Mombasa KEN 461753 +1945 Mudanjiang CHN 570000 +2005 Ma´anshan CHN 305421 +215 Manaus BRA 1255049 +223 Maceió BRA 786288 +2259 MedellÃn COL 1861265 +2267 Manizales COL 337580 +2300 Mbuji-Mayi COD 806475 +2348 Masan KOR 441242 +2440 Monrovia LBR 850000 +2454 Macao MAC 437500 +2487 Marrakech MAR 621914 +2491 Meknès MAR 460000 +250 Mauá BRA 375055 +2523 Monterrey MEX 1108499 +2526 Mexicali MEX 764902 +2530 Mérida MEX 703324 +2537 Morelia MEX 619958 +2554 Matamoros MEX 416428 +2557 Mazatlán MEX 380265 +256 Moji das Cruzes BRA 339194 +2698 Maputo MOZ 1018938 +2699 Matola MOZ 424662 +2711 Mandalay MMR 885300 +2712 Moulmein (Mawlamyine) MMR 307900 +2734 Managua NIC 959000 +2756 Mushin NGA 333200 +2757 Maiduguri NGA 320000 +2826 Multan PAK 1182441 +2975 Marseille FRA 798430 +3070 Munich [München] DEU 1194560 +3086 Mannheim DEU 307730 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3214 Mogadishu SOM 997000 +3364 Mersin (Içel) TUR 587212 +3371 Malatya TUR 330312 +3434 Mykolajiv UKR 508000 +3435 Mariupol UKR 490000 +3438 Makijivka UKR 384000 +3492 Montevideo URY 1236000 +3520 Minsk BLR 1674000 +3522 Mogiljov BLR 356000 +3540 MaracaÃbo VEN 1304776 +3545 Maracay VEN 444443 +3547 MaturÃn VEN 319726 +3580 Moscow RUS 8389200 +3622 Magnitogorsk RUS 427900 +3625 Murmansk RUS 376300 +3636 Mahat?kala RUS 332800 +3810 Memphis USA 650100 +3811 Milwaukee USA 596974 +3834 Mesa USA 396375 +3837 Minneapolis USA 382618 +3839 Miami USA 362470 +462 Manchester GBR 430000 +653 Madrid ESP 2879052 +658 Málaga ESP 530553 +661 Murcia ESP 353504 +766 Manila PHL 1581082 +77 Mar del Plata ARG 512880 +778 Makati PHL 444867 +781 Marikina PHL 391170 +783 Muntinlupa PHL 379310 +786 Malabon PHL 338855 +80 Merlo ARG 463846 +83 Moreno ARG 356993 +87 Morón ARG 349246 +942 Medan IDN 1843919 +947 Malang IDN 716862 +962 Manado IDN 332288 +963 Mataram IDN 306600 +SELECT * FROM City USE INDEX () +WHERE Name LIKE 'M%' AND Population > 7000000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +3580 Moscow RUS 8389200 +SELECT * FROM City +WHERE Name LIKE 'M%' AND Population > 7000000; +ID Name Country Population +1024 Mumbai (Bombay) IND 10500000 +3580 Moscow RUS 8389200 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'M' AND 'N'; +COUNT(*) +301 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'G' AND 'J'; +COUNT(*) +408 +SELECT COUNT(*) FROM City WHERE Name BETWEEN 'G' AND 'K'; +COUNT(*) +512 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 500000; +COUNT(*) +539 +SELECT COUNT(*) FROM City WHERE Country LIKE 'C%'; +COUNT(*) +551 +SELECT COUNT(*) FROM City WHERE Country LIKE 'B%'; +COUNT(*) +339 +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Name,Country 4,35,3 NULL # Using sort_intersect(Population,Name,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Country,Name 4,3,35 NULL # Using sort_intersect(Population,Country,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Name,Country 4,35,3 NULL # Using sort_intersect(Population,Name,Country); Using where +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +ID Name Country Population +1810 Montréal CAN 1016376 +2259 MedellÃn COL 1861265 +SELECT * FROM City +WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%'; +ID Name Country Population +1810 Montréal CAN 1016376 +2259 MedellÃn COL 1861265 +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City USE INDEX () +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1923 Jilin CHN 1040000 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1938 Jixi CHN 683885 +1944 Jinzhou CHN 570000 +1950 Hegang CHN 520000 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1923 Jilin CHN 1040000 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1938 Jixi CHN 683885 +1944 Jinzhou CHN 570000 +1950 Hegang CHN 520000 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 501 AND 1000; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 1 AND 500; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 2001 AND 2500; +COUNT(*) +500 +SELECT COUNT(*) FROM City WHERE ID BETWEEN 3701 AND 4000; +COUNT(*) +300 +SELECT COUNT(*) FROM City WHERE Population > 700000; +COUNT(*) +358 +SELECT COUNT(*) FROM City WHERE Population > 1000000; +COUNT(*) +237 +SELECT COUNT(*) FROM City WHERE Population > 300000; +COUNT(*) +1062 +SELECT COUNT(*) FROM City WHERE Population > 600000; +COUNT(*) +428 +SELECT COUNT(*) FROM City WHERE Country LIKE 'C%'; +COUNT(*) +551 +SELECT COUNT(*) FROM City WHERE Country LIKE 'A%'; +COUNT(*) +107 +SELECT COUNT(*) FROM City WHERE Country LIKE 'H%'; +COUNT(*) +22 +SELECT COUNT(*) FROM City WHERE Country BETWEEN 'S' AND 'Z'; +COUNT(*) +682 +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Country,Population 4,3,4 NULL # Using sort_intersect(PRIMARY,Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Population,Country 4,4,3 NULL # Using sort_intersect(PRIMARY,Population,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Country 4,3 NULL # Using sort_intersect(PRIMARY,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3701 AND 4000 AND Population > 1000000 +AND Country BETWEEN 'S' AND 'Z'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Country,Population 4,3,4 NULL # Using sort_intersect(PRIMARY,Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Population,Country 4,4,3 NULL # Using sort_intersect(PRIMARY,Population,Country); Using where +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +ID Name Country Population +554 Santiago de Chile CHL 4703954 +SELECT * FROM City +WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%'; +ID Name Country Population +554 Santiago de Chile CHL 4703954 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +ID Name Country Population +2409 Zagreb HRV 706770 +SELECT * FROM City +WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%'; +ID Name Country Population +2409 Zagreb HRV 706770 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 3701 AND 4000 AND Population > 700000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +SELECT * FROM City +WHERE ID BETWEEN 3701 AND 4000 AND Population > 700000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +SELECT * FROM City USE INDEX () +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z' ; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SET SESSION sort_buffer_size = 2048; +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Population,Country,Name 4,3,35 NULL # Using sort_intersect(Population,Country,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Population,Country 35,4,3 NULL # Using sort_intersect(Name,Population,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Population,Country 4,4,3 NULL # Using sort_intersect(PRIMARY,Population,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country PRIMARY,Country,Population 4,3,4 NULL # Using sort_intersect(PRIMARY,Country,Population); Using where +SELECT * FROM City WHERE +Name LIKE 'C%' AND Population > 1000000; +ID Name Country Population +1026 Calcutta [Kolkata] IND 4399819 +1027 Chennai (Madras) IND 3841396 +151 Chittagong BGD 1392860 +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +212 Curitiba BRA 1584232 +2258 Cali COL 2077386 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +3539 Caracas VEN 1975294 +3795 Chicago USA 2896016 +608 Cairo EGY 6789479 +71 Córdoba ARG 1157507 +712 Cape Town ZAF 2352121 +926 Conakry GIN 1090610 +SELECT * FROM City WHERE +Name LIKE 'M%' AND Population > 1500000; +ID Name Country Population +131 Melbourne AUS 2865329 +653 Madrid ESP 2879052 +766 Manila PHL 1581082 +942 Medan IDN 1843919 +1024 Mumbai (Bombay) IND 10500000 +1381 Mashhad IRN 1887405 +2259 MedellÃn COL 1861265 +3520 Minsk BLR 1674000 +3580 Moscow RUS 8389200 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 700000 AND Country LIKE 'B%'; +ID Name Country Population +217 Guarulhos BRA 1095874 +218 Goiânia BRA 1056330 +SELECT * FROM City +WHERE Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%'; +ID Name Country Population +1895 Harbin CHN 4289800 +1905 Hangzhou CHN 2190500 +1914 Guiyang CHN 1465200 +1916 Hefei CHN 1369100 +1927 Hohhot CHN 916700 +1928 Handan CHN 840000 +1937 Huainan CHN 700000 +1950 Hegang CHN 520000 +SELECT * FROM City +WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%'; +ID Name Country Population +1 Kabul AFG 1780000 +56 Luanda AGO 2022000 +69 Buenos Aires ARG 2982146 +70 La Matanza ARG 1266461 +71 Córdoba ARG 1157507 +126 Yerevan ARM 1248700 +130 Sydney AUS 3276207 +131 Melbourne AUS 2865329 +132 Brisbane AUS 1291117 +133 Perth AUS 1096829 +144 Baku AZE 1787800 +SELECT * FROM City +WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000 +AND Country BETWEEN 'S' AND 'Z'; +ID Name Country Population +3048 Stockholm SWE 750348 +3173 Riyadh SAU 3324000 +3174 Jedda SAU 2046300 +3175 Mekka SAU 965700 +3176 Medina SAU 608300 +3197 Pikine SEN 855287 +3198 Dakar SEN 785071 +3207 Freetown SLE 850000 +3208 Singapore SGP 4017733 +3214 Mogadishu SOM 997000 +3224 Omdurman SDN 1271403 +3225 Khartum SDN 947483 +3226 Sharq al-Nil SDN 700887 +3250 Damascus SYR 1347000 +3251 Aleppo SYR 1261983 +3263 Taipei TWN 2641312 +3264 Kaohsiung TWN 1475505 +3265 Taichung TWN 940589 +3266 Tainan TWN 728060 +3305 Dar es Salaam TZA 1747000 +3320 Bangkok THA 6320174 +3349 Tunis TUN 690600 +3357 Istanbul TUR 8787958 +3358 Ankara TUR 3038159 +3359 Izmir TUR 2130359 +3360 Adana TUR 1131198 +3361 Bursa TUR 1095842 +3362 Gaziantep TUR 789056 +3363 Konya TUR 628364 +3425 Kampala UGA 890800 +3426 Kyiv UKR 2624000 +3427 Harkova [Harkiv] UKR 1500000 +3428 Dnipropetrovsk UKR 1103000 +3429 Donetsk UKR 1050000 +3430 Odesa UKR 1011000 +3431 Zaporizzja UKR 848000 +3432 Lviv UKR 788000 +3433 Kryvyi Rig UKR 703000 +3492 Montevideo URY 1236000 +3503 Toskent UZB 2117500 +3539 Caracas VEN 1975294 +3540 MaracaÃbo VEN 1304776 +3541 Barquisimeto VEN 877239 +3542 Valencia VEN 794246 +3543 Ciudad Guayana VEN 663713 +3769 Ho Chi Minh City VNM 3980000 +3770 Hanoi VNM 1410000 +3771 Haiphong VNM 783133 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +3801 San Antonio USA 1144646 +3802 Detroit USA 951270 +3803 San Jose USA 894943 +3804 Indianapolis USA 791926 +3805 San Francisco USA 776733 +3806 Jacksonville USA 735167 +3807 Columbus USA 711470 +3808 Austin USA 656562 +3809 Baltimore USA 651154 +3810 Memphis USA 650100 +SET SESSION sort_buffer_size = default; +DROP INDEX Country ON City; +CREATE INDEX CountryID ON City(Country,ID); +CREATE INDEX CountryName ON City(Country,Name); +EXPLAIN +SELECT * FROM City +WHERE Country LIKE 'M%' AND Population > 1000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,CountryID,CountryName Population,CountryID 4,3 NULL # Using sort_intersect(Population,CountryID); Using where +EXPLAIN +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,CountryID,CountryName Population,CountryID 4,3 NULL # Using sort_intersect(Population,CountryID); Using where +EXPLAIN +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name,CountryID,CountryName CountryName,Population 38,4 NULL # Using sort_intersect(CountryName,Population); Using where +SELECT * FROM City USE INDEX () +WHERE Country LIKE 'M%' AND Population > 1000000; +ID Name Country Population +2464 Kuala Lumpur MYS 1297526 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +2516 Guadalajara MEX 1647720 +2517 Ecatepec de Morelos MEX 1620303 +2518 Puebla MEX 1346176 +2519 Nezahualcóyotl MEX 1224924 +2520 Juárez MEX 1217818 +2521 Tijuana MEX 1212232 +2522 León MEX 1133576 +2523 Monterrey MEX 1108499 +2524 Zapopan MEX 1002239 +2698 Maputo MOZ 1018938 +2710 Rangoon (Yangon) MMR 3361700 +SELECT * FROM City +WHERE Country LIKE 'M%' AND Population > 1000000; +ID Name Country Population +2464 Kuala Lumpur MYS 1297526 +2485 Casablanca MAR 2940623 +2515 Ciudad de México MEX 8591309 +2516 Guadalajara MEX 1647720 +2517 Ecatepec de Morelos MEX 1620303 +2518 Puebla MEX 1346176 +2519 Nezahualcóyotl MEX 1224924 +2520 Juárez MEX 1217818 +2521 Tijuana MEX 1212232 +2522 León MEX 1133576 +2523 Monterrey MEX 1108499 +2524 Zapopan MEX 1002239 +2698 Maputo MOZ 1018938 +2710 Rangoon (Yangon) MMR 3361700 +SELECT * FROM City USE INDEX () +WHERE Country='CHN' AND Population > 1500000; +ID Name Country Population +1890 Shanghai CHN 9696300 +1891 Peking CHN 7472000 +1892 Chongqing CHN 6351600 +1893 Tianjin CHN 5286800 +1894 Wuhan CHN 4344600 +1895 Harbin CHN 4289800 +1896 Shenyang CHN 4265200 +1897 Kanton [Guangzhou] CHN 4256300 +1898 Chengdu CHN 3361500 +1899 Nanking [Nanjing] CHN 2870300 +1900 Changchun CHN 2812000 +1901 Xi´an CHN 2761400 +1902 Dalian CHN 2697000 +1903 Qingdao CHN 2596000 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1906 Zhengzhou CHN 2107200 +1907 Shijiazhuang CHN 2041500 +1908 Taiyuan CHN 1968400 +1909 Kunming CHN 1829500 +1910 Changsha CHN 1809800 +1911 Nanchang CHN 1691600 +1912 Fuzhou CHN 1593800 +1913 Lanzhou CHN 1565800 +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000; +ID Name Country Population +1890 Shanghai CHN 9696300 +1891 Peking CHN 7472000 +1892 Chongqing CHN 6351600 +1893 Tianjin CHN 5286800 +1894 Wuhan CHN 4344600 +1895 Harbin CHN 4289800 +1896 Shenyang CHN 4265200 +1897 Kanton [Guangzhou] CHN 4256300 +1898 Chengdu CHN 3361500 +1899 Nanking [Nanjing] CHN 2870300 +1900 Changchun CHN 2812000 +1901 Xi´an CHN 2761400 +1902 Dalian CHN 2697000 +1903 Qingdao CHN 2596000 +1904 Jinan CHN 2278100 +1905 Hangzhou CHN 2190500 +1906 Zhengzhou CHN 2107200 +1907 Shijiazhuang CHN 2041500 +1908 Taiyuan CHN 1968400 +1909 Kunming CHN 1829500 +1910 Changsha CHN 1809800 +1911 Nanchang CHN 1691600 +1912 Fuzhou CHN 1593800 +1913 Lanzhou CHN 1565800 +SELECT * FROM City USE INDEX () +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +ID Name Country Population +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +SELECT * FROM City +WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%'; +ID Name Country Population +1892 Chongqing CHN 6351600 +1898 Chengdu CHN 3361500 +1900 Changchun CHN 2812000 +1910 Changsha CHN 1809800 +EXPLAIN +SELECT * FROM City, Country +WHERE City.Name LIKE 'C%' AND City.Population > 1000000 AND +Country.Code=City.Country; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Name,CountryID,CountryName Population,Name 4,35 NULL # Using sort_intersect(Population,Name); Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country # +DROP DATABASE world; +use test; +CREATE TABLE t1 ( +f1 int, +f4 varchar(32), +f5 int, +PRIMARY KEY (f1), +KEY (f4) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +(5,'H',1), (9,'g',0), (527,'i',0), (528,'y',1), (529,'S',6), +(530,'m',7), (531,'b',2), (532,'N',1), (533,'V',NULL), (534,'l',1), +(535,'M',0), (536,'w',1), (537,'j',5), (538,'l',0), (539,'n',2), +(540,'m',2), (541,'r',2), (542,'l',2), (543,'h',3),(544,'o',0), +(956,'h',0), (957,'g',0), (958,'W',5), (959,'s',3), (960,'w',0), +(961,'q',0), (962,'e',NULL), (963,'u',7), (964,'q',1), (965,'N',NULL), +(966,'e',0), (967,'t',3), (968,'e',6), (969,'f',NULL), (970,'j',0), +(971,'s',3), (972,'I',0), (973,'h',4), (974,'g',1), (975,'s',0), +(976,'r',3), (977,'x',1), (978,'v',8), (979,'j',NULL), (980,'z',7), +(981,'t',9), (982,'j',5), (983,'u',NULL), (984,'g',6), (985,'w',1), +(986,'h',1), (987,'v',0), (988,'v',0), (989,'c',2), (990,'b',7), +(991,'z',0), (992,'M',1), (993,'u',2), (994,'r',2), (995,'b',4), +(996,'A',2), (997,'u',0), (998,'a',0), (999,'j',2), (1,'I',2); +EXPLAIN +SELECT * FROM t1 +WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,f4 PRIMARY,f4 4,35 NULL # Using sort_intersect(PRIMARY,f4); Using where +SELECT * FROM t1 +WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ; +f1 f4 f5 +994 r 2 +996 A 2 +998 a 0 +DROP TABLE t1; +SET SESSION optimizer_switch='index_merge_sort_intersection=on'; +SET SESSION STORAGE_ENGINE=DEFAULT; diff --git a/mysql-test/r/index_merge_innodb.result b/mysql-test/r/index_merge_innodb.result index fdc5b57a2e3..17663076ca3 100644 --- a/mysql-test/r/index_merge_innodb.result +++ b/mysql-test/r/index_merge_innodb.result @@ -1,3 +1,5 @@ +set @optimizer_switch_save= @@optimizer_switch; +set optimizer_switch='index_merge_sort_intersection=off'; #---------------- Index merge test 2 ------------------------------------------- SET SESSION STORAGE_ENGINE = InnoDB; drop table if exists t1,t2; @@ -709,3 +711,35 @@ WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t; COUNT(*) 6145 DROP TABLE t1; +# +# Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly +# with Innodb tables +# +CREATE TABLE t1 ( +i int(11) DEFAULT NULL, +v1 varchar(1) DEFAULT NULL, +v2 varchar(20) DEFAULT NULL, +KEY i (i), +KEY v (v1,i) +) ENGINE=innodb; +INSERT INTO t1 VALUES (1,'f','no'); +INSERT INTO t1 VALUES (2,'u','yes-u'); +INSERT INTO t1 VALUES (2,'h','yes-h'); +INSERT INTO t1 VALUES (3,'d','no'); + +SELECT v2 +FROM t1 +WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2; +v2 +yes-u +yes-h + +# Should not use index_merge +EXPLAIN +SELECT v2 +FROM t1 +WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref i,v i 5 const 2 Using where +DROP TABLE t1; +set optimizer_switch= @optimizer_switch_save; diff --git a/mysql-test/r/index_merge_myisam.result b/mysql-test/r/index_merge_myisam.result index df570e1f4ae..4871f42cffc 100644 --- a/mysql-test/r/index_merge_myisam.result +++ b/mysql-test/r/index_merge_myisam.result @@ -1,3 +1,5 @@ +set @optimizer_switch_save= @@optimizer_switch; +set optimizer_switch='index_merge_sort_intersection=off'; #---------------- Index merge test 1 ------------------------------------------- SET SESSION STORAGE_ENGINE = MyISAM; drop table if exists t0, t1, t2, t3, t4; @@ -19,7 +21,7 @@ Table Op Msg_type Msg_text test.t0 analyze status OK explain select * from t0 where key1 < 3 or key1 > 1020; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 range i1 i1 4 NULL 78 Using where +1 SIMPLE t0 range i1 i1 4 NULL 78 Using index condition; Rowid-ordered scan explain select * from t0 where key1 < 3 or key2 > 1020; id select_type table type possible_keys key key_len ref rows Extra @@ -72,7 +74,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 17 Using sort_union(i1,i2); Using where explain select * from t0 where key2 = 45 or key1 <=> null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where +1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where; Rowid-ordered scan explain select * from t0 where key2 = 45 or key1 is not null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 ALL i1,i2 NULL NULL NULL 1024 Using where @@ -115,11 +117,11 @@ id select_type table type possible_keys key key_len ref rows Extra explain select * from t0 where (key1 < 3 or key2 < 3) and (key3 < 100); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 range i1,i2,i3 i3 4 NULL 95 Using where +1 SIMPLE t0 index_merge i1,i2,i3 i1,i2 4,4 NULL 6 Using sort_union(i1,i2); Using where explain select * from t0 where (key1 < 3 or key2 < 3) and (key3 < 1000); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 ALL i1,i2,i3 NULL NULL NULL 1024 Using where +1 SIMPLE t0 index_merge i1,i2,i3 i1,i2 4,4 NULL 6 Using sort_union(i1,i2); Using where explain select * from t0 where ((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4)) or @@ -203,12 +205,12 @@ alter table t2 add index i321(key3, key2, key1); explain select key3 from t2 where key1 = 100 or key2 = 100; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 2 Using sort_union(i1_3,i2_3); Using where -explain select key3 from t2 where key1 <100 or key2 < 100; +explain select key3 from t2 where key1 < 500 or key2 < 500; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index i1_3,i2_3 i321 12 NULL 1024 Using where; Using index explain select key7 from t2 where key1 <100 or key2 < 100; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL i1_3,i2_3 NULL NULL NULL 1024 Using where +1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 188 Using sort_union(i1_3,i2_3); Using where create table t4 ( key1a int not null, key1b int not null, @@ -259,7 +261,7 @@ explain select * from t0,t1 where (t0.key1=t1.key1) and (t0.key1=3 or t0.key2=4) and t1.key1<200; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 ALL i1,i2 NULL NULL NULL 1024 Using where +1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where 1 SIMPLE t1 ref i1 i1 4 test.t0.key1 1 explain select * from t0,t1 where (t0.key1=t1.key1) and @@ -271,11 +273,11 @@ explain select * from t0,t1 where t0.key1 = 5 and (t1.key1 = t0.key1 or t1.key8 = t0.key1); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 ref i1 i1 4 const 1 -1 SIMPLE t1 index_merge i1,i8 i1,i8 4,4 NULL 2 Using union(i1,i8); Using where; Using join buffer +1 SIMPLE t1 index_merge i1,i8 i1,i8 4,4 NULL 2 Using union(i1,i8); Using where; Using join buffer (flat, BNL join) explain select * from t0,t1 where t0.key1 < 3 and (t1.key1 = t0.key1 or t1.key8 = t0.key1); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 range i1 i1 4 NULL 3 Using where +1 SIMPLE t0 range i1 i1 4 NULL 3 Using index condition; Rowid-ordered scan 1 SIMPLE t1 ALL i1,i8 NULL NULL NULL 1024 Range checked for each record (index map: 0x81) explain select * from t1 where key1=3 or key2=4 union select * from t1 where key1<4 or key3=5; @@ -342,15 +344,13 @@ create table t4 (a int); insert into t4 values (1),(4),(3); set @save_join_buffer_size=@@join_buffer_size; set join_buffer_size= 4000; -Warnings: -Warning 1292 Truncated incorrect join_buffer_size value: '4000' explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) from t0 as A force index(i1,i2), t0 as B force index (i1,i2) where (A.key1 < 500000 or A.key2 < 3) and (B.key1 < 500000 or B.key2 < 3); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE A index_merge i1,i2 i1,i2 4,4 NULL 1013 Using sort_union(i1,i2); Using where -1 SIMPLE B index_merge i1,i2 i1,i2 4,4 NULL 1013 Using sort_union(i1,i2); Using where; Using join buffer +1 SIMPLE B index_merge i1,i2 i1,i2 4,4 NULL 1013 Using sort_union(i1,i2); Using where; Using join buffer (flat, BNL join) select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) from t0 as A force index(i1,i2), t0 as B force index (i1,i2) where (A.key1 < 500000 or A.key2 < 3) @@ -364,7 +364,7 @@ where (A.key1 = 1 or A.key2 = 1) and (B.key1 = 1 or B.key2 = 1); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE A index_merge i1,i2 i1,i2 4,4 NULL 1020 Using union(i1,i2); Using where -1 SIMPLE B index_merge i1,i2 i1,i2 4,4 NULL 1020 Using union(i1,i2); Using where; Using join buffer +1 SIMPLE B index_merge i1,i2 i1,i2 4,4 NULL 1020 Using union(i1,i2); Using where; Using join buffer (flat, BNL join) select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) from t0 as A force index(i1,i2), t0 as B force index (i1,i2) where (A.key1 = 1 or A.key2 = 1) @@ -374,14 +374,14 @@ max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.ke alter table t0 add filler1 char(200), add filler2 char(200), add filler3 char(200); update t0 set key2=1, key3=1, key4=1, key5=1,key6=1,key7=1 where key7 < 500; explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) -from t0 as A, t0 as B +from t0 as A straight_join t0 as B where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1) and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE A index_merge i1,i2,i3,i4,i5,i6,i7?,i8 i2,i3,i4,i5,i6,i7?,i8 X NULL # Using union(intersect(i2,i3,i4,i5,i6,i7?),i8); Using where -1 SIMPLE B index_merge i1,i2,i3,i4,i5,i6,i7?,i8 i2,i3,i4,i5,i6,i7?,i8 X NULL # Using union(intersect(i2,i3,i4,i5,i6,i7?),i8); Using where; Using join buffer +1 SIMPLE B index_merge i1,i2,i3,i4,i5,i6,i7?,i8 i2,i3,i4,i5,i6,i7?,i8 X NULL # Using union(intersect(i2,i3,i4,i5,i6,i7?),i8); Using where; Using join buffer (flat, BNL join) select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) -from t0 as A, t0 as B +from t0 as A straight_join t0 as B where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1) and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1); max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5) @@ -569,9 +569,7 @@ INSERT INTO t1 SELECT * FROM t1; INSERT INTO t1 SELECT * FROM t1; INSERT INTO t1 SELECT * FROM t1; INSERT INTO t1 SELECT * FROM t1; -SET SESSION sort_buffer_size=1; -Warnings: -Warning 1292 Truncated incorrect sort_buffer_size value: '1' +SET SESSION sort_buffer_size=1024*8; EXPLAIN SELECT * FROM t1 FORCE INDEX(a,b) WHERE a LIKE 'a%' OR b LIKE 'b%' ORDER BY a,b; @@ -1381,19 +1379,19 @@ primary key (pk1, pk2) ); explain select * from t1 where pk1 = 1 and pk2 < 80 and key1=0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 7 Using where +1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 7 Using index condition; Using where; Rowid-ordered scan select * from t1 where pk1 = 1 and pk2 < 80 and key1=0; pk1 pk2 key1 key2 pktail1ok pktail2ok pktail3bad pktail4bad pktail5bad pk2copy badkey filler1 filler2 -1 10 0 0 0 0 0 0 0 10 0 filler-data-10 filler2 -1 11 0 0 0 0 0 0 0 11 0 filler-data-11 filler2 -1 12 0 0 0 0 0 0 0 12 0 filler-data-12 filler2 -1 13 0 0 0 0 0 0 0 13 0 filler-data-13 filler2 -1 14 0 0 0 0 0 0 0 14 0 filler-data-14 filler2 -1 15 0 0 0 0 0 0 0 15 0 filler-data-15 filler2 -1 16 0 0 0 0 0 0 0 16 0 filler-data-16 filler2 -1 17 0 0 0 0 0 0 0 17 0 filler-data-17 filler2 -1 18 0 0 0 0 0 0 0 18 0 filler-data-18 filler2 1 19 0 0 0 0 0 0 0 19 0 filler-data-19 filler2 +1 18 0 0 0 0 0 0 0 18 0 filler-data-18 filler2 +1 17 0 0 0 0 0 0 0 17 0 filler-data-17 filler2 +1 16 0 0 0 0 0 0 0 16 0 filler-data-16 filler2 +1 15 0 0 0 0 0 0 0 15 0 filler-data-15 filler2 +1 14 0 0 0 0 0 0 0 14 0 filler-data-14 filler2 +1 13 0 0 0 0 0 0 0 13 0 filler-data-13 filler2 +1 12 0 0 0 0 0 0 0 12 0 filler-data-12 filler2 +1 11 0 0 0 0 0 0 0 11 0 filler-data-11 filler2 +1 10 0 0 0 0 0 0 0 10 0 filler-data-10 filler2 explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where @@ -1488,66 +1486,6 @@ id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 2 DEPENDENT SUBQUERY t2 ref f2,f3 f2 5 1 Using where DROP TABLE t1,t2; -# -# Generic @@optimizer_switch tests (move those into a separate file if -# we get another @@optimizer_switch user) -# -select @@optimizer_switch; -@@optimizer_switch -index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on -set optimizer_switch='index_merge=off,index_merge_union=off'; -select @@optimizer_switch; -@@optimizer_switch -index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on -set optimizer_switch='index_merge_union=on'; -select @@optimizer_switch; -@@optimizer_switch -index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on -set optimizer_switch='default,index_merge_sort_union=off'; -select @@optimizer_switch; -@@optimizer_switch -index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on -set optimizer_switch=4; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of '4' -set optimizer_switch=NULL; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'NULL' -set optimizer_switch='default,index_merge'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge' -set optimizer_switch='index_merge=index_merge'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=index_merge' -set optimizer_switch='index_merge=on,but...'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'but...' -set optimizer_switch='index_merge='; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=' -set optimizer_switch='index_merge'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge' -set optimizer_switch='on'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'on' -set optimizer_switch='index_merge=on,index_merge=off'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=off' -set optimizer_switch='index_merge_union=on,index_merge_union=default'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge_union=default' -set optimizer_switch='default,index_merge=on,index_merge=off,default'; -ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=off,default' -set optimizer_switch=default; -set optimizer_switch='index_merge=off,index_merge_union=off,default'; -select @@optimizer_switch; -@@optimizer_switch -index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on -set optimizer_switch=default; -select @@global.optimizer_switch; -@@global.optimizer_switch -index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on -set @@global.optimizer_switch=default; -select @@global.optimizer_switch; -@@global.optimizer_switch -index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on -# -# Check index_merge's @@optimizer_switch flags -# -select @@optimizer_switch; -@@optimizer_switch -index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on create table t0 (a int); insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t1 (a int, b int, c int, filler char(100), @@ -1624,7 +1562,7 @@ explain select * from t1 where a=10 and b=10; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref a,b a 5 const 49 Using where No intersect if it is disabled: -set optimizer_switch='default,index_merge_intersection=off'; +set optimizer_switch='default,index_merge_sort_intersection=off,index_merge_intersection=off'; explain select * from t1 where a=10 and b=10; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref a,b a 5 const 49 Using where @@ -1655,7 +1593,5 @@ explain select * from t1 where a=10 and b=10 or c=10; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index_merge a,b,c a,c 5,5 NULL 54 Using sort_union(a,c); Using where set optimizer_switch=default; -show variables like 'optimizer_switch'; -Variable_name Value -optimizer_switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on drop table t0, t1; +set optimizer_switch= @optimizer_switch_save; diff --git a/mysql-test/r/information_schema.result b/mysql-test/r/information_schema.result index 8a2b258e356..b32e25ef07e 100644 --- a/mysql-test/r/information_schema.result +++ b/mysql-test/r/information_schema.result @@ -324,7 +324,7 @@ information_schema.SCHEMATA b where a.ROUTINE_SCHEMA = b.SCHEMA_NAME; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE # ALL NULL NULL NULL NULL NULL -1 SIMPLE # ALL NULL NULL NULL NULL NULL Using where; Using join buffer +1 SIMPLE # ALL NULL NULL NULL NULL NULL Using where; Using join buffer (flat, BNL join) select a.ROUTINE_NAME, b.name from information_schema.ROUTINES a, mysql.proc b where a.ROUTINE_NAME = convert(b.name using utf8) AND a.ROUTINE_SCHEMA='test' order by 1; ROUTINE_NAME name @@ -1450,7 +1450,7 @@ from information_schema.tables a, information_schema.columns b where a.table_name='t1' and a.table_schema='test' and b.table_name=a.table_name; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE a ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL Using where; Skip_open_table; Scanned 0 databases -1 SIMPLE b ALL NULL NULL NULL NULL NULL Using where; Open_frm_only; Scanned all databases; Using join buffer +1 SIMPLE b ALL NULL NULL NULL NULL NULL Using where; Open_frm_only; Scanned all databases; Using join buffer (flat, BNL join) SELECT * FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = 'mysqltest'; CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH diff --git a/mysql-test/r/innodb.result b/mysql-test/r/innodb.result index 718e363adb7..6134f671e2e 100644 --- a/mysql-test/r/innodb.result +++ b/mysql-test/r/innodb.result @@ -1295,7 +1295,7 @@ count(*) 623 explain select * from t1 where c between 1 and 2500; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c c 5 NULL # Using where +1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan update t1 set c=a; explain select * from t1 where c between 1 and 2500; id select_type table type possible_keys key key_len ref rows Extra @@ -1990,7 +1990,7 @@ qq *a *a*a * explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v,v_2 # 13 const # Using where +1 SIMPLE t1 ref v,v_2 # 13 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 @@ -2166,7 +2166,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref v v 303 const # Using where; Using index explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where +1 SIMPLE t1 ref v v 303 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 diff --git a/mysql-test/r/innodb_icp.result b/mysql-test/r/innodb_icp.result new file mode 100644 index 00000000000..e4d81a9a3d5 --- /dev/null +++ b/mysql-test/r/innodb_icp.result @@ -0,0 +1,203 @@ +set @save_storage_engine= @@storage_engine; +set storage_engine=InnoDB; +# +# Bug#36981 - "innodb crash when selecting for update" +# +CREATE TABLE t1 ( +c1 CHAR(1), +c2 CHAR(10), +KEY (c1) +); +INSERT INTO t1 VALUES ('3', null); +SELECT * FROM t1 WHERE c1='3' FOR UPDATE; +c1 c2 +3 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +CREATE TABLE t2 (a INT); +INSERT INTO t2 SELECT A.a + 10*(B.a + 10*C.a) FROM t1 A, t1 B, t1 C; +CREATE TABLE t3 ( +c1 CHAR(10) NOT NULL, +c2 CHAR(10) NOT NULL, +c3 CHAR(200) NOT NULL, +KEY (c1) +); +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',1000+ t2.a,'=w'), 'filler' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',2000+t2.a,'=w'), 'filler-1' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',3000+t2.a,'=w'), 'filler-2' + FROM t2; +SELECT c1,c3 FROM t3 WHERE c1 >= 'c-1994=w' and c1 != 'c-1996=w' FOR UPDATE; +c1 c3 +c-1994=w filler +c-1994=w filler-1 +c-1994=w filler-2 +c-1995=w filler +c-1995=w filler-1 +c-1995=w filler-2 +c-1997=w filler +c-1997=w filler-1 +c-1997=w filler-2 +c-1998=w filler +c-1998=w filler-1 +c-1998=w filler-2 +c-1999=w filler +c-1999=w filler-1 +c-1999=w filler-2 +DROP TABLE t1,t2,t3; +# +# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for +# null-safe operator <=> NULL +# +CREATE TABLE t1( +c1 DATE NOT NULL, +c2 DATE NULL, +c3 DATETIME, +c4 TIMESTAMP, +PRIMARY KEY(c1), +UNIQUE(c2) +); + +INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05'); +INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26'); +INSERT INTO t1 VALUES('2008-01-01', NULL , '2008-01-02', '2008-01-03'); +INSERT INTO t1 VALUES('2008-01-17', NULL , NULL , '2009-01-29'); +INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29'); + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +DROP TABLE t1; +# +# Bug#40992 - InnoDB: Crash when engine_condition_pushdown is on +# +CREATE TABLE t ( +dummy INT PRIMARY KEY, +a INT UNIQUE, +b INT +); +INSERT INTO t VALUES (1,1,1),(3,3,3),(5,5,5); +SELECT * FROM t WHERE a > 2 FOR UPDATE; +dummy a b +3 3 3 +5 5 5 +DROP TABLE t; +# +# Bug#35080 - Innodb crash at mem_block_get_len line 72 +# +CREATE TABLE t1 ( +t1_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +PRIMARY KEY (t1_autoinc), +KEY k (uuid) +); +CREATE TABLE t2 ( +t2_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +date DATETIME DEFAULT NULL, +PRIMARY KEY (t2_autoinc), +KEY k (uuid) +); +CREATE VIEW v1 AS +SELECT t1_autoinc, uuid +FROM t1 +WHERE (ISNULL(uuid) OR (uuid like '%-%')); +CREATE VIEW v2 AS +SELECT t2_autoinc, uuid, date +FROM t2 +WHERE (ISNULL(uuid) OR (LENGTH(uuid) = 36)); +CREATE PROCEDURE delete_multi (IN uuid CHAR(36)) +DELETE v1, v2 FROM v1 INNER JOIN v2 +ON v1.uuid = v2.uuid +WHERE v1.uuid = @uuid; +SET @uuid = UUID(); +INSERT INTO v1 (uuid) VALUES (@uuid); +INSERT INTO v2 (uuid, date) VALUES (@uuid, '2009-09-09'); +CALL delete_multi(@uuid); +DROP procedure delete_multi; +DROP table t1,t2; +DROP view v1,v2; +# +# Bug#41996 - multi-table delete crashes server (InnoDB table) +# +CREATE TABLE t1 ( +b BIGINT, +i INT, +KEY (b) +); +INSERT INTO t1 VALUES (2, 2); +DELETE t1 FROM t1 a, t1 WHERE a.i=t1.b; +DROP TABLE t1; +# +# Bug#43448 - Server crashes on multi table delete with Innodb +# +CREATE TABLE t1 ( +id1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY, +t CHAR(12) +); +CREATE TABLE t2 ( +id2 INT NOT NULL, +t CHAR(12) +); +CREATE TABLE t3( +id3 INT NOT NULL, +t CHAR(12), +INDEX(id3) +); +CREATE PROCEDURE insert_data () +BEGIN +DECLARE i1 INT DEFAULT 20; +DECLARE i2 INT; +DECLARE i3 INT; +WHILE (i1 > 0) DO +INSERT INTO t1(t) VALUES (i1); +SET i2 = 2; +WHILE (i2 > 0) DO +INSERT INTO t2(id2, t) VALUES (i1, i2); +SET i3 = 2; +WHILE (i3 > 0) DO +INSERT INTO t3(id3, t) VALUES (i1, i2); +SET i3 = i3 -1; +END WHILE; +SET i2 = i2 -1; +END WHILE; +SET i1 = i1 - 1; +END WHILE; +END | +CALL insert_data(); +SELECT COUNT(*) FROM t1 WHERE id1 > 10; +COUNT(*) +10 +SELECT COUNT(*) FROM t2 WHERE id2 > 10; +COUNT(*) +20 +SELECT COUNT(*) FROM t3 WHERE id3 > 10; +COUNT(*) +40 +DELETE t1, t2, t3 +FROM t1, t2, t3 +WHERE t1.id1 = t2.id2 AND t2.id2 = t3.id3 AND t1.id1 > 3; +SELECT COUNT(*) FROM t1; +COUNT(*) +3 +SELECT COUNT(*) FROM t2; +COUNT(*) +6 +SELECT COUNT(*) FROM t3; +COUNT(*) +12 +DROP PROCEDURE insert_data; +DROP TABLE t1, t2, t3; +set storage_engine= @save_storage_engine; diff --git a/mysql-test/r/innodb_mrr.result b/mysql-test/r/innodb_mrr.result new file mode 100644 index 00000000000..4f1006878b4 --- /dev/null +++ b/mysql-test/r/innodb_mrr.result @@ -0,0 +1,767 @@ +drop table if exists t1,t2,t3,t4; +set @save_storage_engine= @@storage_engine; +set storage_engine=InnoDB; +create table t1(a int); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) DEFAULT NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; +create table t3 ( +a char(8) not null, b char(8) not null, filler char(200), +key(a) +); +insert into t3 select @a:=concat('c-', 1000+ A.a, '=w'), @a, 'filler' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 2000+A.a, '=w'), +'filler-1' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 3000+A.a, '=w'), +'filler-2' from t2 A; +select a,filler from t3 where a >= 'c-9011=w'; +a filler +select a,filler from t3 where a >= 'c-1011=w' and a <= 'c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=z', 'c-1013=z', 'err'); +insert into t3 values ('a-1014=w', 'a-1014=w', 'err'); +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +delete from t3 where b in ('c-1013=z', 'a-1014=w'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=w', 'del-me', 'inserted'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +c-1013=w inserted +delete from t3 where b='del-me'; +alter table t3 add primary key(b); +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w', 'c-1021=w', +'c-1022=w', 'c-1023=w', 'c-1024=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +c-1024=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1020=w') or +b IN ('c-1021=w', 'c-1022=w', 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w') or +(b>='c-1021=w' and b<= 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +drop table if exists t4; +create table t4 (a varchar(10), b int, c char(10), filler char(200), +key idx1 (a, b, c)); +insert into t4 (filler) select concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-1', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-222', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'bb-1',NULL,'cc-2', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'zz-1',NULL,'cc-2', 'filler-data' from t2 order by a limit 500; +explain +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Rowid-ordered scan +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +a b c filler +NULL NULL NULL NULL-15 +NULL NULL NULL NULL-14 +NULL NULL NULL NULL-13 +NULL NULL NULL NULL-12 +NULL NULL NULL NULL-11 +NULL NULL NULL NULL-10 +NULL NULL NULL NULL-9 +NULL NULL NULL NULL-8 +NULL NULL NULL NULL-7 +NULL NULL NULL NULL-6 +NULL NULL NULL NULL-5 +NULL NULL NULL NULL-4 +NULL NULL NULL NULL-3 +NULL NULL NULL NULL-2 +NULL NULL NULL NULL-1 +explain +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Rowid-ordered scan +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +select * from t4 ignore index(idx1) where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +drop table t1, t2, t3, t4; +create table t1 (a int, b int not null,unique key (a,b),index(b)); +insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6); +create table t2 like t1; +insert into t2 select * from t1; +alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10)); +select * from t1 where a is null; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3; +a b c +NULL 9 0 +NULL 9 0 +select * from t1 where a is null and b=9 or a is null and b=7 limit 3; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +drop table t1, t2; +set storage_engine= @save_storage_engine; +set @mrr_buffer_size_save= @@mrr_buffer_size; +set mrr_buffer_size=64; +Warnings: +Warning 1292 Truncated incorrect mrr_buffer_size value: '64' +create table t1(a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a char(8), b char(8), c char(8), filler char(100), key(a,b,c) ) engine=InnoDB; +insert into t2 select +concat('a-', 1000 + A.a, '-a'), +concat('b-', 1000 + B.a, '-b'), +concat('c-', 1000 + C.a, '-c'), +'filler' +from t1 A, t1 B, t1 C; +explain +select count(length(a) + length(filler)) from t2 where a>='a-1000-a' and a <'a-1001-a'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range a a 9 NULL 99 Using index condition; Rowid-ordered scan +select count(length(a) + length(filler)) from t2 where a>='a-1000-a' and a <'a-1001-a'; +count(length(a) + length(filler)) +100 +drop table t2; +create table t2 (a char(100), b char(100), c char(100), d int, +filler char(10), key(d), primary key (a,b,c)) engine= innodb; +insert into t2 select A.a, B.a, B.a, A.a, 'filler' from t1 A, t1 B; +explain select * from t2 force index (d) where d < 10; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range d d 5 NULL # Using index condition; Rowid-ordered scan +drop table t2; +drop table t1; +set @@mrr_buffer_size= @mrr_buffer_size_save; +create table t1 (f1 int not null, f2 int not null,f3 int not null, f4 char(1), primary key (f1,f2), key ix(f3))Engine=InnoDB; +select * from t1 where (f3>=5 and f3<=10) or (f3>=1 and f3<=4); +f1 f2 f3 f4 +1 1 1 A +2 2 2 A +3 3 3 A +4 4 4 A +5 5 5 A +6 6 6 A +7 7 7 A +8 8 8 A +9 9 9 A +10 10 10 A +drop table t1; + +BUG#37977: Wrong result returned on GROUP BY + OR + Innodb + +CREATE TABLE t1 ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_nokey` int(11) NOT NULL, +`int_key` int(11) NOT NULL, +`date_key` date NOT NULL, +`date_nokey` date NOT NULL, +`time_key` time NOT NULL, +`time_nokey` time NOT NULL, +`datetime_key` datetime NOT NULL, +`datetime_nokey` datetime NOT NULL, +`varchar_key` varchar(5) DEFAULT NULL, +`varchar_nokey` varchar(5) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `int_key` (`int_key`), +KEY `date_key` (`date_key`), +KEY `time_key` (`time_key`), +KEY `datetime_key` (`datetime_key`), +KEY `varchar_key` (`varchar_key`) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +(1,5,5,'2009-10-16','2009-10-16','09:28:15','09:28:15','2007-09-14 05:34:08','2007-09-14 05:34:08','qk','qk'), +(2,6,6,'0000-00-00','0000-00-00','23:06:39','23:06:39','0000-00-00 00:00:00','0000-00-00 00:00:00','j','j'), +(3,10,10,'2000-12-18','2000-12-18','22:16:19','22:16:19','2006-11-04 15:42:50','2006-11-04 15:42:50','aew','aew'), +(4,0,0,'2001-09-18','2001-09-18','00:00:00','00:00:00','2004-03-23 13:23:35','2004-03-23 13:23:35',NULL,NULL), +(5,6,6,'2007-08-16','2007-08-16','22:13:38','22:13:38','2004-08-19 11:01:28','2004-08-19 11:01:28','qu','qu'); +select pk from t1 WHERE `varchar_key` > 'kr' group by pk; +pk +1 +5 +select pk from t1 WHERE `int_nokey` IS NULL OR `varchar_key` > 'kr' group by pk; +pk +1 +5 +drop table t1; +# +# BUG#39447: Error with NOT NULL condition and LIMIT 1 +# +CREATE TABLE t1 ( +id int(11) NOT NULL, +parent_id int(11) DEFAULT NULL, +name varchar(10) DEFAULT NULL, +PRIMARY KEY (id), +KEY ind_parent_id (parent_id) +) ENGINE=InnoDB; +insert into t1 (id, parent_id, name) values +(10,NULL,'A'), +(20,10,'B'), +(30,10,'C'), +(40,NULL,'D'), +(50,40,'E'), +(60,40,'F'), +(70,NULL,'J'); +SELECT id FROM t1 WHERE parent_id IS NOT NULL ORDER BY id DESC LIMIT 1; +id +60 +This must show type=index, extra=Using where +explain SELECT * FROM t1 FORCE INDEX (PRIMARY) WHERE parent_id IS NOT NULL ORDER BY id DESC LIMIT 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 1 Using where +SELECT * FROM t1 WHERE parent_id IS NOT NULL ORDER BY id DESC LIMIT 1; +id parent_id name +60 40 F +drop table t1; +# +# BUG#628785: multi_range_read.cc:430: int DsMrr_impl::dsmrr_init(): Assertion `do_sort_keys || do_rowid_fetch' failed +# +set @save_join_cache_level= @@join_cache_level; +set @save_optimizer_switch= @@optimizer_switch; +SET SESSION join_cache_level=9; +Warnings: +Warning 1292 Truncated incorrect join_cache_level value: '9' +SET SESSION optimizer_switch='mrr_sort_keys=off'; +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=InnoDB AUTO_INCREMENT=101 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,6,NULL,'r','r'); +INSERT INTO `t1` VALUES (2,8,0,'c','c'); +INSERT INTO `t1` VALUES (97,7,0,'z','z'); +INSERT INTO `t1` VALUES (98,1,1,'j','j'); +INSERT INTO `t1` VALUES (99,7,8,'c','c'); +INSERT INTO `t1` VALUES (100,2,5,'f','f'); +SELECT table1 .`col_varchar_key` +FROM t1 table1 STRAIGHT_JOIN ( t1 table3 JOIN t1 table4 ON table4 .`pk` = table3 .`col_int_nokey` ) ON table4 .`col_varchar_nokey` ; +col_varchar_key +DROP TABLE t1; +set join_cache_level=@save_join_cache_level; +set optimizer_switch=@save_optimizer_switch; +# +# BUG#623300: Query with join_cache_level = 6 returns extra rows in maria-5.3-dsmrr-cpk +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_nokey int(11) DEFAULT NULL, +PRIMARY KEY (pk) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES (10,7); +INSERT INTO t1 VALUES (11,1); +INSERT INTO t1 VALUES (12,5); +INSERT INTO t1 VALUES (13,3); +INSERT INTO t1 VALUES (14,6); +INSERT INTO t1 VALUES (15,92); +INSERT INTO t1 VALUES (16,7); +INSERT INTO t1 VALUES (17,NULL); +INSERT INTO t1 VALUES (18,3); +INSERT INTO t1 VALUES (19,5); +INSERT INTO t1 VALUES (20,1); +INSERT INTO t1 VALUES (21,2); +INSERT INTO t1 VALUES (22,NULL); +INSERT INTO t1 VALUES (23,1); +INSERT INTO t1 VALUES (24,0); +INSERT INTO t1 VALUES (25,210); +INSERT INTO t1 VALUES (26,8); +INSERT INTO t1 VALUES (27,7); +INSERT INTO t1 VALUES (28,5); +INSERT INTO t1 VALUES (29,NULL); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_nokey int(11) DEFAULT NULL, +PRIMARY KEY (pk) +) ENGINE=InnoDB; +INSERT INTO t2 VALUES (1,NULL); +INSERT INTO t2 VALUES (2,7); +INSERT INTO t2 VALUES (3,9); +INSERT INTO t2 VALUES (4,7); +INSERT INTO t2 VALUES (5,4); +INSERT INTO t2 VALUES (6,2); +INSERT INTO t2 VALUES (7,6); +INSERT INTO t2 VALUES (8,8); +INSERT INTO t2 VALUES (9,NULL); +INSERT INTO t2 VALUES (10,5); +INSERT INTO t2 VALUES (11,NULL); +INSERT INTO t2 VALUES (12,6); +INSERT INTO t2 VALUES (13,188); +INSERT INTO t2 VALUES (14,2); +INSERT INTO t2 VALUES (15,1); +INSERT INTO t2 VALUES (16,1); +INSERT INTO t2 VALUES (17,0); +INSERT INTO t2 VALUES (18,9); +INSERT INTO t2 VALUES (19,NULL); +INSERT INTO t2 VALUES (20,4); +set @my_save_join_cache_level= @@join_cache_level; +SET join_cache_level = 0; +SELECT table2.col_int_nokey +FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey +WHERE table1.pk ; +col_int_nokey +2 +4 +4 +4 +6 +6 +6 +7 +8 +9 +9 +NULL +NULL +NULL +SET join_cache_level = 6; +SELECT table2.col_int_nokey +FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey +WHERE table1.pk ; +col_int_nokey +2 +4 +4 +4 +6 +6 +6 +7 +8 +9 +9 +NULL +NULL +NULL +set join_cache_level= @my_save_join_cache_level; +drop table t1, t2; +# +# BUG#623315: Query returns less rows when run with join_cache_level=6 on maria-5.3-dsmrr-cpk +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_nokey int(11) DEFAULT NULL, +col_int_key int(11) DEFAULT NULL, +col_varchar_key varchar(1) DEFAULT NULL, +PRIMARY KEY (pk), +KEY col_int_key (col_int_key), +KEY col_varchar_key (col_varchar_key,col_int_key) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES (10,7,8,'v'); +INSERT INTO t1 VALUES (11,1,9,'r'); +INSERT INTO t1 VALUES (12,5,9,'a'); +INSERT INTO t1 VALUES (13,3,186,'m'); +INSERT INTO t1 VALUES (14,6,NULL,'y'); +INSERT INTO t1 VALUES (15,92,2,'j'); +INSERT INTO t1 VALUES (16,7,3,'d'); +INSERT INTO t1 VALUES (17,NULL,0,'z'); +INSERT INTO t1 VALUES (18,3,133,'e'); +INSERT INTO t1 VALUES (19,5,1,'h'); +INSERT INTO t1 VALUES (20,1,8,'b'); +INSERT INTO t1 VALUES (21,2,5,'s'); +INSERT INTO t1 VALUES (22,NULL,5,'e'); +INSERT INTO t1 VALUES (23,1,8,'j'); +INSERT INTO t1 VALUES (24,0,6,'e'); +INSERT INTO t1 VALUES (25,210,51,'f'); +INSERT INTO t1 VALUES (26,8,4,'v'); +INSERT INTO t1 VALUES (27,7,7,'x'); +INSERT INTO t1 VALUES (28,5,6,'m'); +INSERT INTO t1 VALUES (29,NULL,4,'c'); +set @my_save_join_cache_level= @@join_cache_level; +SET join_cache_level=6; +select count(*) from +(SELECT table2.pk FROM +t1 LEFT JOIN t1 table2 JOIN t1 table3 ON table3.col_varchar_key = table2.col_varchar_key +ON table3.col_int_nokey) foo; +count(*) +480 +SET join_cache_level=0; +select count(*) from +(SELECT table2.pk FROM +t1 LEFT JOIN t1 table2 JOIN t1 table3 ON table3.col_varchar_key = table2.col_varchar_key +ON table3.col_int_nokey) foo; +count(*) +480 +set join_cache_level= @my_save_join_cache_level; +drop table t1; +# +# BUG#671340: Diverging results in with mrr_sort_keys=ON|OFF and join_cache_level=5 +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_key int(11) NOT NULL, +col_varchar_key varchar(1) NOT NULL, +col_varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY col_int_key (col_int_key), +KEY col_varchar_key (col_varchar_key,col_int_key) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +(10,8,'v','v'), +(11,8,'f','f'), +(12,5,'v','v'), +(13,8,'s','s'), +(14,8,'a','a'), +(15,6,'p','p'), +(16,7,'z','z'), +(17,2,'a','a'), +(18,5,'h','h'), +(19,7,'h','h'), +(20,2,'v','v'), +(21,9,'v','v'), +(22,142,'b','b'), +(23,3,'y','y'), +(24,0,'v','v'), +(25,3,'m','m'), +(26,5,'z','z'), +(27,9,'n','n'), +(28,1,'d','d'), +(29,107,'a','a'); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_key int(11) NOT NULL, +col_varchar_key varchar(1) NOT NULL, +col_varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY col_int_key (col_int_key), +KEY col_varchar_key (col_varchar_key,col_int_key) +) ENGINE=InnoDB; +INSERT INTO t2 VALUES +(1,9,'x','x'), +(2,5,'g','g'), +(3,1,'o','o'), +(4,0,'g','g'), +(5,1,'v','v'), +(6,190,'m','m'), +(7,6,'x','x'), +(8,3,'c','c'), +(9,4,'z','z'), +(10,3,'i','i'), +(11,186,'x','x'), +(12,1,'g','g'), +(13,8,'q','q'), +(14,226,'m','m'), +(15,133,'p','p'), +(16,6,'e','e'), +(17,3,'t','t'), +(18,8,'j','j'), +(19,5,'h','h'), +(20,7,'w','w'); +SELECT count(*), sum(table1.col_int_key*table2.pk) +FROM +t2 AS table1, t1 AS table2, t2 AS table3 +WHERE +table3.col_varchar_nokey = table2.col_varchar_key AND table3.pk > table2.col_varchar_nokey ; +count(*) sum(table1.col_int_key*table2.pk) +240 185955 +set @my_save_join_cache_level= @@join_cache_level; +set @my_save_join_buffer_size= @@join_buffer_size; +set join_cache_level=6; +set join_buffer_size=1500; +SELECT count(*), sum(table1.col_int_key*table2.pk) +FROM +t2 AS table1, t1 AS table2, t2 AS table3 +WHERE +table3.col_varchar_nokey = table2.col_varchar_key AND table3.pk > table2.col_varchar_nokey ; +count(*) sum(table1.col_int_key*table2.pk) +240 185955 +drop table t1,t2; +set join_cache_level=@my_save_join_cache_level; +set join_buffer_size=@my_save_join_buffer_size; +# +# BUG#665669: Result differences on query re-execution +# +create table t1 (pk int primary key, b int, c int default 0, index idx(b)) engine=innodb; +insert into t1(pk,b) values (3, 30), (2, 20), (9, 90), (7, 70), (4, 40), (5, 50), (10, 100), (12, 120); +set @my_save_optimizer_use_mrr=@@optimizer_use_mrr; +set optimizer_use_mrr='disable'; +explain select * from t1 where b > 1000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range idx idx 5 NULL 1 Using index condition +# The following two must produce indentical results: +select * from t1 where pk < 2 or pk between 3 and 4; +pk b c +3 30 0 +4 40 0 +select * from t1 where pk < 2 or pk between 3 and 4; +pk b c +3 30 0 +4 40 0 +drop table t1; +set optimizer_use_mrr = @my_save_optimizer_use_mrr; +# +# Bug#43360 - Server crash with a simple multi-table update +# +CREATE TABLE t1 ( +a CHAR(2) NOT NULL PRIMARY KEY, +b VARCHAR(20) NOT NULL, +KEY (b) +) ENGINE=InnoDB; +CREATE TABLE t2 ( +a CHAR(2) NOT NULL PRIMARY KEY, +b VARCHAR(20) NOT NULL, +KEY (b) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +('AB','MySQLAB'), +('JA','Sun Microsystems'), +('MS','Microsoft'), +('IB','IBM- Inc.'), +('GO','Google Inc.'); +INSERT INTO t2 VALUES +('AB','Sweden'), +('JA','USA'), +('MS','United States of America'), +('IB','North America'), +('GO','South America'); +Warnings: +Warning 1265 Data truncated for column 'b' at row 3 +UPDATE t1,t2 SET t1.b=UPPER(t1.b) WHERE t1.b LIKE 'United%'; +SELECT * FROM t1; +a b +GO Google Inc. +IB IBM- Inc. +MS Microsoft +AB MySQLAB +JA Sun Microsystems +SELECT * FROM t2; +a b +IB North America +GO South America +AB Sweden +MS United States of Ame +JA USA +DROP TABLE t1,t2; +# +# Testcase backport: Bug#43249 +# +CREATE TABLE t1(c1 TIME NOT NULL, c2 TIME NULL, c3 DATE, PRIMARY KEY(c1), UNIQUE INDEX(c2)) engine=innodb; +INSERT INTO t1 VALUES('8:29:45',NULL,'2009-02-01'); +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2; +c1 c2 c3 +08:29:45 NULL 2009-02-01 +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2; +c1 c2 c3 +08:29:45 NULL 2009-02-01 +drop table `t1`; +# +# BUG#707925: Wrong result with join_cache_level=6 optimizer_use_mrr = +# force (incremental, BKA join) +# +set @_save_join_cache_level= @@join_cache_level; +set join_cache_level = 6; +CREATE TABLE t1 ( +f1 int(11), f2 int(11), f3 varchar(1), f4 varchar(1), +PRIMARY KEY (f1), +KEY (f3), +KEY (f2) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES ('11','8','f','f'),('12','5','v','v'),('13','8','s','s'), +('14','8','a','a'),('15','6','p','p'),('16','7','z','z'),('17','2','a','a'), +('18','5','h','h'),('19','7','h','h'),('20','2','v','v'),('21','9','v','v'), +('22','142','b','b'),('23','3','y','y'),('24','0','v','v'),('25','3','m','m'), +('26','5','z','z'),('27','9','n','n'),('28','1','d','d'),('29','107','a','a'); +select count(*) from ( +SELECT alias1.f2 +FROM +t1 AS alias1 JOIN ( +t1 AS alias2 FORCE KEY (f3) JOIN +t1 AS alias3 FORCE KEY (f2) ON alias3.f2 = alias2.f2 AND alias3.f4 = alias2.f3 +) ON alias3.f1 <= alias2.f1 +) X; +count(*) +361 +set join_cache_level=@_save_join_cache_level; +drop table t1; diff --git a/mysql-test/r/innodb_mrr_cpk.result b/mysql-test/r/innodb_mrr_cpk.result new file mode 100644 index 00000000000..138bef49cea --- /dev/null +++ b/mysql-test/r/innodb_mrr_cpk.result @@ -0,0 +1,148 @@ +drop table if exists t0,t1,t2,t3; +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=6; +set @save_storage_engine=@@storage_engine; +set storage_engine=innodb; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(a char(8), b char(8), filler char(100), primary key(a)); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` char(8) NOT NULL DEFAULT '', + `b` char(8) DEFAULT NULL, + `filler` char(100) DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +insert into t1 select +concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'), +concat('b-', 1000 + A.a + B.a*10 + C.a*100, '=B'), +'filler' +from t0 A, t0 B, t0 C; +create table t2 (a char(8)); +insert into t2 values ('a-1010=A'), ('a-1030=A'), ('a-1020=A'); +This should use join buffer: +explain select * from t1, t2 where t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 8 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered scan +This output must be sorted by value of t1.a: +select * from t1, t2 where t1.a=t2.a; +a b filler a +a-1010=A b-1010=B filler a-1010=A +a-1020=A b-1020=B filler a-1020=A +a-1030=A b-1030=B filler a-1030=A +drop table t1, t2; +create table t1( +a char(8) character set utf8, b int, filler char(100), +primary key(a,b) +); +insert into t1 select +concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'), +1000 + A.a + B.a*10 + C.a*100, +'filler' +from t0 A, t0 B, t0 C; +create table t2 (a char(8) character set utf8, b int); +insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020); +explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +a b filler a b +a-1010=A 1010 filler a-1010=A 1010 +a-1020=A 1020 filler a-1020=A 1020 +a-1030=A 1030 filler a-1030=A 1030 +insert into t2 values ('a-1030=A', 1030), ('a-1020=A', 1020); +explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +a b filler a b +a-1010=A 1010 filler a-1010=A 1010 +a-1020=A 1020 filler a-1020=A 1020 +a-1020=A 1020 filler a-1020=A 1020 +a-1030=A 1030 filler a-1030=A 1030 +a-1030=A 1030 filler a-1030=A 1030 +drop table t1, t2; +create table t1( +a varchar(8) character set utf8, b int, filler char(100), +primary key(a,b) +); +insert into t1 select +concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'), +1000 + A.a + B.a*10 + C.a*100, +'filler' +from t0 A, t0 B, t0 C; +create table t2 (a char(8) character set utf8, b int); +insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020); +explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 30 test.t2.a,test.t2.b 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +a b filler a b +a-1010=A 1010 filler a-1010=A 1010 +a-1020=A 1020 filler a-1020=A 1020 +a-1030=A 1030 filler a-1030=A 1030 +explain select * from t1, t2 where t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 ref PRIMARY PRIMARY 26 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a; +a b filler a b +a-1010=A 1010 filler a-1010=A 1010 +a-1020=A 1020 filler a-1020=A 1020 +a-1030=A 1030 filler a-1030=A 1030 +drop table t1, t2; +create table t1 (a int, b int, c int, filler char(100), primary key(a,b,c)); +insert into t1 select A.a, B.a, C.a, 'filler' from t0 A, t0 B, t0 C; +insert into t1 values (11, 11, 11, 'filler'); +insert into t1 values (11, 11, 12, 'filler'); +insert into t1 values (11, 11, 13, 'filler'); +insert into t1 values (11, 22, 1234, 'filler'); +insert into t1 values (11, 33, 124, 'filler'); +insert into t1 values (11, 33, 125, 'filler'); +create table t2 (a int, b int); +insert into t2 values (11,33), (11,22), (11,11); +explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 ref PRIMARY PRIMARY 8 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +a b c filler a b +11 11 11 filler 11 11 +11 11 12 filler 11 11 +11 11 13 filler 11 11 +11 22 1234 filler 11 22 +11 33 124 filler 11 33 +11 33 125 filler 11 33 +set join_cache_level=0; +select * from t1, t2 where t1.a=t2.a and t1.b=t2.b; +a b c filler a b +11 33 124 filler 11 33 +11 33 125 filler 11 33 +11 22 1234 filler 11 22 +11 11 11 filler 11 11 +11 11 12 filler 11 11 +11 11 13 filler 11 11 +set join_cache_level=6; +explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100; +a b c filler a b +set optimizer_switch='index_condition_pushdown=off'; +explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan +select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100; +a b c filler a b +set optimizer_switch='index_condition_pushdown=on'; +drop table t1,t2; +set @@join_cache_level= @save_join_cache_level; +set storage_engine=@save_storage_engine; +drop table t0; diff --git a/mysql-test/r/innodb_release_row_locks_early.result b/mysql-test/r/innodb_release_row_locks_early.result new file mode 100644 index 00000000000..d544dc8df1f --- /dev/null +++ b/mysql-test/r/innodb_release_row_locks_early.result @@ -0,0 +1,104 @@ +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (k INT NOT NULL, a INT NOT NULL, b INT NOT NULL, c INT NOT NULL, PRIMARY KEY(k)) ENGINE=InnoDB; +INSERT INTO t1 (k, a, b, c) VALUES (1, 0, 0, 0); +INSERT INTO t1 (k, a, b, c) VALUES (2, 0, 0, 0); +INSERT INTO t1 (k, a, b, c) VALUES (3, 0, 0, 0); +INSERT INTO t1 (k, a, b, c) VALUES (4, 0, 0, 0); +RESET MASTER; +SET DEBUG_SYNC= 'RESET'; +# Connection c1 +SET binlog_format= mixed; +BEGIN; +UPDATE t1 SET a=10 WHERE k=1; +SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committing"; +COMMIT; +# Connection c2 +SET binlog_format= mixed; +SET DEBUG_SYNC="now WAIT_FOR c1_prepared"; +BEGIN; +SELECT * FROM t1 WHERE k=1 FOR UPDATE; +k a b c +1 10 0 0 +UPDATE t1 SET a=20 WHERE k=1; +SET DEBUG_SYNC="now SIGNAL c2_committing"; +COMMIT; +# Connection c1 +BEGIN; +UPDATE t1 SET a=10 WHERE k=2; +SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committed TIMEOUT 2"; +COMMIT; +# Connection c2 +SET DEBUG_SYNC="now WAIT_FOR c1_prepared"; +BEGIN; +SELECT * FROM t1 WHERE k=2 FOR UPDATE; +k a b c +2 10 0 0 +UPDATE t1 SET a=20 WHERE k=2; +SET DEBUG_SYNC="binlog_after_log_and_order SIGNAL c2_committed"; +COMMIT; +# Connection c1 +# This should warn about DEBUG_SYNC timeout +Warnings: +Warning 1639 debug sync point wait timed out +# Connection c2 +SHOW BINLOG EVENTS LIMIT 2,12; +Log_name Pos Event_type Server_id End_log_pos Info +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=10 WHERE k=1 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=20 WHERE k=1 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=10 WHERE k=2 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=20 WHERE k=2 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +# Connection c1 +RESET MASTER; +SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committing"; +UPDATE t1 SET a=10 WHERE k=3; +# Connection c2 +SET DEBUG_SYNC="now WAIT_FOR c1_prepared"; +SELECT * FROM t1 WHERE k=3 FOR UPDATE; +k a b c +3 10 0 0 +SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c2_committing"; +UPDATE t1 SET a=20 WHERE k=3; +# Connection c1 +SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committed TIMEOUT 2"; +UPDATE t1 SET a=10 WHERE k=4; +# Connection c2 +SET DEBUG_SYNC="now WAIT_FOR c1_prepared"; +SELECT * FROM t1 WHERE k=4 FOR UPDATE; +k a b c +4 10 0 0 +SET DEBUG_SYNC="binlog_after_log_and_order SIGNAL c2_committed"; +UPDATE t1 SET a=20 WHERE k=4; +# Connection c1 +# This should warn about DEBUG_SYNC timeout +Warnings: +Warning 1639 debug sync point wait timed out +# Connection c2 +SHOW BINLOG EVENTS LIMIT 1,12; +Log_name Pos Event_type Server_id End_log_pos Info +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=10 WHERE k=3 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=20 WHERE k=3 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=10 WHERE k=4 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; UPDATE t1 SET a=20 WHERE k=4 +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +SELECT * FROM t1 ORDER BY k; +k a b c +1 20 0 0 +2 20 0 0 +3 20 0 0 +4 20 0 0 +DROP TABLE t1; +SET DEBUG_SYNC= 'RESET'; diff --git a/mysql-test/r/join.result b/mysql-test/r/join.result index 96504df4b1e..935e3ee3b62 100644 --- a/mysql-test/r/join.result +++ b/mysql-test/r/join.result @@ -404,7 +404,7 @@ SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e ORDER BY t1.b, t1.c; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort -1 SIMPLE t2 ALL NULL NULL NULL NULL 16 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 16 Using where; Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e ORDER BY t1.b, t1.c; e @@ -846,7 +846,7 @@ select * from t1, t2, t3 where t3.a=t1.a and t2.a=t1.b; a b a a explain select * from t1, t2, t3 where t3.a=t1.a and t2.a=t1.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using index 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index We expect rnd_next=5, and read_key must be 0 because of short-cutting: @@ -869,7 +869,7 @@ insert into t3 select * from t2 where a < 800; explain select * from t2,t3 where t2.a < 200 and t2.b=t3.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL a,b NULL NULL NULL 1000 Using where -1 SIMPLE t3 ref b b 5 test.t2.b 1 Using where +1 SIMPLE t3 ref b b 5 test.t2.b 1 drop table t1, t2, t3; create table t1 (a int); insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); @@ -889,8 +889,8 @@ Z vv: Following query must use ALL(t1), eq_ref(A), eq_ref(B): vv explain select * from t1, t2 A, t2 B where A.a = t1.a and B.a=A.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 10 -1 SIMPLE A eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 Using where +1 SIMPLE A eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where 1 SIMPLE B eq_ref PRIMARY PRIMARY 4 test.A.b 1 show status like '%cost%'; Variable_name Value @@ -910,7 +910,7 @@ INSERT INTO t1 SELECT a + 64, b FROM t1; INSERT INTO t2 SELECT a, b FROM t1; EXPLAIN SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a LIMIT 2; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using where 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 EXPLAIN SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a LIMIT 2; id select_type table type possible_keys key key_len ref rows Extra @@ -924,7 +924,7 @@ a b c d 2 NULL 2 NULL EXPLAIN SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using filesort +1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using where; Using filesort 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 EXPLAIN SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a; id select_type table type possible_keys key key_len ref rows Extra @@ -1095,11 +1095,11 @@ ON t4.a = t5.a ON t1.a = t3.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t3 ref a a 5 test.t1.a 2 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 0 -1 SIMPLE t5 ALL NULL NULL NULL NULL 0 -1 SIMPLE t6 ALL NULL NULL NULL NULL 0 -1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using where; Using join buffer +1 SIMPLE t3 ref a a 5 test.t1.a 2 Using where; Using index +1 SIMPLE t4 ALL NULL NULL NULL NULL 0 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 0 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join) SELECT * FROM t1 JOIN t2 ON t1.a = t2.a @@ -1127,9 +1127,9 @@ EXPLAIN EXTENDED SELECT 1 FROM v1 right join v1 AS v2 ON RAND(); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select 1 AS `1` from `test`.`t1` left join `test`.`t1` `t2` on((1 = 1)) left join (`test`.`t1` left join `test`.`t1` `t2` on((1 = 1))) on(rand()) where 1 DROP VIEW v1; @@ -1220,4 +1220,103 @@ f1 2 DEALLOCATE PREPARE stmt; DROP TABLE t1; +# +# BUG#47217 Lost optimization caused slowdown & wrong result. +# +CREATE TABLE t1 (pk INT, v VARCHAR(2), PRIMARY KEY(pk)); +CREATE INDEX ix1 ON t1(v); +CREATE TABLE t2 (pk INT, v VARCHAR(2), PRIMARY KEY(pk)); +CREATE INDEX ix2 ON t2(v); +INSERT INTO t1 VALUES (1,'a'),(2,NULL); +INSERT INTO t2 VALUES (1,NULL); +EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.v = t2.v ORDER BY 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.v = t2.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +INSERT INTO t1 VALUES (3,'b'),(4,NULL),(5,'c'),(6,'cc'),(7,'d'), +(8,'dd'),(9,'e'),(10,'ee'); +INSERT INTO t2 VALUES (2,NULL); +FLUSH STATUS; +SELECT * FROM t1 JOIN t2 ON t1.v = t2.v WHERE t2.v IS NULL ORDER BY 1; +pk v pk v +SHOW STATUS LIKE 'Handler_read_%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 1 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 1 +DROP TABLE t1, t2; End of 5.1 tests +# +# BUG#724275: Crash in JOIN::optimize in maria-5.3 +# +create table t1 (a int); +insert into t1 values (1),(2); +insert into t1 select * from t1; +create table t2 (a int, b int, key(a,b)); +insert into t2 values (1,1),(1,2),(1,3),(1,4),(2,5),(2,6),(2,7),(2,8),(2,9); +insert into t2 select * from t2; +insert into t2 select * from t2; +insert into t2 select * from t2; +create table t3 (a int, b int, key(a)); +insert into t3 values (1,1),(2,2); +select * from +t3 straight_join t1 straight_join t2 force index(a) +where t2.a=1 and t2.b=t1.a and t1.a=t3.b and t3.a=1; +a b a a b +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +1 1 1 1 1 +drop table t1,t2,t3; +# +# BUG#729067/730466: unexpected 'Range checked for each record' +# for queries with OR in WHERE clause +# +CREATE TABLE t1 (f1 int, f2 int) ; +INSERT INTO t1 VALUES (4,0),(5,1); +CREATE TABLE t2 (f1 int, f2 int, KEY (f2)) ; +INSERT INTO t2 VALUES (5,7), (8,9); +EXPLAIN +SELECT * FROM t1 STRAIGHT_JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1<>0 OR t1.f2<>0 AND t1.f1 = t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ALL f2 NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +SELECT * FROM t1 STRAIGHT_JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1<>0 OR t1.f2<>0 AND t1.f1 = t2.f2; +f1 f2 f1 f2 +5 1 5 7 +DROP TABLE t1,t2; +CREATE TABLE t1(f1 int PRIMARY KEY, f2 int) ; +INSERT INTO t1 VALUES (9,4), (10,9); +CREATE TABLE t2(f1 int PRIMARY KEY, f2 int) ; +INSERT INTO t2 VALUES (9,4), (10,9); +EXPLAIN +SELECT STRAIGHT_JOIN * FROM t1 JOIN t2 ON t2.f2 = t1.f1 +WHERE t1.f1 IN (SELECT f1 FROM t1) AND t1.f1 = t2.f1 OR t1.f1 = 9; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 2 Using where +1 PRIMARY t2 ALL PRIMARY NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY t1 index NULL PRIMARY 4 NULL 2 Using index +SELECT STRAIGHT_JOIN * FROM t1 JOIN t2 ON t2.f2 = t1.f1 +WHERE t1.f1 IN (SELECT f1 FROM t1) AND t1.f1 = t2.f1 OR t1.f1 = 9; +f1 f2 f1 f2 +9 4 10 9 +DROP TABLE t1,t2; diff --git a/mysql-test/r/join_cache.result b/mysql-test/r/join_cache.result new file mode 100644 index 00000000000..3bc8392e25a --- /dev/null +++ b/mysql-test/r/join_cache.result @@ -0,0 +1,4967 @@ +DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11; +DROP DATABASE IF EXISTS world; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL +); +CREATE TABLE City ( +ID int(11) NOT NULL, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0' +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0' +); +SELECT COUNT(*) FROM Country; +COUNT(*) +239 +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM CountryLanguage; +COUNT(*) +984 +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where; Using join buffer (flat, BNL join) +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=2; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 2 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where; Using join buffer (flat, BNL join) +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (incremental, BNL join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=3; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 3 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=4; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 4 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (incremental, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND City.Population > 5000000 +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND +(City.Population > 5000000 OR City.Name LIKE 'Za%') +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +China 1277558000 Zaozhuang 380846 +China 1277558000 Zaoyang 162198 +China 1277558000 Zalantun 130031 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +CREATE INDEX City_Population ON City(Population); +CREATE INDEX City_Name ON City(Name); +ANALYZE TABLE City; +EXPLAIN +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND City.Population > 5000000 +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_range City_Population #hash#$hj:City_Population 3:4 world.Country.Code 25 Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join) +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND City.Population > 5000000 +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +EXPLAIN +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND +(City.Population > 5000000 OR City.Name LIKE 'Za%') +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_index_merge City_Population,City_Name #hash#$hj:City_Population,City_Name 3:4,35 world.Country.Code 96 Using sort_union(City_Population,City_Name); Using where; Using join buffer (flat, BNLH join) +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND +(City.Population > 5000000 OR City.Name LIKE 'Za%') +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +China 1277558000 Zaozhuang 380846 +China 1277558000 Zaoyang 162198 +China 1277558000 Zalantun 130031 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +DROP INDEX City_Population ON City; +DROP INDEX City_Name ON City; +set join_cache_level=default; +set join_buffer_size=256; +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 256 +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=2; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 2 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where; Using join buffer (flat, BNL join) +1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where; Using join buffer (incremental, BNL join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=3; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 3 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=4; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 4 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (incremental, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +set join_cache_level=default; +set join_buffer_size=default; +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +DROP DATABASE world; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +); +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +set join_cache_level=3; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 3 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country hash_ALL PRIMARY #hash#PRIMARY 3 world.CountryLanguage.Country 239 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL Country #hash#Country 3 world.CountryLanguage.Country 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage hash_ALL PRIMARY #hash#PRIMARY 33 world.Country.Code,const 984 Using where; Using join buffer (flat, BNLH join) +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +set join_cache_level=4; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 4 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country hash_ALL PRIMARY #hash#PRIMARY 3 world.CountryLanguage.Country 239 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL Country #hash#Country 3 world.CountryLanguage.Country 4079 Using where; Using join buffer (incremental, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage hash_ALL PRIMARY #hash#PRIMARY 33 world.Country.Code,const 984 Using where; Using join buffer (flat, BNLH join) +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +EXPLAIN +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND City.Population > 5000000 +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range Name Name 52 NULL # Using index condition; Using where; Rowid-ordered scan +1 SIMPLE City hash_range Population,Country #hash#Country:Population 3:4 world.Country.Code # Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join) +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND City.Population > 5000000 +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +CREATE INDEX City_Name ON City(Name); +EXPLAIN +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND +(City.Population > 5000000 OR City.Name LIKE 'Za%') +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range Name Name 52 NULL 17 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE City hash_index_merge Population,Country,City_Name #hash#Country:Population,City_Name 3:4,35 world.Country.Code 96 Using sort_union(Population,City_Name); Using where; Using join buffer (flat, BNLH join) +SELECT Country.Name, Country.Population, City.Name, City.Population +FROM Country LEFT JOIN City +ON City.Country=Country.Code AND +(City.Population > 5000000 OR City.Name LIKE 'Za%') +WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000; +Name Population Name Population +China 1277558000 Shanghai 9696300 +China 1277558000 Peking 7472000 +China 1277558000 Chongqing 6351600 +China 1277558000 Tianjin 5286800 +China 1277558000 Zaozhuang 380846 +China 1277558000 Zaoyang 162198 +China 1277558000 Zalantun 130031 +Colombia 42321000 Santafé de Bogotá 6260862 +Congo, The Democratic Republic of the 51654000 Kinshasa 5064000 +Chile 15211000 NULL NULL +Cambodia 11168000 NULL NULL +Cameroon 15085000 NULL NULL +Canada 31147000 NULL NULL +Cuba 11201000 NULL NULL +Côte d?Ivoire 14786000 NULL NULL +Czech Republic 10278100 NULL NULL +DROP INDEX City_Name ON City; +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +set join_cache_level=5; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 5 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +set join_cache_level=7; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 7 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +set join_cache_level=8; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 8 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +EXPLAIN +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where +1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +FROM Country LEFT JOIN CountryLanguage ON +(CountryLanguage.Country=Country.Code AND Language='English') +WHERE +Country.Population > 10000000; +Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage) +Australia 81.2 +United Kingdom 97.3 +Canada 60.4 +United States 86.2 +Zimbabwe 2.2 +Japan 0.1 +South Africa 8.5 +Malaysia 1.6 +Afghanistan NULL +Netherlands NULL +Algeria NULL +Angola NULL +Argentina NULL +Bangladesh NULL +Belgium NULL +Brazil NULL +Burkina Faso NULL +Chile NULL +Ecuador NULL +Egypt NULL +Spain NULL +Ethiopia NULL +Philippines NULL +Ghana NULL +Guatemala NULL +Indonesia NULL +India NULL +Iraq NULL +Iran NULL +Italy NULL +Yemen NULL +Yugoslavia NULL +Cambodia NULL +Cameroon NULL +Kazakstan NULL +Kenya NULL +China NULL +Colombia NULL +Congo, The Democratic Republic of the NULL +North Korea NULL +South Korea NULL +Greece NULL +Cuba NULL +Madagascar NULL +Malawi NULL +Mali NULL +Morocco NULL +Mexico NULL +Mozambique NULL +Myanmar NULL +Nepal NULL +Niger NULL +Nigeria NULL +Côte d?Ivoire NULL +Pakistan NULL +Peru NULL +Poland NULL +France NULL +Romania NULL +Germany NULL +Saudi Arabia NULL +Somalia NULL +Sri Lanka NULL +Sudan NULL +Syria NULL +Taiwan NULL +Tanzania NULL +Thailand NULL +Czech Republic NULL +Turkey NULL +Uganda NULL +Ukraine NULL +Hungary NULL +Uzbekistan NULL +Belarus NULL +Venezuela NULL +Russian Federation NULL +Vietnam NULL +set join_buffer_size=256; +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 256 +set join_cache_level=3; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 3 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country hash_ALL PRIMARY #hash#PRIMARY 3 world.CountryLanguage.Country 239 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL Country #hash#Country 3 world.CountryLanguage.Country 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=4; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 4 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country hash_ALL PRIMARY #hash#PRIMARY 3 world.CountryLanguage.Country 239 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL Country #hash#Country 3 world.CountryLanguage.Country 4079 Using where; Using join buffer (incremental, BNLH join) +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=5; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 5 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=7; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 7 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=8; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 8 +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +EXPLAIN +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name, CountryLanguage.Language +FROM City,Country,CountryLanguage +WHERE City.Country=Country.Code AND +CountryLanguage.Country=Country.Code AND +City.Name LIKE 'L%' AND Country.Population > 3000000 AND +CountryLanguage.Percentage > 50 AND +LENGTH(Language) < LENGTH(City.Name) - 2; +Name Name Language +La Matanza Argentina Spanish +Lomas de Zamora Argentina Spanish +Lauro de Freitas Brazil Portuguese +Los Angeles Chile Spanish +Las Palmas de Gran Canaria Spain Spanish +L´Hospitalet de Llobregat Spain Spanish +Lleida (Lérida) Spain Spanish +Liupanshui China Chinese +Lianyungang China Chinese +Liangcheng China Chinese +Lengshuijiang China Chinese +Lázaro Cárdenas Mexico Spanish +Lagos de Moreno Mexico Spanish +Las Margaritas Mexico Spanish +Lashio (Lasho) Myanmar Burmese +Lalitapur Nepal Nepali +Ludwigshafen am Rhein Germany German +Leverkusen Germany German +Luchou Taiwan Min +Lungtan Taiwan Min +Lower Hutt New Zealand English +Los Teques Venezuela Spanish +Leninsk-Kuznetski Russian Federation Russian +Los Angeles United States English +Long Beach United States English +Lexington-Fayette United States English +Louisville United States English +Little Rock United States English +EXPLAIN +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan +1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT Name FROM City +WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND +City.Population > 100000; +Name +Vientiane +Riga +Daugavpils +Maseru +Beirut +Tripoli +Monrovia +Tripoli +Bengasi +Misrata +Vilnius +Kaunas +Klaipeda +?iauliai +Panevezys +set join_cache_level=default; +set join_buffer_size=default; +show variables like 'join_buffer_size'; +Variable_name Value +join_buffer_size 131072 +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set join_cache_level=1; +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND City.Population > 3000000; +Name Name +Sydney Australia +Dhaka Bangladesh +São Paulo Brazil +Rio de Janeiro Brazil +London United Kingdom +Santiago de Chile Chile +Cairo Egypt +Alexandria Egypt +Jakarta Indonesia +Mumbai (Bombay) India +Delhi India +Calcutta [Kolkata] India +Chennai (Madras) India +Baghdad Iraq +Teheran Iran +Tokyo Japan +Jokohama [Yokohama] Japan +Shanghai China +Peking China +Chongqing China +Tianjin China +Wuhan China +Harbin China +Shenyang China +Kanton [Guangzhou] China +Chengdu China +Santafé de Bogotá Colombia +Kinshasa Congo, The Democratic Republic of the +Seoul South Korea +Pusan South Korea +Ciudad de México Mexico +Rangoon (Yangon) Myanmar +Karachi Pakistan +Lahore Pakistan +Lima Peru +Berlin Germany +Riyadh Saudi Arabia +Singapore Singapore +Bangkok Thailand +Istanbul Turkey +Ankara Turkey +Moscow Russian Federation +St Petersburg Russian Federation +Ho Chi Minh City Vietnam +New York United States +Los Angeles United States +set join_cache_level=8; +set join_buffer_size=384; +EXPLAIN +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND City.Population > 3000000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country Population 4 NULL # Using index condition; Rowid-ordered scan +1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country # Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND City.Population > 3000000; +Name Name +Alexandria Egypt +Ankara Turkey +Baghdad Iraq +Bangkok Thailand +Berlin Germany +Cairo Egypt +Calcutta [Kolkata] India +Chengdu China +Chennai (Madras) India +Chongqing China +Ciudad de México Mexico +Delhi India +Dhaka Bangladesh +Harbin China +Ho Chi Minh City Vietnam +Istanbul Turkey +Jakarta Indonesia +Jokohama [Yokohama] Japan +Kanton [Guangzhou] China +Karachi Pakistan +Kinshasa Congo, The Democratic Republic of the +Lahore Pakistan +Lima Peru +London United Kingdom +Los Angeles United States +Moscow Russian Federation +Mumbai (Bombay) India +New York United States +Peking China +Pusan South Korea +Rangoon (Yangon) Myanmar +Rio de Janeiro Brazil +Riyadh Saudi Arabia +Santafé de Bogotá Colombia +Santiago de Chile Chile +Seoul South Korea +Shanghai China +Shenyang China +Singapore Singapore +St Petersburg Russian Federation +Sydney Australia +São Paulo Brazil +Teheran Iran +Tianjin China +Tokyo Japan +Wuhan China +set join_buffer_size=default; +set join_cache_level=6; +ALTER TABLE Country MODIFY Name varchar(52) NOT NULL default ''; +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +ALTER TABLE Country MODIFY Name varchar(300) NOT NULL default ''; +SELECT City.Name, Country.Name FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name +Vientiane Laos +Riga Latvia +Daugavpils Latvia +Maseru Lesotho +Beirut Lebanon +Tripoli Lebanon +Monrovia Liberia +Tripoli Libyan Arab Jamahiriya +Bengasi Libyan Arab Jamahiriya +Misrata Libyan Arab Jamahiriya +Vilnius Lithuania +Kaunas Lithuania +Klaipeda Lithuania +?iauliai Lithuania +Panevezys Lithuania +ALTER TABLE Country ADD COLUMN PopulationBar text; +UPDATE Country +SET PopulationBar=REPEAT('x', CAST(Population/100000 AS unsigned int)); +SELECT City.Name, Country.Name, Country.PopulationBar FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name PopulationBar +Vientiane Laos xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Riga Latvia xxxxxxxxxxxxxxxxxxxxxxxx +Daugavpils Latvia xxxxxxxxxxxxxxxxxxxxxxxx +Maseru Lesotho xxxxxxxxxxxxxxxxxxxxxx +Beirut Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Tripoli Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Monrovia Liberia xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Tripoli Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Bengasi Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Misrata Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Vilnius Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Kaunas Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Klaipeda Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +?iauliai Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Panevezys Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +set join_buffer_size=256; +SELECT City.Name, Country.Name, Country.PopulationBar FROM City,Country +WHERE City.Country=Country.Code AND +Country.Name LIKE 'L%' AND City.Population > 100000; +Name Name PopulationBar +Vientiane Laos xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Riga Latvia xxxxxxxxxxxxxxxxxxxxxxxx +Daugavpils Latvia xxxxxxxxxxxxxxxxxxxxxxxx +Maseru Lesotho xxxxxxxxxxxxxxxxxxxxxx +Beirut Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Tripoli Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Monrovia Liberia xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Tripoli Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Bengasi Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Misrata Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Vilnius Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Kaunas Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Klaipeda Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +?iauliai Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +Panevezys Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx +set join_cache_level=default; +set join_buffer_size=default; +DROP DATABASE world; +use test; +CREATE TABLE t1( +affiliatetometaid int NOT NULL default '0', +uniquekey int NOT NULL default '0', +metaid int NOT NULL default '0', +affiliateid int NOT NULL default '0', +xml text, +isactive char(1) NOT NULL default 'Y', +PRIMARY KEY (affiliatetometaid) +); +CREATE UNIQUE INDEX t1_uniquekey ON t1(uniquekey); +CREATE INDEX t1_affiliateid ON t1(affiliateid); +CREATE INDEX t1_metaid on t1 (metaid); +INSERT INTO t1 VALUES +(1616, 1571693233, 1391, 2, NULL, 'Y'), (1943, 1993216749, 1726, 2, NULL, 'Y'); +CREATE TABLE t2( +metaid int NOT NULL default '0', +name varchar(80) NOT NULL default '', +dateadded timestamp NOT NULL , +xml text, +status int default NULL, +origin int default NULL, +gid int NOT NULL default '1', +formattypeid int default NULL, +PRIMARY KEY (metaid) +); +CREATE INDEX t2_status ON t2(status); +CREATE INDEX t2_gid ON t2(gid); +CREATE INDEX t2_formattypeid ON t2(formattypeid); +INSERT INTO t2 VALUES +(1391, "I Just Died", "2003-10-02 10:07:37", "", 1, NULL, 3, NULL), +(1726, "Me, Myself & I", "2003-12-05 11:24:36", " ", 1, NULL, 3, NULL); +CREATE TABLE t3( +mediaid int NOT NULL , +metaid int NOT NULL default '0', +formatid int NOT NULL default '0', +status int default NULL, +path varchar(100) NOT NULL default '', +datemodified timestamp NOT NULL , +resourcetype int NOT NULL default '1', +parameters text, +signature int default NULL, +quality int NOT NULL default '255', +PRIMARY KEY (mediaid) +); +CREATE INDEX t3_metaid ON t3(metaid); +CREATE INDEX t3_formatid ON t3(formatid); +CREATE INDEX t3_status ON t3(status); +CREATE INDEX t3_metaidformatid ON t3(metaid,formatid); +CREATE INDEX t3_signature ON t3(signature); +CREATE INDEX t3_quality ON t3(quality); +INSERT INTO t3 VALUES +(6, 4, 8, 0, "010101_anastacia_spmidi.mid", "2004-03-16 13:40:00", 1, NULL, NULL, 255), +(3343, 3, 8, 1, "010102_4VN4bsPwnxRQUJW5Zp1RhG2IL9vvl_8.mid", "2004-03-16 13:40:00", 1, NULL, NULL, 255); +CREATE TABLE t4( +formatid int NOT NULL , +name varchar(60) NOT NULL default '', +formatclassid int NOT NULL default '0', +mime varchar(60) default NULL, +extension varchar(10) default NULL, +priority int NOT NULL default '0', +canaddtocapability char(1) NOT NULL default 'Y', +PRIMARY KEY (formatid) +); +CREATE INDEX t4_formatclassid ON t4(formatclassid); +CREATE INDEX t4_formats_idx ON t4(canaddtocapability); +INSERT INTO t4 VALUES +(19, "XHTML", 11, "text/html", "xhtml", 10, 'Y'), +(54, "AMR (wide band)", 13, "audio/amr-wb", "awb", 0, 'Y'); +CREATE TABLE t5( +formatclassid int NOT NULL , +name varchar(60) NOT NULL default '', +priority int NOT NULL default '0', +formattypeid int NOT NULL default '0', +PRIMARY KEY (formatclassid) +); +CREATE INDEX t5_formattypeid on t5(formattypeid); +INSERT INTO t5 VALUES +(11, "Info", 0, 4), (13, "Digital Audio", 0, 2); +CREATE TABLE t6( +formattypeid int NOT NULL , +name varchar(60) NOT NULL default '', +priority int default NULL, +PRIMARY KEY (formattypeid) +); +INSERT INTO t6 VALUES +(2, "Ringtones", 0); +CREATE TABLE t7( +metaid int NOT NULL default '0', +artistid int NOT NULL default '0', +PRIMARY KEY (metaid,artistid) +); +INSERT INTO t7 VALUES +(4, 5), (3, 4); +CREATE TABLE t8( +artistid int NOT NULL , +name varchar(80) NOT NULL default '', +PRIMARY KEY (artistid) +); +INSERT INTO t8 VALUES +(5, "Anastacia"), (4, "John Mayer"); +CREATE TABLE t9( +subgenreid int NOT NULL default '0', +metaid int NOT NULL default '0', +PRIMARY KEY (subgenreid,metaid) +) ; +CREATE INDEX t9_subgenreid ON t9(subgenreid); +CREATE INDEX t9_metaid ON t9(metaid); +INSERT INTO t9 VALUES +(138, 4), (31, 3); +CREATE TABLE t10( +subgenreid int NOT NULL , +genreid int NOT NULL default '0', +name varchar(80) NOT NULL default '', +PRIMARY KEY (subgenreid) +) ; +CREATE INDEX t10_genreid ON t10(genreid); +INSERT INTO t10 VALUES +(138, 19, ''), (31, 3, ''); +CREATE TABLE t11( +genreid int NOT NULL default '0', +name char(80) NOT NULL default '', +priority int NOT NULL default '0', +masterclip char(1) default NULL, +PRIMARY KEY (genreid) +) ; +CREATE INDEX t11_masterclip ON t11( masterclip); +INSERT INTO t11 VALUES +(19, "Pop & Dance", 95, 'Y'), (3, "Rock & Alternative", 100, 'Y'); +set join_cache_level=6; +EXPLAIN +SELECT t1.uniquekey, t1.xml AS affiliateXml, +t8.name AS artistName, t8.artistid, +t11.name AS genreName, t11.genreid, t11.priority AS genrePriority, +t10.subgenreid, t10.name AS subgenreName, +t2.name AS metaName, t2.metaid, t2.xml AS metaXml, +t4.priority + t5.priority + t6.priority AS overallPriority, +t3.path AS path, t3.mediaid, +t4.formatid, t4.name AS formatName, +t5.formatclassid, t5.name AS formatclassName, +t6.formattypeid, t6.name AS formattypeName +FROM t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11 +WHERE t7.metaid = t2.metaid AND t7.artistid = t8.artistid AND +t9.metaid = t2.metaid AND t9.subgenreid = t10.subgenreid AND +t10.genreid = t11.genreid AND t3.metaid = t2.metaid AND +t3.formatid = t4.formatid AND t4.formatclassid = t5.formatclassid AND +t4.canaddtocapability = 'Y' AND t5.formattypeid = t6.formattypeid AND +t6.formattypeid IN (2) AND (t3.formatid IN (31, 8, 76)) AND +t1.metaid = t2.metaid AND t1.affiliateid = '2'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t6 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 ref t1_affiliateid,t1_metaid t1_affiliateid 4 const 1 +1 SIMPLE t4 ref PRIMARY,t4_formatclassid,t4_formats_idx t4_formats_idx 1 const 1 Using index condition; Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 eq_ref PRIMARY,t5_formattypeid PRIMARY 4 test.t4.formatclassid 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t7 ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using index +1 SIMPLE t3 ref t3_metaid,t3_formatid,t3_metaidformatid t3_metaid 4 test.t1.metaid 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t8 eq_ref PRIMARY PRIMARY 4 test.t7.artistid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t9 index PRIMARY,t9_subgenreid,t9_metaid PRIMARY 8 NULL 2 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE t10 eq_ref PRIMARY,t10_genreid PRIMARY 4 test.t9.subgenreid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t10.genreid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t1.uniquekey, t1.xml AS affiliateXml, +t8.name AS artistName, t8.artistid, +t11.name AS genreName, t11.genreid, t11.priority AS genrePriority, +t10.subgenreid, t10.name AS subgenreName, +t2.name AS metaName, t2.metaid, t2.xml AS metaXml, +t4.priority + t5.priority + t6.priority AS overallPriority, +t3.path AS path, t3.mediaid, +t4.formatid, t4.name AS formatName, +t5.formatclassid, t5.name AS formatclassName, +t6.formattypeid, t6.name AS formattypeName +FROM t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11 +WHERE t7.metaid = t2.metaid AND t7.artistid = t8.artistid AND +t9.metaid = t2.metaid AND t9.subgenreid = t10.subgenreid AND +t10.genreid = t11.genreid AND t3.metaid = t2.metaid AND +t3.formatid = t4.formatid AND t4.formatclassid = t5.formatclassid AND +t4.canaddtocapability = 'Y' AND t5.formattypeid = t6.formattypeid AND +t6.formattypeid IN (2) AND (t3.formatid IN (31, 8, 76)) AND +t1.metaid = t2.metaid AND t1.affiliateid = '2'; +uniquekey affiliateXml artistName artistid genreName genreid genrePriority subgenreid subgenreName metaName metaid metaXml overallPriority path mediaid formatid formatName formatclassid formatclassName formattypeid formattypeName +DROP TABLE t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11; +CREATE TABLE t1 (a1 int, filler1 char(64) default ' ' ); +CREATE TABLE t2 ( +a2 int, b2 int, filler2 char(64) default ' ', +PRIMARY KEY idx(a2,b2,filler2) +) ; +CREATE TABLE t3 (b3 int, c3 int, INDEX idx(b3)); +INSERT INTO t1(a1) VALUES +(4), (7), (1), (9), (8), (5), (3), (6), (2); +INSERT INTO t2(a2,b2) VALUES +(1,30), (3,40), (2,61), (6,73), (8,92), (9,27), (4,18), (5,84), (7,56), +(4,14), (6,76), (8,98), (7,55), (1,39), (2,68), (3,45), (9,21), (5,81), +(5,88), (2,65), (6,74), (9,23), (1,37), (3,44), (4,17), (8,99), (7,51), +(9,28), (7,52), (1,33), (4,13), (5,87), (3,43), (8,91), (2,62), (6,79), +(3,49), (8,93), (7,34), (5,82), (6,78), (2,63), (1,32), (9,22), (4,11); +INSERT INTO t3 VALUES +(30,302), (92,923), (18,187), (45,459), (30,309), +(39,393), (68,685), (45,458), (21,210), (81,817), +(40,405), (61,618), (73,738), (92,929), (27,275), +(18,188), (84,846), (56,564), (14,144), (76,763), +(98,982), (55,551), (17,174), (99,998), (51,513), +(28,282), (52,527), (33,336), (13,138), (87,878), +(43,431), (91,916), (62,624), (79,797), (49,494), +(93,933), (34,347), (82,829), (78,780), (63,634), +(32,329), (22,228), (11,114), (74,749), (23,236); +set join_cache_level=1; +EXPLAIN +SELECT a1<>a2, a1, a2, b2, b3, c3, +SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2 +FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using where +1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index +1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where +SELECT a1<>a2, a1, a2, b2, b3, c3, +SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2 +FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7; +a1<>a2 a1 a2 b2 b3 c3 s1 s2 +0 4 4 13 13 138 +0 4 4 18 18 188 +0 1 1 30 30 309 +0 1 1 32 32 329 +0 9 9 22 22 228 +0 8 8 92 92 929 +0 8 8 99 99 998 +0 5 5 82 82 829 +0 5 5 87 87 878 +0 3 3 45 45 459 +0 3 3 45 45 458 +0 6 6 73 73 738 +0 6 6 74 74 749 +0 2 2 61 61 618 +set join_cache_level=5; +set join_buffer_size=512; +EXPLAIN +SELECT a1<>a2, a1, a2, b2, b3, c3, +SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2 +FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using where +1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index +1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT a1<>a2, a1, a2, b2, b3, c3, +SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2 +FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7; +a1<>a2 a1 a2 b2 b3 c3 s1 s2 +0 4 4 18 18 188 +0 4 4 13 13 138 +0 1 1 30 30 309 +0 1 1 32 32 329 +0 9 9 22 22 228 +0 8 8 92 92 929 +0 8 8 99 99 998 +0 5 5 82 82 829 +0 3 3 45 45 459 +0 3 3 45 45 458 +0 5 5 87 87 878 +0 2 2 61 61 618 +0 6 6 73 73 738 +0 6 6 74 74 749 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int, b int, INDEX idx(b)); +CREATE TABLE t2 (a int, b int, INDEX idx(a)); +INSERT INTO t1 VALUES (5,30), (3,20), (7,40), (2,10), (8,30), (1,10), (4,20); +INSERT INTO t2 VALUES (7,10), (1,20), (2,20), (8,20), (8,10), (1,20); +INSERT INTO t2 VALUES (1,10), (4,20), (3,20), (7,20), (7,10), (1,20); +set join_buffer_size=32; +Warnings: +Warning 1292 Truncated incorrect join_buffer_size value: '32' +set join_cache_level=8; +EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 7 Using where +1 SIMPLE t2 ref idx idx 5 test.t1.a 2 Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30; +a b a b +7 40 7 10 +7 40 7 10 +7 40 7 20 +8 30 8 10 +8 30 8 20 +DROP TABLE t1,t2; +# +# Bug #40134: outer join with not exists optimization and join buffer +# +set join_cache_level=default; +set join_buffer_size=default; +CREATE TABLE t1 (a int NOT NULL); +INSERT INTO t1 VALUES (2), (4), (3), (5), (1); +CREATE TABLE t2 (a int NOT NULL, b int NOT NULL, INDEX i_a(a)); +INSERT INTO t2 VALUES (4,10), (2,10), (2,30), (2,20), (4,20); +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL; +a a b +3 NULL NULL +5 NULL NULL +1 NULL NULL +SET join_cache_level=6; +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL; +a a b +3 NULL NULL +5 NULL NULL +1 NULL NULL +DROP TABLE t1, t2; +set join_cache_level=default; +set join_buffer_size=default; +# +# BUG#40136: Group by is ignored when join buffer is used for an outer join +# +create table t1(a int PRIMARY KEY, b int); +insert into t1 values +(5, 10), (2, 70), (7, 80), (6, 20), (1, 50), (9, 40), (8, 30), (3, 60); +create table t2 (p int, a int, INDEX i_a(a)); +insert into t2 values +(103, 7), (109, 3), (102, 3), (108, 1), (106, 3), +(107, 7), (105, 1), (101, 3), (100, 7), (110, 1); +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=6; +The following must not show "using join cache": +explain +select t1.a, count(t2.p) as count +from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort +1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select t1.a, count(t2.p) as count +from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a; +a count +1 1 +2 0 +3 2 +5 0 +6 0 +7 2 +8 0 +9 0 +set join_cache_level=@save_join_cache_level; +drop table t1, t2; +# +# BUG#40268: Nested outer join with not null-rejecting where condition +# over an inner table which is not the last in the nest +# +CREATE TABLE t2 (a int, b int, c int); +CREATE TABLE t3 (a int, b int, c int); +CREATE TABLE t4 (a int, b int, c int); +INSERT INTO t2 VALUES (3,3,0), (4,2,0), (5,3,0); +INSERT INTO t3 VALUES (1,2,0), (2,2,0); +INSERT INTO t4 VALUES (3,2,0), (4,2,0); +set join_cache_level=6; +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 LEFT JOIN (t3, t4) ON t2.b=t4.b +WHERE t3.a+2<t2.a OR t3.c IS NULL; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +set join_cache_level=default; +DROP TABLE t2, t3, t4; +# +# Bug #40192: outer join with where clause when using BNL +# +create table t1 (a int, b int); +insert into t1 values (2, 20), (3, 30), (1, 10); +create table t2 (a int, c int); +insert into t2 values (1, 101), (3, 102), (1, 100); +set join_cache_level=6; +select * from t1 left join t2 on t1.a=t2.a; +a b a c +1 10 1 101 +3 30 3 102 +1 10 1 100 +2 20 NULL NULL +explain select * from t1 left join t2 on t1.a=t2.a where t2.c=102 or t2.c is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.a 3 Using where; Using join buffer (flat, BNLH join) +select * from t1 left join t2 on t1.a=t2.a where t2.c=102 or t2.c is null; +a b a c +3 30 3 102 +2 20 NULL NULL +set join_cache_level=default; +drop table t1, t2; +# +# Bug #40317: outer join with with constant on expression equal to FALSE +# +create table t1 (a int); +insert into t1 values (30), (40), (20); +create table t2 (b int); +insert into t2 values (200), (100); +set join_cache_level=6; +select * from t1 left join t2 on (1=0); +a b +30 NULL +40 NULL +20 NULL +explain select * from t1 left join t2 on (1=0) where a=40; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +select * from t1 left join t2 on (1=0) where a=40; +a b +40 NULL +set join_cache_level=0; +explain select * from t1 left join t2 on (1=0); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +set join_cache_level=default; +drop table t1, t2; +# +# Bug #41204: small buffer with big rec_per_key for ref access +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (0); +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1(a) SELECT a FROM t1; +INSERT INTO t1 VALUES (20000), (10000); +CREATE TABLE t2 (pk int AUTO_INCREMENT PRIMARY KEY, b int, c int, INDEX idx(b)); +INSERT INTO t2(b,c) VALUES (10000, 3), (20000, 7), (20000, 1), (10000, 9), (20000, 5); +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +INSERT INTO t2(b,c) SELECT b,c FROM t2; +ANALYZE TABLE t1,t2; +set join_cache_level=6; +set join_buffer_size=1024; +EXPLAIN SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2050 Using where +1 SIMPLE t2 ref idx idx 5 test.t1.a 640 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b; +AVG(c) +5.0000 +set join_buffer_size=default; +set join_cache_level=default; +DROP TABLE t1, t2; +# +# Bug #41894: big join buffer of level 7 used to join records +# with null values in place of varchar strings +# +CREATE TABLE t1 (a int NOT NULL AUTO_INCREMENT PRIMARY KEY, +b varchar(127) DEFAULT NULL); +INSERT INTO t1(a) VALUES (1); +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +INSERT INTO t1(b) SELECT b FROM t1; +CREATE TABLE t2 (a int NOT NULL PRIMARY KEY, b varchar(127) DEFAULT NULL); +INSERT INTO t2 SELECT * FROM t1; +CREATE TABLE t3 (a int NOT NULL PRIMARY KEY, b varchar(127) DEFAULT NULL); +INSERT INTO t3 SELECT * FROM t1; +set join_cache_level=7; +set join_buffer_size=1024*1024; +EXPLAIN +SELECT COUNT(*) FROM t1,t2,t3 +WHERE t1.a=t2.a AND t2.a=t3.a AND +t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 16384 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT COUNT(*) FROM t1,t2,t3 +WHERE t1.a=t2.a AND t2.a=t3.a AND +t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL; +COUNT(*) +16384 +set join_buffer_size=default; +set join_cache_level=default; +DROP TABLE t1,t2,t3; +# +# Bug #42020: join buffer is used for outer join with fields of +# several outer tables in join buffer +# +CREATE TABLE t1 ( +a bigint NOT NULL, +PRIMARY KEY (a) +); +INSERT INTO t1 VALUES +(2), (1); +CREATE TABLE t2 ( +a bigint NOT NULL, +b bigint NOT NULL, +PRIMARY KEY (a,b) +); +INSERT INTO t2 VALUES +(2,30), (2,40), (2,50), (2,60), (2,70), (2,80), +(1,10), (1, 20), (1,30), (1,40), (1,50); +CREATE TABLE t3 ( +pk bigint NOT NULL AUTO_INCREMENT, +a bigint NOT NULL, +b bigint NOT NULL, +val bigint DEFAULT '0', +PRIMARY KEY (pk), +KEY idx (a,b) +); +INSERT INTO t3(a,b) VALUES +(2,30), (2,40), (2,50), (2,60), (2,70), (2,80), +(4,30), (4,40), (4,50), (4,60), (4,70), (4,80), +(5,30), (5,40), (5,50), (5,60), (5,70), (5,80), +(7,30), (7,40), (7,50), (7,60), (7,70), (7,80); +set join_cache_level=0; +SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val +FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b) +WHERE t1.a=t2.a; +a a a b b val +1 1 NULL 10 NULL NULL +1 1 NULL 20 NULL NULL +1 1 NULL 30 NULL NULL +1 1 NULL 40 NULL NULL +1 1 NULL 50 NULL NULL +2 2 2 30 30 0 +2 2 2 40 40 0 +2 2 2 50 50 0 +2 2 2 60 60 0 +2 2 2 70 70 0 +2 2 2 80 80 0 +set join_cache_level=6; +set join_buffer_size=256; +EXPLAIN +SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val +FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b) +WHERE t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using index +1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a 1 Using index +1 SIMPLE t3 ref idx idx 16 test.t1.a,test.t2.b 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val +FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b) +WHERE t1.a=t2.a; +a a a b b val +1 1 NULL 10 NULL NULL +1 1 NULL 20 NULL NULL +1 1 NULL 30 NULL NULL +1 1 NULL 40 NULL NULL +1 1 NULL 50 NULL NULL +2 2 2 30 30 0 +2 2 2 40 40 0 +2 2 2 50 50 0 +2 2 2 60 60 0 +2 2 2 70 70 0 +2 2 2 80 80 0 +DROP INDEX idx ON t3; +set join_cache_level=2; +EXPLAIN +SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val +FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b) +WHERE t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using index +1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a 1 Using index +1 SIMPLE t3 ALL NULL NULL NULL NULL 24 Using where; Using join buffer (flat, BNL join) +SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val +FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b) +WHERE t1.a=t2.a; +a a a b b val +1 1 NULL 10 NULL NULL +1 1 NULL 20 NULL NULL +1 1 NULL 30 NULL NULL +1 1 NULL 40 NULL NULL +1 1 NULL 50 NULL NULL +2 2 2 30 30 0 +2 2 2 40 40 0 +2 2 2 50 50 0 +2 2 2 60 60 0 +2 2 2 70 70 0 +2 2 2 80 80 0 +set join_buffer_size=default; +set join_cache_level=default; +DROP TABLE t1,t2,t3; +create table t1(f1 int, f2 int); +insert into t1 values (1,1),(2,2),(3,3); +create table t2(f1 int not null, f2 int not null, f3 char(200), key(f1,f2)); +insert into t2 values (1,1, 'qwerty'),(1,2, 'qwerty'),(1,3, 'qwerty'); +insert into t2 values (2,1, 'qwerty'),(2,2, 'qwerty'),(2,3, 'qwerty'), +(2,4, 'qwerty'),(2,5, 'qwerty'); +insert into t2 values (3,1, 'qwerty'),(3,4, 'qwerty'); +insert into t2 values (4,1, 'qwerty'),(4,2, 'qwerty'),(4,3, 'qwerty'), +(4,4, 'qwerty'); +insert into t2 values (1,1, 'qwerty'),(1,2, 'qwerty'),(1,3, 'qwerty'); +insert into t2 values (2,1, 'qwerty'),(2,2, 'qwerty'),(2,3, 'qwerty'), +(2,4, 'qwerty'),(2,5, 'qwerty'); +insert into t2 values (3,1, 'qwerty'),(3,4, 'qwerty'); +insert into t2 values (4,1, 'qwerty'),(4,2, 'qwerty'),(4,3, 'qwerty'), +(4,4, 'qwerty'); +set join_cache_level=5; +select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1; +f1 f2 f3 +1 1 qwerty +2 2 qwerty +1 1 qwerty +2 2 qwerty +explain select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +set join_cache_level=6; +select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1; +f1 f2 f3 +1 1 qwerty +2 2 qwerty +1 1 qwerty +2 2 qwerty +explain select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +set join_cache_level=7; +select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1; +f1 f2 f3 +1 1 qwerty +2 2 qwerty +1 1 qwerty +2 2 qwerty +explain select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +set join_cache_level=8; +select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1; +f1 f2 f3 +1 1 qwerty +2 2 qwerty +1 1 qwerty +2 2 qwerty +explain select t2.f1, t2.f2, t2.f3 from t1,t2 +where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +drop table t1,t2; +set join_cache_level=default; +# +# Bug #42955: join with GROUP BY/ORDER BY and when BKA is enabled +# +create table t1 (d int, id1 int, index idx1 (d, id1)); +insert into t1 values +(3, 20), (2, 40), (3, 10), (1, 10), (3, 20), (1, 40), (2, 30), (3, 30); +create table t2 (id1 int, id2 int, index idx2 (id1)); +insert into t2 values +(20, 100), (30, 400), (20, 400), (30, 200), (10, 300), (10, 200), (40, 100), +(40, 200), (30, 300), (10, 400), (20, 200), (20, 300); +set join_cache_level=6; +explain +select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1 +where t1.d=3 group by t1.id1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index; Using temporary; Using filesort +1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1 +where t1.d=3 group by t1.id1; +id1 sum(t2.id2) +10 900 +20 2000 +30 900 +explain +select t1.id1 from t1 join t2 on t1.id1=t2.id1 +where t1.d=3 and t2.id2 > 200 order by t1.id1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index; Using temporary; Using filesort +1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select t1.id1 from t1 join t2 on t1.id1=t2.id1 +where t1.d=3 and t2.id2 > 200 order by t1.id1; +id1 +10 +10 +20 +20 +20 +20 +30 +30 +set join_cache_level=default; +drop table t1,t2; +# +# Bug #44019: star-like multi-join query executed join_cache_level=6 +# +create table t1 (a int, b int, c int, d int); +create table t2 (b int, e varchar(16), index idx(b)); +create table t3 (d int, f varchar(16), index idx(d)); +create table t4 (c int, g varchar(16), index idx(c)); +insert into t1 values +(5, 50, 500, 5000), (3, 30, 300, 3000), (9, 90, 900, 9000), +(2, 20, 200, 2000), (4, 40, 400, 4000), (8, 80, 800, 800), +(7, 70, 700, 7000); +insert into t2 values +(30, 'bbb'), (10, 'b'), (70, 'bbbbbbb'), (60, 'bbbbbb'), +(31, 'bbb'), (11, 'b'), (71, 'bbbbbbb'), (61, 'bbbbbb'), +(32, 'bbb'), (12, 'b'), (72, 'bbbbbbb'), (62, 'bbbbbb'); +insert into t3 values +(4000, 'dddd'), (3000, 'ddd'), (1000, 'd'), (8000, 'dddddddd'), +(4001, 'dddd'), (3001, 'ddd'), (1001, 'd'), (8001, 'dddddddd'), +(4002, 'dddd'), (3002, 'ddd'), (1002, 'd'), (8002, 'dddddddd'); +insert into t4 values +(200, 'cc'), (600, 'cccccc'), (300, 'ccc'), (500, 'ccccc'), +(201, 'cc'), (601, 'cccccc'), (301, 'ccc'), (501, 'ccccc'), +(202, 'cc'), (602, 'cccccc'), (302, 'ccc'), (502, 'ccccc'); +analyze table t2,t3,t4; +set join_cache_level=1; +explain +select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4 +where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where +1 SIMPLE t2 ref idx idx 5 test.t1.b 1 +1 SIMPLE t3 ref idx idx 5 test.t1.d 1 +1 SIMPLE t4 ref idx idx 5 test.t1.c 1 +select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4 +where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c; +a b c d e f g +3 30 300 3000 bbb ddd ccc +set join_cache_level=6; +explain +select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4 +where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where +1 SIMPLE t2 ref idx idx 5 test.t1.b 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 ref idx idx 5 test.t1.d 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 ref idx idx 5 test.t1.c 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4 +where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c; +a b c d e f g +3 30 300 3000 bbb ddd ccc +set join_cache_level=default; +drop table t1,t2,t3,t4; +# +# Bug #44250: Corruption of linked join buffers when using BKA +# +CREATE TABLE t1 ( +id1 bigint(20) DEFAULT NULL, +id2 bigint(20) DEFAULT NULL, +id3 bigint(20) DEFAULT NULL, +num1 bigint(20) DEFAULT NULL, +num2 int(11) DEFAULT NULL, +num3 bigint(20) DEFAULT NULL +); +CREATE TABLE t2 ( +id3 bigint(20) NOT NULL DEFAULT '0', +id4 bigint(20) DEFAULT NULL, +enum1 enum('Enabled','Disabled','Paused') DEFAULT NULL, +PRIMARY KEY (id3) +); +CREATE TABLE t3 ( +id4 bigint(20) NOT NULL DEFAULT '0', +text1 text, +PRIMARY KEY (id4) +); +CREATE TABLE t4 ( +id2 bigint(20) NOT NULL DEFAULT '0', +dummy int(11) DEFAULT '0', +PRIMARY KEY (id2) +); +CREATE TABLE t5 ( +id1 bigint(20) NOT NULL DEFAULT '0', +id2 bigint(20) NOT NULL DEFAULT '0', +enum2 enum('Active','Deleted','Paused') DEFAULT NULL, +PRIMARY KEY (id1,id2) +); +set join_cache_level=8; +set join_buffer_size=2048; +EXPLAIN +SELECT STRAIGHT_JOIN t1.id1, t1.num3, t3.text1, t3.id4, t2.id3, t4.dummy +FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5 +WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND +t5.enum2='Active' AND t3.id4=t2.id4 AND t2.id3=t1.id3 AND t3.text1<'D'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 349 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.id3 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.id4 1 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 8 test.t1.id2 1 Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 16 test.t1.id1,test.t1.id2 1 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan +SELECT STRAIGHT_JOIN t1.id1, t1.num3, t3.text1, t3.id4, t2.id3, t4.dummy +FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5 +WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND +t5.enum2='Active' AND t3.id4=t2.id4 AND t2.id3=t1.id3 AND t3.text1<'D'; +id1 num3 text1 id4 id3 dummy +228172702 14 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0 +228172702 134 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0 +228172702 15 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0 +228172702 3 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0 +228808822 61 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 13 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 60 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 13 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 6 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 18 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 17 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 50 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0 +228808822 89 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 19 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 9 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 84 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 14 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 10 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 26 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 28 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +228808822 62 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0 +set join_buffer_size=default; +set join_cache_level=default; +DROP TABLE t1,t2,t3,t4,t5; +# +# Bug#45267: Incomplete check caused wrong result. +# +CREATE TABLE t1 ( +`pk` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY +); +CREATE TABLE t3 ( +`pk` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY +); +INSERT INTO t3 VALUES +(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15), +(16),(17),(18),(19),(20); +CREATE TABLE t2 ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_nokey` int(11) NOT NULL, +`time_key` time NOT NULL, +PRIMARY KEY (`pk`), +KEY `time_key` (`time_key`) +); +INSERT INTO t2 VALUES (10,9,'22:36:46'),(11,0,'08:46:46'); +SELECT DISTINCT t1.`pk` +FROM t1 RIGHT JOIN t2 STRAIGHT_JOIN t3 ON t2.`int_nokey` ON t2.`time_key` +GROUP BY 1; +pk +NULL +DROP TABLE IF EXISTS t1, t2, t3; +# +# Bug #46328: Use of aggregate function without GROUP BY clause +# returns many rows (vs. one ) +# +CREATE TABLE t1 ( +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO t1 VALUES +(0),(2),(2),(2),(3),(4),(5),(5),(6),(6),(8),(8),(9),(9); +CREATE TABLE t2 ( +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO t2 VALUES (2),(3); + +# The query shall return 1 record with a max value 9 and one of the +# int_key values inserted above (undefined which one). A changed +# execution plan may change the value in the second column +SELECT MAX(t1.int_key), t1.int_key +FROM t1 STRAIGHT_JOIN t2 +ORDER BY t1.int_key; +MAX(t1.int_key) int_key +9 0 + +explain +SELECT MAX(t1.int_key), t1.int_key +FROM t1 STRAIGHT_JOIN t2 +ORDER BY t1.int_key; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL int_key 4 NULL 14 Using index +1 SIMPLE t2 index NULL int_key 4 NULL 2 Using index; Using join buffer (flat, BNL join) + +DROP TABLE t1,t2; +SET join_cache_level=default; +# +# Regression test for +# Bug#46733 - NULL value not returned for aggregate on empty result +# set w/ semijoin on +# +CREATE TABLE t1 ( +i int(11) NOT NULL, +v varchar(1) DEFAULT NULL, +PRIMARY KEY (i) +); +INSERT INTO t1 VALUES (10,'a'),(11,'b'),(12,'c'),(13,'d'); +CREATE TABLE t2 ( +i int(11) NOT NULL, +v varchar(1) DEFAULT NULL, +PRIMARY KEY (i) +); +INSERT INTO t2 VALUES (1,'x'),(2,'y'); + +SELECT MAX(t1.i) +FROM t1 JOIN t2 ON t2.v +ORDER BY t2.v; +MAX(t1.i) +NULL + +EXPLAIN +SELECT MAX(t1.i) +FROM t1 JOIN t2 ON t2.v +ORDER BY t2.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index; Using join buffer (flat, BNL join) + +DROP TABLE t1,t2; +# +# Bug #45092: join buffer contains two blob columns one of which is +# used in the key employed to access the joined table +# +CREATE TABLE t1 (c1 int, c2 int, key (c2)); +INSERT INTO t1 VALUES (1,1); +INSERT INTO t1 VALUES (2,2); +CREATE TABLE t2 (c1 text, c2 text); +INSERT INTO t2 VALUES('tt', 'uu'); +INSERT INTO t2 VALUES('zzzz', 'xxxxxxxxx'); +ANALYZE TABLE t1,t2; +set join_cache_level=6; +SELECT t1.*, t2.*, LENGTH(t2.c1), LENGTH(t2.c2) FROM t1,t2 +WHERE t1.c2=LENGTH(t2.c2) and t1.c1=LENGTH(t2.c1); +c1 c2 c1 c2 LENGTH(t2.c1) LENGTH(t2.c2) +2 2 tt uu 2 2 +set join_cache_level=default; +DROP TABLE t1,t2; +# +# Bug #51092: linked join buffer is used for a 3-way cross join query +# that selects only records of the first table +# +create table t1 (a int, b int); +insert into t1 values (1,1),(2,2); +create table t2 (a int, b int); +insert into t2 values (1,1),(2,2); +create table t3 (a int, b int); +insert into t3 values (1,1),(2,2); +explain select t1.* from t1,t2,t3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +select t1.* from t1,t2,t3; +a b +1 1 +2 2 +1 1 +2 2 +1 1 +2 2 +1 1 +2 2 +set join_cache_level=2; +explain select t1.* from t1,t2,t3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) +select t1.* from t1,t2,t3; +a b +1 1 +2 2 +1 1 +2 2 +1 1 +2 2 +1 1 +2 2 +set join_cache_level=default; +drop table t1,t2,t3; +# +# Bug #52394: using join buffer for 3 table join with ref access +# LP #623209: and no references to the columns of the middle table +# +set join_cache_level=6; +CREATE TABLE t1 (a int(11), b varchar(1)); +INSERT INTO t1 VALUES (6,'r'),(27,'o'); +CREATE TABLE t2(a int); +INSERT INTO t2 VALUES(1),(2),(3),(4),(5); +CREATE TABLE t3 (a int(11) primary key, b varchar(1)); +INSERT INTO t3 VALUES +(14,'d'),(15,'z'),(16,'e'),(17,'h'),(18,'b'),(19,'s'),(20,'e'), +(21,'j'),(22,'e'),(23,'f'),(24,'v'),(25,'x'),(26,'m'),(27,'o'); +EXPLAIN +SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using join buffer (flat, BNL join) +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b; +a +27 +27 +27 +27 +27 +DROP TABLE t1,t2,t3; +set join_cache_level=default; +# +# Bug #51084: Batched key access crashes for SELECT with +# derived table and LEFT JOIN +# +CREATE TABLE t1 ( +carrier int, +id int PRIMARY KEY +); +INSERT INTO t1 VALUES (1,11),(1,12),(2,13); +CREATE TABLE t2 ( +scan_date int, +package_id int +); +INSERT INTO t2 VALUES (2008,21),(2008,22); +CREATE TABLE t3 ( +carrier int PRIMARY KEY, +id int +); +INSERT INTO t3 VALUES (1,31); +CREATE TABLE t4 ( +carrier_id int, +INDEX carrier_id(carrier_id) +); +INSERT INTO t4 VALUES (31),(32); +SET join_cache_level=8; +SELECT COUNT(*) +FROM (t2 JOIN t1) LEFT JOIN (t3 JOIN t4 ON t3.id = t4.carrier_id) +ON t3.carrier = t1.carrier; +COUNT(*) +6 +EXPLAIN +SELECT COUNT(*) +FROM (t2 JOIN t1) LEFT JOIN (t3 JOIN t4 ON t3.id = t4.carrier_id) +ON t3.carrier = t1.carrier; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.carrier 1 Using where +1 SIMPLE t4 ref carrier_id carrier_id 5 test.t3.id 2 Using index +SET join_cache_level=default; +DROP TABLE t1,t2,t3,t4; +# +# Bug #52636: allowing JOINs on NULL values w/ join_cache_level = 5-8 +# +CREATE TABLE t1 (b int); +INSERT INTO t1 VALUES (NULL),(3); +CREATE TABLE t2 (a int, b int, KEY (b)); +INSERT INTO t2 VALUES (100,NULL),(150,200); +set join_cache_level = 5; +explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +a +NULL +NULL +set join_cache_level = 8; +explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +a +NULL +NULL +delete from t1; +INSERT INTO t1 VALUES (NULL),(NULL); +set join_cache_level = 5; +explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +a +NULL +NULL +DROP TABLE t1,t2; +CREATE TABLE t1 (b varchar(100)); +INSERT INTO t1 VALUES (NULL),("some varchar"); +CREATE TABLE t2 (a int, b varchar(100), KEY (b)); +INSERT INTO t2 VALUES (100,NULL),(150,"varchar"),(200,NULL),(250,"long long varchar"); +set join_cache_level = 5; +explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +a +NULL +NULL +set join_cache_level = 8; +explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b; +a +NULL +NULL +set join_cache_level = default; +DROP TABLE t1,t2; +# +# Bug #54359: Extra rows with join_cache_level=7,8 and two joins +# and multi-column index" +# +CREATE TABLE t1 ( +pk int NOT NULL, +a int DEFAULT NULL, +b varchar(16) DEFAULT NULL, +c varchar(16) DEFAULT NULL, +INDEX idx (b,a)) +; +INSERT INTO t1 VALUES (4,9,'k','k'); +INSERT INTO t1 VALUES (12,5,'k','k'); +set join_cache_level = 8; +EXPLAIN +SELECT t.a FROM t1 t, t1 s FORCE INDEX(idx) +WHERE s.pk AND s.a >= t.pk AND s.b = t.c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE s ref idx idx 19 test.t.c 1 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan +SELECT t.a FROM t1 t, t1 s FORCE INDEX(idx) +WHERE s.pk AND s.a >= t.pk AND s.b = t.c; +a +9 +9 +set join_cache_level = default; +DROP TABLE t1; +# +# Bug #54235: Extra rows with join_cache_level=6,8 and two LEFT JOINs +# +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int); +CREATE TABLE t3 (a int); +CREATE TABLE t4 (a int); +INSERT INTO t1 VALUES (null), (2), (null), (1); +set join_cache_level = 6; +EXPLAIN +SELECT t1.a +FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.a) ON 0 +WHERE t1.a OR t3.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +1 SIMPLE t2 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (incremental, BNL join) +SELECT t1.a +FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.a) ON 0 +WHERE t1.a OR t3.a; +a +2 +1 +EXPLAIN +SELECT t1.a +FROM t1 LEFT JOIN (t2 LEFT JOIN (t3 LEFT JOIN t4 ON 1) ON t2.a) ON 0 +WHERE t1.a OR t4.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +1 SIMPLE t2 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (incremental, BNL join) +SELECT t1.a +FROM t1 LEFT JOIN (t2 LEFT JOIN (t3 LEFT JOIN t4 ON 1) ON t2.a) ON 0 +WHERE t1.a OR t4.a; +a +2 +1 +set join_cache_level = default; +DROP TABLE t1,t2,t3,t4; +# +# Bug #663840: Memory overwrite causing crash with hash join +# +SET SESSION join_cache_level=3; +SET SESSION join_buffer_size=100; +Warnings: +Warning 1292 Truncated incorrect join_buffer_size value: '100' +CREATE TABLE t3 ( +i int NOT NULL, +j int NOT NULL, +d date NOT NULL, +t time NOT NULL, +v varchar(1) NOT NULL, +u varchar(1) NOT NULL, +INDEX idx (v) +) COLLATE=latin1_bin; +INSERT INTO t3 VALUES +(3,8,'2008-12-04','00:00:00','v','v'), (3,8,'2009-03-28','00:00:00','f','f'), +(3,5,'1900-01-01','00:55:47','v','v'), (2,8,'2009-10-02','00:00:00','s','s'), +(1,8,'1900-01-01','20:51:59','a','a'), (0,6,'2008-06-04','09:47:27','p','p'), +(8,7,'2009-01-13','21:58:29','z','z'), (5,2,'1900-01-01','22:45:53','a','a'), +(9,5,'2008-01-28','14:06:48','h','h'), (5,7,'2004-09-18','22:17:16','h','h'), +(4,2,'2006-10-14','14:59:37','v','v'), (2,9,'1900-01-01','23:37:40','v','v'), +(33,142,'2000-11-28','14:14:01','b','b'), (5,3,'2008-04-04','02:54:19','y','y'), +(1,0,'2002-07-13','06:34:26','v','v'), (9,3,'2003-01-03','18:07:38','m','m'), +(1,5,'2006-04-02','13:55:23','z','z'), (3,9,'2006-10-19','20:32:28','n','n'), +(8,1,'2005-06-08','11:57:44','d','d'), (231,107,'2006-12-26','03:10:35','a','a'); +CREATE TABLE t1 SELECT * FROM t3; +DELETE FROM t1 WHERE i > 8; +CREATE TABLE t2 SELECT * FROM t3; +DELETE FROM t2 WHERE j > 10; +EXPLAIN +SELECT t1.i, t1.d, t1.v, t2.i, t2.d, t2.t, t2.v FROM t1,t2,t3 +WHERE t3.u <='a' AND t2.j < 5 AND t3.v = t2.u; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 16 +1 SIMPLE t2 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 hash_ALL idx #hash#idx 3 test.t2.u 20 Using where; Using join buffer (flat, BNLH join) +SELECT t1.i, t1.d, t1.v, t2.i, t2.d, t2.t, t2.v FROM t1,t2,t3 +WHERE t3.u <='a' AND t2.j < 5 AND t3.v = t2.u; +i d v i d t v +0 2008-06-04 p 5 1900-01-01 22:45:53 a +0 2008-06-04 p 5 1900-01-01 22:45:53 a +0 2008-06-04 p 5 1900-01-01 22:45:53 a +1 1900-01-01 a 5 1900-01-01 22:45:53 a +1 1900-01-01 a 5 1900-01-01 22:45:53 a +1 1900-01-01 a 5 1900-01-01 22:45:53 a +1 2002-07-13 v 5 1900-01-01 22:45:53 a +1 2002-07-13 v 5 1900-01-01 22:45:53 a +1 2002-07-13 v 5 1900-01-01 22:45:53 a +1 2006-04-02 z 5 1900-01-01 22:45:53 a +1 2006-04-02 z 5 1900-01-01 22:45:53 a +1 2006-04-02 z 5 1900-01-01 22:45:53 a +2 1900-01-01 v 5 1900-01-01 22:45:53 a +2 1900-01-01 v 5 1900-01-01 22:45:53 a +2 1900-01-01 v 5 1900-01-01 22:45:53 a +2 2009-10-02 s 5 1900-01-01 22:45:53 a +2 2009-10-02 s 5 1900-01-01 22:45:53 a +2 2009-10-02 s 5 1900-01-01 22:45:53 a +3 1900-01-01 v 5 1900-01-01 22:45:53 a +3 1900-01-01 v 5 1900-01-01 22:45:53 a +3 1900-01-01 v 5 1900-01-01 22:45:53 a +3 2006-10-19 n 5 1900-01-01 22:45:53 a +3 2006-10-19 n 5 1900-01-01 22:45:53 a +3 2006-10-19 n 5 1900-01-01 22:45:53 a +3 2008-12-04 v 5 1900-01-01 22:45:53 a +3 2008-12-04 v 5 1900-01-01 22:45:53 a +3 2008-12-04 v 5 1900-01-01 22:45:53 a +3 2009-03-28 f 5 1900-01-01 22:45:53 a +3 2009-03-28 f 5 1900-01-01 22:45:53 a +3 2009-03-28 f 5 1900-01-01 22:45:53 a +4 2006-10-14 v 5 1900-01-01 22:45:53 a +4 2006-10-14 v 5 1900-01-01 22:45:53 a +4 2006-10-14 v 5 1900-01-01 22:45:53 a +5 1900-01-01 a 5 1900-01-01 22:45:53 a +5 1900-01-01 a 5 1900-01-01 22:45:53 a +5 1900-01-01 a 5 1900-01-01 22:45:53 a +5 2004-09-18 h 5 1900-01-01 22:45:53 a +5 2004-09-18 h 5 1900-01-01 22:45:53 a +5 2004-09-18 h 5 1900-01-01 22:45:53 a +5 2008-04-04 y 5 1900-01-01 22:45:53 a +5 2008-04-04 y 5 1900-01-01 22:45:53 a +5 2008-04-04 y 5 1900-01-01 22:45:53 a +8 2005-06-08 d 5 1900-01-01 22:45:53 a +8 2005-06-08 d 5 1900-01-01 22:45:53 a +8 2005-06-08 d 5 1900-01-01 22:45:53 a +8 2009-01-13 z 5 1900-01-01 22:45:53 a +8 2009-01-13 z 5 1900-01-01 22:45:53 a +8 2009-01-13 z 5 1900-01-01 22:45:53 a +DROP TABLE t1,t2,t3; +SET SESSION join_cache_level=DEFAULT; +SET SESSION join_buffer_size=DEFAULT; +# +# Bug #664508: 'Simple' GROUP BY + ORDER BY +# when join buffers are used +# +CREATE TABLE t1 ( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2 (v,i) +) COLLATE latin1_bin; +INSERT INTO t1 VALUES +(10,8,'v'), (11,8,'f'), (12,5,'v'), (13,8,'s'), (14,8,'a'), +(15,6,'p'), (16,7,'z'), (17,2,'a'), (18,5,'h'), (19,7,'h'), +(25,3,'m'), (26,5,'z'), (27,9,'n'), (28,1,'d'), (29,107,'a'); +CREATE TABLE t2 ( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2(v,i) +) COLLATE latin1_bin; +INSERT INTO t2 VALUES +(10,8,'v'), (11,8,'f'), (12,5,'v'), (13,8,'s'), (14,8,'a'), +(15,6,'p'), (16,7,'z'), (17,2,'a'), (18,5,'h'), (19,7,'h'), +(20,2,'v'), (21,9,'v'), (22,142,'b'), (23,3,'y'), (24,0,'v'), +(25,3,'m'), (26,5,'z'), (27,9,'n'), (28,1,'d'), (29,107,'a'); +CREATE TABLE t3 ( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2(v,i) +) COLLATE latin1_bin; +INSERT INTO t3 VALUES +(1,9,'x'), (2,5,'g'), (3,1,'o'), (4,0,'g'), (5,1,'v'), +(6,190,'m'), (7,6,'x'), (8,3,'c'), (9,4,'z'), (10,3,'i'), +(11,186,'x'), (12,1,'g'), (13,8,'q'), (14,226,'m'), (15,133,'p'), +(16,6,'e'), (17,3,'t'), (18,8,'j'), (19,5,'h'), (20,7,'w'); +SET SESSION join_cache_level=1; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index idx1 idx2 7 NULL 20 Using index; Using temporary; Using filesort +1 SIMPLE t3 eq_ref PRIMARY,idx2 PRIMARY 4 test.t2.i 1 Using where +1 SIMPLE t1 ref idx2 idx2 3 test.t3.v 2 +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +v +h +z +p +n +v +SET SESSION join_cache_level=6; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL idx1 NULL NULL NULL 20 Using temporary; Using filesort +1 SIMPLE t3 eq_ref PRIMARY,idx2 PRIMARY 4 test.t2.i 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t1 ref idx2 idx2 3 test.t3.v 2 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +v +h +z +n +v +p +SET SESSION join_cache_level=4; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL idx1 NULL NULL NULL 20 Using temporary; Using filesort +1 SIMPLE t3 hash_ALL PRIMARY,idx2 #hash#PRIMARY 4 test.t2.i 20 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t1 hash_ALL idx2 #hash#idx2 3 test.t3.v 15 Using join buffer (incremental, BNLH join) +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v +GROUP BY t2.v ORDER BY t1.pk,t2.v; +v +h +z +n +v +p +DROP TABLE t1,t2,t3; +SET SESSION join_cache_level=DEFAULT; +# +# Bug #668290: hash join with non-binary collations +# +CREATE TABLE t1 ( +i int DEFAULT NULL, +cl varchar(10) CHARACTER SET latin1 DEFAULT NULL, +cu varchar(10) CHARACTER SET utf8 DEFAULT NULL, +INDEX cl (cl), +INDEX cu (cu) +); +INSERT INTO t1 VALUES +(650903552,'cmxffkpsel','z'), (535298048,'tvtjrcmxff','y'), +(1626865664,'when','for'), (39649280,'rcvljitvtj','ercvljitvt'), +(792068096,'ttercvljit','jttercvlji'); +INSERT INTO t1 SELECT * FROM t1; +CREATE TABLE t2 ( +cu varchar(10) CHARACTER SET utf8 DEFAULT NULL, +i int DEFAULT NULL, +cl varchar(10) CHARACTER SET latin1 DEFAULT NULL, +INDEX cu (cu), +INDEX cl (cl) +); +INSERT INTO t2 VALUES +('g',7,'like'), ('fujttercvl',6,'y'), +('s',2,'e'), ('didn\'t',0,'v'), + ('gvdrodpedk',8,'chogvdrodp'), ('jichogvdro',7,'will'); +EXPLAIN +SELECT t2.i FROM t1,t2 WHERE t1.cu = t2.cl ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 +1 SIMPLE t1 ref cu cu 33 func 2 Using where; Using index +SELECT t2.i FROM t1,t2 WHERE t1.cu = t2.cl ; +i +6 +6 +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT t2.i FROM t1,t2 WHERE t1.cu = t2.cl ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 +1 SIMPLE t1 hash_index cu #hash#cu:cu 33:33 func 10 Using where; Using join buffer (flat, BNLH join) +SELECT t2.i FROM t1,t2 WHERE t1.cu = t2.cl ; +i +6 +6 +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #669382: hash join using a ref with constant key parts +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES +(9), (11), (7), (8), (4), (1), (12), (3), (5); +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +CREATE TABLE t2 (a int, b int, c int, INDEX idx (a,b)); +INSERT INTO t2 VALUES +(8, 80, 800), (1, 10, 100), (1, 11, 101), (3, 30, 300), +(1, 12, 102), (8, 81, 801), (7, 70, 700), (12, 120, 1200), +(8, 82, 802), (1, 13, 103), (1, 14, 104), (3, 31, 301), +(1, 15, 105), (8, 83, 803), (7, 71, 701); +SET SESSION join_cache_level = 4; +SET SESSION join_buffer_size = 192; +EXPLAIN +SELECT t1.a, t2.c FROM t1,t2 WHERE t1.a=t2.a AND t2.b=99; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 36 Using where +1 SIMPLE t2 hash_ALL idx #hash#idx 10 test.t1.a,const 15 Using join buffer (flat, BNLH join) +SELECT t1.a, t2.c FROM t1,t2 WHERE t1.a=t2.a AND t2.b=99; +a c +SET SESSION join_cache_level = DEFAULT; +SET SESSION join_buffer_size = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #671901: hash join using a ref to a varchar field +# +CREATE TABLE t1 ( +v varchar(10) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL, +i int DEFAULT NULL +); +INSERT INTO t1 VALUES +('k',8), ('abcdefjh',-575340544), ('f',77), ('because', 2), ('f',-517472256), +('abcdefjhj',5), ('z',7); +CREATE TABLE t2 ( +v varchar(10) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL, +i int DEFAULT NULL, +INDEX idx (v) +); +INSERT INTO t2 VALUES +('did',5), ('was',-1631322112), ('are',3), ('abcdefjhjk',3), +('abcdefjhjk',4), ('tell',-824573952), ('t',0),('v',-1711013888), +('abcdefjhjk',1015414784), ('or',4), ('now',0), ('abcdefjhjk',-32702464), +('abcdefjhjk',4), ('time',1078394880), ('f',4), ('m',-1845559296), +('ff', 5), ('abcdefjhjk',-1074397184); +EXPLAIN +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = t1.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where +1 SIMPLE t2 ref idx idx 13 test.t1.v 2 +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = t1.v; +v i +f 4 +f 4 +EXPLAIN +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = concat(t1.v, t1.v); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 +1 SIMPLE t2 ref idx idx 13 func 2 Using index condition +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = concat(t1.v, t1.v); +v i +f 5 +f 5 +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = t1.v; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where +1 SIMPLE t2 hash_ALL idx #hash#idx 13 test.t1.v 18 Using join buffer (flat, BNLH join) +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = t1.v; +v i +f 4 +f 4 +EXPLAIN +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = concat(t1.v, t1.v); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 +1 SIMPLE t2 hash_ALL idx #hash#idx 13 func 18 Using where; Using join buffer (flat, BNLH join) +SELECT t1.v,t2.i FROM t1,t2 WHERE t2.v = concat(t1.v, t1.v); +v i +f 5 +f 5 +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# Bug #672497: 3 way join with tiny incremental join buffer with +# and a ref access from the first table +# +CREATE TABLE t1 ( +pk int PRIMARY KEY, +v varchar(10) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL, +INDEX idx (v) +); +INSERT INTO t1 VALUES +(1,'abcdefjhjk'), (2,'i'),(3,'abcdefjhjk'), (4,'well'), (5,'abcdefjhjk'), +(6,'abcdefjhjk'), (7,'that'); +CREATE TABLE t2 ( +pk int PRIMARY KEY, +i int DEFAULT NULL, +v varchar(1000) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL, +INDEX idx (v) +); +INSERT INTO t2 VALUES +(1,6,'yes'), (2,NULL,'will'), (3,NULL,'o'), (4,NULL,'k'), (5,NULL,'she'), +(6,-1450835968,'abcdefjhjkl'), (7,-975831040,'abcdefjhjkl'), (8,NULL,'z'), +(10,-343932928,'t'), +(11,6,'yes'), (12,NULL,'will'), (13,NULL,'o'), (14,NULL,'k'), (15,NULL,'she'), +(16,-1450835968,'abcdefjhjkl'), (17,-975831040,'abcdefjhjkl'), (18,NULL,'z'), +(19,-343932928,'t'); +CREATE TABLE t3 ( +pk int NOT NULL PRIMARY KEY, +i int, +v varchar(1024) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL, +INDEX idx (v(333)) +); +INSERT INTO t3 VALUES +(1,7,'abcdefjhjkl'),(2,6,'y'), (3,NULL,'to'),(4,7,'n'),(5,7,'look'), (6,NULL,'all'), +(7,1443168256,'c'), (8,1427046400,'right'), +(11,7,'abcdefjhjkl'), (12,6,'y'), (13,NULL,'to'), (14,7,'n'), (15,7,'look'), +(16,NULL,'all'), (17,1443168256,'c'), (18,1427046400,'right'), +(21,7,'abcdefjhjkl'), (22,6,'y'), (23,NULL,'to'), (24,7,'n'), (25,7,'look'), +(26,NULL,'all'), (27,1443168256,'c'), (28,1427046400,'right'), +(31,7,'abcdefjhjkl'), (32,6,'y'), (33,NULL,'to'), (34,7,'n'), (35,7,'look'), +(36,NULL,'all'), (37,1443168256,'c'), (38,1427046400,'right'); +SET SESSION join_buffer_size = 192; +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT t3.i FROM t1,t2,t3 +WHERE t1.v = t2.v AND t3.v = t1.v AND t2.i <> 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index idx idx 13 NULL 7 Using where; Using index +1 SIMPLE t2 hash_ALL idx #hash#idx 1003 test.t1.v 18 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t3 hash_ALL idx #hash#idx 1002 func 32 Using where; Using join buffer (incremental, BNLH join) +SELECT t3.i FROM t1,t2,t3 +WHERE t1.v = t2.v AND t3.v = t1.v AND t2.i <> 0; +i +SET SESSION join_cache_level = DEFAULT; +SET SESSION join_buffer_size = DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #672551: hash join over a long varchar field +# +CREATE TABLE t1 ( +pk int PRIMARY KEY, +a varchar(512) CHARSET latin1 COLLATE latin1_bin DEFAULT NULL, +INDEX idx (a) +); +INSERT INTO t1 VALUES (2, 'aa'), (5, 'ccccccc'), (3, 'bb'); +CREATE TABLE t2( +pk int PRIMARY KEY, +a varchar(512) CHARSET latin1 COLLATE latin1_bin DEFAULT NULL, +INDEX idx (a) +); +INSERT INTO t2 VALUES +(10, 'a'), (20, 'c'), (30, 'aa'), (4, 'bb'), +(11, 'a'), (21, 'c'), (31, 'aa'), (41, 'cc'), +(12, 'a'), (22, 'c'), (32, 'bb'), (42, 'aa'); +SELECT * FROM t1,t2 WHERE t2.a=t1.a; +pk a pk a +2 aa 30 aa +2 aa 31 aa +2 aa 42 aa +3 bb 4 bb +3 bb 32 bb +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT * FROM t1,t2 WHERE t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 Using where +1 SIMPLE t2 hash_ALL idx #hash#idx 515 test.t1.a 12 Using join buffer (flat, BNLH join) +SELECT * FROM t1,t2 WHERE t2.a=t1.a; +pk a pk a +2 aa 30 aa +3 bb 4 bb +2 aa 31 aa +3 bb 32 bb +2 aa 42 aa +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #674431: nested outer join when join_cache_level is set to 7 +# +CREATE TABLE t1 (a int, b varchar(32)) ; +INSERT INTO t1 VALUES (5,'h'), (NULL,'j'); +CREATE TABLE t2 (a int, b varchar(32), c int) ; +INSERT INTO t2 VALUES (5,'h',100), (NULL,'j',200); +CREATE TABLE t3 (a int, b varchar(32), INDEX idx(b)); +INSERT INTO t3 VALUES (77,'h'), (88,'g'); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 7; +SELECT t3.a +FROM t1 LEFT JOIN +(t2 LEFT OUTER JOIN t3 ON t2.b = t3.b) ON t2.a = t1.b +WHERE t3.a BETWEEN 3 AND 11 OR t1.a <= t2.c; +a +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #52540: nested outer join when join_cache_level is set to 3 +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2); +CREATE TABLE t2 (a varchar(10)); +INSERT INTO t2 VALUES ('f'),('x'); +CREATE TABLE t3 (pk int(11) PRIMARY KEY); +INSERT INTO t3 VALUES (2); +CREATE TABLE t4 (a varchar(10)); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 3; +SELECT * +FROM t2 LEFT JOIN +((t1 JOIN t3 ON t1.a = t3.pk) LEFT JOIN t4 ON 1) ON 1; +a a pk a +f 2 2 NULL +x 2 2 NULL +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3,t4; +# +# Bug #674423: outer join with ON expression over only outer tables +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES ('9'); +CREATE TABLE t2 (pk int, a int) ; +INSERT INTO t2 VALUES ('9',NULL), ('1',NULL); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 0; +EXPLAIN +SELECT * FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t1.a <> 0 OR t2.pk < 9; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t1 ALL NULL NULL NULL NULL 1 Using where +SELECT * FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t1.a <>0 OR t2.pk < 9; +pk a a +1 NULL NULL +SET SESSION join_cache_level = 1; +EXPLAIN +SELECT * FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t1.a <> 0 OR t2.pk < 9; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t1 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +SELECT * FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t1.a <> 0 OR t2.pk < 9; +pk a a +1 NULL NULL +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #675095: nested outer join using join buffer +# +CREATE TABLE t1 (pk int, a1 int) ; +INSERT IGNORE INTO t1 VALUES (2,NULL), (8,0); +CREATE TABLE t2 (pk int, a2 int, c2 int, d2 int) ; +INSERT IGNORE INTO t2 VALUES (9,0,0,2), (1,0,0,7); +CREATE TABLE t3 (pk int, a3 int, c3 int, d3 int) ; +INSERT IGNORE INTO t3 VALUES (9,0,0,2), (1,0,0,7); +CREATE TABLE t4 (pk int, a4 int, INDEX idx(a4)) ; +INSERT IGNORE INTO t4 VALUES (2,NULL), (8,0); +CREATE TABLE t5 (pk int, a5 int) ; +INSERT IGNORE INTO t5 VALUES (2,0), (8,0); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 0; +EXPLAIN EXTENDED +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t4 ref idx idx 5 test.t1.a1 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`a1` AS `a1`,`test`.`t2`.`pk` AS `pk`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`c2` AS `c2`,`test`.`t2`.`d2` AS `d2`,`test`.`t3`.`pk` AS `pk`,`test`.`t3`.`a3` AS `a3`,`test`.`t3`.`c3` AS `c3`,`test`.`t3`.`d3` AS `d3`,`test`.`t4`.`pk` AS `pk`,`test`.`t4`.`a4` AS `a4`,`test`.`t5`.`pk` AS `pk`,`test`.`t5`.`a5` AS `a5` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(((`test`.`t2`.`d2` = `test`.`t1`.`pk`) and (`test`.`t3`.`a3` = `test`.`t2`.`c2`))) left join `test`.`t4` on(((`test`.`t4`.`a4` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` is not null))) left join `test`.`t5` on((`test`.`t5`.`a5` = `test`.`t3`.`a3`)) where 1 +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +pk a1 pk a2 c2 d2 pk a3 c3 d3 pk a4 pk a5 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 2 0 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 8 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 2 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 8 0 +8 0 NULL NULL NULL NULL NULL NULL NULL NULL 8 0 NULL NULL +SET SESSION join_cache_level = 2; +EXPLAIN EXTENDED +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 ref idx idx 5 test.t1.a1 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`a1` AS `a1`,`test`.`t2`.`pk` AS `pk`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`c2` AS `c2`,`test`.`t2`.`d2` AS `d2`,`test`.`t3`.`pk` AS `pk`,`test`.`t3`.`a3` AS `a3`,`test`.`t3`.`c3` AS `c3`,`test`.`t3`.`d3` AS `d3`,`test`.`t4`.`pk` AS `pk`,`test`.`t4`.`a4` AS `a4`,`test`.`t5`.`pk` AS `pk`,`test`.`t5`.`a5` AS `a5` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(((`test`.`t2`.`d2` = `test`.`t1`.`pk`) and (`test`.`t3`.`a3` = `test`.`t2`.`c2`))) left join `test`.`t4` on(((`test`.`t4`.`a4` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` is not null))) left join `test`.`t5` on((`test`.`t5`.`a5` = `test`.`t3`.`a3`)) where 1 +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +pk a1 pk a2 c2 d2 pk a3 c3 d3 pk a4 pk a5 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 2 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 2 0 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 8 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 8 0 +8 0 NULL NULL NULL NULL NULL NULL NULL NULL 8 0 NULL NULL +SET SESSION join_cache_level = 1; +EXPLAIN EXTENDED +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t4 ref idx idx 5 test.t1.a1 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`a1` AS `a1`,`test`.`t2`.`pk` AS `pk`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`c2` AS `c2`,`test`.`t2`.`d2` AS `d2`,`test`.`t3`.`pk` AS `pk`,`test`.`t3`.`a3` AS `a3`,`test`.`t3`.`c3` AS `c3`,`test`.`t3`.`d3` AS `d3`,`test`.`t4`.`pk` AS `pk`,`test`.`t4`.`a4` AS `a4`,`test`.`t5`.`pk` AS `pk`,`test`.`t5`.`a5` AS `a5` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(((`test`.`t2`.`d2` = `test`.`t1`.`pk`) and (`test`.`t3`.`a3` = `test`.`t2`.`c2`))) left join `test`.`t4` on(((`test`.`t4`.`a4` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` is not null))) left join `test`.`t5` on((`test`.`t5`.`a5` = `test`.`t3`.`a3`)) where 1 +SELECT * +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.c2 = t3.a3) ON t1.pk = t2.d2) +LEFT JOIN t4 ON t1.a1 = t4.a4) LEFT JOIN t5 ON t3.a3 = t5.a5; +pk a1 pk a2 c2 d2 pk a3 c3 d3 pk a4 pk a5 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 2 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 2 0 +2 NULL 9 0 0 2 9 0 0 2 NULL NULL 8 0 +2 NULL 9 0 0 2 1 0 0 7 NULL NULL 8 0 +8 0 NULL NULL NULL NULL NULL NULL NULL NULL 8 0 NULL NULL +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3,t4,t5; +# +# Bug #675516: nested outer join with 3 tables in the nest +# using BNL + BNLH +# +CREATE TABLE t1 (a1 int, b1 int, c1 int) ; +INSERT INTO t1 VALUES (7,8,0), (6,4,0); +CREATE TABLE t2 (a2 int) ; +INSERT INTO t2 VALUES (5); +CREATE TABLE t3 (a3 int, b3 int, c3 int, PRIMARY KEY (b3)) ; +INSERT INTO t3 VALUES (2,5,0); +CREATE TABLE t4 (a4 int, b4 int, c4 int) ; +INSERT INTO t4 VALUES (7,8,0); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT * FROM +t1 LEFT JOIN +((t2 JOIN t3 ON t2.a2 = t3.b3) JOIN t4 ON t4.b4 <> 0) ON t1.c1 = t3.c3 +WHERE t3.a3 IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t3 hash_ALL PRIMARY #hash#$hj 5 test.t1.c1 1 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t3.b3 1 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join) +SELECT * FROM +t1 LEFT JOIN +((t2 JOIN t3 ON t2.a2 = t3.b3) JOIN t4 ON t4.b4 <> 0) ON t1.c1 = t3.c3 +WHERE t3.a3 IS NULL; +a1 b1 c1 a2 a3 b3 c3 a4 b4 c4 +SET SESSION join_cache_level = 0; +EXPLAIN +SELECT * FROM +t1 LEFT JOIN +((t2 JOIN t3 ON t2.a2 = t3.b3) JOIN t4 ON t4.b4 <> 0) ON t1.c1 = t3.c3 +WHERE t3.a3 IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where +SELECT * FROM +t1 LEFT JOIN +((t2 JOIN t3 ON t2.a2 = t3.b3) JOIN t4 ON t4.b4 <> 0) ON t1.c1 = t3.c3 +WHERE t3.a3 IS NULL; +a1 b1 c1 a2 a3 b3 c3 a4 b4 c4 +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3,t4; +# +# Bug #660963: nested outer join with join_cache_level set to 5 +# +CREATE TABLE t1 (a1 int) ; +INSERT INTO t1 VALUES (0),(0); +CREATE TABLE t2 (a2 int, b2 int, PRIMARY KEY (a2)) ; +INSERT INTO t2 VALUES (2,1); +CREATE TABLE t3 (a3 int, b3 int, PRIMARY KEY (a3)) ; +INSERT INTO t3 VALUES (2,1); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 6; +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0; +a1 a2 b2 a3 b3 +0 2 1 2 1 +0 2 1 2 1 +SET SESSION join_cache_level = 5; +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BNLH join) +SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0; +a1 a2 b2 a3 b3 +0 2 1 2 1 +0 2 1 2 1 +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #675922: incremental buffer for BKA with access from previous +# buffers from non-nullable columns whose values may be null +# +CREATE TABLE t1 (a1 varchar(32)) ; +INSERT INTO t1 VALUES ('s'),('k'); +CREATE TABLE t2 (a2 int PRIMARY KEY, b2 varchar(32)) ; +INSERT INTO t2 VALUES (7,'s'); +CREATE TABLE t3 (a3 int PRIMARY KEY, b3 varchar(32)) ; +INSERT INTO t3 VALUES (7,'s'); +CREATE TABLE t4 (a4 int) ; +INSERT INTO t4 VALUES (9); +CREATE TABLE t5(a5 int PRIMARY KEY, b5 int) ; +INSERT INTO t5 VALUES (7,0); +SET SESSION optimizer_switch = 'outer_join_with_cache=on'; +SET SESSION join_cache_level = 0; +EXPLAIN +SELECT t4.a4, t5.b5 +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.a2 = t3.a3) ON t2.b2 = t1.a1) +LEFT JOIN t4 ON t4.a4 <> 0) LEFT JOIN t5 ON t5.a5 = t2.a2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using index +1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where +SELECT t4.a4, t5.b5 +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.a2 = t3.a3) ON t2.b2 = t1.a1) +LEFT JOIN t4 ON t4.a4 <> 0) LEFT JOIN t5 ON t5.a5 = t2.a2; +a4 b5 +9 0 +9 NULL +SET SESSION join_cache_level = 6; +EXPLAIN +SELECT t4.a4, t5.b5 +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.a2 = t3.a3) ON t2.b2 = t1.a1) +LEFT JOIN t4 ON t4.a4 <> 0) LEFT JOIN t5 ON t5.a5 = t2.a2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using index +1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t4.a4, t5.b5 +FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.a2 = t3.a3) ON t2.b2 = t1.a1) +LEFT JOIN t4 ON t4.a4 <> 0) LEFT JOIN t5 ON t5.a5 = t2.a2; +a4 b5 +9 0 +9 NULL +SET SESSION optimizer_switch = 'outer_join_with_cache=off'; +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2,t3,t4,t5; +# +# Bug #670380: hash join for non-binary collation +# +CREATE TABLE t1 (pk int PRIMARY KEY, a varchar(32)); +CREATE TABLE t2 (pk int PRIMARY KEY, a varchar(32), INDEX idx(a)); +INSERT INTO t1 VALUES +(10,'AAA'), (20,'BBBB'), (30,'Cc'), (40,'DD'), (50,'ee'); +INSERT INTO t2 VALUES +(1,'Bbbb'), (2,'BBB'), (3,'bbbb'), (4,'AaA'), (5,'CC'), +(6,'cC'), (7,'CCC'), (8,'AAA'), (9,'bBbB'), (10,'aaaa'), +(11,'a'), (12,'dd'), (13,'EE'), (14,'ee'), (15,'D'); +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT * FROM t1,t2 WHERE t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where +1 SIMPLE t2 hash_ALL idx #hash#idx 35 test.t1.a 15 Using join buffer (flat, BNLH join) +SELECT * FROM t1,t2 WHERE t1.a=t2.a; +pk a pk a +20 BBBB 1 Bbbb +20 BBBB 3 bbbb +10 AAA 4 AaA +30 Cc 5 CC +30 Cc 6 cC +10 AAA 8 AAA +20 BBBB 9 bBbB +40 DD 12 dd +50 ee 13 EE +50 ee 14 ee +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #694092: incorrect detection of index only pushdown conditions +# +CREATE TABLE t1 ( +f1 varchar(10), f3 int(11), PRIMARY KEY (f3) +); +INSERT INTO t1 VALUES ('y',1),('or',5); +CREATE TABLE t2 ( +f3 int(11), f2 varchar(1024), f4 varchar(10), PRIMARY KEY (f3) +); +INSERT INTO t2 VALUES (6,'RPOYT','y'),(10,'JINQE','m'); +SET SESSION join_cache_level = 1; +SET SESSION optimizer_switch = 'index_condition_pushdown=off'; +EXPLAIN +SELECT * FROM t1,t2 +WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan +1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan; Using join buffer (flat, BNL join) +SELECT * FROM t1,t2 +WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6); +f1 f3 f3 f2 f4 +SET SESSION optimizer_switch = 'index_condition_pushdown=on'; +EXPLAIN +SELECT * FROM t1,t2 +WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan +1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join) +SELECT * FROM t1,t2 +WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6); +f1 f3 f3 f2 f4 +SET SESSION join_cache_level = DEFAULT; +SET SESSION optimizer_switch = DEFAULT; +DROP TABLE t1,t2; +CREATE TABLE t1 (f1 int, f2 varchar(10), KEY (f1), KEY (f2)) ; +INSERT INTO t1 VALUES +(4,'e'), (891879424,'l'), (-243400704,'ectlyqupbk'), (1851981824,'of'), +(-1495203840,'you'), (4,'no'), (-1436942336,'c'), (891420672,'DQQYO'), +(608698368,'qergldqmec'), (1,'x'); +CREATE TABLE t2 (f3 varchar(64), KEY (f3)); +INSERT INTO t2 VALUES +('d'), ('UALLN'), ('d'), ('z'), ('r'), ('YVAKV'), ('d'), ('TNGZK'), ('e'), +('xucupaxdyythsgiw'), ('why'), ('ttugkxucupaxdyyt'), ('l'), ('LHTKN'), +('d'), ('o'), ('v'), ('KGLCJ'), ('your'); +SET SESSION optimizer_switch='index_merge_sort_intersection=off'; +SET SESSION optimizer_switch = 'index_condition_pushdown=off'; +EXPLAIN SELECT * FROM t1,t2 +WHERE t2.f3 = t1.f2 AND t1.f1 IN (9, 0, 100) ORDER BY t1.f2 LIMIT 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range f1,f2 f2 13 NULL 10 Using where +1 SIMPLE t2 ref f3 f3 67 test.t1.f2 2 Using where; Using index +SELECT * FROM t1,t2 +WHERE t2.f3 = t1.f2 AND t1.f1 IN (9, 0 ,100) ORDER BY t1.f2 LIMIT 1; +f1 f2 f3 +SET SESSION optimizer_switch = DEFAULT; +SET SESSION optimizer_switch = 'index_condition_pushdown=on'; +EXPLAIN SELECT * FROM t1,t2 +WHERE t2.f3 = t1.f2 AND t1.f1 IN (9, 0 ,100) ORDER BY t1.f2 LIMIT 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range f1,f2 f2 13 NULL 10 Using where +1 SIMPLE t2 ref f3 f3 67 test.t1.f2 2 Using where; Using index +SELECT * FROM t1,t2 +WHERE t2.f3 = t1.f2 AND t1.f1 IN (9, 0 ,100) ORDER BY t1.f2 LIMIT 1; +f1 f2 f3 +SET SESSION optimizer_switch = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #694443: hash join using IS NULL the an equi-join condition +# +CREATE TABLE t1 (a int PRIMARY KEY); +INSERT INTO t1 VALUES +(7), (4), (9), (1), (3), (8), (2); +CREATE TABLE t2 (a int, b int, INDEX idx (a)); +INSERT INTO t2 VALUES +(NULL,10), (4,80), (7,70), (6,11), (7,90), (NULL,40), +(4,77), (4,50), (NULL,41), (7,99), (7,88), (8,12), +(1,21), (4,90), (7,91), (8,22), (6,92), (NULL,42), +(2,78), (2,51), (1,43), (5,97), (5,89); +SET SESSION join_cache_level = 1; +EXPLAIN +SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +1 SIMPLE t2 ref idx idx 5 const 4 Using index condition +SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL; +a a b +1 NULL 10 +1 NULL 40 +1 NULL 41 +1 NULL 42 +2 NULL 10 +2 NULL 40 +2 NULL 41 +2 NULL 42 +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +1 SIMPLE t2 hash_range idx #hash#idx:idx 5:5 const 4 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNLH join) +SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL; +a a b +1 NULL 10 +2 NULL 10 +1 NULL 40 +2 NULL 40 +1 NULL 41 +2 NULL 41 +1 NULL 42 +2 NULL 42 +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #697557: hash join on a varchar field +# +CREATE TABLE t1 ( f1 varchar(10) , f2 int(11) , KEY (f1)); +INSERT INTO t1 VALUES ('r',1), ('m',2); +CREATE TABLE t2 ( f1 varchar(10) , f2 int(11) , KEY (f1)); +INSERT INTO t2 VALUES +('hgtofubn',1), ('GDOXZ',91), ('n',2), ('fggxgalh',88), +('hgtofu',1), ('GDO',101), ('n',3), ('fggxga',55), +('hgtofu',3), ('GDO',33), ('nn',3), ('fggxgarrr',77); +SET SESSION join_cache_level=3; +EXPLAIN +SELECT * FROM t1,t2 WHERE t2.f1 = t1.f1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL f1 NULL NULL NULL 2 Using where +1 SIMPLE t2 hash_ALL f1 #hash#f1 13 test.t1.f1 12 Using join buffer (flat, BNLH join) +SELECT * FROM t1,t2 WHERE t2.f1 = t1.f1; +f1 f2 f1 f2 +SET SESSION join_cache_level = DEFAULT; +DROP TABLE t1,t2; +# +# Bug #707827: hash join on varchar column with NULLs +# +CREATE TABLE t1 (v varchar(1)); +INSERT INTO t1 VALUES ('o'), ('u'); +CREATE TABLE t2 (a int, v varchar(1), INDEX idx (v)) ; +INSERT INTO t2 VALUES +(8,NULL), (10,'b'), (5,'k'), (4,NULL), +(1,NULL), (11,'u'), (7,NULL), (2,'d'); +SET SESSION join_buffer_size = 255; +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT a FROM t1,t2 WHERE t2.v = t1.v ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 hash_ALL idx #hash#idx 4 test.t1.v 8 Using join buffer (flat, BNLH join) +SELECT a FROM t1,t2 WHERE t2.v = t1.v ; +a +11 +SET SESSION join_cache_level = 1; +EXPLAIN +SELECT a FROM t1,t2 WHERE t2.v = t1.v ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ref idx idx 4 test.t1.v 2 +SELECT a FROM t1,t2 WHERE t2.v = t1.v ; +a +11 +SET SESSION join_cache_level = DEFAULT; +SET SESSION join_buffer_size = DEFAULT; +DROP TABLE t1,t2; +set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/join_nested.result b/mysql-test/r/join_nested.result index 7965e287da2..9d60059ac28 100644 --- a/mysql-test/r/join_nested.result +++ b/mysql-test/r/join_nested.result @@ -74,7 +74,7 @@ WHERE t3.a=1 OR t3.c IS NULL; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((`test`.`t4`.`b` = `test`.`t2`.`b`)) where ((`test`.`t3`.`a` = 1) or isnull(`test`.`t3`.`c`)) SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b @@ -150,7 +150,7 @@ WHERE t3.a>1 OR t3.c IS NULL; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Warnings: Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on((`test`.`t4`.`b` = `test`.`t2`.`b`)) where ((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`)) @@ -180,7 +180,7 @@ WHERE (t3.a>1 OR t3.c IS NULL) AND id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on((`test`.`t4`.`b` = `test`.`t2`.`b`)) where (((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`)) and ((`test`.`t5`.`a` < 3) or isnull(`test`.`t5`.`c`))) @@ -229,8 +229,8 @@ t8 ON t7.b=t8.b AND t6.b < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using join buffer -1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and (`test`.`t8`.`b` = `test`.`t7`.`b`))) where 1 SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b @@ -544,14 +544,14 @@ t0.b=t1.b AND (t2.a >= 4 OR t2.c IS NULL); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) where ((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`))) SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, @@ -639,7 +639,7 @@ t0.b=t1.b AND (t9.a=1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where @@ -647,7 +647,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) SELECT t9.a,t9.b @@ -836,9 +836,9 @@ ON t3.a=1 AND t2.b=t4.b WHERE t1.a <= 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer -1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t1` join `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) where (`test`.`t1`.`a` <= 2) CREATE INDEX idx_b ON t2(b); @@ -850,11 +850,11 @@ LEFT JOIN ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer -1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Warnings: -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(((`test`.`t3`.`a` = 1) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`b`)))) where 1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on((((`test`.`t3`.`a` = 1) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`b`))) and (`test`.`t3`.`b` is not null))) where 1 SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b FROM (t3,t4) LEFT JOIN @@ -906,7 +906,7 @@ t0.b=t1.b AND (t9.a=1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where @@ -914,7 +914,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) CREATE INDEX idx_b ON t4(b); @@ -956,7 +956,7 @@ t0.b=t1.b AND (t9.a=1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where @@ -964,9 +964,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where -1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) CREATE INDEX idx_b ON t8(b); EXPLAIN EXTENDED SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, @@ -1005,7 +1005,7 @@ t0.b=t1.b AND (t9.a=1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where @@ -1013,9 +1013,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where -1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) CREATE INDEX idx_b ON t1(b); CREATE INDEX idx_a ON t0(a); EXPLAIN EXTENDED @@ -1055,7 +1055,7 @@ t0.b=t1.b AND (t9.a=1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ref idx_a idx_a 5 const 1 100.00 Using where -1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 Using where +1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where @@ -1063,9 +1063,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where -1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b FROM t0,t1 @@ -1196,13 +1196,13 @@ INSERT INTO t3 VALUES (0), (1), (2), (3), (4), (5); EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON c < 3 and b = c; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL a 5 NULL 21 Using index -1 SIMPLE t3 index c c 5 NULL 6 Using index +1 SIMPLE t3 index c c 5 NULL 6 Using where; Using index 1 SIMPLE t2 ref b b 5 test.t3.c 2 Using index EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL a 5 NULL 21 Using index -1 SIMPLE t3 index c c 5 NULL 6 Using index -1 SIMPLE t2 ref b b 5 test.t3.c 2 Using index +1 SIMPLE t3 index c c 5 NULL 6 Using where; Using index +1 SIMPLE t2 ref b b 5 test.t3.c 2 Using where; Using index SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; a b c NULL 0 0 @@ -1272,8 +1272,8 @@ DELETE FROM t3; EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL a 5 NULL 21 Using index -1 SIMPLE t3 index c c 5 NULL 0 Using index -1 SIMPLE t2 ref b b 5 test.t3.c 2 Using index +1 SIMPLE t3 index c c 5 NULL 0 Using where; Using index +1 SIMPLE t2 ref b b 5 test.t3.c 2 Using where; Using index SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; a b c NULL NULL NULL @@ -1317,8 +1317,8 @@ c11 c21 c31 EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL NULL NULL NULL NULL 0 -1 SIMPLE t3 ALL NULL NULL NULL NULL 0 +1 SIMPLE t2 ALL NULL NULL NULL NULL 0 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where DROP TABLE t1,t2,t3; CREATE TABLE t1 (goods int(12) NOT NULL, price varchar(128) NOT NULL); INSERT INTO t1 VALUES (23, 2340), (26, 9900); @@ -1445,26 +1445,26 @@ explain select * from t4 join t2 left join (t3 join t5 on t5.a=t3.b) on t3.a=t2.b where t4.a<=>t3.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL X -1 SIMPLE t3 ref a a 5 test.t2.b X +1 SIMPLE t3 ref a a 5 test.t2.b X Using where 1 SIMPLE t5 ref a a 5 test.t3.b X -1 SIMPLE t4 ref a a 5 test.t3.b X Using where +1 SIMPLE t4 ref a a 5 test.t3.b X Using index condition explain select * from (t4 join t6 on t6.a=t4.b) right join t3 on t4.a=t3.b join t2 left join (t5 join t7 on t7.a=t5.b) on t5.a=t2.b where t3.a<=>t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL X -1 SIMPLE t3 ref a a 5 test.t2.b X Using where -1 SIMPLE t4 ref a a 5 test.t3.b X +1 SIMPLE t3 ref a a 5 test.t2.b X Using index condition +1 SIMPLE t4 ref a a 5 test.t3.b X Using where 1 SIMPLE t6 ref a a 5 test.t4.b X -1 SIMPLE t5 ref a a 5 test.t2.b X +1 SIMPLE t5 ref a a 5 test.t2.b X Using where 1 SIMPLE t7 ref a a 5 test.t5.b X explain select * from t2 left join (t3 left join (t4 join t6 on t6.a=t4.b) on t4.a=t3.b join t5 on t5.a=t3.b) on t3.a=t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL X -1 SIMPLE t3 ref a a 5 test.t2.b X +1 SIMPLE t3 ref a a 5 test.t2.b X Using where 1 SIMPLE t5 ref a a 5 test.t3.b X -1 SIMPLE t4 ref a a 5 test.t5.a X +1 SIMPLE t4 ref a a 5 test.t5.a X Using where 1 SIMPLE t6 ref a a 5 test.t4.b X drop table t0, t1, t2, t3, t4, t5, t6, t7; create table t1 (a int); @@ -1478,8 +1478,8 @@ explain select * from t1 left join on (t1.a = t2.a); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 -1 SIMPLE t2 ref a a 5 test.t1.a 1 -1 SIMPLE t3 ref a a 5 test.t1.a 1 +1 SIMPLE t2 ref a a 5 test.t1.a 1 Using where +1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where drop table t1, t2, t3; CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, type varchar(10)); CREATE TABLE t2 (pid int NOT NULL PRIMARY KEY, type varchar(10)); @@ -1729,11 +1729,11 @@ LEFT JOIN (t5 JOIN t4 ON t5.carrier_id = t4.id) ON t4.carrier = t1.carrier; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 index package_id package_id 5 NULL 45 Using index +1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 -1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 +1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where 1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index -1 SIMPLE t3 ref package_id package_id 5 test.t1.id 1 Using where; Using index +1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index SELECT COUNT(*) FROM ((t2 JOIN t1 ON t2.package_id = t1.id) JOIN t3 ON t3.package_id = t1.id) diff --git a/mysql-test/r/join_nested_jcl6.result b/mysql-test/r/join_nested_jcl6.result new file mode 100644 index 00000000000..3345540af96 --- /dev/null +++ b/mysql-test/r/join_nested_jcl6.result @@ -0,0 +1,1918 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9; +CREATE TABLE t0 (a int, b int, c int); +CREATE TABLE t1 (a int, b int, c int); +CREATE TABLE t2 (a int, b int, c int); +CREATE TABLE t3 (a int, b int, c int); +CREATE TABLE t4 (a int, b int, c int); +CREATE TABLE t5 (a int, b int, c int); +CREATE TABLE t6 (a int, b int, c int); +CREATE TABLE t7 (a int, b int, c int); +CREATE TABLE t8 (a int, b int, c int); +CREATE TABLE t9 (a int, b int, c int); +INSERT INTO t0 VALUES (1,1,0), (1,2,0), (2,2,0); +INSERT INTO t1 VALUES (1,3,0), (2,2,0), (3,2,0); +INSERT INTO t2 VALUES (3,3,0), (4,2,0), (5,3,0); +INSERT INTO t3 VALUES (1,2,0), (2,2,0); +INSERT INTO t4 VALUES (3,2,0), (4,2,0); +INSERT INTO t5 VALUES (3,1,0), (2,2,0), (3,3,0); +INSERT INTO t6 VALUES (3,2,0), (6,2,0), (6,1,0); +INSERT INTO t7 VALUES (1,1,0), (2,2,0); +INSERT INTO t8 VALUES (0,2,0), (1,2,0); +INSERT INTO t9 VALUES (1,1,0), (1,2,0), (3,3,0); +SELECT t2.a,t2.b +FROM t2; +a b +3 3 +4 2 +5 3 +SELECT t3.a,t3.b +FROM t3; +a b +1 2 +2 2 +SELECT t4.a,t4.b +FROM t4; +a b +3 2 +4 2 +SELECT t3.a,t3.b,t4.a,t4.b +FROM t3,t4; +a b a b +1 2 3 2 +2 2 3 2 +1 2 4 2 +2 2 4 2 +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t2.b=t4.b; +a b a b a b +4 2 1 2 3 2 +4 2 2 2 3 2 +4 2 1 2 4 2 +4 2 2 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +EXPLAIN EXTENDED +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t2.b=t4.b +WHERE t3.a=1 OR t3.c IS NULL; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` is not null))) where ((`test`.`t3`.`a` = 1) or isnull(`test`.`t3`.`c`)) +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t2.b=t4.b +WHERE t3.a=1 OR t3.c IS NULL; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t2.b=t4.b +WHERE t3.a>1 OR t3.c IS NULL; +a b a b a b +4 2 2 2 3 2 +4 2 2 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +SELECT t5.a,t5.b +FROM t5; +a b +3 1 +2 2 +3 3 +SELECT t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t3,t4,t5; +a b a b a b +1 2 3 2 3 1 +2 2 3 2 3 1 +1 2 4 2 3 1 +2 2 4 2 3 1 +1 2 3 2 2 2 +2 2 3 2 2 2 +1 2 4 2 2 2 +2 2 4 2 2 2 +1 2 3 2 3 3 +2 2 3 2 3 3 +1 2 4 2 3 3 +2 2 4 2 3 3 +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t2 +LEFT JOIN +(t3, t4, t5) +ON t2.b=t4.b; +a b a b a b a b +4 2 1 2 3 2 3 1 +4 2 2 2 3 2 3 1 +4 2 1 2 4 2 3 1 +4 2 2 2 4 2 3 1 +4 2 1 2 3 2 2 2 +4 2 2 2 3 2 2 2 +4 2 1 2 4 2 2 2 +4 2 2 2 4 2 2 2 +4 2 1 2 3 2 3 3 +4 2 2 2 3 2 3 3 +4 2 1 2 4 2 3 3 +4 2 2 2 4 2 3 3 +3 3 NULL NULL NULL NULL NULL NULL +5 3 NULL NULL NULL NULL NULL NULL +EXPLAIN EXTENDED +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t2 +LEFT JOIN +(t3, t4, t5) +ON t2.b=t4.b +WHERE t3.a>1 OR t3.c IS NULL; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` is not null))) where ((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`)) +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t2 +LEFT JOIN +(t3, t4, t5) +ON t2.b=t4.b +WHERE t3.a>1 OR t3.c IS NULL; +a b a b a b a b +4 2 2 2 3 2 3 1 +4 2 2 2 4 2 3 1 +4 2 2 2 3 2 2 2 +4 2 2 2 4 2 2 2 +4 2 2 2 3 2 3 3 +4 2 2 2 4 2 3 3 +3 3 NULL NULL NULL NULL NULL NULL +5 3 NULL NULL NULL NULL NULL NULL +EXPLAIN EXTENDED +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t2 +LEFT JOIN +(t3, t4, t5) +ON t2.b=t4.b +WHERE (t3.a>1 OR t3.c IS NULL) AND +(t5.a<3 OR t5.c IS NULL); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` is not null))) where (((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`)) and ((`test`.`t5`.`a` < 3) or isnull(`test`.`t5`.`c`))) +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b +FROM t2 +LEFT JOIN +(t3, t4, t5) +ON t2.b=t4.b +WHERE (t3.a>1 OR t3.c IS NULL) AND +(t5.a<3 OR t5.c IS NULL); +a b a b a b a b +4 2 2 2 3 2 2 2 +4 2 2 2 4 2 2 2 +3 3 NULL NULL NULL NULL NULL NULL +5 3 NULL NULL NULL NULL NULL NULL +SELECT t6.a,t6.b +FROM t6; +a b +3 2 +6 2 +6 1 +SELECT t7.a,t7.b +FROM t7; +a b +1 1 +2 2 +SELECT t6.a,t6.b,t7.a,t7.b +FROM t6,t7; +a b a b +3 2 1 1 +3 2 2 2 +6 2 1 1 +6 2 2 2 +6 1 1 1 +6 1 2 2 +SELECT t8.a,t8.b +FROM t8; +a b +0 2 +1 2 +EXPLAIN EXTENDED +SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM (t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t7.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +Warnings: +Note 1003 select `test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and (`test`.`t8`.`b` = `test`.`t7`.`b`)) and (`test`.`t7`.`b` is not null))) where 1 +SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM (t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10; +a b a b a b +3 2 2 2 0 2 +6 2 2 2 0 2 +6 1 2 2 0 2 +3 2 2 2 1 2 +6 2 2 2 1 2 +6 1 2 2 1 2 +3 2 1 1 NULL NULL +6 2 1 1 NULL NULL +6 1 1 1 NULL NULL +SELECT t5.a,t5.b +FROM t5; +a b +3 1 +2 2 +3 3 +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b; +a b a b a b a b +2 2 3 2 2 2 0 2 +2 2 6 2 2 2 0 2 +2 2 3 2 2 2 1 2 +2 2 6 2 2 2 1 2 +3 1 3 2 1 1 NULL NULL +3 1 6 2 1 1 NULL NULL +3 3 NULL NULL NULL NULL NULL NULL +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b AND +(t8.a < 1 OR t8.c IS NULL); +a b a b a b a b +2 2 3 2 2 2 0 2 +2 2 6 2 2 2 0 2 +3 1 3 2 1 1 NULL NULL +3 1 6 2 1 1 NULL NULL +3 3 NULL NULL NULL NULL NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b; +a b a b a b a b a b a b a b +4 2 1 2 3 2 2 2 3 2 2 2 0 2 +4 2 1 2 4 2 2 2 3 2 2 2 0 2 +4 2 1 2 3 2 2 2 6 2 2 2 0 2 +4 2 1 2 4 2 2 2 6 2 2 2 0 2 +4 2 1 2 3 2 2 2 3 2 2 2 1 2 +4 2 1 2 4 2 2 2 3 2 2 2 1 2 +4 2 1 2 3 2 2 2 6 2 2 2 1 2 +4 2 1 2 4 2 2 2 6 2 2 2 1 2 +4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +WHERE t2.a > 3 AND +(t6.a < 6 OR t6.c IS NULL); +a b a b a b a b a b a b a b +4 2 1 2 3 2 2 2 3 2 2 2 0 2 +4 2 1 2 4 2 2 2 3 2 2 2 0 2 +4 2 1 2 3 2 2 2 3 2 2 2 1 2 +4 2 1 2 4 2 2 2 3 2 2 2 1 2 +4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +SELECT t1.a,t1.b +FROM t1; +a b +1 3 +2 2 +3 2 +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2); +a b a b a b a b a b a b a b a b +3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2 +3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2 +3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 +3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 +3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2 +3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2 +3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2 +3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2 +1 3 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +1 3 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +1 3 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +1 3 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +1 3 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +1 3 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +1 3 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +3 2 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +1 3 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +3 2 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +1 3 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +3 2 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +1 3 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +3 2 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +1 3 3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +3 2 3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +1 3 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +1 3 3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +3 2 3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +1 3 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +1 3 3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +3 2 3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +1 3 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2) +WHERE (t2.a >= 4 OR t2.c IS NULL); +a b a b a b a b a b a b a b a b +3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2 +3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2 +3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 +3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 +3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2 +3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2 +3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2 +3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2 +1 3 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +1 3 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +1 3 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +1 3 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +1 3 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +1 3 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +1 3 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +1 3 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +1 3 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL +SELECT t0.a,t0.b +FROM t0; +a b +1 1 +1 2 +2 2 +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2) +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) where ((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`))) +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2) +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL); +a b a b a b a b a b a b a b a b a b +1 2 3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2 +1 2 3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2 +1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 +1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 +1 2 3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2 +1 2 3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2 +1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2 +1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2 +1 2 3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL +1 2 3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL +1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL +1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL +1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL +1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2 +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL +1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL +1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +SELECT t9.a,t9.b +FROM t9; +a b +1 1 +1 2 +3 3 +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +a b a b a b a b a b a b a b a b a b a b +1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1 +1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2 +SELECT t1.a,t1.b +FROM t1; +a b +1 3 +2 2 +3 2 +SELECT t2.a,t2.b +FROM t2; +a b +3 3 +4 2 +5 3 +SELECT t3.a,t3.b +FROM t3; +a b +1 2 +2 2 +SELECT t2.a,t2.b,t3.a,t3.b +FROM t2 +LEFT JOIN +t3 +ON t2.b=t3.b; +a b a b +4 2 1 2 +4 2 2 2 +3 3 NULL NULL +5 3 NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b +FROM t1, t2 +LEFT JOIN +t3 +ON t2.b=t3.b +WHERE t1.a <= 2; +a b a b a b +1 3 4 2 1 2 +2 2 4 2 1 2 +1 3 4 2 2 2 +2 2 4 2 2 2 +1 3 3 3 NULL NULL +2 2 3 3 NULL NULL +1 3 5 3 NULL NULL +2 2 5 3 NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b +FROM t1, t3 +RIGHT JOIN +t2 +ON t2.b=t3.b +WHERE t1.a <= 2; +a b a b a b +1 3 4 2 1 2 +2 2 4 2 1 2 +1 3 4 2 2 2 +2 2 4 2 2 2 +1 3 3 3 NULL NULL +2 2 3 3 NULL NULL +1 3 5 3 NULL NULL +2 2 5 3 NULL NULL +SELECT t3.a,t3.b,t4.a,t4.b +FROM t3,t4; +a b a b +1 2 3 2 +2 2 3 2 +1 2 4 2 +2 2 4 2 +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +3 3 NULL NULL NULL NULL +5 3 NULL NULL NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t1, t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b +WHERE t1.a <= 2; +a b a b a b a b +1 3 4 2 1 2 3 2 +2 2 4 2 1 2 3 2 +1 3 4 2 1 2 4 2 +2 2 4 2 1 2 4 2 +1 3 3 3 NULL NULL NULL NULL +2 2 3 3 NULL NULL NULL NULL +1 3 5 3 NULL NULL NULL NULL +2 2 5 3 NULL NULL NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t1, (t3, t4) +RIGHT JOIN +t2 +ON t3.a=1 AND t2.b=t4.b +WHERE t1.a <= 2; +a b a b a b a b +1 3 4 2 1 2 3 2 +2 2 4 2 1 2 3 2 +1 3 4 2 1 2 4 2 +2 2 4 2 1 2 4 2 +1 3 3 3 NULL NULL NULL NULL +2 2 3 3 NULL NULL NULL NULL +1 3 5 3 NULL NULL NULL NULL +2 2 5 3 NULL NULL NULL NULL +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t1, (t3, t4) +RIGHT JOIN +t2 +ON t3.a=1 AND t2.b=t4.b +WHERE t1.a <= 2; +a b a b a b a b +1 3 4 2 1 2 3 2 +2 2 4 2 1 2 3 2 +1 3 4 2 1 2 4 2 +2 2 4 2 1 2 4 2 +1 3 3 3 NULL NULL NULL NULL +2 2 3 3 NULL NULL NULL NULL +1 3 5 3 NULL NULL NULL NULL +2 2 5 3 NULL NULL NULL NULL +EXPLAIN EXTENDED +SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM t1, (t3, t4) +RIGHT JOIN +t2 +ON t3.a=1 AND t2.b=t4.b +WHERE t1.a <= 2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t1` join `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) where (`test`.`t1`.`a` <= 2) +CREATE INDEX idx_b ON t2(b); +EXPLAIN EXTENDED +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM (t3,t4) +LEFT JOIN +(t1,t2) +ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join) +1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on((((`test`.`t3`.`a` = 1) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`b`))) and (`test`.`t3`.`b` is not null))) where 1 +SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b +FROM (t3,t4) +LEFT JOIN +(t1,t2) +ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b; +a b a b a b +4 2 1 2 3 2 +4 2 1 2 4 2 +4 2 1 2 3 2 +4 2 1 2 4 2 +4 2 1 2 3 2 +4 2 1 2 4 2 +NULL NULL 2 2 3 2 +NULL NULL 2 2 4 2 +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 hash_ALL NULL #hash#$hj 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +CREATE INDEX idx_b ON t4(b); +CREATE INDEX idx_b ON t5(b); +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +CREATE INDEX idx_b ON t8(b); +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +CREATE INDEX idx_b ON t1(b); +CREATE INDEX idx_a ON t0(a); +EXPLAIN EXTENDED +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ref idx_a idx_a 5 const 1 100.00 Using where +1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t7`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`))) +SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, +t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b +FROM t0,t1 +LEFT JOIN +( +t2 +LEFT JOIN +(t3, t4) +ON t3.a=1 AND t2.b=t4.b, +t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b +) +ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND +(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND +(t1.a != 2), +t9 +WHERE t0.a=1 AND +t0.b=t1.b AND +(t2.a >= 4 OR t2.c IS NULL) AND +(t3.a < 5 OR t3.c IS NULL) AND +(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND +(t5.a >=2 OR t5.c IS NULL) AND +(t6.a >=4 OR t6.c IS NULL) AND +(t7.a <= 2 OR t7.c IS NULL) AND +(t8.a < 1 OR t8.c IS NULL) AND +(t8.b=t9.b OR t8.c IS NULL) AND +(t9.a=1); +a b a b a b a b a b a b a b a b a b a b +1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1 +1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2 +1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1 +1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2 +1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1 +1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2 +SELECT t2.a,t2.b +FROM t2; +a b +3 3 +4 2 +5 3 +SELECT t3.a,t3.b +FROM t3; +a b +1 2 +2 2 +SELECT t2.a,t2.b,t3.a,t3.b +FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL); +a b a b +4 2 1 2 +4 2 2 2 +5 3 NULL NULL +SELECT t2.a,t2.b,t3.a,t3.b +FROM t2 LEFT JOIN (t3) ON t2.b=t3.b +WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL); +a b a b +4 2 1 2 +4 2 2 2 +5 3 NULL NULL +ALTER TABLE t3 +CHANGE COLUMN a a1 int, +CHANGE COLUMN c c1 int; +SELECT t2.a,t2.b,t3.a1,t3.b +FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL); +a b a1 b +4 2 1 2 +4 2 2 2 +5 3 NULL NULL +SELECT t2.a,t2.b,t3.a1,t3.b +FROM t2 NATURAL LEFT JOIN t3 +WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL); +a b a1 b +4 2 1 2 +4 2 2 2 +5 3 NULL NULL +DROP TABLE t0,t1,t2,t3,t4,t5,t6,t7,t8,t9; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int); +CREATE TABLE t3 (a int); +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (2); +INSERT INTO t3 VALUES (2); +INSERT INTO t1 VALUES (2); +SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.a=t3.a) ON t1.a=t3.a; +a a a +2 2 2 +1 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a; +a a a +2 2 2 +1 NULL NULL +DELETE FROM t1 WHERE a=2; +SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a; +a a a +1 NULL NULL +DELETE FROM t2; +SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a; +a a a +1 NULL NULL +DROP TABLE t1,t2,t3; +CREATE TABLE t1(a int, key (a)); +CREATE TABLE t2(b int, key (b)); +CREATE TABLE t3(c int, key (c)); +INSERT INTO t1 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9), +(10), (11), (12), (13), (14), (15), (16), (17), (18), (19); +INSERT INTO t2 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9), +(10), (11), (12), (13), (14), (15), (16), (17), (18), (19); +INSERT INTO t3 VALUES (0), (1), (2), (3), (4), (5); +EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON c < 3 and b = c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL a 5 NULL 21 Using index +1 SIMPLE t3 index c c 5 NULL 6 Using where; Using index +1 SIMPLE t2 ref b b 5 test.t3.c 2 Using index +EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL a 5 NULL 21 Using index +1 SIMPLE t3 index c c 5 NULL 6 Using where; Using index +1 SIMPLE t2 ref b b 5 test.t3.c 2 Using where; Using index +SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; +a b c +NULL 0 0 +NULL 1 1 +NULL 2 2 +0 0 0 +0 1 1 +0 2 2 +1 0 0 +1 1 1 +1 2 2 +2 0 0 +2 1 1 +2 2 2 +3 0 0 +3 1 1 +3 2 2 +4 0 0 +4 1 1 +4 2 2 +5 0 0 +5 1 1 +5 2 2 +6 0 0 +6 1 1 +6 2 2 +7 0 0 +7 1 1 +7 2 2 +8 0 0 +8 1 1 +8 2 2 +9 0 0 +9 1 1 +9 2 2 +10 0 0 +10 1 1 +10 2 2 +11 0 0 +11 1 1 +11 2 2 +12 0 0 +12 1 1 +12 2 2 +13 0 0 +13 1 1 +13 2 2 +14 0 0 +14 1 1 +14 2 2 +15 0 0 +15 1 1 +15 2 2 +16 0 0 +16 1 1 +16 2 2 +17 0 0 +17 1 1 +17 2 2 +18 0 0 +18 1 1 +18 2 2 +19 0 0 +19 1 1 +19 2 2 +DELETE FROM t3; +EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL a 5 NULL 21 Using index +1 SIMPLE t3 index c c 5 NULL 0 Using where; Using index +1 SIMPLE t2 ref b b 5 test.t3.c 2 Using where; Using index +SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; +a b c +NULL NULL NULL +0 NULL NULL +1 NULL NULL +2 NULL NULL +3 NULL NULL +4 NULL NULL +5 NULL NULL +6 NULL NULL +7 NULL NULL +8 NULL NULL +9 NULL NULL +10 NULL NULL +11 NULL NULL +12 NULL NULL +13 NULL NULL +14 NULL NULL +15 NULL NULL +16 NULL NULL +17 NULL NULL +18 NULL NULL +19 NULL NULL +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (c11 int); +CREATE TABLE t2 (c21 int); +CREATE TABLE t3 (c31 int); +INSERT INTO t1 VALUES (4), (5); +SELECT * FROM t1 LEFT JOIN t2 ON c11=c21; +c11 c21 +4 NULL +5 NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON c11=c21; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 system NULL NULL NULL NULL 0 const row not found +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; +c11 c21 c31 +4 NULL NULL +5 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.c11 0 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where; Using join buffer (incremental, BNL join) +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (goods int(12) NOT NULL, price varchar(128) NOT NULL); +INSERT INTO t1 VALUES (23, 2340), (26, 9900); +CREATE TABLE t2 (goods int(12), name varchar(50), shop char(2)); +INSERT INTO t2 VALUES (23, 'as300', 'fr'), (26, 'as600', 'fr'); +create table t3 (groupid int(12) NOT NULL, goodsid int(12) NOT NULL); +INSERT INTO t3 VALUES (3,23), (6,26); +CREATE TABLE t4 (groupid int(12)); +INSERT INTO t4 VALUES (1), (2), (3), (4), (5), (6); +SELECT * FROM +(SELECT DISTINCT gl.groupid, gp.price +FROM t4 gl +LEFT JOIN +(t3 g INNER JOIN t2 p ON g.goodsid = p.goods +INNER JOIN t1 gp ON p.goods = gp.goods) +ON gl.groupid = g.groupid and p.shop = 'fr') t; +groupid price +3 2340 +6 9900 +1 NULL +2 NULL +4 NULL +5 NULL +CREATE VIEW v1 AS +SELECT g.groupid groupid, p.goods goods, +p.name name, p.shop shop, +gp.price price +FROM t3 g INNER JOIN t2 p ON g.goodsid = p.goods +INNER JOIN t1 gp on p.goods = gp.goods; +CREATE VIEW v2 AS +SELECT DISTINCT g.groupid, fr.price +FROM t4 g +LEFT JOIN +v1 fr on g.groupid = fr.groupid and fr.shop = 'fr'; +SELECT * FROM v2; +groupid price +3 2340 +6 9900 +1 NULL +2 NULL +4 NULL +5 NULL +SELECT * FROM +(SELECT DISTINCT g.groupid, fr.price +FROM t4 g +LEFT JOIN +v1 fr on g.groupid = fr.groupid and fr.shop = 'fr') t; +groupid price +3 2340 +6 9900 +1 NULL +2 NULL +4 NULL +5 NULL +DROP VIEW v1,v2; +DROP TABLE t1,t2,t3,t4; +CREATE TABLE t1(a int); +CREATE TABLE t2(b int); +CREATE TABLE t3(c int, d int); +CREATE TABLE t4(d int); +CREATE TABLE t5(e int, f int); +CREATE TABLE t6(f int); +CREATE VIEW v1 AS +SELECT e FROM t5 JOIN t6 ON t5.e=t6.f; +CREATE VIEW v2 AS +SELECT e FROM t5 NATURAL JOIN t6; +SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d); +a +SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d); +ERROR 42S22: Unknown column 't1.x' in 'field list' +SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4; +a +SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4; +ERROR 42S22: Unknown column 't1.x' in 'field list' +SELECT v1.e FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d); +e +SELECT v1.x FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d); +ERROR 42S22: Unknown column 'v1.x' in 'field list' +SELECT v2.e FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d); +e +SELECT v2.x FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d); +ERROR 42S22: Unknown column 'v2.x' in 'field list' +DROP VIEW v1, v2; +DROP TABLE t1, t2, t3, t4, t5, t6; +create table t1 (id1 int(11) not null); +insert into t1 values (1),(2); +create table t2 (id2 int(11) not null); +insert into t2 values (1),(2),(3),(4); +create table t3 (id3 char(16) not null); +insert into t3 values ('100'); +create table t4 (id2 int(11) not null, id3 char(16)); +create table t5 (id1 int(11) not null, key (id1)); +insert into t5 values (1),(2),(1); +create view v1 as +select t4.id3 from t4 join t2 on t4.id2 = t2.id2; +select t1.id1 from t1 inner join (t3 left join v1 on t3.id3 = v1.id3); +id1 +1 +2 +drop view v1; +drop table t1, t2, t3, t4, t5; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3); +create table t1(a int); +insert into t1 select A.a + 10*(B.a) from t0 A, t0 B; +create table t2 (a int, b int); +insert into t2 values (1,1), (2,2), (3,3); +create table t3(a int, b int, filler char(200), key(a)); +insert into t3 select a,a,'filler' from t1; +insert into t3 select a,a,'filler' from t1; +create table t4 like t3; +insert into t4 select * from t3; +insert into t4 select * from t3; +create table t5 like t4; +insert into t5 select * from t4; +insert into t5 select * from t4; +create table t6 like t5; +insert into t6 select * from t5; +insert into t6 select * from t5; +create table t7 like t6; +insert into t7 select * from t6; +insert into t7 select * from t6; +explain select * from t4 join +t2 left join (t3 join t5 on t5.a=t3.b) on t3.a=t2.b where t4.a<=>t3.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL X +1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 ref a a 5 test.t3.b X Using index condition(BKA); Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +explain select * from (t4 join t6 on t6.a=t4.b) right join t3 on t4.a=t3.b +join t2 left join (t5 join t7 on t7.a=t5.b) on t5.a=t2.b where t3.a<=>t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL X +1 SIMPLE t3 ref a a 5 test.t2.b X Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 ref a a 5 test.t3.b X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ref a a 5 test.t2.b X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t7 ref a a 5 test.t5.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +explain select * from t2 left join +(t3 left join (t4 join t6 on t6.a=t4.b) on t4.a=t3.b +join t5 on t5.a=t3.b) on t3.a=t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL X +1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 ref a a 5 test.t5.a X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +drop table t0, t1, t2, t3, t4, t5, t6, t7; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, filler char(100), key(a)); +insert into t2 select A.a + 10*B.a, '' from t1 A, t1 B; +create table t3 like t2; +insert into t3 select * from t2; +explain select * from t1 left join +(t2 left join t3 on (t2.a = t3.a)) +on (t1.a = t2.a); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 +1 SIMPLE t2 ref a a 5 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +drop table t1, t2, t3; +CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, type varchar(10)); +CREATE TABLE t2 (pid int NOT NULL PRIMARY KEY, type varchar(10)); +CREATE TABLE t3 (cid int NOT NULL PRIMARY KEY, +id int NOT NULL, +pid int NOT NULL); +INSERT INTO t1 VALUES (1, 'A'), (3, 'C'); +INSERT INTO t2 VALUES (1, 'A'), (3, 'C'); +INSERT INTO t3 VALUES (1, 1, 1), (3, 3, 3); +SELECT * FROM t1 p LEFT JOIN (t3 JOIN t1) +ON (t1.id=t3.id AND t1.type='B' AND p.id=t3.id) +LEFT JOIN t2 ON (t3.pid=t2.pid) +WHERE p.id=1; +id type cid id pid id type pid type +1 A NULL NULL NULL NULL NULL NULL NULL +CREATE VIEW v1 AS +SELECT t3.* FROM t3 JOIN t1 ON t1.id=t3.id AND t1.type='B'; +SELECT * FROM t1 p LEFT JOIN v1 ON p.id=v1.id +LEFT JOIN t2 ON v1.pid=t2.pid +WHERE p.id=1; +id type cid id pid pid type +1 A NULL NULL NULL NULL NULL +DROP VIEW v1; +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id1 int PRIMARY KEY, id2 int); +CREATE TABLE t2 (id1 int PRIMARY KEY, id2 int); +CREATE TABLE t3 (id1 int PRIMARY KEY, id2 int); +CREATE TABLE t4 (id1 int PRIMARY KEY, id2 int); +CREATE TABLE t5 (id1 int PRIMARY KEY, id2 int); +SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa +FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1 +LEFT OUTER JOIN +(t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1) +ON t3.id2 IS NOT NULL +WHERE t1.id1=2; +id ngroupbynsa +PREPARE stmt FROM +"SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa + FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1 + LEFT OUTER JOIN + (t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1) + ON t3.id2 IS NOT NULL + WHERE t1.id1=2"; +EXECUTE stmt; +id ngroupbynsa +EXECUTE stmt; +id ngroupbynsa +EXECUTE stmt; +id ngroupbynsa +EXECUTE stmt; +id ngroupbynsa +INSERT INTO t1 VALUES (1,1), (2,1), (3,2); +INSERT INTO t2 VALUES (2,1), (3,2), (4,3); +INSERT INTO t3 VALUES (1,1), (3,2), (2,NULL); +INSERT INTO t4 VALUES (1,1), (2,1), (3,3); +INSERT INTO t5 VALUES (1,1), (2,2), (3,3), (4,3); +EXECUTE stmt; +id ngroupbynsa +2 1 +2 1 +EXECUTE stmt; +id ngroupbynsa +2 1 +2 1 +EXECUTE stmt; +id ngroupbynsa +2 1 +2 1 +EXECUTE stmt; +id ngroupbynsa +2 1 +2 1 +SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa +FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1 +LEFT OUTER JOIN +(t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1) +ON t3.id2 IS NOT NULL +WHERE t1.id1=2; +id ngroupbynsa +2 1 +2 1 +DROP TABLE t1,t2,t3,t4,t5; +CREATE TABLE t1 ( +id int NOT NULL PRIMARY KEY, +ct int DEFAULT NULL, +pc int DEFAULT NULL, +INDEX idx_ct (ct), +INDEX idx_pc (pc) +); +INSERT INTO t1 VALUES +(1,NULL,NULL),(2,NULL,NULL),(3,NULL,NULL),(4,NULL,NULL),(5,NULL,NULL); +CREATE TABLE t2 ( +id int NOT NULL PRIMARY KEY, +sr int NOT NULL, +nm varchar(255) NOT NULL, +INDEX idx_sr (sr) +); +INSERT INTO t2 VALUES +(2441905,4308,'LesAbymes'),(2441906,4308,'Anse-Bertrand'); +CREATE TABLE t3 ( +id int NOT NULL PRIMARY KEY, +ct int NOT NULL, +ln int NOT NULL, +INDEX idx_ct (ct), +INDEX idx_ln (ln) +); +CREATE TABLE t4 ( +id int NOT NULL PRIMARY KEY, +nm varchar(255) NOT NULL +); +INSERT INTO t4 VALUES (4308,'Guadeloupe'),(4309,'Martinique'); +SELECT t1.* +FROM t1 LEFT JOIN +(t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id +WHERE t1.id='5'; +id ct pc +5 NULL NULL +SELECT t1.*, t4.nm +FROM t1 LEFT JOIN +(t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id +LEFT JOIN t4 ON t2.sr=t4.id +WHERE t1.id='5'; +id ct pc nm +5 NULL NULL NULL +DROP TABLE t1,t2,t3,t4; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT); +CREATE TABLE t3 (a INT, c INT); +CREATE TABLE t4 (a INT, c INT); +CREATE TABLE t5 (a INT, c INT); +SELECT b FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a) +LEFT JOIN t5 USING (a)) USING (a); +b +SELECT c FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a) +LEFT JOIN t5 USING (a)) USING (a); +ERROR 23000: Column 'c' in field list is ambiguous +SELECT b FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a) +JOIN t5 USING (a)) USING (a); +b +SELECT c FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a) +JOIN t5 USING (a)) USING (a); +ERROR 23000: Column 'c' in field list is ambiguous +DROP TABLE t1,t2,t3,t4,t5; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT, b INT); +CREATE TABLE t3 (a INT, b INT); +INSERT INTO t1 VALUES (1,1); +INSERT INTO t2 VALUES (1,1); +INSERT INTO t3 VALUES (1,1); +SELECT * FROM t1 JOIN (t2 JOIN t3 USING (b)) USING (a); +ERROR 23000: Column 'a' in from clause is ambiguous +DROP TABLE t1,t2,t3; +CREATE TABLE t1 ( +carrier char(2) default NULL, +id int NOT NULL auto_increment PRIMARY KEY +); +INSERT INTO t1 VALUES +('CO',235371754),('CO',235376554),('CO',235376884),('CO',235377874), +('CO',231060394),('CO',231059224),('CO',231059314),('CO',231060484), +('CO',231060274),('CO',231060124),('CO',231060244),('CO',231058594), +('CO',231058924),('CO',231058504),('CO',231059344),('CO',231060424), +('CO',231059554),('CO',231060304),('CO',231059644),('CO',231059464), +('CO',231059764),('CO',231058294),('CO',231058624),('CO',231058864), +('CO',231059374),('CO',231059584),('CO',231059734),('CO',231059014), +('CO',231059854),('CO',231059494),('CO',231059794),('CO',231058534), +('CO',231058324),('CO',231058684),('CO',231059524),('CO',231059974); +CREATE TABLE t2 ( +scan_date date default NULL, +package_id int default NULL, +INDEX scan_date(scan_date), +INDEX package_id(package_id) +); +INSERT INTO t2 VALUES +('2008-12-29',231062944),('2008-12-29',231065764),('2008-12-29',231066124), +('2008-12-29',231060094),('2008-12-29',231061054),('2008-12-29',231065644), +('2008-12-29',231064384),('2008-12-29',231064444),('2008-12-29',231073774), +('2008-12-29',231058594),('2008-12-29',231059374),('2008-12-29',231066004), +('2008-12-29',231068494),('2008-12-29',231070174),('2008-12-29',231071884), +('2008-12-29',231063274),('2008-12-29',231063754),('2008-12-29',231064144), +('2008-12-29',231069424),('2008-12-29',231073714),('2008-12-29',231058414), +('2008-12-29',231060994),('2008-12-29',231069154),('2008-12-29',231068614), +('2008-12-29',231071464),('2008-12-29',231074014),('2008-12-29',231059614), +('2008-12-29',231059074),('2008-12-29',231059464),('2008-12-29',231069094), +('2008-12-29',231067294),('2008-12-29',231070144),('2008-12-29',231073804), +('2008-12-29',231072634),('2008-12-29',231058294),('2008-12-29',231065344), +('2008-12-29',231066094),('2008-12-29',231069034),('2008-12-29',231058594), +('2008-12-29',231059854),('2008-12-29',231059884),('2008-12-29',231059914), +('2008-12-29',231063664),('2008-12-29',231063814),('2008-12-29',231063904); +CREATE TABLE t3 ( +package_id int default NULL, +INDEX package_id(package_id) +); +INSERT INTO t3 VALUES +(231058294),(231058324),(231058354),(231058384),(231058414),(231058444), +(231058474),(231058504),(231058534),(231058564),(231058594),(231058624), +(231058684),(231058744),(231058804),(231058864),(231058924),(231058954), +(231059014),(231059074),(231059104),(231059134),(231059164),(231059194), +(231059224),(231059254),(231059284),(231059314),(231059344),(231059374), +(231059404),(231059434),(231059464),(231059494),(231059524),(231059554), +(231059584),(231059614),(231059644),(231059674),(231059704),(231059734), +(231059764),(231059794),(231059824),(231059854),(231059884),(231059914), +(231059944),(231059974),(231060004),(231060034),(231060064),(231060094), +(231060124),(231060154),(231060184),(231060214),(231060244),(231060274), +(231060304),(231060334),(231060364),(231060394),(231060424),(231060454), +(231060484),(231060514),(231060544),(231060574),(231060604),(231060634), +(231060664),(231060694),(231060724),(231060754),(231060784),(231060814), +(231060844),(231060874),(231060904),(231060934),(231060964),(231060994), +(231061024),(231061054),(231061084),(231061144),(231061174),(231061204), +(231061234),(231061294),(231061354),(231061384),(231061414),(231061474), +(231061564),(231061594),(231061624),(231061684),(231061714),(231061774), +(231061804),(231061894),(231061984),(231062074),(231062134),(231062224), +(231062254),(231062314),(231062374),(231062434),(231062494),(231062554), +(231062584),(231062614),(231062644),(231062704),(231062734),(231062794), +(231062854),(231062884),(231062944),(231063004),(231063034),(231063064), +(231063124),(231063154),(231063184),(231063214),(231063274),(231063334), +(231063394),(231063424),(231063454),(231063514),(231063574),(231063664); +CREATE TABLE t4 ( +carrier char(2) NOT NULL default '' PRIMARY KEY, +id int(11) default NULL, +INDEX id(id) +); +INSERT INTO t4 VALUES +('99',6),('SK',456),('UA',486),('AI',1081),('OS',1111),('VS',1510); +CREATE TABLE t5 ( +carrier_id int default NULL, +INDEX carrier_id(carrier_id) +); +INSERT INTO t5 VALUES +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6), +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6), +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6), +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6), +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6), +(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(456),(456),(456), +(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456), +(456),(486),(1081),(1111),(1111),(1111),(1111),(1510); +SELECT COUNT(*) +FROM((t2 JOIN t1 ON t2.package_id = t1.id) +JOIN t3 ON t3.package_id = t1.id); +COUNT(*) +6 +EXPLAIN +SELECT COUNT(*) +FROM ((t2 JOIN t1 ON t2.package_id = t1.id) +JOIN t3 ON t3.package_id = t1.id) +LEFT JOIN +(t5 JOIN t4 ON t5.carrier_id = t4.id) +ON t4.carrier = t1.carrier; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where +1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index +1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index +SELECT COUNT(*) +FROM ((t2 JOIN t1 ON t2.package_id = t1.id) +JOIN t3 ON t3.package_id = t1.id) +LEFT JOIN +(t5 JOIN t4 ON t5.carrier_id = t4.id) +ON t4.carrier = t1.carrier; +COUNT(*) +6 +DROP TABLE t1,t2,t3,t4,t5; +CREATE TABLE t1 ( +pk int NOT NULL AUTO_INCREMENT PRIMARY KEY, +a int DEFAULT NULL, +KEY idx(a) +); +CREATE TABLE t2 ( +pk int NOT NULL AUTO_INCREMENT PRIMARY KEY, +a int DEFAULT NULL, +KEY idx(a) +); +CREATE TABLE t3 ( +pk int NOT NULL AUTO_INCREMENT PRIMARY KEY, +a int DEFAULT NULL, +KEY idx(a) +); +INSERT INTO t1 VALUES +(1,2), (2,7), (3,5), (4,7), (5,5), (6,NULL), (7,NULL), (8,9); +INSERT INTO t2 VALUES +(1,NULL), (4,2), (5,2), (3,4), (2,8); +INSERT INTO t3 VALUES +(1,9), (2,2), (3,5), (4,2), (5,7), (6,0), (7,5); +SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a +FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a; +pk a pk a pk a +1 2 4 2 2 2 +1 2 5 2 2 2 +1 2 4 2 4 2 +1 2 5 2 4 2 +2 7 NULL NULL NULL NULL +3 5 NULL NULL NULL NULL +4 7 NULL NULL NULL NULL +5 5 NULL NULL NULL NULL +6 NULL NULL NULL NULL NULL +7 NULL NULL NULL NULL NULL +8 9 NULL NULL NULL NULL +SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a +FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a +WHERE t2.pk IS NULL; +pk a pk a pk a +2 7 NULL NULL NULL NULL +3 5 NULL NULL NULL NULL +4 7 NULL NULL NULL NULL +5 5 NULL NULL NULL NULL +6 NULL NULL NULL NULL NULL +7 NULL NULL NULL NULL NULL +8 9 NULL NULL NULL NULL +SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a +FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a +WHERE t3.pk IS NULL; +pk a pk a pk a +2 7 NULL NULL NULL NULL +3 5 NULL NULL NULL NULL +4 7 NULL NULL NULL NULL +5 5 NULL NULL NULL NULL +6 NULL NULL NULL NULL NULL +7 NULL NULL NULL NULL NULL +8 9 NULL NULL NULL NULL +DROP TABLE t1, t2, t3; +End of 5.0 tests +CREATE TABLE t5 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b)); +CREATE TABLE t6 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b)); +CREATE TABLE t7 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b)); +CREATE TABLE t8 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b)); +INSERT INTO t5 VALUES (1,1,0), (2,2,0), (3,3,0); +INSERT INTO t6 VALUES (1,2,0), (3,2,0), (6,1,0); +INSERT INTO t7 VALUES (1,1,0), (2,2,0); +INSERT INTO t8 VALUES (0,2,0), (1,2,0); +EXPLAIN +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b AND +(t8.a > 0 OR t8.c IS NULL); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t5 ALL NULL NULL NULL NULL 3 +1 SIMPLE t7 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t6 ALL b_i NULL NULL NULL 3 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE t8 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 +LEFT JOIN +( +(t6, t7) +LEFT JOIN +t8 +ON t7.b=t8.b AND t6.b < 10 +) +ON t6.b >= 2 AND t5.b=t7.b AND +(t8.a > 0 OR t8.c IS NULL); +a b a b a b a b +2 2 1 2 2 2 1 2 +2 2 3 2 2 2 1 2 +1 1 1 2 1 1 NULL NULL +1 1 3 2 1 1 NULL NULL +3 3 NULL NULL NULL NULL NULL NULL +DELETE FROM t5; +DELETE FROM t6; +DELETE FROM t7; +DELETE FROM t8; +INSERT INTO t5 VALUES (1,3,0), (3,2,0); +INSERT INTO t6 VALUES (3,3,0); +INSERT INTO t7 VALUES (1,2,0); +INSERT INTO t8 VALUES (1,1,0); +EXPLAIN +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t6 LEFT JOIN t7 ON t7.a=1, t8) +ON (t5.b=t8.b); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 +1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) +1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join) +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t6 LEFT JOIN t7 ON t7.a=1, t8) +ON (t5.b=t8.b); +a b a b a b a b +1 3 NULL NULL NULL NULL NULL NULL +3 2 NULL NULL NULL NULL NULL NULL +EXPLAIN +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t6 LEFT JOIN t7 ON t7.b=2, t8) +ON (t5.b=t8.b); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 +1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) +1 SIMPLE t7 ref b_i b_i 5 const 0 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join) +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t6 LEFT JOIN t7 ON t7.b=2, t8) +ON (t5.b=t8.b); +a b a b a b a b +1 3 NULL NULL NULL NULL NULL NULL +3 2 NULL NULL NULL NULL NULL NULL +EXPLAIN +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t8, t6 LEFT JOIN t7 ON t7.a=1) +ON (t5.b=t8.b); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 +1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (incremental, BNL join) +1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b +FROM t5 LEFT JOIN +(t8, t6 LEFT JOIN t7 ON t7.a=1) +ON (t5.b=t8.b); +a b a b a b a b +1 3 NULL NULL NULL NULL NULL NULL +3 2 NULL NULL NULL NULL NULL NULL +DROP TABLE t5,t6,t7,t8; +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; diff --git a/mysql-test/r/join_outer.result b/mysql-test/r/join_outer.result index aafb5dd8635..c1171570dca 100644 --- a/mysql-test/r/join_outer.result +++ b/mysql-test/r/join_outer.result @@ -416,10 +416,10 @@ n m o n m o select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and t1.m = t2.m where t1.n = 1 order by t1.o; n m o n m o +1 2 11 1 2 3 1 2 7 1 2 3 1 2 9 1 2 3 1 3 9 NULL NULL NULL -1 2 11 1 2 3 drop table t1,t2; CREATE TABLE t1 (id1 INT NOT NULL PRIMARY KEY, dat1 CHAR(1), id2 INT); INSERT INTO t1 VALUES (1,'a',1); @@ -630,7 +630,7 @@ insert into t2 values (10,1),(20,2),(30,3); explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index NULL PRIMARY 4 NULL 3 Using index -1 SIMPLE t1 const PRIMARY PRIMARY 2 const 1 Using index +1 SIMPLE t1 const PRIMARY PRIMARY 2 const 1 Using where; Using index select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; fooID barID fooID 10 1 NULL @@ -688,8 +688,8 @@ a1 a2 b1 b2 c1 c2 explain select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 -1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where drop table t1, t2, t3; create table t1 ( a int(11), @@ -859,14 +859,14 @@ a1 a2 EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON a1=0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; a1 a2 a3 1 NULL NULL EXPLAIN SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; a0 a1 a2 a3 @@ -875,7 +875,7 @@ EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 system PRIMARY NULL NULL NULL 1 1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 INSERT INTO t0 VALUES (0); INSERT INTO t1 VALUES (0); @@ -886,7 +886,7 @@ EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 const PRIMARY PRIMARY 4 const 1 Using index 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 drop table t1,t2; create table t1 (a int, b int); @@ -1268,7 +1268,7 @@ FROM t1 LEFT JOIN t2 USING( a ) GROUP BY t1.a WITH ROLLUP; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 Using temporary; Using filesort -1 SIMPLE t2 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) FROM t1 LEFT JOIN t2 USING( a ) GROUP BY t1.a WITH ROLLUP; @@ -1302,7 +1302,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 1 SIMPLE t2 system NULL NULL NULL NULL 1 100.00 Warnings: -Note 1003 select '1' AS `f1`,NULL AS `f2`,'3' AS `f3`,NULL AS `f1`,NULL AS `f2` from `test`.`t1` left join `test`.`t2` on(multiple equal(NULL)) where ((coalesce('1',NULL),'3') in ((1,3),(2,2))) +Note 1003 select '1' AS `f1`,NULL AS `f2`,'3' AS `f3`,NULL AS `f1`,NULL AS `f2` from `test`.`t1` left join `test`.`t2` on(0) where ((coalesce('1',NULL),'3') in ((1,3),(2,2))) SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2 WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); f1 f2 f3 f1 f2 @@ -1328,14 +1328,14 @@ RIGHT OUTER JOIN t1 tt1 ON 1 STRAIGHT_JOIN t1 tt9 ON 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE tt1 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt2 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt3 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt4 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt5 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt6 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt7 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt8 ALL NULL NULL NULL NULL 2 -1 SIMPLE tt9 ALL NULL NULL NULL NULL 2 Using join buffer +1 SIMPLE tt2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt3 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt4 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt5 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt6 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt7 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt8 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE tt9 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SET optimizer_search_depth = DEFAULT; DROP TABLE t1; # @@ -1354,8 +1354,8 @@ EXPLAIN SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1 RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE TA2 ALL NULL NULL NULL NULL 20 Using where -1 SIMPLE TA3 ALL NULL NULL NULL NULL 20 Using join buffer -1 SIMPLE TA1 ALL NULL NULL NULL NULL 2 +1 SIMPLE TA3 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +1 SIMPLE TA1 ALL NULL NULL NULL NULL 2 Using where DROP TABLE t1, t2; # # Bug#48971 Segfault in add_found_match_trig_cond () at sql_select.cc:5990 @@ -1372,11 +1372,11 @@ RIGHT JOIN t1 AS jt6 ON jt6.f1 ON 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index 1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index Warnings: Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt1` left join (`test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1))) on(1) where 1 EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1 @@ -1389,11 +1389,11 @@ RIGHT JOIN t1 AS jt6 ON jt6.f1 ON 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index 1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using index -1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index +1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index Warnings: Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1)) left join `test`.`t1` `jt1` on(1) where 1 DROP TABLE t1; @@ -1438,7 +1438,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index Warnings: Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`pk` AS `pk`,(select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk` +Note 1003 select `test`.`t2`.`pk` AS `pk`,<expr_cache><`test`.`t2`.`pk`>((select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1)) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk` select t2.pk, (select t3.pk+if(isnull(t4.pk),0,t4.pk) from t3 left join t4 on t4.pk=t3.pk @@ -1508,6 +1508,7 @@ Handler_read_prev 0 Handler_read_rnd 0 Handler_read_rnd_next 1048581 drop table t1,t2,t3; +# # Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field # CREATE TABLE t1 (f1 INT NOT NULL, PRIMARY KEY (f1)); diff --git a/mysql-test/r/join_outer_innodb.result b/mysql-test/r/join_outer_innodb.result index e8a2d6f668b..56e557ec881 100644 --- a/mysql-test/r/join_outer_innodb.result +++ b/mysql-test/r/join_outer_innodb.result @@ -9,7 +9,7 @@ SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id WHERE t1.name LIKE 'A%'; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index PRIMARY,name name 23 NULL 3 Using where; Using index -1 SIMPLE t2 ref fkey fkey 5 test.t1.id 1 Using where; Using index +1 SIMPLE t2 ref fkey fkey 5 test.t1.id 1 Using index EXPLAIN SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id WHERE t1.name LIKE 'A%' OR FALSE; diff --git a/mysql-test/r/join_outer_jcl6.result b/mysql-test/r/join_outer_jcl6.result new file mode 100644 index 00000000000..5b679b9b083 --- /dev/null +++ b/mysql-test/r/join_outer_jcl6.result @@ -0,0 +1,1553 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +drop table if exists t0,t1,t2,t3,t4,t5; +CREATE TABLE t1 ( +grp int(11) default NULL, +a bigint(20) unsigned default NULL, +c char(10) NOT NULL default '' +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,1,'a'),(2,2,'b'),(2,3,'c'),(3,4,'E'),(3,5,'C'),(3,6,'D'),(NULL,NULL,''); +create table t2 (id int, a bigint unsigned not null, c char(10), d int, primary key (a)); +insert into t2 values (1,1,"a",1),(3,4,"A",4),(3,5,"B",5),(3,6,"C",6),(4,7,"D",7); +select t1.*,t2.* from t1 JOIN t2 where t1.a=t2.a; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) order by t1.grp,t1.a,t2.c; +grp a c id a c d +NULL NULL NULL NULL NULL NULL +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from { oj t2 left outer join t1 on (t1.a=t2.a) }; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +NULL NULL NULL 4 7 D 7 +select t1.*,t2.* from t1 as t0,{ oj t2 left outer join t1 on (t1.a=t2.a) } WHERE t0.a=2; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +NULL NULL NULL 4 7 D 7 +select t1.*,t2.* from t1 left join t2 using (a); +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 using (a) where t1.a=t2.a; +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 using (a,c); +grp a c id a c d +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E NULL NULL NULL NULL +3 5 C NULL NULL NULL NULL +3 6 D NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 using (c); +grp a c id a c d +1 1 a 1 1 a 1 +1 1 a 3 4 A 4 +2 2 b 3 5 B 5 +2 3 c 3 6 C 6 +3 5 C 3 6 C 6 +3 6 D 4 7 D 7 +3 4 E NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 natural left outer join t2; +grp a c id a c d +1 1 a 1 1 a 1 +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +3 4 E NULL NULL NULL NULL +3 5 C NULL NULL NULL NULL +3 6 D NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id=3; +grp a c id a c d +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id is null; +grp a c id a c d +2 2 b NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL +explain select t1.*,t2.* from t1,t2 where t1.a=t2.a and isnull(t2.a)=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a); +grp a c id a c d a +1 1 a 1 1 a 1 1 +3 4 E 3 4 A 4 4 +3 5 C 3 5 B 5 5 +3 6 D 3 6 C 6 6 +2 2 b NULL NULL NULL NULL NULL +2 3 c NULL NULL NULL NULL NULL +NULL NULL NULL NULL NULL NULL NULL +explain select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t2.a=t3.a); +ERROR 42S22: Unknown column 't3.a' in 'on clause' +select t1.*,t2.* from t1 inner join t2 using (a); +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 inner join t2 on (t1.a=t2.a); +grp a c id a c d +1 1 a 1 1 a 1 +3 4 E 3 4 A 4 +3 5 C 3 5 B 5 +3 6 D 3 6 C 6 +select t1.*,t2.* from t1 natural join t2; +grp a c id a c d +1 1 a 1 1 a 1 +drop table t1,t2; +CREATE TABLE t1 ( +usr_id INT unsigned NOT NULL, +uniq_id INT unsigned NOT NULL AUTO_INCREMENT, +start_num INT unsigned NOT NULL DEFAULT 1, +increment INT unsigned NOT NULL DEFAULT 1, +PRIMARY KEY (uniq_id), +INDEX usr_uniq_idx (usr_id, uniq_id), +INDEX uniq_usr_idx (uniq_id, usr_id) +); +CREATE TABLE t2 ( +id INT unsigned NOT NULL DEFAULT 0, +usr2_id INT unsigned NOT NULL DEFAULT 0, +max INT unsigned NOT NULL DEFAULT 0, +c_amount INT unsigned NOT NULL DEFAULT 0, +d_max INT unsigned NOT NULL DEFAULT 0, +d_num INT unsigned NOT NULL DEFAULT 0, +orig_time INT unsigned NOT NULL DEFAULT 0, +c_time INT unsigned NOT NULL DEFAULT 0, +active ENUM ("no","yes") NOT NULL, +PRIMARY KEY (id,usr2_id), +INDEX id_idx (id), +INDEX usr2_idx (usr2_id) +); +INSERT INTO t1 VALUES (3,NULL,0,50),(3,NULL,0,200),(3,NULL,0,25),(3,NULL,0,84676),(3,NULL,0,235),(3,NULL,0,10),(3,NULL,0,3098),(3,NULL,0,2947),(3,NULL,0,8987),(3,NULL,0,8347654),(3,NULL,0,20398),(3,NULL,0,8976),(3,NULL,0,500),(3,NULL,0,198); +SELECT t1.usr_id,t1.uniq_id,t1.increment, +t2.usr2_id,t2.c_amount,t2.max +FROM t1 +LEFT JOIN t2 ON t2.id = t1.uniq_id +WHERE t1.uniq_id = 4 +ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment, +t2.usr2_id,t2.c_amount,t2.max +FROM t2 +RIGHT JOIN t1 ON t2.id = t1.uniq_id +WHERE t1.uniq_id = 4 +ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes'); +INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes'); +ERROR 23000: Duplicate entry '2-3' for key 'PRIMARY' +INSERT INTO t2 VALUES (7,3,1000,2000,0,0,746294,937484,'yes'); +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 ORDER BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 GROUP BY t2.c_amount; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4; +usr_id uniq_id increment usr2_id c_amount max +3 4 84676 NULL NULL NULL +drop table t1,t2; +CREATE TABLE t1 ( +cod_asig int(11) DEFAULT '0' NOT NULL, +desc_larga_cat varchar(80) DEFAULT '' NOT NULL, +desc_larga_cas varchar(80) DEFAULT '' NOT NULL, +desc_corta_cat varchar(40) DEFAULT '' NOT NULL, +desc_corta_cas varchar(40) DEFAULT '' NOT NULL, +cred_total double(3,1) DEFAULT '0.0' NOT NULL, +pre_requisit int(11), +co_requisit int(11), +preco_requisit int(11), +PRIMARY KEY (cod_asig) +); +INSERT INTO t1 VALUES (10360,'asdfggfg','Introduccion a los Ordenadores I','asdfggfg','Introduccio Ordinadors I',6.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10361,'Components i Circuits Electronics I','Componentes y Circuitos Electronicos I','Components i Circuits Electronics I','Comp. i Circ. Electr. I',6.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10362,'Laboratori d`Ordinadors','Laboratorio de Ordenadores','Laboratori d`Ordinadors','Laboratori Ordinadors',4.5,NULL,NULL,NULL); +INSERT INTO t1 VALUES (10363,'Tecniques de Comunicacio Oral i Escrita','Tecnicas de Comunicacion Oral y Escrita','Tecniques de Comunicacio Oral i Escrita','Tec. Com. Oral i Escrita',4.5,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11403,'Projecte Fi de Carrera','Proyecto Fin de Carrera','Projecte Fi de Carrera','PFC',9.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11404,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',15.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11405,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',18.0,NULL,NULL,NULL); +INSERT INTO t1 VALUES (11406,'Calcul Infinitesimal','Cßlculo Infinitesimal','Calcul Infinitesimal','Calcul Infinitesimal',15.0,NULL,NULL,NULL); +CREATE TABLE t2 ( +idAssignatura int(11) DEFAULT '0' NOT NULL, +Grup int(11) DEFAULT '0' NOT NULL, +Places smallint(6) DEFAULT '0' NOT NULL, +PlacesOcupades int(11) DEFAULT '0', +PRIMARY KEY (idAssignatura,Grup) +); +INSERT INTO t2 VALUES (10360,12,333,0); +INSERT INTO t2 VALUES (10361,30,2,0); +INSERT INTO t2 VALUES (10361,40,3,0); +INSERT INTO t2 VALUES (10360,45,10,0); +INSERT INTO t2 VALUES (10362,10,12,0); +INSERT INTO t2 VALUES (10360,55,2,0); +INSERT INTO t2 VALUES (10360,70,0,0); +INSERT INTO t2 VALUES (10360,565656,0,0); +INSERT INTO t2 VALUES (10360,32767,7,0); +INSERT INTO t2 VALUES (10360,33,8,0); +INSERT INTO t2 VALUES (10360,7887,85,0); +INSERT INTO t2 VALUES (11405,88,8,0); +INSERT INTO t2 VALUES (10360,0,55,0); +INSERT INTO t2 VALUES (10360,99,0,0); +INSERT INTO t2 VALUES (11411,30,10,0); +INSERT INTO t2 VALUES (11404,0,0,0); +INSERT INTO t2 VALUES (10362,11,111,0); +INSERT INTO t2 VALUES (10363,33,333,0); +INSERT INTO t2 VALUES (11412,55,0,0); +INSERT INTO t2 VALUES (50003,66,6,0); +INSERT INTO t2 VALUES (11403,5,0,0); +INSERT INTO t2 VALUES (11406,11,11,0); +INSERT INTO t2 VALUES (11410,11410,131,0); +INSERT INTO t2 VALUES (11416,11416,32767,0); +INSERT INTO t2 VALUES (11409,0,0,0); +CREATE TABLE t3 ( +id int(11) NOT NULL auto_increment, +dni_pasaporte char(16) DEFAULT '' NOT NULL, +idPla int(11) DEFAULT '0' NOT NULL, +cod_asig int(11) DEFAULT '0' NOT NULL, +any smallint(6) DEFAULT '0' NOT NULL, +quatrimestre smallint(6) DEFAULT '0' NOT NULL, +estat char(1) DEFAULT 'M' NOT NULL, +PRIMARY KEY (id), +UNIQUE dni_pasaporte (dni_pasaporte,idPla), +UNIQUE dni_pasaporte_2 (dni_pasaporte,idPla,cod_asig,any,quatrimestre) +); +INSERT INTO t3 VALUES (1,'11111111',1,10362,98,1,'M'); +CREATE TABLE t4 ( +id int(11) NOT NULL auto_increment, +papa int(11) DEFAULT '0' NOT NULL, +fill int(11) DEFAULT '0' NOT NULL, +idPla int(11) DEFAULT '0' NOT NULL, +PRIMARY KEY (id), +KEY papa (idPla,papa), +UNIQUE papa_2 (idPla,papa,fill) +); +INSERT INTO t4 VALUES (1,-1,10360,1); +INSERT INTO t4 VALUES (2,-1,10361,1); +INSERT INTO t4 VALUES (3,-1,10362,1); +SELECT DISTINCT fill,desc_larga_cat,cred_total,Grup,Places,PlacesOcupades FROM t4 LEFT JOIN t3 ON t3.cod_asig=fill AND estat='S' AND dni_pasaporte='11111111' AND t3.idPla=1 , t2,t1 WHERE fill=t1.cod_asig AND Places>PlacesOcupades AND fill=idAssignatura AND t4.idPla=1 AND papa=-1; +fill desc_larga_cat cred_total Grup Places PlacesOcupades +10360 asdfggfg 6.0 12 333 0 +10361 Components i Circuits Electronics I 6.0 30 2 0 +10361 Components i Circuits Electronics I 6.0 40 3 0 +10360 asdfggfg 6.0 45 10 0 +10362 Laboratori d`Ordinadors 4.5 10 12 0 +10360 asdfggfg 6.0 55 2 0 +10360 asdfggfg 6.0 32767 7 0 +10360 asdfggfg 6.0 33 8 0 +10360 asdfggfg 6.0 7887 85 0 +10360 asdfggfg 6.0 0 55 0 +10362 Laboratori d`Ordinadors 4.5 11 111 0 +SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ; +fill idPla +10360 NULL +10361 NULL +10362 NULL +INSERT INTO t3 VALUES (3,'1234',1,10360,98,1,'S'); +SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ; +fill idPla +10360 1 +10361 NULL +10362 NULL +drop table t1,t2,t3,test.t4; +CREATE TABLE t1 ( +id smallint(5) unsigned NOT NULL auto_increment, +name char(60) DEFAULT '' NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES (1,'Antonio Paz'); +INSERT INTO t1 VALUES (2,'Lilliana Angelovska'); +INSERT INTO t1 VALUES (3,'Thimble Smith'); +CREATE TABLE t2 ( +id smallint(5) unsigned NOT NULL auto_increment, +owner smallint(5) unsigned DEFAULT '0' NOT NULL, +name char(60), +PRIMARY KEY (id) +); +INSERT INTO t2 VALUES (1,1,'El Gato'); +INSERT INTO t2 VALUES (2,1,'Perrito'); +INSERT INTO t2 VALUES (3,3,'Happy'); +select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner); +name name id +Antonio Paz El Gato 1 +Antonio Paz Perrito 2 +Thimble Smith Happy 3 +Lilliana Angelovska NULL NULL +select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null; +name name id +Lilliana Angelovska NULL NULL +explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) +explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Using join buffer (flat, BNLH join) +select count(*) from t1 left join t2 on (t1.id = t2.owner); +count(*) +4 +select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner); +name name id +Antonio Paz El Gato 1 +Antonio Paz Perrito 2 +Thimble Smith Happy 3 +Lilliana Angelovska NULL NULL +select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null; +name name id +Lilliana Angelovska NULL NULL +explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) +explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Using join buffer (flat, BNLH join) +select count(*) from t2 right join t1 on (t1.id = t2.owner); +count(*) +4 +select t1.name, t2.name, t2.id,t3.id from t2 right join t1 on (t1.id = t2.owner) left join t1 as t3 on t3.id=t2.owner; +name name id id +Antonio Paz El Gato 1 1 +Antonio Paz Perrito 2 1 +Thimble Smith Happy 3 3 +Lilliana Angelovska NULL NULL NULL +select t1.name, t2.name, t2.id,t3.id from t1 right join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner; +name name id id +Antonio Paz El Gato 1 1 +Antonio Paz Perrito 2 1 +Thimble Smith Happy 3 3 +NULL NULL NULL 2 +select t1.name, t2.name, t2.id, t2.owner, t3.id from t1 left join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner; +name name id owner id +Antonio Paz El Gato 1 1 1 +Antonio Paz Perrito 2 1 1 +Thimble Smith Happy 3 3 3 +NULL NULL NULL NULL 2 +drop table t1,t2; +create table t1 (id int not null, str char(10), index(str)); +insert into t1 values (1, null), (2, null), (3, "foo"), (4, "bar"); +select * from t1 where str is not null order by id; +id str +3 foo +4 bar +select * from t1 where str is null; +id str +1 NULL +2 NULL +drop table t1; +CREATE TABLE t1 ( +t1_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t1_id) +); +CREATE TABLE t2 ( +t2_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t2_id) +); +CREATE TABLE t3 ( +t3_id bigint(21) NOT NULL auto_increment, +PRIMARY KEY (t3_id) +); +CREATE TABLE t4 ( +seq_0_id bigint(21) DEFAULT '0' NOT NULL, +seq_1_id bigint(21) DEFAULT '0' NOT NULL, +KEY seq_0_id (seq_0_id), +KEY seq_1_id (seq_1_id) +); +CREATE TABLE t5 ( +seq_0_id bigint(21) DEFAULT '0' NOT NULL, +seq_1_id bigint(21) DEFAULT '0' NOT NULL, +KEY seq_1_id (seq_1_id), +KEY seq_0_id (seq_0_id) +); +insert into t1 values (1); +insert into t2 values (1); +insert into t3 values (1); +insert into t4 values (1,1); +insert into t5 values (1,1); +explain select * from t3 left join t4 on t4.seq_1_id = t2.t2_id left join t1 on t1.t1_id = t4.seq_0_id left join t5 on t5.seq_0_id = t1.t1_id left join t2 on t2.t2_id = t5.seq_1_id where t3.t3_id = 23; +ERROR 42S22: Unknown column 't2.t2_id' in 'on clause' +drop table t1,t2,t3,t4,t5; +create table t1 (n int, m int, o int, key(n)); +create table t2 (n int not null, m int, o int, primary key(n)); +insert into t1 values (1, 2, 11), (1, 2, 7), (2, 2, 8), (1,2,9),(1,3,9); +insert into t2 values (1, 2, 3),(2, 2, 8), (4,3,9),(3,2,10); +select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and +t1.m = t2.m where t1.n = 1; +n m o n m o +1 2 11 1 2 3 +1 2 7 1 2 3 +1 2 9 1 2 3 +1 3 9 NULL NULL NULL +select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and +t1.m = t2.m where t1.n = 1 order by t1.o; +n m o n m o +1 2 11 1 2 3 +1 2 7 1 2 3 +1 2 9 1 2 3 +1 3 9 NULL NULL NULL +drop table t1,t2; +CREATE TABLE t1 (id1 INT NOT NULL PRIMARY KEY, dat1 CHAR(1), id2 INT); +INSERT INTO t1 VALUES (1,'a',1); +INSERT INTO t1 VALUES (2,'b',1); +INSERT INTO t1 VALUES (3,'c',2); +CREATE TABLE t2 (id2 INT NOT NULL PRIMARY KEY, dat2 CHAR(1)); +INSERT INTO t2 VALUES (1,'x'); +INSERT INTO t2 VALUES (2,'y'); +INSERT INTO t2 VALUES (3,'z'); +SELECT t2.id2 FROM t2 LEFT OUTER JOIN t1 ON t1.id2 = t2.id2 WHERE id1 IS NULL; +id2 +3 +SELECT t2.id2 FROM t2 NATURAL LEFT OUTER JOIN t1 WHERE id1 IS NULL; +id2 +3 +drop table t1,t2; +create table t1 ( color varchar(20), name varchar(20) ); +insert into t1 values ( 'red', 'apple' ); +insert into t1 values ( 'yellow', 'banana' ); +insert into t1 values ( 'green', 'lime' ); +insert into t1 values ( 'black', 'grape' ); +insert into t1 values ( 'blue', 'blueberry' ); +create table t2 ( count int, color varchar(20) ); +insert into t2 values (10, 'green'); +insert into t2 values (5, 'black'); +insert into t2 values (15, 'white'); +insert into t2 values (7, 'green'); +select * from t1; +color name +red apple +yellow banana +green lime +black grape +blue blueberry +select * from t2; +count color +10 green +5 black +15 white +7 green +select * from t2 natural join t1; +color count name +green 10 lime +green 7 lime +black 5 grape +select t2.count, t1.name from t2 natural join t1; +count name +10 lime +7 lime +5 grape +select t2.count, t1.name from t2 inner join t1 using (color); +count name +10 lime +7 lime +5 grape +drop table t1; +drop table t2; +CREATE TABLE t1 ( +pcode varchar(8) DEFAULT '' NOT NULL +); +INSERT INTO t1 VALUES ('kvw2000'),('kvw2001'),('kvw3000'),('kvw3001'),('kvw3002'),('kvw3500'),('kvw3501'),('kvw3502'),('kvw3800'),('kvw3801'),('kvw3802'),('kvw3900'),('kvw3901'),('kvw3902'),('kvw4000'),('kvw4001'),('kvw4002'),('kvw4200'),('kvw4500'),('kvw5000'),('kvw5001'),('kvw5500'),('kvw5510'),('kvw5600'),('kvw5601'),('kvw6000'),('klw1000'),('klw1020'),('klw1500'),('klw2000'),('klw2001'),('klw2002'),('kld2000'),('klw2500'),('kmw1000'),('kmw1500'),('kmw2000'),('kmw2001'),('kmw2100'),('kmw3000'),('kmw3200'); +CREATE TABLE t2 ( +pcode varchar(8) DEFAULT '' NOT NULL, +KEY pcode (pcode) +); +INSERT INTO t2 VALUES ('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw6000'),('kvw6000'),('kld2000'); +SELECT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 +LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode; +pcode count +kld2000 1 +klw1000 0 +klw1020 0 +klw1500 0 +klw2000 0 +klw2001 0 +klw2002 0 +klw2500 0 +kmw1000 0 +kmw1500 0 +kmw2000 0 +kmw2001 0 +kmw2100 0 +kmw3000 0 +kmw3200 0 +kvw2000 26 +kvw2001 0 +kvw3000 36 +kvw3001 0 +kvw3002 0 +kvw3500 26 +kvw3501 0 +kvw3502 0 +kvw3800 0 +kvw3801 0 +kvw3802 0 +kvw3900 0 +kvw3901 0 +kvw3902 0 +kvw4000 0 +kvw4001 0 +kvw4002 0 +kvw4200 0 +kvw4500 0 +kvw5000 0 +kvw5001 0 +kvw5500 0 +kvw5510 0 +kvw5600 0 +kvw5601 0 +kvw6000 2 +SELECT SQL_BIG_RESULT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode; +pcode count +kld2000 1 +klw1000 0 +klw1020 0 +klw1500 0 +klw2000 0 +klw2001 0 +klw2002 0 +klw2500 0 +kmw1000 0 +kmw1500 0 +kmw2000 0 +kmw2001 0 +kmw2100 0 +kmw3000 0 +kmw3200 0 +kvw2000 26 +kvw2001 0 +kvw3000 36 +kvw3001 0 +kvw3002 0 +kvw3500 26 +kvw3501 0 +kvw3502 0 +kvw3800 0 +kvw3801 0 +kvw3802 0 +kvw3900 0 +kvw3901 0 +kvw3902 0 +kvw4000 0 +kvw4001 0 +kvw4002 0 +kvw4200 0 +kvw4500 0 +kvw5000 0 +kvw5001 0 +kvw5500 0 +kvw5510 0 +kvw5600 0 +kvw5601 0 +kvw6000 2 +drop table t1,t2; +CREATE TABLE t1 ( +id int(11), +pid int(11), +rep_del tinyint(4), +KEY id (id), +KEY pid (pid) +); +INSERT INTO t1 VALUES (1,NULL,NULL); +INSERT INTO t1 VALUES (2,1,NULL); +select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL; +id pid rep_del id pid rep_del +1 NULL NULL 2 1 NULL +2 1 NULL NULL NULL NULL +create index rep_del ON t1(rep_del); +select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL; +id pid rep_del id pid rep_del +1 NULL NULL 2 1 NULL +2 1 NULL NULL NULL NULL +drop table t1; +CREATE TABLE t1 ( +id int(11) DEFAULT '0' NOT NULL, +name tinytext DEFAULT '' NOT NULL, +UNIQUE id (id) +); +Warnings: +Warning 1101 BLOB/TEXT column 'name' can't have a default value +INSERT INTO t1 VALUES (1,'yes'),(2,'no'); +CREATE TABLE t2 ( +id int(11) DEFAULT '0' NOT NULL, +idx int(11) DEFAULT '0' NOT NULL, +UNIQUE id (id,idx) +); +INSERT INTO t2 VALUES (1,1); +explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ref id id 4 test.t1.id 1 Using where; Using index; Not exists +SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL; +id name id idx +2 no NULL NULL +drop table t1,t2; +create table t1 (bug_id mediumint, reporter mediumint); +create table t2 (bug_id mediumint, who mediumint, index(who)); +insert into t2 values (1,1),(1,2); +insert into t1 values (1,1),(2,1); +SELECT * FROM t1 LEFT JOIN t2 ON (t1.bug_id = t2.bug_id AND t2.who = 2) WHERE (t1.reporter = 2 OR t2.who = 2); +bug_id reporter bug_id who +1 1 1 2 +drop table t1,t2; +create table t1 (fooID smallint unsigned auto_increment, primary key (fooID)); +create table t2 (fooID smallint unsigned not null, barID smallint unsigned not null, primary key (fooID,barID)); +insert into t1 (fooID) values (10),(20),(30); +insert into t2 values (10,1),(20,2),(30,3); +explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index NULL PRIMARY 4 NULL 3 Using index +1 SIMPLE t1 const PRIMARY PRIMARY 2 const 1 Using where; Using index +select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30; +fooID barID fooID +10 1 NULL +20 2 NULL +30 3 30 +select * from t2 left join t1 ignore index(primary) on t1.fooID = t2.fooID and t1.fooID = 30; +fooID barID fooID +30 3 30 +10 1 NULL +20 2 NULL +drop table t1,t2; +create table t1 (i int); +create table t2 (i int); +create table t3 (i int); +insert into t1 values(1),(2); +insert into t2 values(2),(3); +insert into t3 values(2),(4); +select * from t1 natural left join t2 natural left join t3; +i +2 +1 +select * from t1 natural left join t2 where (t2.i is not null)=0; +i +1 +select * from t1 natural left join t2 where (t2.i is not null) is not null; +i +2 +1 +select * from t1 natural left join t2 where (i is not null)=0; +i +select * from t1 natural left join t2 where (i is not null) is not null; +i +2 +1 +drop table t1,t2,t3; +create table t1 (f1 integer,f2 integer,f3 integer); +create table t2 (f2 integer,f4 integer); +create table t3 (f3 integer,f5 integer); +select * from t1 +left outer join t2 using (f2) +left outer join t3 using (f3); +f3 f2 f1 f4 f5 +drop table t1,t2,t3; +create table t1 (a1 int, a2 int); +create table t2 (b1 int not null, b2 int); +create table t3 (c1 int, c2 int); +insert into t1 values (1,2), (2,2), (3,2); +insert into t2 values (1,3), (2,3); +insert into t3 values (2,4), (3,4); +select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +a1 a2 b1 b2 c1 c2 +1 2 1 3 NULL NULL +2 2 2 3 NULL NULL +3 2 NULL NULL 3 4 +explain select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 4 test.t1.a1 2 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE t3 hash_ALL NULL #hash#$hj 5 test.t1.a1 2 Using where; Using join buffer (incremental, BNLH join) +drop table t1, t2, t3; +create table t1 ( +a int(11), +b char(10), +key (a) +); +insert into t1 (a) values (1),(2),(3),(4); +create table t2 (a int); +select * from t1 left join t2 on t1.a=t2.a where not (t2.a <=> t1.a); +a b a +1 NULL NULL +2 NULL NULL +3 NULL NULL +4 NULL NULL +select * from t1 left join t2 on t1.a=t2.a having not (t2.a <=> t1.a); +a b a +1 NULL NULL +2 NULL NULL +3 NULL NULL +4 NULL NULL +drop table t1,t2; +create table t1 ( +match_id tinyint(3) unsigned not null auto_increment, +home tinyint(3) unsigned default '0', +unique key match_id (match_id), +key match_id_2 (match_id) +); +insert into t1 values("1", "2"); +create table t2 ( +player_id tinyint(3) unsigned default '0', +match_1_h tinyint(3) unsigned default '0', +key player_id (player_id) +); +insert into t2 values("1", "5"); +insert into t2 values("2", "9"); +insert into t2 values("3", "3"); +insert into t2 values("4", "7"); +insert into t2 values("5", "6"); +insert into t2 values("6", "8"); +insert into t2 values("7", "4"); +insert into t2 values("8", "12"); +insert into t2 values("9", "11"); +insert into t2 values("10", "10"); +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by m.match_id desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by UUX desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +(t2 s left join t1 m on m.match_id = 1) +order by UUX desc; +player_id match_1_h * match_id home UUX +8 12 * 1 2 10 +9 11 * 1 2 9 +10 10 * 1 2 8 +2 9 * 1 2 7 +6 8 * 1 2 6 +4 7 * 1 2 5 +5 6 * 1 2 4 +1 5 * 1 2 3 +7 4 * 1 2 2 +3 3 * 1 2 1 +explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +t2 s straight_join t1 m where m.match_id = 1 +order by UUX desc; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort +1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select s.*, '*', m.*, (s.match_1_h - m.home) UUX from +t2 s straight_join t1 m where m.match_id = 1 +order by UUX desc; +player_id match_1_h * match_id home UUX +8 12 * 1 2 10 +9 11 * 1 2 9 +10 10 * 1 2 8 +2 9 * 1 2 7 +6 8 * 1 2 6 +4 7 * 1 2 5 +5 6 * 1 2 4 +1 5 * 1 2 3 +7 4 * 1 2 2 +3 3 * 1 2 1 +drop table t1, t2; +create table t1 (a int, b int, unique index idx (a, b)); +create table t2 (a int, b int, c int, unique index idx (a, b)); +insert into t1 values (1, 10), (1,11), (2,10), (2,11); +insert into t2 values (1,10,3); +select t1.a, t1.b, t2.c from t1 left join t2 +on t1.a=t2.a and t1.b=t2.b and t2.c=3 +where t1.a=1 and t2.c is null; +a b c +1 11 NULL +drop table t1, t2; +CREATE TABLE t1 ( +ts_id bigint(20) default NULL, +inst_id tinyint(4) default NULL, +flag_name varchar(64) default NULL, +flag_value text, +UNIQUE KEY ts_id (ts_id,inst_id,flag_name) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +CREATE TABLE t2 ( +ts_id bigint(20) default NULL, +inst_id tinyint(4) default NULL, +flag_name varchar(64) default NULL, +flag_value text, +UNIQUE KEY ts_id (ts_id,inst_id,flag_name) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +INSERT INTO t1 VALUES +(111056548820001, 0, 'flag1', NULL), +(111056548820001, 0, 'flag2', NULL), +(2, 0, 'other_flag', NULL); +INSERT INTO t2 VALUES +(111056548820001, 3, 'flag1', 'sss'); +SELECT t1.flag_name,t2.flag_value +FROM t1 LEFT JOIN t2 +ON (t1.ts_id = t2.ts_id AND t1.flag_name = t2.flag_name AND +t2.inst_id = 3) +WHERE t1.inst_id = 0 AND t1.ts_id=111056548820001 AND +t2.flag_value IS NULL; +flag_name flag_value +flag2 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +id int(11) unsigned NOT NULL auto_increment, +text_id int(10) unsigned default NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES("1", "0"); +INSERT INTO t1 VALUES("2", "10"); +CREATE TABLE t2 ( +text_id char(3) NOT NULL default '', +language_id char(3) NOT NULL default '', +text_data text, +PRIMARY KEY (text_id,language_id) +); +INSERT INTO t2 VALUES("0", "EN", "0-EN"); +INSERT INTO t2 VALUES("0", "SV", "0-SV"); +INSERT INTO t2 VALUES("10", "EN", "10-EN"); +INSERT INTO t2 VALUES("10", "SV", "10-SV"); +SELECT t1.id, t1.text_id, t2.text_data +FROM t1 LEFT JOIN t2 +ON t1.text_id = t2.text_id +AND t2.language_id = 'SV' + WHERE (t1.id LIKE '%' OR t2.text_data LIKE '%'); +id text_id text_data +1 0 0-SV +2 10 10-SV +DROP TABLE t1, t2; +CREATE TABLE t0 (a0 int PRIMARY KEY); +CREATE TABLE t1 (a1 int PRIMARY KEY); +CREATE TABLE t2 (a2 int); +CREATE TABLE t3 (a3 int); +INSERT INTO t0 VALUES (1); +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1), (2); +INSERT INTO t3 VALUES (1), (2); +SELECT * FROM t1 LEFT JOIN t2 ON a1=0; +a1 a2 +1 NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON a1=0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; +a1 a2 a3 +1 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN (t2,t3) ON a1=0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; +a0 a1 a2 a3 +1 1 NULL NULL +EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=0 WHERE a0=a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +INSERT INTO t0 VALUES (0); +INSERT INTO t1 VALUES (0); +SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1; +a0 a1 a2 a3 +1 1 NULL NULL +EXPLAIN SELECT * FROM t0, t1 LEFT JOIN (t2,t3) ON a1=5 WHERE a0=a1 AND a0=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 +drop table t1,t2; +create table t1 (a int, b int); +insert into t1 values (1,1),(2,2),(3,3); +create table t2 (a int, b int); +insert into t2 values (1,1), (2,2); +select * from t2 right join t1 on t2.a=t1.a; +a b a b +1 1 1 1 +2 2 2 2 +NULL NULL 3 3 +select straight_join * from t2 right join t1 on t2.a=t1.a; +a b a b +1 1 1 1 +2 2 2 2 +NULL NULL 3 3 +DROP TABLE t0,t1,t2,t3; +CREATE TABLE t1 (a int PRIMARY KEY, b int); +CREATE TABLE t2 (a int PRIMARY KEY, b int); +INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (4,2); +INSERT INTO t2 VALUES (1,2), (2,2); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a; +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +4 2 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t1.b=1; +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a +WHERE t1.b=1 XOR (NOT ISNULL(t2.a) AND t2.b=1); +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE not(0+(t1.a=30 and t2.b=1)); +a b a b +1 1 1 2 +2 1 2 2 +3 1 NULL NULL +4 2 NULL NULL +DROP TABLE t1,t2; +set group_concat_max_len=5; +create table t1 (a int, b varchar(20)); +create table t2 (a int, c varchar(20)); +insert into t1 values (1,"aaaaaaaaaa"),(2,"bbbbbbbbbb"); +insert into t2 values (1,"cccccccccc"),(2,"dddddddddd"); +select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by t1.a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 2 line(s) were cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 2 line(s) were cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 2 line(s) were cut by GROUP_CONCAT() +select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by a; +group_concat(t1.b,t2.c) +aaaaa +bbbbb +Warnings: +Warning 1260 2 line(s) were cut by GROUP_CONCAT() +drop table t1, t2; +set group_concat_max_len=default; +create table t1 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, art int(11) not null, primary key (gid,x,y)); +insert t1 values (1, -5, -8, 2), (1, 2, 2, 1), (1, 1, 1, 1); +create table t2 (gid smallint(5) unsigned not null, x int(11) not null, y int(11) not null, id int(11) not null, primary key (gid,id,x,y), key id (id)); +insert t2 values (1, -5, -8, 1), (1, 1, 1, 1), (1, 2, 2, 1); +create table t3 ( set_id smallint(5) unsigned not null, id tinyint(4) unsigned not null, name char(12) not null, primary key (id,set_id)); +insert t3 values (0, 1, 'a'), (1, 1, 'b'), (0, 2, 'c'), (1, 2, 'd'), (1, 3, 'e'), (1, 4, 'f'), (1, 5, 'g'), (1, 6, 'h'); +explain select name from t1 left join t2 on t1.x = t2.x and t1.y = t2.y +left join t3 on t1.art = t3.id where t2.id =1 and t2.x = -5 and t2.y =-8 +and t1.gid =1 and t2.gid =1 and t3.set_id =1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 10 const,const,const 1 +1 SIMPLE t2 const PRIMARY,id PRIMARY 14 const,const,const,const 1 Using index +1 SIMPLE t3 const PRIMARY PRIMARY 3 const,const 1 +drop tables t1,t2,t3; +CREATE TABLE t1 (EMPNUM INT, GRP INT); +INSERT INTO t1 VALUES (0, 10); +INSERT INTO t1 VALUES (2, 30); +CREATE TABLE t2 (EMPNUM INT, NAME CHAR(5)); +INSERT INTO t2 VALUES (0, 'KERI'); +INSERT INTO t2 VALUES (9, 'BARRY'); +CREATE VIEW v1 AS +SELECT COALESCE(t2.EMPNUM,t1.EMPNUM) AS EMPNUM, NAME, GRP +FROM t2 LEFT OUTER JOIN t1 ON t2.EMPNUM=t1.EMPNUM; +SELECT * FROM v1; +EMPNUM NAME GRP +0 KERI 10 +9 BARRY NULL +SELECT * FROM v1 WHERE EMPNUM < 10; +EMPNUM NAME GRP +0 KERI 10 +9 BARRY NULL +DROP VIEW v1; +DROP TABLE t1,t2; +CREATE TABLE t1 (c11 int); +CREATE TABLE t2 (c21 int); +INSERT INTO t1 VALUES (30), (40), (50); +INSERT INTO t2 VALUES (300), (400), (500); +SELECT * FROM t1 LEFT JOIN t2 ON (c11=c21 AND c21=30) WHERE c11=40; +c11 c21 +40 NULL +DROP TABLE t1, t2; +CREATE TABLE t1 (a int PRIMARY KEY, b int); +CREATE TABLE t2 (a int PRIMARY KEY, b int); +INSERT INTO t1 VALUES (1,2), (2,1), (3,2), (4,3), (5,6), (6,5), (7,8), (8,7), (9,10); +INSERT INTO t2 VALUES (3,0), (4,1), (6,4), (7,5); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b <= t1.a AND t1.a <= t1.b; +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b; +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b); +a b a b +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +2 1 NULL NULL +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +2 1 NULL NULL +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +2 1 NULL NULL +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +2 1 NULL NULL +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +2 1 NULL NULL +8 7 NULL NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a OR t1.a BETWEEN t2.b AND t1.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b OR (t1.a != t2.a AND t1.a != t2.b); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b AND t1.a IN(t2.a, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b AND t1.a != t1.b AND t1.a != t2.b; +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b OR t1.a IN(t1.b, t2.b)); +a b a b +3 2 3 0 +4 3 4 1 +6 5 6 4 +7 8 7 5 +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1,t2; +DROP VIEW IF EXISTS v1,v2; +DROP TABLE IF EXISTS t1,t2; +CREATE TABLE t1 (a int); +CREATE table t2 (b int); +INSERT INTO t1 VALUES (1), (2), (3), (4), (1), (1), (3); +INSERT INTO t2 VALUES (2), (3); +CREATE VIEW v1 AS SELECT a FROM t1 JOIN t2 ON t1.a=t2.b; +CREATE VIEW v2 AS SELECT b FROM t2 JOIN t1 ON t2.b=t1.a; +SELECT v1.a, v2. b +FROM v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3) +GROUP BY v1.a; +a b +2 NULL +3 3 +SELECT v1.a, v2. b +FROM { OJ v1 LEFT OUTER JOIN v2 ON (v1.a=v2.b) AND (v1.a >= 3) } +GROUP BY v1.a; +a b +2 NULL +3 3 +DROP VIEW v1,v2; +DROP TABLE t1,t2; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (b int); +INSERT INTO t1 VALUES (1), (2), (3), (4); +INSERT INTO t2 VALUES (2), (3); +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1); +a b +2 2 +3 3 +1 NULL +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1 OR 1); +a b +2 2 +3 3 +1 NULL +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (0 OR 1); +a b +2 2 +3 3 +1 NULL +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 2=2); +a b +2 2 +3 3 +1 NULL +4 NULL +SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.b WHERE (1=1 OR 1=0); +a b +2 2 +3 3 +1 NULL +4 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY, +f2 varchar(16) collate latin1_swedish_ci +); +CREATE TABLE t2 ( +f1 varchar(16) collate latin1_swedish_ci PRIMARY KEY, +f3 varchar(16) collate latin1_swedish_ci +); +INSERT INTO t1 VALUES ('bla','blah'); +INSERT INTO t2 VALUES ('bla','sheep'); +SELECT * FROM t1 JOIN t2 USING(f1) WHERE f1='Bla'; +f1 f2 f3 +bla blah sheep +SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='bla'; +f1 f2 f3 +bla blah sheep +SELECT * FROM t1 LEFT JOIN t2 USING(f1) WHERE f1='Bla'; +f1 f2 f3 +bla blah sheep +DROP TABLE t1,t2; +CREATE TABLE t1 (id int PRIMARY KEY, a varchar(8)); +CREATE TABLE t2 (id int NOT NULL, b int NOT NULL, INDEX idx(id)); +INSERT INTO t1 VALUES +(1,'aaaaaaa'), (5,'eeeeeee'), (4,'ddddddd'), (2,'bbbbbbb'), (3,'ccccccc'); +INSERT INTO t2 VALUES +(3,10), (2,20), (5,30), (3,20), (5,10), (3,40), (3,30), (2,10), (2,40); +EXPLAIN +SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +flush status; +SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL; +id a +1 aaaaaaa +4 ddddddd +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 5 +Handler_read_next 9 +Handler_read_prev 0 +Handler_read_rnd 3 +Handler_read_rnd_next 6 +DROP TABLE t1,t2; +CREATE TABLE t1 (c int PRIMARY KEY, e int NOT NULL); +INSERT INTO t1 VALUES (1,0), (2,1); +CREATE TABLE t2 (d int PRIMARY KEY); +INSERT INTO t2 VALUES (1), (2), (3); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 index NULL PRIMARY 4 NULL 3 Using where; Using index; Not exists +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +c e d +1 0 NULL +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d<=>NULL; +c e d +1 0 NULL +DROP TABLE t1,t2; +# +# Bug#47650: using group by with rollup without indexes returns incorrect +# results with where +# +CREATE TABLE t1 ( a INT ); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 ( a INT, b INT ); +INSERT INTO t2 VALUES (1, 1),(1, 2),(1, 3),(2, 4),(2, 5); +EXPLAIN +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 LEFT JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 LEFT JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +a COUNT( t2.b ) SUM( t2.b ) MAX( t2.b ) +1 3 6 3 +NULL 3 6 3 +EXPLAIN +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where +SELECT t1.a, COUNT( t2.b ), SUM( t2.b ), MAX( t2.b ) +FROM t1 JOIN t2 USING( a ) +GROUP BY t1.a WITH ROLLUP; +a COUNT( t2.b ) SUM( t2.b ) MAX( t2.b ) +1 3 6 3 +NULL 3 6 3 +DROP TABLE t1, t2; +# +# Bug#51598 Inconsistent behaviour with a COALESCE statement inside an IN comparison +# +CREATE TABLE t1(f1 INT, f2 INT, f3 INT); +INSERT INTO t1 VALUES (1, NULL, 3); +CREATE TABLE t2(f1 INT, f2 INT); +INSERT INTO t2 VALUES (2, 1); +EXPLAIN EXTENDED SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2 +WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +1 SIMPLE t2 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '1' AS `f1`,NULL AS `f2`,'3' AS `f3`,NULL AS `f1`,NULL AS `f2` from `test`.`t1` left join `test`.`t2` on(0) where ((coalesce('1',NULL),'3') in ((1,3),(2,2))) +SELECT * FROM t1 LEFT JOIN t2 ON t1.f2 = t2.f2 +WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); +f1 f2 f3 f1 f2 +1 NULL 3 NULL NULL +DROP TABLE t1, t2; +# +# Bug#52357: Assertion failed: join->best_read in greedy_search +# optimizer_search_depth=0 +# +CREATE TABLE t1( a INT ); +INSERT INTO t1 VALUES (1),(2); +SET optimizer_search_depth = 0; +# Should not core dump on query preparation +EXPLAIN +SELECT 1 +FROM t1 tt3 LEFT OUTER JOIN t1 tt4 ON 1 +LEFT OUTER JOIN t1 tt5 ON 1 +LEFT OUTER JOIN t1 tt6 ON 1 +LEFT OUTER JOIN t1 tt7 ON 1 +LEFT OUTER JOIN t1 tt8 ON 1 +RIGHT OUTER JOIN t1 tt2 ON 1 +RIGHT OUTER JOIN t1 tt1 ON 1 +STRAIGHT_JOIN t1 tt9 ON 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE tt1 ALL NULL NULL NULL NULL 2 +1 SIMPLE tt2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +1 SIMPLE tt3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt4 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt5 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt6 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt8 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +1 SIMPLE tt9 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) +SET optimizer_search_depth = DEFAULT; +DROP TABLE t1; +# +# Bug#46091 STRAIGHT_JOIN + RIGHT JOIN returns different result +# +CREATE TABLE t1 (f1 INT NOT NULL); +INSERT INTO t1 VALUES (9),(0); +CREATE TABLE t2 (f1 INT NOT NULL); +INSERT INTO t2 VALUES +(5),(3),(0),(3),(1),(0),(1),(7),(1),(0),(0),(8),(4),(9),(0),(2),(0),(8),(5),(1); +SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1 +RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1; +COUNT(*) +476 +EXPLAIN SELECT STRAIGHT_JOIN COUNT(*) FROM t1 TA1 +RIGHT JOIN t2 TA2 JOIN t2 TA3 ON TA2.f1 ON TA3.f1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE TA2 ALL NULL NULL NULL NULL 20 Using where +1 SIMPLE TA3 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +1 SIMPLE TA1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join) +DROP TABLE t1, t2; +# +# Bug#48971 Segfault in add_found_match_trig_cond () at sql_select.cc:5990 +# +CREATE TABLE t1(f1 INT, PRIMARY KEY (f1)); +INSERT INTO t1 VALUES (1),(2); +EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1 +LEFT JOIN t1 AS jt2 +RIGHT JOIN t1 AS jt3 +JOIN t1 AS jt4 ON 1 +LEFT JOIN t1 AS jt5 ON 1 +ON 1 +RIGHT JOIN t1 AS jt6 ON jt6.f1 +ON 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt1` left join (`test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1))) on(1) where 1 +EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1 +RIGHT JOIN t1 AS jt2 +RIGHT JOIN t1 AS jt3 +JOIN t1 AS jt4 ON 1 +LEFT JOIN t1 AS jt5 ON 1 +ON 1 +RIGHT JOIN t1 AS jt6 ON jt6.f1 +ON 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index +1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (incremental, BNL join) +Warnings: +Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1)) left join `test`.`t1` `jt1` on(1) where 1 +DROP TABLE t1; +# +# Bug#49600: outer join of two single-row tables with joining attributes +# evaluated to nulls +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1, NULL); +insert into t2 values (2, NULL); +select * from t1 left join t2 on t1.b=t2.b; +a b a b +1 NULL NULL NULL +select * from t1 left join t2 on t1.b=t2.b where 1=1; +a b a b +1 NULL NULL NULL +drop table t1,t2; +# +# Bug#53161: outer join in the derived table is erroneously converted +# into an inner join for a query with a group by clause +# +create table t1 (pk int not null primary key, a int not null); +create table t2 like t1; +create table t3 like t1; +create table t4 (pk int not null primary key); +insert into t1 values (1000, 1), (1001, 1); +insert into t2 values (2000, 2), (2001, 2); +insert into t3 values (3000, 3), (3001, 2); +insert into t4 values (4000), (4001); +explain extended +select t2.pk, +(select t3.pk+if(isnull(t4.pk),0,t4.pk) +from t3 left join t4 on t4.pk=t3.pk +where t3.pk=t2.pk+1000 limit 1 ) as t +from t1,t2 +where t2.pk=t1.pk+1000 and t1.pk>1000 +group by t2.pk; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index; Using temporary; Using filesort +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index +Warnings: +Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`pk` AS `pk`,<expr_cache><`test`.`t2`.`pk`>((select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1)) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk` +select t2.pk, +(select t3.pk+if(isnull(t4.pk),0,t4.pk) +from t3 left join t4 on t4.pk=t3.pk +where t3.pk=t2.pk+1000 limit 1 ) as t +from t1,t2 +where t2.pk=t1.pk+1000 and t1.pk>1000 +group by t2.pk; +pk t +2001 3001 +drop table t1,t2,t3,t4; +# +# Bug#57024: Poor performance when conjunctive condition over the outer +# table is used in the on condition of an outer join +# +create table t1 (a int); +insert into t1 values (NULL), (NULL), (NULL), (NULL); +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 values (4), (2), (1), (3); +create table t2 like t1; +insert into t2 select if(t1.a is null, 10, t1.a) from t1; +create table t3 (a int, b int, index idx(a)); +insert into t3 values (1, 100), (3, 301), (4, 402), (1, 102), (1, 101); +analyze table t1,t2,t3; +Table Op Msg_type Msg_text +test.t1 analyze status OK +test.t2 analyze status OK +test.t3 analyze status OK +flush status; +select sum(t3.b) from t1 left join t3 on t3.a=t1.a and t1.a is not null; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_rnd 5 +Handler_read_rnd_next 1048581 +flush status; +select sum(t3.b) from t2 left join t3 on t3.a=t2.a and t2.a <> 10; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_rnd 5 +Handler_read_rnd_next 1048581 +drop table t1,t2,t3; +# +# Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field +# +CREATE TABLE t1 (f1 INT NOT NULL, PRIMARY KEY (f1)); +CREATE TABLE t2 (f1 INT NOT NULL, f2 INT NOT NULL, PRIMARY KEY (f1, f2)); +INSERT INTO t1 VALUES (4); +INSERT INTO t2 VALUES (3, 3); +INSERT INTO t2 VALUES (7, 7); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 Using temporary; Using filesort +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +4 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system PRIMARY NULL NULL NULL 1 Using filesort +1 SIMPLE t2 ref PRIMARY PRIMARY 4 const 1 Using where; Using index +SELECT * FROM t1 LEFT JOIN t2 ON t2.f1 = t1.f1 +WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL +GROUP BY t2.f1, t2.f2; +f1 f1 f2 +DROP TABLE t1,t2; +End of 5.1 tests +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; diff --git a/mysql-test/r/key_cache.result b/mysql-test/r/key_cache.result index fe579431420..162a0d47c27 100644 --- a/mysql-test/r/key_cache.result +++ b/mysql-test/r/key_cache.result @@ -136,7 +136,7 @@ i explain select count(*) from t1, t2 where t1.p = t2.i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index -1 SIMPLE t2 ref k1 k1 5 test.t1.p 2 Using where; Using index +1 SIMPLE t2 ref k1 k1 5 test.t1.p 2 Using index select count(*) from t1, t2 where t1.p = t2.i; count(*) 3 @@ -628,7 +628,7 @@ select p from t1 where p between 1010 and 1020; p explain select i from t2 where p between 1010 and 1020; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 28 Using where +1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 28 Using index condition; Rowid-ordered scan select i from t2 where p between 1010 and 1020; i 1 @@ -644,7 +644,7 @@ i 3 explain select count(*) from t1, t2 where t1.p = t2.i; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 index k1 k1 5 NULL 1024 Using index +1 SIMPLE t2 index k1 k1 5 NULL 1024 Using where; Using index 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.i 1 Using index select count(*) from t1, t2 where t1.p = t2.i; count(*) diff --git a/mysql-test/r/key_diff.result b/mysql-test/r/key_diff.result index 9d26bee4557..af928fcb203 100644 --- a/mysql-test/r/key_diff.result +++ b/mysql-test/r/key_diff.result @@ -36,7 +36,7 @@ a a a a explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL a NULL NULL NULL 5 -1 SIMPLE t2 ALL b NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t2 ALL b NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a; a b a b A B a a diff --git a/mysql-test/r/lowercase_mixed_tmpdir_innodb.result b/mysql-test/r/lowercase_mixed_tmpdir_innodb.result index a478b49cfda..a478b49cfda 100755..100644 --- a/mysql-test/r/lowercase_mixed_tmpdir_innodb.result +++ b/mysql-test/r/lowercase_mixed_tmpdir_innodb.result diff --git a/mysql-test/r/maria_icp.result b/mysql-test/r/maria_icp.result new file mode 100644 index 00000000000..7db44c0028f --- /dev/null +++ b/mysql-test/r/maria_icp.result @@ -0,0 +1,203 @@ +set @save_storage_engine= @@storage_engine; +set storage_engine=Maria; +# +# Bug#36981 - "innodb crash when selecting for update" +# +CREATE TABLE t1 ( +c1 CHAR(1), +c2 CHAR(10), +KEY (c1) +); +INSERT INTO t1 VALUES ('3', null); +SELECT * FROM t1 WHERE c1='3' FOR UPDATE; +c1 c2 +3 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +CREATE TABLE t2 (a INT); +INSERT INTO t2 SELECT A.a + 10*(B.a + 10*C.a) FROM t1 A, t1 B, t1 C; +CREATE TABLE t3 ( +c1 CHAR(10) NOT NULL, +c2 CHAR(10) NOT NULL, +c3 CHAR(200) NOT NULL, +KEY (c1) +); +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',1000+ t2.a,'=w'), 'filler' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',2000+t2.a,'=w'), 'filler-1' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',3000+t2.a,'=w'), 'filler-2' + FROM t2; +SELECT c1,c3 FROM t3 WHERE c1 >= 'c-1994=w' and c1 != 'c-1996=w' FOR UPDATE; +c1 c3 +c-1994=w filler +c-1994=w filler-1 +c-1994=w filler-2 +c-1995=w filler +c-1995=w filler-1 +c-1995=w filler-2 +c-1997=w filler +c-1997=w filler-1 +c-1997=w filler-2 +c-1998=w filler +c-1998=w filler-1 +c-1998=w filler-2 +c-1999=w filler +c-1999=w filler-1 +c-1999=w filler-2 +DROP TABLE t1,t2,t3; +# +# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for +# null-safe operator <=> NULL +# +CREATE TABLE t1( +c1 DATE NOT NULL, +c2 DATE NULL, +c3 DATETIME, +c4 TIMESTAMP, +PRIMARY KEY(c1), +UNIQUE(c2) +); + +INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05'); +INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26'); +INSERT INTO t1 VALUES('2008-01-01', NULL , '2008-01-02', '2008-01-03'); +INSERT INTO t1 VALUES('2008-01-17', NULL , NULL , '2009-01-29'); +INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29'); + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +DROP TABLE t1; +# +# Bug#40992 - InnoDB: Crash when engine_condition_pushdown is on +# +CREATE TABLE t ( +dummy INT PRIMARY KEY, +a INT UNIQUE, +b INT +); +INSERT INTO t VALUES (1,1,1),(3,3,3),(5,5,5); +SELECT * FROM t WHERE a > 2 FOR UPDATE; +dummy a b +3 3 3 +5 5 5 +DROP TABLE t; +# +# Bug#35080 - Innodb crash at mem_block_get_len line 72 +# +CREATE TABLE t1 ( +t1_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +PRIMARY KEY (t1_autoinc), +KEY k (uuid) +); +CREATE TABLE t2 ( +t2_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +date DATETIME DEFAULT NULL, +PRIMARY KEY (t2_autoinc), +KEY k (uuid) +); +CREATE VIEW v1 AS +SELECT t1_autoinc, uuid +FROM t1 +WHERE (ISNULL(uuid) OR (uuid like '%-%')); +CREATE VIEW v2 AS +SELECT t2_autoinc, uuid, date +FROM t2 +WHERE (ISNULL(uuid) OR (LENGTH(uuid) = 36)); +CREATE PROCEDURE delete_multi (IN uuid CHAR(36)) +DELETE v1, v2 FROM v1 INNER JOIN v2 +ON v1.uuid = v2.uuid +WHERE v1.uuid = @uuid; +SET @uuid = UUID(); +INSERT INTO v1 (uuid) VALUES (@uuid); +INSERT INTO v2 (uuid, date) VALUES (@uuid, '2009-09-09'); +CALL delete_multi(@uuid); +DROP procedure delete_multi; +DROP table t1,t2; +DROP view v1,v2; +# +# Bug#41996 - multi-table delete crashes server (InnoDB table) +# +CREATE TABLE t1 ( +b BIGINT, +i INT, +KEY (b) +); +INSERT INTO t1 VALUES (2, 2); +DELETE t1 FROM t1 a, t1 WHERE a.i=t1.b; +DROP TABLE t1; +# +# Bug#43448 - Server crashes on multi table delete with Innodb +# +CREATE TABLE t1 ( +id1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY, +t CHAR(12) +); +CREATE TABLE t2 ( +id2 INT NOT NULL, +t CHAR(12) +); +CREATE TABLE t3( +id3 INT NOT NULL, +t CHAR(12), +INDEX(id3) +); +CREATE PROCEDURE insert_data () +BEGIN +DECLARE i1 INT DEFAULT 20; +DECLARE i2 INT; +DECLARE i3 INT; +WHILE (i1 > 0) DO +INSERT INTO t1(t) VALUES (i1); +SET i2 = 2; +WHILE (i2 > 0) DO +INSERT INTO t2(id2, t) VALUES (i1, i2); +SET i3 = 2; +WHILE (i3 > 0) DO +INSERT INTO t3(id3, t) VALUES (i1, i2); +SET i3 = i3 -1; +END WHILE; +SET i2 = i2 -1; +END WHILE; +SET i1 = i1 - 1; +END WHILE; +END | +CALL insert_data(); +SELECT COUNT(*) FROM t1 WHERE id1 > 10; +COUNT(*) +10 +SELECT COUNT(*) FROM t2 WHERE id2 > 10; +COUNT(*) +20 +SELECT COUNT(*) FROM t3 WHERE id3 > 10; +COUNT(*) +40 +DELETE t1, t2, t3 +FROM t1, t2, t3 +WHERE t1.id1 = t2.id2 AND t2.id2 = t3.id3 AND t1.id1 > 3; +SELECT COUNT(*) FROM t1; +COUNT(*) +3 +SELECT COUNT(*) FROM t2; +COUNT(*) +6 +SELECT COUNT(*) FROM t3; +COUNT(*) +12 +DROP PROCEDURE insert_data; +DROP TABLE t1, t2, t3; +set storage_engine= @save_storage_engine; diff --git a/mysql-test/r/maria_mrr.result b/mysql-test/r/maria_mrr.result new file mode 100644 index 00000000000..58f20bc6abb --- /dev/null +++ b/mysql-test/r/maria_mrr.result @@ -0,0 +1,430 @@ +drop table if exists t1,t2,t3,t4; +set @mrr_buffer_size_save= @@mrr_buffer_size; +set @save_storage_engine= @@storage_engine; +set storage_engine=aria; +create table t1(a int); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) DEFAULT NULL +) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; +create table t3 ( +a char(8) not null, b char(8) not null, filler char(200), +key(a) +); +insert into t3 select @a:=concat('c-', 1000+ A.a, '=w'), @a, 'filler' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 2000+A.a, '=w'), +'filler-1' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 3000+A.a, '=w'), +'filler-2' from t2 A; +select a,filler from t3 where a >= 'c-9011=w'; +a filler +select a,filler from t3 where a >= 'c-1011=w' and a <= 'c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=z', 'c-1013=z', 'err'); +insert into t3 values ('a-1014=w', 'a-1014=w', 'err'); +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +delete from t3 where b in ('c-1013=z', 'a-1014=w'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=w', 'del-me', 'inserted'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +c-1013=w inserted +delete from t3 where b='del-me'; +alter table t3 add primary key(b); +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w', 'c-1021=w', +'c-1022=w', 'c-1023=w', 'c-1024=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +c-1024=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1020=w') or +b IN ('c-1021=w', 'c-1022=w', 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w') or +(b>='c-1021=w' and b<= 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +drop table if exists t4; +create table t4 (a varchar(10), b int, c char(10), filler char(200), +key idx1 (a, b, c)); +insert into t4 (filler) select concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-1', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-222', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'bb-1',NULL,'cc-2', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'zz-1',NULL,'cc-2', 'filler-data' from t2 order by a limit 500; +explain +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Rowid-ordered scan +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +a b c filler +NULL NULL NULL NULL-15 +NULL NULL NULL NULL-14 +NULL NULL NULL NULL-13 +NULL NULL NULL NULL-12 +NULL NULL NULL NULL-11 +NULL NULL NULL NULL-10 +NULL NULL NULL NULL-9 +NULL NULL NULL NULL-8 +NULL NULL NULL NULL-7 +NULL NULL NULL NULL-6 +NULL NULL NULL NULL-5 +NULL NULL NULL NULL-4 +NULL NULL NULL NULL-3 +NULL NULL NULL NULL-2 +NULL NULL NULL NULL-1 +explain +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Rowid-ordered scan +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +select * from t4 ignore index(idx1) where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +drop table t1, t2, t3, t4; +create table t1 (a int, b int not null,unique key (a,b),index(b)); +insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6); +create table t2 like t1; +insert into t2 select * from t1; +alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10)); +select * from t1 where a is null; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3; +a b c +NULL 9 0 +NULL 9 0 +select * from t1 where a is null and b=9 or a is null and b=7 limit 3; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +drop table t1, t2; +set storage_engine= @save_storage_engine; +set @@mrr_buffer_size= @mrr_buffer_size_save; +# +# Crash in quick_range_seq_next() in maria-5.3-dsmrr-cpk with join_cache_level = {8,1} +# +set @save_join_cache_level= @@join_cache_level; +SET SESSION join_cache_level = 8; +CREATE TABLE `t1` ( +`col_int_key` int(11) DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MARIA DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1; +INSERT INTO `t1` VALUES (6,'2005-10-07 00:00:00','e','e'); +INSERT INTO `t1` VALUES (51,'2000-07-15 05:00:34','f','f'); +CREATE TABLE `t2` ( +`col_int_key` int(11) DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MARIA DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1; +INSERT INTO `t2` VALUES (2,'2004-10-11 18:13:16','w','w'); +INSERT INTO `t2` VALUES (2,'1900-01-01 00:00:00','d','d'); +SELECT table2 .`col_datetime_key` +FROM t2 JOIN ( t1 table2 JOIN t2 table3 ON table3 .`col_varchar_key` < table2 .`col_varchar_key` ) ON table3 .`col_varchar_nokey` ; +col_datetime_key +drop table t1, t2; +set join_cache_level=@save_join_cache_level; +CREATE TABLE t1( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx (v, i) +) ENGINE=ARIA; +INSERT INTO t1 VALUES +(1,9,'x'), (2,5,'g'), (3,1,'o'), (4,0,'g'), (5,1,'v'), +(6,190,'m'), (7,6,'x'), (8,3,'c'), (9,4,'z'), (10,3,'i'), +(11,186,'x'), (12,1,'g'), (13,8,'q'), (14,226,'m'), (15,133,'p'); +CREATE TABLE t2( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx (v, i) +) ENGINE=ARIA; +INSERT INTO t2 SELECT * FROM t1; +INSERT INTO t2 VALUES (77, 333, 'z'); +CREATE TABLE t3( +pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, +PRIMARY KEY (pk), INDEX idx (v, i) +) ENGINE=ARIA; +INSERT INTO t3 SELECT * FROM t1; +INSERT INTO t3 VALUES (88, 442, 'y'), (99, 445, 'w') ; +SELECT COUNT(t1.v) FROM t1, t2 IGNORE INDEX (idx), t3 IGNORE INDEX (idx) +WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; +COUNT(t1.v) +120 +EXPLAIN +SELECT COUNT(t1.v) FROM t1, t2 IGNORE INDEX (idx), t3 IGNORE INDEX (idx) +WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL idx 7 NULL 15 Using index +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 16 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL PRIMARY NULL NULL NULL 17 Using where; Using join buffer (flat, BNL join) +SELECT COUNT(t1.v) FROM t1, t2, t3 +WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; +COUNT(t1.v) +120 +EXPLAIN +SELECT COUNT(t1.v) FROM t1, t2, t3 +WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL idx 7 NULL 15 Using index +1 SIMPLE t2 ALL PRIMARY,idx NULL NULL NULL 16 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ref PRIMARY,idx idx 3 test.t2.v 2 Using index condition; Using where +DROP TABLE t1,t2,t3; +# +# BUG#671361: virtual int Mrr_ordered_index_reader::refill_buffer(): Assertion `!know_key_tuple_params +# (works only on Maria because we need 1024-byte long key) +# +SET SESSION optimizer_use_mrr = 'force'; +SET SESSION join_cache_level = 6; +SET SESSION join_buffer_size = 1024; +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_varchar_1024_latin1_key varchar(1024) DEFAULT NULL, +PRIMARY KEY (pk), +KEY col_varchar_1024_latin1_key (col_varchar_1024_latin1_key) +) ENGINE=Aria; +INSERT INTO t1 VALUES +(1,'z'), +(2,'abcdefjhjkl'), +(3,'in'), +(4,'abcdefjhjkl'), +(6,'abcdefjhjkl'); +CREATE TABLE t2 ( +col_varchar_10_latin1 varchar(10) DEFAULT NULL +) ENGINE=Aria; +INSERT INTO t2 VALUES ('foo'), ('foo'); +EXPLAIN SELECT count(*) +FROM t1 AS table1, t2 AS table2 +WHERE +table1.col_varchar_1024_latin1_key = table2.col_varchar_10_latin1 AND table1.pk<>0 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE table2 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE table1 ref PRIMARY,col_varchar_1024_latin1_key col_varchar_1024_latin1_key 1027 test.table2.col_varchar_10_latin1 2 Using index condition(BKA); Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT count(*) +FROM t1 AS table1, t2 AS table2 +WHERE +table1.col_varchar_1024_latin1_key = table2.col_varchar_10_latin1 AND table1.pk<>0 ; +count(*) +0 +drop table t1, t2; +# +# BUG#693747: Assertion multi_range_read.cc:908: int DsMrr_impl::dsmrr_init( +# +set @_save_join_cache_level= @@join_cache_level; +set @_save_join_buffer_size= @@join_buffer_size; +set join_cache_level=8; +set join_buffer_size=10000; +CREATE TABLE t1 ( +f2 varchar(32) COLLATE latin1_swedish_ci, +f3 int(11), +f4 varchar(1024) COLLATE utf8_bin, +f5 varchar(1024) COLLATE latin1_bin, +KEY (f5) +) ENGINE=Aria TRANSACTIONAL=0 ; +# Fill the table with some data +SELECT alias2.* , alias1.f2 +FROM +t1 AS alias1 +LEFT JOIN t1 AS alias2 ON alias1.f2 = alias2.f5 +WHERE +alias2.f3 < 0; +f2 f3 f4 f5 f2 +set join_cache_level=@_save_join_cache_level; +set join_buffer_size=@_save_join_buffer_size; +drop table t1; diff --git a/mysql-test/r/merge.result b/mysql-test/r/merge.result index 289be98c1b5..a575242db2f 100644 --- a/mysql-test/r/merge.result +++ b/mysql-test/r/merge.result @@ -673,7 +673,7 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2 AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,files PRIMARY 35 NULL 5 Using where +1 SIMPLE t1 range PRIMARY,files PRIMARY 35 NULL 5 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2 AND file_code = '0000000115' LIMIT 1; id select_type table type possible_keys key key_len ref rows Extra diff --git a/mysql-test/r/mix2_myisam.result b/mysql-test/r/mix2_myisam.result index e0a3d1af089..4172226b986 100644 --- a/mysql-test/r/mix2_myisam.result +++ b/mysql-test/r/mix2_myisam.result @@ -1114,11 +1114,11 @@ count(*) 29267 explain select * from t1 where c between 1 and 2500; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c c 5 NULL # Using where +1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan update t1 set c=a; explain select * from t1 where c between 1 and 2500; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c c 5 NULL # Using where +1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan drop table t1,t2; create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=MyISAM; insert into t1 (id) values (null),(null),(null),(null),(null); @@ -1559,7 +1559,7 @@ qq *a *a*a * explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v,v_2 # 13 const # Using where +1 SIMPLE t1 ref v,v_2 # 13 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 @@ -1735,7 +1735,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref v v 303 const # Using where; Using index explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where +1 SIMPLE t1 ref v v 303 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 diff --git a/mysql-test/r/myisam.result b/mysql-test/r/myisam.result index 0d6a7c4ffc4..49d8e2d576f 100644 --- a/mysql-test/r/myisam.result +++ b/mysql-test/r/myisam.result @@ -346,32 +346,32 @@ t1 1 c_2 2 a A 5 NULL NULL BTREE explain select * from t1,t2 where t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL a NULL NULL NULL 2 -1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) explain select * from t1,t2 force index(a) where t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL a NULL NULL NULL 2 -1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) explain select * from t1 force index(a),t2 force index(a) where t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL a NULL NULL NULL 2 1 SIMPLE t1 ref a a 4 test.t2.a 3 explain select * from t1,t2 where t1.b=t2.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL b NULL NULL NULL 2 -1 SIMPLE t1 ref b b 5 test.t2.b 1 Using where +1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where +1 SIMPLE t1 ref b b 5 test.t2.b 1 explain select * from t1,t2 force index(c) where t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 -1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) explain select * from t1 where a=0 or a=2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where explain select * from t1 force index (a) where a=0 or a=2; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 4 NULL 4 Using where +1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Rowid-ordered scan explain select * from t1 where c=1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c,c_2 c 5 const 1 Using where +1 SIMPLE t1 ref c,c_2 c 5 const 1 explain select * from t1 use index() where c=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where @@ -1230,7 +1230,7 @@ qq *a *a*a * explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v,v_2 # 13 const # Using where +1 SIMPLE t1 ref v,v_2 # 13 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 @@ -1406,7 +1406,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref v v 303 const # Using where; Using index explain select * from t1 where v='a'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where +1 SIMPLE t1 ref v v 303 const # Using index condition select v,count(*) from t1 group by v limit 10; v count(*) a 1 diff --git a/mysql-test/r/myisam_icp.result b/mysql-test/r/myisam_icp.result new file mode 100644 index 00000000000..45d45bd3452 --- /dev/null +++ b/mysql-test/r/myisam_icp.result @@ -0,0 +1,201 @@ +# +# Bug#36981 - "innodb crash when selecting for update" +# +CREATE TABLE t1 ( +c1 CHAR(1), +c2 CHAR(10), +KEY (c1) +); +INSERT INTO t1 VALUES ('3', null); +SELECT * FROM t1 WHERE c1='3' FOR UPDATE; +c1 c2 +3 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +CREATE TABLE t2 (a INT); +INSERT INTO t2 SELECT A.a + 10*(B.a + 10*C.a) FROM t1 A, t1 B, t1 C; +CREATE TABLE t3 ( +c1 CHAR(10) NOT NULL, +c2 CHAR(10) NOT NULL, +c3 CHAR(200) NOT NULL, +KEY (c1) +); +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',1000+ t2.a,'=w'), 'filler' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',2000+t2.a,'=w'), 'filler-1' + FROM t2; +INSERT INTO t3 +SELECT CONCAT('c-',1000+t2.a,'=w'), CONCAT('c-',3000+t2.a,'=w'), 'filler-2' + FROM t2; +SELECT c1,c3 FROM t3 WHERE c1 >= 'c-1994=w' and c1 != 'c-1996=w' FOR UPDATE; +c1 c3 +c-1994=w filler +c-1994=w filler-1 +c-1994=w filler-2 +c-1995=w filler +c-1995=w filler-1 +c-1995=w filler-2 +c-1997=w filler +c-1997=w filler-1 +c-1997=w filler-2 +c-1998=w filler +c-1998=w filler-1 +c-1998=w filler-2 +c-1999=w filler +c-1999=w filler-1 +c-1999=w filler-2 +DROP TABLE t1,t2,t3; +# +# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for +# null-safe operator <=> NULL +# +CREATE TABLE t1( +c1 DATE NOT NULL, +c2 DATE NULL, +c3 DATETIME, +c4 TIMESTAMP, +PRIMARY KEY(c1), +UNIQUE(c2) +); + +INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05'); +INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26'); +INSERT INTO t1 VALUES('2008-01-01', NULL , '2008-01-02', '2008-01-03'); +INSERT INTO t1 VALUES('2008-01-17', NULL , NULL , '2009-01-29'); +INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29'); + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2; +c1 c2 c3 c4 +2008-01-01 NULL 2008-01-02 00:00:00 2008-01-03 00:00:00 +2008-01-17 NULL NULL 2009-01-29 00:00:00 + +DROP TABLE t1; +# +# Bug#40992 - InnoDB: Crash when engine_condition_pushdown is on +# +CREATE TABLE t ( +dummy INT PRIMARY KEY, +a INT UNIQUE, +b INT +); +INSERT INTO t VALUES (1,1,1),(3,3,3),(5,5,5); +SELECT * FROM t WHERE a > 2 FOR UPDATE; +dummy a b +3 3 3 +5 5 5 +DROP TABLE t; +# +# Bug#35080 - Innodb crash at mem_block_get_len line 72 +# +CREATE TABLE t1 ( +t1_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +PRIMARY KEY (t1_autoinc), +KEY k (uuid) +); +CREATE TABLE t2 ( +t2_autoinc INT(11) NOT NULL AUTO_INCREMENT, +uuid VARCHAR(36) DEFAULT NULL, +date DATETIME DEFAULT NULL, +PRIMARY KEY (t2_autoinc), +KEY k (uuid) +); +CREATE VIEW v1 AS +SELECT t1_autoinc, uuid +FROM t1 +WHERE (ISNULL(uuid) OR (uuid like '%-%')); +CREATE VIEW v2 AS +SELECT t2_autoinc, uuid, date +FROM t2 +WHERE (ISNULL(uuid) OR (LENGTH(uuid) = 36)); +CREATE PROCEDURE delete_multi (IN uuid CHAR(36)) +DELETE v1, v2 FROM v1 INNER JOIN v2 +ON v1.uuid = v2.uuid +WHERE v1.uuid = @uuid; +SET @uuid = UUID(); +INSERT INTO v1 (uuid) VALUES (@uuid); +INSERT INTO v2 (uuid, date) VALUES (@uuid, '2009-09-09'); +CALL delete_multi(@uuid); +DROP procedure delete_multi; +DROP table t1,t2; +DROP view v1,v2; +# +# Bug#41996 - multi-table delete crashes server (InnoDB table) +# +CREATE TABLE t1 ( +b BIGINT, +i INT, +KEY (b) +); +INSERT INTO t1 VALUES (2, 2); +DELETE t1 FROM t1 a, t1 WHERE a.i=t1.b; +DROP TABLE t1; +# +# Bug#43448 - Server crashes on multi table delete with Innodb +# +CREATE TABLE t1 ( +id1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY, +t CHAR(12) +); +CREATE TABLE t2 ( +id2 INT NOT NULL, +t CHAR(12) +); +CREATE TABLE t3( +id3 INT NOT NULL, +t CHAR(12), +INDEX(id3) +); +CREATE PROCEDURE insert_data () +BEGIN +DECLARE i1 INT DEFAULT 20; +DECLARE i2 INT; +DECLARE i3 INT; +WHILE (i1 > 0) DO +INSERT INTO t1(t) VALUES (i1); +SET i2 = 2; +WHILE (i2 > 0) DO +INSERT INTO t2(id2, t) VALUES (i1, i2); +SET i3 = 2; +WHILE (i3 > 0) DO +INSERT INTO t3(id3, t) VALUES (i1, i2); +SET i3 = i3 -1; +END WHILE; +SET i2 = i2 -1; +END WHILE; +SET i1 = i1 - 1; +END WHILE; +END | +CALL insert_data(); +SELECT COUNT(*) FROM t1 WHERE id1 > 10; +COUNT(*) +10 +SELECT COUNT(*) FROM t2 WHERE id2 > 10; +COUNT(*) +20 +SELECT COUNT(*) FROM t3 WHERE id3 > 10; +COUNT(*) +40 +DELETE t1, t2, t3 +FROM t1, t2, t3 +WHERE t1.id1 = t2.id2 AND t2.id2 = t3.id3 AND t1.id1 > 3; +SELECT COUNT(*) FROM t1; +COUNT(*) +3 +SELECT COUNT(*) FROM t2; +COUNT(*) +6 +SELECT COUNT(*) FROM t3; +COUNT(*) +12 +DROP PROCEDURE insert_data; +DROP TABLE t1, t2, t3; +drop table if exists t0, t1, t1i, t1m; diff --git a/mysql-test/r/myisam_mrr.result b/mysql-test/r/myisam_mrr.result new file mode 100644 index 00000000000..2f1560ea981 --- /dev/null +++ b/mysql-test/r/myisam_mrr.result @@ -0,0 +1,510 @@ +drop table if exists t0, t1, t2, t3; +set @mrr_buffer_size_save= @@mrr_buffer_size; +set mrr_buffer_size=79; +Warnings: +Warning 1292 Truncated incorrect mrr_buffer_size value: '79' +create table t1(a int); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; +create table t3 ( +a char(8) not null, b char(8) not null, filler char(200), +key(a) +); +insert into t3 select @a:=concat('c-', 1000+ A.a, '=w'), @a, 'filler' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 2000+A.a, '=w'), +'filler-1' from t2 A; +insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 3000+A.a, '=w'), +'filler-2' from t2 A; +select a,filler from t3 where a >= 'c-9011=w'; +a filler +select a,filler from t3 where a >= 'c-1011=w' and a <= 'c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=z', 'c-1013=z', 'err'); +insert into t3 values ('a-1014=w', 'a-1014=w', 'err'); +select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or +(a>='c-1014=w' and a <= 'c-1015=w'); +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +delete from t3 where b in ('c-1013=z', 'a-1014=w'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +insert into t3 values ('c-1013=w', 'del-me', 'inserted'); +select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or +a='c-1014=w' or a='c-1015=w'; +a filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1011=w filler-1 +c-1012=w filler-1 +c-1013=w filler-1 +c-1014=w filler-1 +c-1015=w filler-1 +c-1011=w filler-2 +c-1012=w filler-2 +c-1013=w filler-2 +c-1014=w filler-2 +c-1015=w filler-2 +c-1013=w inserted +delete from t3 where b='del-me'; +alter table t3 add primary key(b); +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w', 'c-1021=w', +'c-1022=w', 'c-1023=w', 'c-1024=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +c-1024=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1020=w') or +b IN ('c-1021=w', 'c-1022=w', 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or +b IN ('c-1019=w', 'c-1020=w') or +(b>='c-1021=w' and b<= 'c-1023=w'); +b filler +c-1011=w filler +c-1012=w filler +c-1013=w filler +c-1014=w filler +c-1015=w filler +c-1016=w filler +c-1017=w filler +c-1018=w filler +c-1019=w filler +c-1020=w filler +c-1021=w filler +c-1022=w filler +c-1023=w filler +drop table if exists t4; +create table t4 (a varchar(10), b int, c char(10), filler char(200), +key idx1 (a, b, c)); +insert into t4 (filler) select concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-1', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'b-1',NULL,'c-222', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'bb-1',NULL,'cc-2', concat('NULL-', 15-a) from t2 order by a limit 15; +insert into t4 (a,b,c,filler) +select 'zz-1',NULL,'cc-2', 'filler-data' from t2 order by a limit 500; +explain +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 10 Using index condition; Rowid-ordered scan +select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' + or c='no-such-row2'); +a b c filler +NULL NULL NULL NULL-15 +NULL NULL NULL NULL-14 +NULL NULL NULL NULL-13 +NULL NULL NULL NULL-12 +NULL NULL NULL NULL-11 +NULL NULL NULL NULL-10 +NULL NULL NULL NULL-9 +NULL NULL NULL NULL-8 +NULL NULL NULL NULL-7 +NULL NULL NULL NULL-6 +NULL NULL NULL NULL-5 +NULL NULL NULL NULL-4 +NULL NULL NULL NULL-3 +NULL NULL NULL NULL-2 +NULL NULL NULL NULL-1 +explain +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 range idx1 idx1 29 NULL 21 Using index condition; Rowid-ordered scan +select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +select * from t4 ignore index(idx1) where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); +a b c filler +b-1 NULL c-1 NULL-15 +b-1 NULL c-1 NULL-14 +b-1 NULL c-1 NULL-13 +b-1 NULL c-1 NULL-12 +b-1 NULL c-1 NULL-11 +b-1 NULL c-1 NULL-10 +b-1 NULL c-1 NULL-9 +b-1 NULL c-1 NULL-8 +b-1 NULL c-1 NULL-7 +b-1 NULL c-1 NULL-6 +b-1 NULL c-1 NULL-5 +b-1 NULL c-1 NULL-4 +b-1 NULL c-1 NULL-3 +b-1 NULL c-1 NULL-2 +b-1 NULL c-1 NULL-1 +bb-1 NULL cc-2 NULL-15 +bb-1 NULL cc-2 NULL-14 +bb-1 NULL cc-2 NULL-13 +bb-1 NULL cc-2 NULL-12 +bb-1 NULL cc-2 NULL-11 +bb-1 NULL cc-2 NULL-10 +bb-1 NULL cc-2 NULL-9 +bb-1 NULL cc-2 NULL-8 +bb-1 NULL cc-2 NULL-7 +bb-1 NULL cc-2 NULL-6 +bb-1 NULL cc-2 NULL-5 +bb-1 NULL cc-2 NULL-4 +bb-1 NULL cc-2 NULL-3 +bb-1 NULL cc-2 NULL-2 +bb-1 NULL cc-2 NULL-1 +drop table t1, t2, t3, t4; +create table t1 (a int, b int not null,unique key (a,b),index(b)); +insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6); +create table t2 like t1; +insert into t2 select * from t1; +alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10)); +select * from t1 where a is null; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3; +a b c +NULL 9 0 +NULL 9 0 +select * from t1 where a is null and b=9 or a is null and b=7 limit 3; +a b c +NULL 7 0 +NULL 9 0 +NULL 9 0 +drop table t1, t2; +set @@mrr_buffer_size= @mrr_buffer_size_save; +CREATE TABLE t1 ( +ID int(10) unsigned NOT NULL AUTO_INCREMENT, +col1 int(10) unsigned DEFAULT NULL, +key1 int(10) unsigned NOT NULL DEFAULT '0', +key2 int(10) unsigned DEFAULT NULL, +text1 text, +text2 text, +col2 smallint(6) DEFAULT '100', +col3 enum('headers','bodyandsubject') NOT NULL DEFAULT 'bodyandsubject', +col4 tinyint(3) unsigned NOT NULL DEFAULT '0', +PRIMARY KEY (ID), +KEY (key1), +KEY (key2) +) ENGINE=MyISAM AUTO_INCREMENT=6 DEFAULT CHARSET=utf8; +INSERT INTO t1 VALUES +(1,NULL,1130,NULL,'Hello',NULL,100,'bodyandsubject',0), +(2,NULL,1130,NULL,'bye',NULL,100,'bodyandsubject',0), +(3,NULL,1130,NULL,'red',NULL,100,'bodyandsubject',0), +(4,NULL,1130,NULL,'yellow',NULL,100,'bodyandsubject',0), +(5,NULL,1130,NULL,'blue',NULL,100,'bodyandsubject',0); +select * FROM t1 WHERE key1=1130 AND col1 IS NULL ORDER BY text1; +ID col1 key1 key2 text1 text2 col2 col3 col4 +5 NULL 1130 NULL blue NULL 100 bodyandsubject 0 +2 NULL 1130 NULL bye NULL 100 bodyandsubject 0 +1 NULL 1130 NULL Hello NULL 100 bodyandsubject 0 +3 NULL 1130 NULL red NULL 100 bodyandsubject 0 +4 NULL 1130 NULL yellow NULL 100 bodyandsubject 0 +drop table t1; + +BUG#37851: Crash in test_if_skip_sort_order tab->select is zero + +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +int_key int(11) DEFAULT NULL, +PRIMARY KEY (pk), +KEY int_key (int_key) +); +INSERT INTO t2 VALUES (1,1),(2,6),(3,0); +EXPLAIN EXTENDED +SELECT MIN(t1.pk) +FROM t1 WHERE EXISTS ( +SELECT t2.pk +FROM t2 +WHERE t2.int_key IS NULL +GROUP BY t2.pk +); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 ref int_key int_key 5 1 100.00 Using index condition; Using where; Using filesort +Warnings: +Note 1003 select min(`test`.`t1`.`pk`) AS `MIN(t1.pk)` from `test`.`t1` where 0 +DROP TABLE t1, t2; +# +# BUG#42048 Discrepancy between MyISAM and Maria's ICP implementation +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b char(20), filler char(200), key(a,b(10))); +insert into t1 select A.a + 10*(B.a + 10*C.a), 'bbb','filler' from t0 A, t0 B, t0 C; +update t1 set b=repeat(char(65+a), 20) where a < 25; +This must show range + using index condition: +explain select * from t1 where a < 10 and b = repeat(char(65+a), 20); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a a 5 NULL 19 Using where +select * from t1 where a < 10 and b = repeat(char(65+a), 20); +a b filler +0 AAAAAAAAAAAAAAAAAAAA filler +1 BBBBBBBBBBBBBBBBBBBB filler +2 CCCCCCCCCCCCCCCCCCCC filler +3 DDDDDDDDDDDDDDDDDDDD filler +4 EEEEEEEEEEEEEEEEEEEE filler +5 FFFFFFFFFFFFFFFFFFFF filler +6 GGGGGGGGGGGGGGGGGGGG filler +7 HHHHHHHHHHHHHHHHHHHH filler +8 IIIIIIIIIIIIIIIIIIII filler +9 JJJJJJJJJJJJJJJJJJJJ filler +drop table t0,t1; +# +# BUG#41136: ORDER BY + range access: EXPLAIN shows "Using MRR" while MRR is actually not used +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, key(a)); +insert into t1 select A.a + 10 *(B.a + 10*C.a), A.a + 10 *(B.a + 10*C.a) from t0 A, t0 B, t0 C; +This mustn't show "Using MRR": +explain select * from t1 where a < 20 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a a 5 NULL 20 Using index condition +drop table t0, t1; +# +# Part of MWL#67: DS-MRR backport: add an @@optimizer_switch flag for +# index_condition pushdown: +# - engine_condition_pushdown does not affect ICP +select @@optimizer_switch like '%index_condition_pushdown=on%'; +@@optimizer_switch like '%index_condition_pushdown=on%' +1 +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, key(a)); +insert into t1 select A.a + 10 *(B.a + 10*C.a), A.a + 10 *(B.a + 10*C.a) from t0 A, t0 B, t0 C; +A query that will use ICP: +explain select * from t1 where a < 20; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Rowid-ordered scan +set @save_optimizer_switch=@@optimizer_switch; +set optimizer_switch='index_condition_pushdown=off'; +explain select * from t1 where a < 20; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a a 5 NULL 20 Using where; Rowid-ordered scan +set optimizer_switch='index_condition_pushdown=on'; +explain select * from t1 where a < 20; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Rowid-ordered scan +set optimizer_switch=@save_optimizer_switch; +# +# BUG#629684: Unreachable code in multi_range_read.cc in maria-5.3-dsmrr-cpk +# +delete from t0 where a > 2; +insert into t0 values (NULL),(NULL); +insert into t1 values (NULL, 1234), (NULL, 5678); +set @save_join_cache_level=@@join_cache_level; +set @@join_cache_level=6; +explain +select * from t0, t1 where t0.a<=>t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 5 +1 SIMPLE t1 ref a a 5 test.t0.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select * from t0, t1 where t0.a<=>t1.a; +a a b +0 0 0 +1 1 1 +2 2 2 +NULL NULL 1234 +NULL NULL 1234 +NULL NULL 5678 +NULL NULL 5678 +set @@join_cache_level=@save_join_cache_level; +drop table t0, t1; +# +# BUG#625841: Assertion `!table || (!table->read_set || bitmap_is_set +# (table->read_set, field_index))' on REPLACE ... SELECT with MRR +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 ( +key1 varchar(10), +col1 char(255), col2 char(255), +col3 char(244), col4 char(255), +key(key1) +); +create table t2 like t1; +insert into t1 +select +1000+A.a+100*B.a + 10*C.a, +'col1val', 'col2val', +'col3val', 'col4val' +from t0 A, t0 B, t0 C; +REPLACE INTO t2(col2,col3,col4) +SELECT col2,col3,col4 +FROM t1 +WHERE `key1` LIKE CONCAT( LEFT( '1' , 7 ) , '%' ) +ORDER BY col1 LIMIT 7; +drop table t0, t1, t2; +# +# BUG#670417: Diverging results in maria-5.3-mwl128-dsmrr-cpk with join buffer (incremental, BKA join) +# +set @save_join_cache_level = @@join_cache_level; +set join_cache_level = 6; +set @save_join_buffer_size=@@join_buffer_size; +set join_buffer_size = 136; +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +col_int_key int(11) NOT NULL, +col_varchar_key varchar(1) NOT NULL, +col_varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY col_varchar_key (col_varchar_key,col_int_key) +); +INSERT INTO t1 VALUES +(10,8,'v','v'),(11,8,'f','f'), (12,5,'v','v'), +(13,8,'s','s'),(14,8,'a','a'),(15,6,'p','p'), +(16,7,'z','z'),(17,2,'a','a'),(18,5,'h','h'), +(19,7,'h','h'),(20,2,'v','v'),(21,9,'v','v'), +(22,142,'b','b'),(23,3,'y','y'),(24,0,'v','v'), +(25,3,'m','m'),(26,5,'z','z'),(27,9,'n','n'), +(28,1,'d','d'),(29,107,'a','a'); +SELECT COUNT(*) +FROM +t1 AS table2, t1 AS table3 +where +table3.col_varchar_key = table2.col_varchar_key AND +table3.col_varchar_key = table2.col_varchar_nokey AND +table3.pk<>0; +COUNT(*) +50 +EXPLAIN SELECT COUNT(*) +FROM +t1 AS table2, t1 AS table3 +where +table3.col_varchar_key = table2.col_varchar_key AND +table3.col_varchar_key = table2.col_varchar_nokey AND +table3.pk<>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE table2 ALL col_varchar_key NULL NULL NULL 20 Using where +1 SIMPLE table3 ref PRIMARY,col_varchar_key col_varchar_key 3 test.table2.col_varchar_key 3 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +set join_cache_level= @save_join_cache_level; +set join_buffer_size= @save_join_buffer_size; +drop table t1; diff --git a/mysql-test/r/mysqlbinlog.result b/mysql-test/r/mysqlbinlog.result index 45068ddfaec..21219e9ede4 100644 --- a/mysql-test/r/mysqlbinlog.result +++ b/mysql-test/r/mysqlbinlog.result @@ -1,15 +1,17 @@ reset master; +SET @save_binlog_size= @@global.max_binlog_size; +SET @@global.max_binlog_size= 4096; set timestamp=1000000000; drop table if exists t1,t2,t3,t4,t5,t03,t04; create table t1 (word varchar(20)); create table t2 (id int auto_increment not null primary key); insert into t1 values ("abirvalg"); insert into t2 values (); -load data infile '../../std_data/words.dat' into table t1; -load data infile '../../std_data/words.dat' into table t1; -load data infile '../../std_data/words.dat' into table t1; -load data infile '../../std_data/words.dat' into table t1; -load data infile '../../std_data/words.dat' into table t1; +load data infile '../../std_data/words3.dat' into table t1; +load data infile '../../std_data/words3.dat' into table t1; +load data infile '../../std_data/words3.dat' into table t1; +load data infile '../../std_data/words3.dat' into table t1; +load data infile '../../std_data/words3.dat' into table t1; insert into t1 values ("Alas"); flush logs; @@ -220,7 +222,6 @@ ROLLBACK /* added by mysqlbinlog */; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; ROLLBACK/*!*/; -use test/*!*/; SET TIMESTAMP=1108844556/*!*/; SET @@session.pseudo_thread_id=999999999/*!*/; SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/; @@ -228,6 +229,7 @@ SET @@session.lc_time_names=0/*!*/; SET @@session.collation_database=DEFAULT/*!*/; BEGIN /*!*/; +use test/*!*/; SET TIMESTAMP=1108844555/*!*/; insert t1 values (1) /*!*/; @@ -239,7 +241,6 @@ Warning: The option '--position' is deprecated and will be removed in a future r /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; -use test/*!*/; SET TIMESTAMP=1108844556/*!*/; SET @@session.pseudo_thread_id=999999999/*!*/; SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/; @@ -247,6 +248,7 @@ SET @@session.lc_time_names=0/*!*/; SET @@session.collation_database=DEFAULT/*!*/; BEGIN /*!*/; +use test/*!*/; SET TIMESTAMP=1108844555/*!*/; insert t1 values (1) /*!*/; @@ -255,6 +257,7 @@ DELIMITER ; ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/; drop table t1,t2; +SET @@global.max_binlog_size= @save_binlog_size; flush logs; flush logs; select * from t5 /* must be (1),(1) */; @@ -377,14 +380,14 @@ LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-#-#' INTO TABLE `t1` FI /*!*/; SET TIMESTAMP=1000000000/*!*/; SET @@session.collation_database=7/*!*/; -LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-a-0' INTO TABLE `t1` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) +LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-#-#' INTO TABLE `t1` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) /*!*/; SET TIMESTAMP=1000000000/*!*/; SET @@session.collation_database=DEFAULT/*!*/; -LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-b-0' INTO TABLE `t1` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) +LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-#-#' INTO TABLE `t1` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) /*!*/; SET TIMESTAMP=1000000000/*!*/; -LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-c-0' INTO TABLE `t1` CHARACTER SET koi8r FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) +LOAD DATA LOCAL INFILE 'MYSQLTEST_VARDIR/tmp/SQL_LOAD_MB-#-#' INTO TABLE `t1` CHARACTER SET koi8r FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`a`) /*!*/; SET TIMESTAMP=1000000000/*!*/; drop table t1 @@ -581,7 +584,6 @@ SET @@session.lc_time_names=0/*!*/; SET @@session.collation_database=DEFAULT/*!*/; BEGIN /*!*/; -use test/*!*/; SET TIMESTAMP=1266652094/*!*/; SavePoint mixed_cases /*!*/; @@ -592,11 +594,9 @@ INSERT INTO db1.t2 VALUES("in savepoint mixed_cases") SET TIMESTAMP=1266652094/*!*/; INSERT INTO db1.t1 VALUES(40) /*!*/; -use test/*!*/; SET TIMESTAMP=1266652094/*!*/; ROLLBACK TO mixed_cases /*!*/; -use db1/*!*/; SET TIMESTAMP=1266652094/*!*/; INSERT INTO db1.t2 VALUES("after rollback to") /*!*/; @@ -624,7 +624,6 @@ SET @@session.lc_time_names=0/*!*/; SET @@session.collation_database=DEFAULT/*!*/; BEGIN /*!*/; -use test/*!*/; SET TIMESTAMP=1266652094/*!*/; SavePoint mixed_cases /*!*/; diff --git a/mysql-test/r/mysqldump-max.result b/mysql-test/r/mysqldump-max.result index c300f3d7996..6722f308358 100644 --- a/mysql-test/r/mysqldump-max.result +++ b/mysql-test/r/mysqldump-max.result @@ -290,3 +290,60 @@ COUNT(*) DROP VIEW v1; DROP TABLE t1; SET GLOBAL storage_engine=@old_engine; +# Connection default +SET binlog_format= mixed; +RESET MASTER; +CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB; +INSERT INTO t2 VALUES (1,0), (2,0); +SELECT GET_LOCK("block_queries_1", 120); +GET_LOCK("block_queries_1", 120) +1 +# Connection c3 +SELECT GET_LOCK("block_queries_2", 120); +GET_LOCK("block_queries_2", 120) +1 +# Connection c1 +SET @c= 0; +SELECT IF(@c<1, @c:=@c+1, GET_LOCK("block_queries_1", 120)) FROM t1 ORDER BY a; +# Connection c2 +SET binlog_format="row"; +SET @d= 10; +UPDATE t2 SET b=IF(@d<=10, @d:=@d+1, GET_LOCK("block_queries_2", 120)) ORDER BY a; +# Connection default +# Make sure other queries are running (and waiting). +SELECT RELEASE_LOCK("block_queries_1"); +RELEASE_LOCK("block_queries_1") +1 +# Connection c3 +SELECT RELEASE_LOCK("block_queries_2"); +RELEASE_LOCK("block_queries_2") +1 +# Connection c1 +IF(@c<1, @c:=@c+1, GET_LOCK("block_queries_1", 120)) +1 +1 +# Connection c2 +# Connection default +SELECT * FROM t2 ORDER BY a; +a b +1 11 +2 1 +DROP TABLE t1; +DROP TABLE t2; +SHOW BINLOG EVENTS LIMIT 6,3; +Log_name Pos Event_type Server_id End_log_pos Info +master-bin.000001 663 Query 1 731 BEGIN +master-bin.000001 731 Query 1 828 use `test`; INSERT INTO t2 VALUES (1,0), (2,0) +master-bin.000001 828 Xid 1 855 COMMIT /* XID */ +-- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000001', MASTER_LOG_POS=855; +SELECT * FROM t1 ORDER BY a; +a +1 +2 +SELECT * FROM t2 ORDER BY a; +a b +1 0 +2 0 +DROP TABLE t1,t2; diff --git a/mysql-test/r/named_pipe.result b/mysql-test/r/named_pipe.result index 32e96fa27b7..dbe552eeeeb 100644 --- a/mysql-test/r/named_pipe.result +++ b/mysql-test/r/named_pipe.result @@ -183,37 +183,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1389,15 +1389,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1413,15 +1413,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1429,7 +1429,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/negation_elimination.result b/mysql-test/r/negation_elimination.result index 91a4c273832..dea0d865d87 100644 --- a/mysql-test/r/negation_elimination.result +++ b/mysql-test/r/negation_elimination.result @@ -79,7 +79,7 @@ a 19 explain select * from t1 where not(a != 10); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a a 5 const 1 Using where; Using index +1 SIMPLE t1 ref a a 5 const 1 Using index select * from t1 where not(a != 1); a 1 diff --git a/mysql-test/r/null.result b/mysql-test/r/null.result index 1cdc48e6552..54729bd6937 100644 --- a/mysql-test/r/null.result +++ b/mysql-test/r/null.result @@ -148,10 +148,10 @@ insert into t1 values (7,7), (8,8), (9,9), (10,10), (11,11), (12,12); explain select * from t1 where a between 2 and 3; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range idx idx 4 NULL 2 Using where +1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Rowid-ordered scan explain select * from t1 where a between 2 and 3 or b is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range idx idx 4 NULL 2 Using where +1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Rowid-ordered scan drop table t1; select cast(NULL as signed); cast(NULL as signed) diff --git a/mysql-test/r/null_key.result b/mysql-test/r/null_key.result index 58c587fe588..db2f662eeac 100644 --- a/mysql-test/r/null_key.result +++ b/mysql-test/r/null_key.result @@ -178,12 +178,12 @@ create table t2 (a int); insert into t2 values (7),(8); explain select * from t2 straight_join t1 where t1.a=t2.a and b is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t1 ref a,b a 10 test.t2.a,const 2 Using where; Using index drop index b on t1; explain select * from t2,t1 where t1.a=t2.a and b is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t1 ref a a 10 test.t2.a,const 2 Using where; Using index select * from t2,t1 where t1.a=t2.a and b is null; a a b @@ -191,7 +191,7 @@ a a b 8 8 NULL explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t1 ref_or_null a a 10 test.t2.a,const 4 Using where; Using index select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null); a a b @@ -258,7 +258,7 @@ INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4 INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL); explain select id from t1 where uniq_id is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref idx1 idx1 5 const 5 Using where +1 SIMPLE t1 ref idx1 idx1 5 const 5 Using index condition explain select id from t1 where uniq_id =1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const idx1 idx1 5 const 1 @@ -407,8 +407,8 @@ EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 ref idx idx 5 test.t1.a 1 -1 SIMPLE t3 ref idx idx 5 test.t2.b 1 Using index +1 SIMPLE t2 ref idx idx 5 test.t1.a 1 Using where +1 SIMPLE t3 ref idx idx 5 test.t2.b 1 Using where; Using index FLUSH STATUS ; SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b; @@ -447,3 +447,15 @@ a b a b 3 12 0 12 drop table t1, t2; End of 5.0 tests +# +# BUG#727667 Wrong result with OR + NOT NULL in maria-5.3 +# +CREATE TABLE t1 ( +f3 int(11), +f10 varchar(1), +KEY (f3) +); +INSERT INTO t1 VALUES ('9','k'),(NULL,'r'); +SELECT * FROM t1 WHERE (f3 = 83) OR (f10 = 'z' AND f3 IS NULL); +f3 f10 +DROP TABLE t1; diff --git a/mysql-test/r/optimizer_switch.result b/mysql-test/r/optimizer_switch.result new file mode 100644 index 00000000000..0ae1d54fc7a --- /dev/null +++ b/mysql-test/r/optimizer_switch.result @@ -0,0 +1,102 @@ +# +# Generic @@optimizer_switch tests +# +# +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='index_merge=off,index_merge_union=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='index_merge_union=on'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,index_merge_sort_union=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch=4; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of '4' +set optimizer_switch=NULL; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'NULL' +set optimizer_switch='default,index_merge'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge' +set optimizer_switch='index_merge=index_merge'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=index_merge' +set optimizer_switch='index_merge=on,but...'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'but...' +set optimizer_switch='index_merge='; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=' +set optimizer_switch='index_merge'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge' +set optimizer_switch='on'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'on' +set optimizer_switch='index_merge=on,index_merge=off'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=off' +set optimizer_switch='index_merge_union=on,index_merge_union=default'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge_union=default' +set optimizer_switch='default,index_merge=on,index_merge=off,default'; +ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'index_merge=off,default' +set optimizer_switch=default; +set optimizer_switch='index_merge=off,index_merge_union=off,default'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch=default; +select @@global.optimizer_switch; +@@global.optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set @@global.optimizer_switch=default; +select @@global.optimizer_switch; +@@global.optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +# +# Check index_merge's @@optimizer_switch flags +# +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on + +BUG#37120 optimizer_switch allowable values not according to specification + +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,materialization=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=off,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,semijoin=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,loosescan=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=off,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,semijoin=off,materialization=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=off,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,materialization=off,semijoin=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=off,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,semijoin=off,materialization=off,loosescan=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=off,materialization=off,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,semijoin=off,loosescan=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=off,materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch='default,materialization=off,loosescan=off'; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=off,materialization=off,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on +set optimizer_switch=default; +select @@optimizer_switch; +@@optimizer_switch +index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,firstmatch=on,loosescan=on,materialization=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr_sort_keys=on,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on diff --git a/mysql-test/r/order_by.result b/mysql-test/r/order_by.result index 90b03711191..704e5cd92c9 100644 --- a/mysql-test/r/order_by.result +++ b/mysql-test/r/order_by.result @@ -1,4 +1,5 @@ drop table if exists t1,t2,t3; +call mtr.add_suppression("Out of sort memory; increase server sort buffer size"); CREATE TABLE t1 ( id int(6) DEFAULT '0' NOT NULL, idservice int(5), @@ -514,7 +515,7 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 2 test.t1.skr 1 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 2 test.t1.skr 1 Using index condition drop table t1,t2,t3; CREATE TABLE t1 ( `titre` char(80) NOT NULL default '', @@ -607,9 +608,14 @@ FieldKey LongVal StringVal 1 0 2 1 1 3 1 2 1 -EXPLAIN SELECT * FROM t1 WHERE FieldKey > '2' ORDER BY LongVal; +DS-MRR: use two IGNORE INDEX queries, otherwise we get cost races, because +DS-MRR: records_in_range/read_time return the same numbers for all three indexes +EXPLAIN SELECT * FROM t1 IGNORE INDEX (LongField, StringField) WHERE FieldKey > '2' ORDER BY LongVal; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range FieldKey FieldKey 38 NULL 4 Using index condition; Rowid-ordered scan; Using filesort +EXPLAIN SELECT * FROM t1 IGNORE INDEX (FieldKey, LongField) WHERE FieldKey > '2' ORDER BY LongVal; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range FieldKey,LongField,StringField FieldKey 38 NULL 4 Using where; Using filesort +1 SIMPLE t1 range StringField StringField 38 NULL 4 Using where; Using filesort SELECT * FROM t1 WHERE FieldKey > '2' ORDER BY LongVal; FieldKey LongVal StringVal 3 1 2 @@ -638,7 +644,7 @@ create table t1(a int, b int, index(b)); insert into t1 values (2, 1), (1, 1), (4, NULL), (3, NULL), (6, 2), (5, 2); explain select * from t1 where b=1 or b is null order by a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref_or_null b b 5 const 3 Using where; Using filesort +1 SIMPLE t1 ref_or_null b b 5 const 3 Using index condition; Using filesort select * from t1 where b=1 or b is null order by a; a b 1 1 @@ -647,7 +653,7 @@ a b 4 NULL explain select * from t1 where b=2 or b is null order by a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref_or_null b b 5 const 4 Using where; Using filesort +1 SIMPLE t1 ref_or_null b b 5 const 4 Using index condition; Using filesort select * from t1 where b=2 or b is null order by a; a b 3 NULL @@ -1004,7 +1010,7 @@ t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) ORDER BY c; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using temporary; Using filesort -1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 Using where SELECT t2.b as c FROM t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) ORDER BY c; @@ -1107,7 +1113,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index k2 k3 5 NULL 73 Using where EXPLAIN SELECT id,c3 FROM t2 WHERE c2 BETWEEN 20 AND 30 ORDER BY c3 LIMIT 4000; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 range k2 k2 5 NULL 386 Using where; Using filesort +1 SIMPLE t2 range k2 k2 5 NULL 386 Using index condition; Rowid-ordered scan; Using filesort SELECT id,c3 FROM t2 WHERE c2=11 ORDER BY c3 LIMIT 20; id c3 6 14 @@ -1421,14 +1427,13 @@ DROP TABLE t1; # create table t1(a int, b tinytext); insert into t1 values (1,2),(3,2); -set session sort_buffer_size= 30000; +set session sort_buffer_size= 1000; Warnings: -Warning 1292 Truncated incorrect sort_buffer_size value: '30000' +Warning 1292 Truncated incorrect sort_buffer_size value: '1000' set session max_sort_length= 2180; select * from t1 order by b; ERROR HY001: Out of sort memory; increase server sort buffer size drop table t1; -call mtr.add_suppression("Out of sort memory; increase server sort buffer size"); # # Bug #39844: Query Crash Mysql Server 5.0.67 # @@ -1485,8 +1490,8 @@ SELECT d FROM t1, t2 WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' ORDER BY t2.c LIMIT 1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a,b b 4 const 4 Using where; Using temporary; Using filesort -1 SIMPLE t2 ref a,b,c a 40 test.t1.a,const 11 Using where +1 SIMPLE t1 ref a,b b 4 const 4 Using index condition; Using where; Using temporary; Using filesort +1 SIMPLE t2 ref a,b,c a 40 test.t1.a,const 11 Using index condition SELECT d FROM t1, t2 WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' ORDER BY t2.c LIMIT 1; @@ -1504,6 +1509,24 @@ WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' ORDER BY t2.c LIMIT 1; d 52.5 +SELECT t1.*,t2.* FROM t1, t2 +WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' +ORDER BY t2.c LIMIT 5; +a b a b c d +ppfcz1 DE ppfcz1 14 6 52.5 +ppfcz1 DE ppfcz1 14 7 55.5 +ppfcz1 DE ppfcz1 14 8 57.5 +ppfcz1 DE ppfcz1 14 9 59.5 +ppfcz1 DE ppfcz1 14 10 61.5 +SELECT t1.*, t2.* FROM t3 AS t1, t2 AS t2 +WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' +ORDER BY t2.c LIMIT 5; +a b a b c d +ppfcz1 DE ppfcz1 14 6 52.5 +ppfcz1 DE ppfcz1 14 7 55.5 +ppfcz1 DE ppfcz1 14 8 57.5 +ppfcz1 DE ppfcz1 14 9 59.5 +ppfcz1 DE ppfcz1 14 10 61.5 DROP TABLE t1,t2,t3; CREATE TABLE t1 ( id1 INT NULL, @@ -1603,20 +1626,20 @@ INSERT INTO t2 SELECT a+4, b FROM t2; EXPLAIN SELECT * FROM t1 FORCE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 5 NULL 2 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 10 +1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) # should have "using filesort" EXPLAIN SELECT * FROM t1 USE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 5 NULL 2 Using where; Using temporary; Using filesort -1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer +1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) # should have "using filesort" EXPLAIN SELECT * FROM t1 FORCE INDEX FOR JOIN (a), t2 WHERE t1.a < 2 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 5 NULL 2 Using where; Using temporary; Using filesort -1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer +1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) DROP TABLE t1, t2; # # Bug #50394: Regression in EXPLAIN with index scan, LIMIT, GROUP BY and @@ -1640,6 +1663,36 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using where DROP TABLE t1, t2; # +# Bug #707848: WHERE condition with OR + ORDER BY + field substitution +# +CREATE TABLE t1 (a int PRIMARY KEY); +INSERT INTO t1 VALUES +(9), (7), (11), (15), (2), (4), (1), (5), (14), (54), (3), (8); +EXPLAIN EXTENDED +SELECT * FROM t1 r JOIN t1 s ON r.a = s.a +WHERE s.a IN (2,9) OR s.a < 100 AND s.a != 0 +ORDER BY 1 LIMIT 10; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE r index PRIMARY PRIMARY 4 NULL 10 120.00 Using where; Using index +1 SIMPLE s eq_ref PRIMARY PRIMARY 4 test.r.a 1 100.00 Using index +Warnings: +Note 1003 select `test`.`r`.`a` AS `a`,`test`.`s`.`a` AS `a` from `test`.`t1` `r` join `test`.`t1` `s` where ((`test`.`s`.`a` = `test`.`r`.`a`) and ((`test`.`r`.`a` in (2,9)) or ((`test`.`r`.`a` < 100) and (`test`.`r`.`a` <> 0)))) order by 1 limit 10 +SELECT * FROM t1 r JOIN t1 s ON r.a = s.a +WHERE s.a IN (2,9) OR s.a < 100 AND s.a != 0 +ORDER BY 1 LIMIT 10; +a a +1 1 +2 2 +3 3 +4 4 +5 5 +7 7 +8 8 +9 9 +11 11 +14 14 +DROP TABLE t1; +# # Bug #59110: Memory leak of QUICK_SELECT_I allocated memory # and # Bug #59308: Incorrect result for diff --git a/mysql-test/r/partition_pruning.result b/mysql-test/r/partition_pruning.result index 01ae3876fd0..75097b8d411 100644 --- a/mysql-test/r/partition_pruning.result +++ b/mysql-test/r/partition_pruning.result @@ -771,7 +771,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; id select_type table partitions type possible_keys key key_len ref rows Extra -1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index # Disabling warnings for the invalid date EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; id select_type table partitions type possible_keys key key_len ref rows Extra @@ -1100,7 +1100,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; id select_type table partitions type possible_keys key key_len ref rows Extra -1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index # Disabling warnings for the invalid date EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; id select_type table partitions type possible_keys key key_len ref rows Extra @@ -2537,15 +2537,15 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 1 SIMPLE t2 p0,p1,p2 ALL NULL NULL NULL NULL 510 Using where explain partitions select * from t2 where b = 4; id select_type table partitions type possible_keys key key_len ref rows Extra -1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where +1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 explain extended select * from t2 where b = 6; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t2 ref b b 5 const 76 100.00 Using where +1 SIMPLE t2 ref b b 5 const 76 100.00 Warnings: Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = 6) explain partitions select * from t2 where b = 6; id select_type table partitions type possible_keys key key_len ref rows Extra -1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where +1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 explain extended select * from t2 where b in (1,3,5); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL b NULL NULL NULL 910 40.66 Using where diff --git a/mysql-test/r/pool_of_threads.result b/mysql-test/r/pool_of_threads.result index 42460a8040c..74ea7ba12eb 100644 --- a/mysql-test/r/pool_of_threads.result +++ b/mysql-test/r/pool_of_threads.result @@ -183,37 +183,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1389,15 +1389,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1413,15 +1413,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1429,7 +1429,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result index b3f4ad017d3..e13790f8eaf 100644 --- a/mysql-test/r/ps.result +++ b/mysql-test/r/ps.result @@ -149,6 +149,8 @@ c29 longblob, c30 longtext, c31 enum('one', 'two', 'three'), c32 set('monday', 'tuesday', 'wednesday') ) engine = MYISAM ; create table t2 like t1; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ; prepare stmt1 from @stmt ; execute stmt1 ; @@ -177,6 +179,7 @@ id select_type table type possible_keys key key_len ref rows Extra 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables deallocate prepare stmt1; drop tables t1,t2; +set @@optimizer_switch=@save_optimizer_switch; set @arg00=1; prepare stmt1 from ' create table t1 (m int) as select 1 as m ' ; execute stmt1 ; @@ -3010,13 +3013,13 @@ PREPARE stmt FROM 'EXPLAIN EXTENDED SELECT 1 FROM t1 RIGHT JOIN t1 t2 ON 1'; EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select 1 AS `1` from `test`.`t1` `t2` left join `test`.`t1` on(1) where 1 EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 -1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select 1 AS `1` from `test`.`t1` `t2` left join `test`.`t1` on(1) where 1 DEALLOCATE PREPARE stmt; diff --git a/mysql-test/r/ps_1general.result b/mysql-test/r/ps_1general.result index 8d578794d6d..f280bd93ffc 100644 --- a/mysql-test/r/ps_1general.result +++ b/mysql-test/r/ps_1general.result @@ -465,9 +465,9 @@ def key 253 64 7 Y 0 31 8 def key_len 253 4096 1 Y 0 31 8 def ref 253 2048 0 Y 0 31 8 def rows 8 10 1 Y 32928 0 63 -def Extra 253 255 27 N 1 31 8 +def Extra 253 255 57 N 1 31 8 id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using filesort +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using index condition; Rowid-ordered scan; Using filesort drop table if exists t2; create table t2 (id smallint, name varchar(20)) ; prepare stmt1 from ' insert into t2 values(?, ?) ' ; diff --git a/mysql-test/r/ps_2myisam.result b/mysql-test/r/ps_2myisam.result index 528e66650cd..751a545d988 100644 --- a/mysql-test/r/ps_2myisam.result +++ b/mysql-test/r/ps_2myisam.result @@ -1509,8 +1509,8 @@ prepare stmt1 from 'insert into t1 values(?,?),(?,?)'; execute stmt1 using @arg00, @arg01, @arg02, @arg03 ; select a,b from t1 where a in (@arg00,@arg02) ; a b -81 8-1 82 8-2 +81 8-1 set @arg00=9 ; set @arg01='nine' ; prepare stmt1 from 'insert into t1 set a=?, b=? '; diff --git a/mysql-test/r/range.result b/mysql-test/r/range.result index ae63edf87b9..eb0c009d92a 100644 --- a/mysql-test/r/range.result +++ b/mysql-test/r/range.result @@ -220,31 +220,31 @@ insert into t1 (x) values (1),(2),(3),(4),(5),(6),(7),(8),(9); update t1 set y=x; explain select * from t1, t1 t2 where t1.y = 8 and t2.x between 7 and t1.y+0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 2 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select * from t1, t1 t2 where t1.y = 8 and t2.x >= 7 and t2.x <= t1.y+0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 2 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select * from t1, t1 t2 where t1.y = 2 and t2.x between t1.y-1 and t1.y+1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 3 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= t1.y-1 and t2.x <= t1.y+1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 3 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select * from t1, t1 t2 where t1.y = 2 and t2.x between 0 and t1.y; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 2 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= 0 and t2.x <= t1.y; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref y y 5 const 1 Using where -1 SIMPLE t2 range x x 5 NULL 2 Using where; Using join buffer +1 SIMPLE t1 ref y y 5 const 1 +1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join) explain select count(*) from t1 where x in (1); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref x x 5 const 1 Using where; Using index +1 SIMPLE t1 ref x x 5 const 1 Using index explain select count(*) from t1 where x in (1,2); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index x x 5 NULL 9 Using where; Using index @@ -256,12 +256,12 @@ INSERT INTO t2 VALUES (0),(0),(1),(1),(2),(2); explain select * from t1, t2 where (t1.key1 <t2.keya + 1) and t2.keya=3; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ref j1 j1 4 const 1 Using index -1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer +1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer (flat, BNL join) explain select * from t1 force index(i1), t2 force index(j1) where (t1.key1 <t2.keya + 1) and t2.keya=3; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ref j1 j1 4 const 1 Using index -1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer +1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer (flat, BNL join) DROP TABLE t1,t2; CREATE TABLE t1 ( a int(11) default NULL, @@ -276,7 +276,7 @@ INSERT INTO t1 VALUES (33,5),(33,5),(33,5),(33,5),(34,5),(35,5); EXPLAIN SELECT * FROM t1 WHERE a IN(1,2) AND b=5; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a,b a 5 NULL 2 Using where +1 SIMPLE t1 range a,b a 5 NULL 2 Using index condition; Using where; Rowid-ordered scan SELECT * FROM t1 WHERE a IN(1,2) AND b=5; a b DROP TABLE t1; @@ -421,19 +421,19 @@ test.t1 analyze status OK test.t2 analyze status Table is already up to date explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using where +1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Rowid-ordered scan 1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38 explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using where +1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Rowid-ordered scan 1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38 explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using where +1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Rowid-ordered scan 1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38 explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid != 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using where +1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Rowid-ordered scan 1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38 select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0; id name uid id name uid @@ -615,13 +615,13 @@ INSERT INTO t1 (a) VALUES ('111'),('222'),('222'),('222'),('222'),('444'),('aaa'),('AAA'),('bbb'); explain select * from t1 where a='aaa'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a a 11 const 2 Using where +1 SIMPLE t1 ref a a 11 const 2 Using index condition explain select * from t1 where a=binary 'aaa'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 11 NULL 2 Using where +1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Rowid-ordered scan explain select * from t1 where a='aaa' collate latin1_bin; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 11 NULL 2 Using where +1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Rowid-ordered scan explain select * from t1 where a='aaa' collate latin1_german1_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL a NULL NULL NULL 9 Using where @@ -704,7 +704,7 @@ WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND v.oxrootid ='d8c4177d09f8b11f5.52725521' AND s.oxleft > v.oxleft AND s.oxleft < v.oxright; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE v ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 Using where +1 SIMPLE v ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 Using index condition 1 SIMPLE s ALL OXLEFT NULL NULL NULL 6 Range checked for each record (index map: 0x4) SELECT s.oxid FROM t1 v, t1 s WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND @@ -878,10 +878,10 @@ INSERT INTO t1 VALUES (55,'C'), (56,'C'), (57,'C'), (58,'C'), (59,'C'), (60,'C'); EXPLAIN SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range status status 23 NULL 11 Using where +1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE status NOT IN ('A','B'); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range status status 23 NULL 11 Using where +1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B'; id status 53 C @@ -910,10 +910,10 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 range status status 23 NULL 11 Using where; Using index EXPLAIN SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range status status 23 NULL 10 Using where +1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range status status 23 NULL 10 Using where +1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B'; id status 53 C @@ -1014,20 +1014,20 @@ create table t2 (a varchar(10), filler char(200), key(a)); insert into t2 select * from t1; explain select * from t1 where a between 'a' and 'a '; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 13 NULL # Using where +1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan explain select * from t1 where a = 'a' or a='a '; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 13 NULL # Using where +1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan explain select * from t2 where a between 'a' and 'a '; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref a a 13 const # Using where +1 SIMPLE t2 ref a a 13 const # Using index condition explain select * from t2 where a = 'a' or a='a '; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref a a 13 const # Using where +1 SIMPLE t2 ref a a 13 const # Using index condition update t1 set a='b' where a<>'a'; explain select * from t1 where a not between 'b' and 'b'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range a a 13 NULL # Using where +1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan select a, hex(filler) from t1 where a not between 'b' and 'b'; a hex(filler) a 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 @@ -1071,10 +1071,10 @@ id b c 0 3 4 EXPLAIN SELECT * FROM t1 WHERE b<=3 AND 3<=c; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where +1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using index condition; Using where; Rowid-ordered scan EXPLAIN SELECT * FROM t1 WHERE 3 BETWEEN b AND c; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where +1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where; Rowid-ordered scan SELECT * FROM t1 WHERE 0 < b OR 0 > c; id b c 0 3 4 @@ -1103,7 +1103,7 @@ INSERT INTO t1 VALUES ('A2','2005-12-01 08:00:00',1000); EXPLAIN SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref PRIMARY PRIMARY 20 const 2 Using where +1 SIMPLE t1 ref PRIMARY PRIMARY 20 const 2 Using index condition Warnings: Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1 Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1 @@ -1151,7 +1151,7 @@ INSERT INTO t1 VALUES This must use range access: explain select * from t1 where dateval >= '2007-01-01 00:00:00' and dateval <= '2007-01-02 23:59:59'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range dateval dateval 4 NULL 2 Using where +1 SIMPLE t1 range dateval dateval 4 NULL 2 Using index condition; Rowid-ordered scan drop table t1; CREATE TABLE t1 ( a varchar(32), index (a) @@ -1217,7 +1217,7 @@ Z In following EXPLAIN the access method should be ref, #rows~=500 (and not 2) explain select * from t2 where a=1000 and b<11; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref a a 5 const 502 Using where +1 SIMPLE t2 ref a a 5 const 502 Using index condition drop table t1, t2; CREATE TABLE t1( a INT, b INT, KEY( a, b ) ); CREATE TABLE t2( a INT, b INT, KEY( a, b ) ); @@ -1689,7 +1689,7 @@ pk i4 EXPLAIN SELECT * FROM t1 WHERE 10 BETWEEN 10 AND i4; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range i4_uq i4_uq 5 NULL 3 Using where +1 SIMPLE t1 range i4_uq i4_uq 5 NULL 3 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE 10 BETWEEN 10 AND i4; pk i4 1 10 @@ -1698,7 +1698,7 @@ pk i4 EXPLAIN SELECT * FROM t1 WHERE 10 BETWEEN i4 AND 10; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range i4_uq i4_uq 5 NULL 1 Using where +1 SIMPLE t1 range i4_uq i4_uq 5 NULL 1 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE 10 BETWEEN i4 AND 10; pk i4 1 10 @@ -1732,7 +1732,7 @@ pk i4 EXPLAIN SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 99999999999999999; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range i4_uq i4_uq 5 NULL 2 Using where +1 SIMPLE t1 range i4_uq i4_uq 5 NULL 2 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 99999999999999999; pk i4 1 10 @@ -1747,7 +1747,7 @@ pk i4 EXPLAIN SELECT * FROM t1 WHERE i4 BETWEEN 10 AND '20'; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range i4_uq i4_uq 5 NULL 1 Using where +1 SIMPLE t1 range i4_uq i4_uq 5 NULL 1 Using index condition; Rowid-ordered scan SELECT * FROM t1 WHERE i4 BETWEEN 10 AND '20'; pk i4 1 10 @@ -1756,14 +1756,14 @@ EXPLAIN SELECT * FROM t1, t1 as t2 WHERE t2.pk BETWEEN t1.i4 AND t1.i4; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL i4_uq NULL NULL NULL 3 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 Using index condition SELECT * FROM t1, t1 as t2 WHERE t2.pk BETWEEN t1.i4 AND t1.i4; pk i4 pk i4 EXPLAIN SELECT * FROM t1, t1 as t2 WHERE t1.i4 BETWEEN t2.pk AND t2.pk; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL i4_uq NULL NULL NULL 3 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 Using index condition SELECT * FROM t1, t1 as t2 WHERE t1.i4 BETWEEN t2.pk AND t2.pk; pk i4 pk i4 DROP TABLE t1; diff --git a/mysql-test/r/range_vs_index_merge.result b/mysql-test/r/range_vs_index_merge.result new file mode 100644 index 00000000000..07b54400b9f --- /dev/null +++ b/mysql-test/r/range_vs_index_merge.result @@ -0,0 +1,1380 @@ +DROP TABLE IF EXISTS t1,t2,t3,t4; +DROP DATABASE IF EXISTS world; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +); +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +SELECT COUNT(*) FROM Country; +COUNT(*) +239 +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM CountryLanguage; +COUNT(*) +984 +CREATE INDEX Name ON City(Name); +set session optimizer_switch='index_merge_sort_intersection=off'; +EXPLAIN +SELECT * FROM City +WHERE (Population >= 100000 OR Name LIKE 'P%' OR Population < 100000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ALL Population,Name NULL NULL NULL 4079 Using where +EXPLAIN +SELECT * FROM City +WHERE (Population >= 100000 OR Name LIKE 'P%') AND Country='CAN' OR +(Population < 100000 OR Name Like 'T%') AND Country='ARG'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Country 3 NULL 104 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE Population < 200000 AND Name LIKE 'P%' AND +(Population > 300000 OR Name LIKE 'T%') AND +(Population < 100000 OR Name LIKE 'Pa%'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Name Name 35 NULL 135 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE Population > 100000 AND Name LIKE 'Aba%' OR +Country IN ('CAN', 'ARG') AND ID < 3800 OR +Country < 'U' AND Name LIKE 'Zhu%' OR +ID BETWEEN 3800 AND 3810; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,PRIMARY 35,3,4 NULL 132 Using sort_union(Name,Country,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE (Population > 101000 AND Population < 115000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 459 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,Name Name,Country 35,3 NULL 172 Using sort_union(Name,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Country 35,3 NULL 172 Using sort_union(Name,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Population 4 NULL 39 Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +ID Name Country Population +403 Catanduva BRA 107761 +412 Cachoeirinha BRA 103240 +636 Bilbays EGY 113608 +637 Mit Ghamr EGY 101801 +701 Tarragona ESP 113016 +702 Lleida (Lérida) ESP 112207 +703 Jaén ESP 109247 +704 Ourense (Orense) ESP 109120 +705 Mataró ESP 104095 +706 Algeciras ESP 103106 +707 Marbella ESP 101144 +759 Gonder ETH 112249 +869 Cabuyao PHL 106630 +870 Calapan PHL 105910 +873 Cauayan PHL 103952 +1844 Cape Breton CAN 114733 +1847 Cambridge CAN 109186 +2908 Cajamarca PER 108009 +3003 Caen FRA 113987 +3411 Ceyhan TUR 102412 +3571 Calabozo VEN 107146 +3786 Cam Ranh VNM 114041 +3792 Tartu EST 101246 +4002 Carrollton USA 109576 +4027 Cape Coral USA 102286 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +ID Name Country Population +403 Catanduva BRA 107761 +412 Cachoeirinha BRA 103240 +636 Bilbays EGY 113608 +637 Mit Ghamr EGY 101801 +701 Tarragona ESP 113016 +702 Lleida (Lérida) ESP 112207 +703 Jaén ESP 109247 +704 Ourense (Orense) ESP 109120 +705 Mataró ESP 104095 +706 Algeciras ESP 103106 +707 Marbella ESP 101144 +759 Gonder ETH 112249 +869 Cabuyao PHL 106630 +870 Calapan PHL 105910 +873 Cauayan PHL 103952 +1844 Cape Breton CAN 114733 +1847 Cambridge CAN 109186 +2908 Cajamarca PER 108009 +3003 Caen FRA 113987 +3411 Ceyhan TUR 102412 +3571 Calabozo VEN 107146 +3786 Cam Ranh VNM 114041 +3792 Tartu EST 101246 +4002 Carrollton USA 109576 +4027 Cape Coral USA 102286 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +ID Name Country Population +637 Mit Ghamr EGY 101801 +707 Marbella ESP 101144 +3792 Tartu EST 101246 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +ID Name Country Population +637 Mit Ghamr EGY 101801 +707 Marbella ESP 101144 +3792 Tartu EST 101246 +4032 Cambridge USA 101355 +EXPLAIN +SELECT * FROM City WHERE (Name < 'Ac'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 13 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name < 'Bb'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 208 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Country > 'A' AND Country < 'B'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 104 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'Pb'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'S'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 110000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 103000 AND Population < 104000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 37 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Name 35 NULL 52 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Population 35,4 NULL 50 Using sort_union(Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Country,Name 3,35 NULL 143 Using sort_union(Country,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Country,Population 3,4 NULL 141 Using sort_union(Country,Population); Using where +SELECT * FROM City USE INDEX () +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +EXPLAIN +SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 21 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 201 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ALL PRIMARY NULL NULL NULL 4079 Using where +EXPLAIN +SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'H%' OR Name LIKE 'P%' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 222 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Ha%' OR Name LIKE 'Pa%' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 72 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 21 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where +SELECT * FROM City USE INDEX () +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +100 Paraná ARG 207041 +102 Posadas ARG 201273 +SELECT * FROM City +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +100 Paraná ARG 207041 +102 Posadas ARG 201273 +SELECT * FROM City USE INDEX() +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +129 Oranjestad ABW 29034 +191 Hamilton BMU 1200 +528 Hartlepool GBR 92000 +529 Halifax GBR 91069 +914 Sekondi-Takoradi GHA 103653 +943 Palembang IDN 1222764 +950 Padang IDN 534474 +983 Palu IDN 142800 +984 Pasuruan IDN 134019 +991 Pangkal Pinang IDN 124000 +1003 Pemalang IDN 103500 +1004 Klaten IDN 103300 +1007 Palangka Raya IDN 99693 +1020 Padang Sidempuan IDN 91200 +1045 Patna IND 917243 +1114 Panihati IND 275990 +1129 Patiala IND 238368 +1142 Panipat IND 215218 +1159 Parbhani IND 190255 +1231 Pali IND 136842 +1263 Pathankot IND 123930 +1265 Palghat (Palakkad) IND 123289 +1293 Pallavaram IND 111866 +1319 Tellicherry (Thalassery) IND 103579 +1339 Palayankottai IND 97662 +1345 Patan IND 96109 +1436 Marv Dasht IRN 103579 +1468 Palermo ITA 683794 +1478 Padova ITA 211391 +1484 Parma ITA 168717 +SELECT * FROM City +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +129 Oranjestad ABW 29034 +191 Hamilton BMU 1200 +528 Hartlepool GBR 92000 +529 Halifax GBR 91069 +914 Sekondi-Takoradi GHA 103653 +943 Palembang IDN 1222764 +950 Padang IDN 534474 +983 Palu IDN 142800 +984 Pasuruan IDN 134019 +991 Pangkal Pinang IDN 124000 +1003 Pemalang IDN 103500 +1004 Klaten IDN 103300 +1007 Palangka Raya IDN 99693 +1020 Padang Sidempuan IDN 91200 +1045 Patna IND 917243 +1114 Panihati IND 275990 +1129 Patiala IND 238368 +1142 Panipat IND 215218 +1159 Parbhani IND 190255 +1231 Pali IND 136842 +1263 Pathankot IND 123930 +1265 Palghat (Palakkad) IND 123289 +1293 Pallavaram IND 111866 +1319 Tellicherry (Thalassery) IND 103579 +1339 Palayankottai IND 97662 +1345 Patan IND 96109 +1436 Marv Dasht IRN 103579 +1468 Palermo ITA 683794 +1478 Padova ITA 211391 +1484 Parma ITA 168717 +SELECT * FROM City USE INDEX () +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +100 Paraná ARG 207041 +129 Oranjestad ABW 29034 +167 Jamalpur BGD 103556 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +191 Hamilton BMU 1200 +SELECT * FROM City +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +100 Paraná ARG 207041 +129 Oranjestad ABW 29034 +167 Jamalpur BGD 103556 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +191 Hamilton BMU 1200 +EXPLAIN +SELECT * FROM City WHERE Population > 101000 AND Population < 102000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Population > 101000 AND Population < 110000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country < 'C'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 436 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country < 'AGO'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 6 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name BETWEEN 'P' AND 'S'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name BETWEEN 'P' AND 'Pb'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3400 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 401 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'P%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Country,Name,Population 3,35,4 NULL 84 Using sort_union(Country,Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Country,Name,PRIMARY 3,35,4 NULL 56 Using sort_union(Country,Name,PRIMARY); Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +ID Name Country Population +169 Naogaon BGD 101266 +205 Francistown BWA 101805 +417 Itaituba BRA 101320 +418 Araras BRA 101046 +751 Potchefstroom ZAF 101817 +2909 Puno PER 101578 +3463 Pavlograd UKR 127000 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +ID Name Country Population +169 Naogaon BGD 101266 +205 Francistown BWA 101805 +417 Itaituba BRA 101320 +418 Araras BRA 101046 +751 Potchefstroom ZAF 101817 +2909 Puno PER 101578 +3463 Pavlograd UKR 127000 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +ID Name Country Population +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +ID Name Country Population +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +CREATE INDEX CountryPopulation ON City(Country,Population); +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Pas%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 5 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'P%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 103000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation Country 3 const 267 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation Country 3 const 6 Using index condition +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name,CountryPopulation CountryPopulation,Name 7,35 NULL 15 Using sort_union(CountryPopulation,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 6 Using index condition; Using where +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +ID Name Country Population +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +4023 Gary USA 102746 +4024 Berkeley USA 102743 +4025 Santa Clara USA 102361 +4026 Green Bay USA 102313 +4027 Cape Coral USA 102286 +4028 Arvada USA 102153 +4029 Pueblo USA 102121 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +ID Name Country Population +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +4023 Gary USA 102746 +4024 Berkeley USA 102743 +4025 Santa Clara USA 102361 +4026 Green Bay USA 102313 +4027 Cape Coral USA 102286 +4028 Arvada USA 102153 +4029 Pueblo USA 102121 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +ID Name Country Population +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +ID Name Country Population +CREATE INDEX CountryName ON City(Country,Name); +EXPLAIN +SELECT * FROM City WHERE Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 267 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName CountryName 3 const 5 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='BRA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName CountryName 3 const 221 Using index condition +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4025 AND 4035; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4028 AND 4032; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 5 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3500 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 301 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4000 AND 4300; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 80 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 250 and 260 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 103000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Pa%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 41 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryPopulation,PRIMARY 7,4 NULL 14 Using sort_union(CountryPopulation,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName,PRIMARY 38,4 NULL 11 Using sort_union(CountryName,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) OR +ID BETWEEN 3500 AND 3800) AND Country='FIN' + AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 3 const 5 Using index condition; Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='FIN' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='FIN' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryPopulation,PRIMARY,CountryName 7,4,38 NULL 35 Using sort_union(CountryPopulation,PRIMARY,CountryName); Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +ID Name Country Population +250 Mauá BRA 375055 +251 CarapicuÃba BRA 357552 +252 Olinda BRA 354732 +253 Campina Grande BRA 352497 +254 São José do Rio Preto BRA 351944 +255 Caxias do Sul BRA 349581 +256 Moji das Cruzes BRA 339194 +257 Diadema BRA 335078 +258 Aparecida de Goiânia BRA 324662 +259 Piracicaba BRA 319104 +260 Cariacica BRA 319033 +285 Paulista BRA 248473 +339 Passo Fundo BRA 166343 +364 ParnaÃba BRA 129756 +372 Paranaguá BRA 126076 +379 Palmas BRA 121919 +386 Patos de Minas BRA 119262 +424 Passos BRA 98570 +430 Paulo Afonso BRA 97291 +435 Parnamirim BRA 96210 +448 Patos BRA 90519 +451 Palhoça BRA 89465 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +ID Name Country Population +250 Mauá BRA 375055 +251 CarapicuÃba BRA 357552 +252 Olinda BRA 354732 +253 Campina Grande BRA 352497 +254 São José do Rio Preto BRA 351944 +255 Caxias do Sul BRA 349581 +256 Moji das Cruzes BRA 339194 +257 Diadema BRA 335078 +258 Aparecida de Goiânia BRA 324662 +259 Piracicaba BRA 319104 +260 Cariacica BRA 319033 +285 Paulista BRA 248473 +339 Passo Fundo BRA 166343 +364 ParnaÃba BRA 129756 +372 Paranaguá BRA 126076 +379 Palmas BRA 121919 +386 Patos de Minas BRA 119262 +424 Passos BRA 98570 +430 Paulo Afonso BRA 97291 +435 Parnamirim BRA 96210 +448 Patos BRA 90519 +451 Palhoça BRA 89465 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 23 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3798 Phoenix USA 1321045 +DROP INDEX Population ON City; +DROP INDEX Name ON City; +EXPLAIN +SELECT * FROM City +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,CountryPopulation,CountryName CountryPopulation,CountryName 7,38 NULL 10 Using sort_union(CountryPopulation,CountryName); Using where +SELECT * FROM City USE INDEX() +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +EXPLAIN +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,CountryPopulation,CountryName CountryPopulation,CountryName 7,38 NULL 10 Using sort_union(CountryPopulation,CountryName); Using where +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +DROP DATABASE world; +use test; +CREATE TABLE t1 ( +id int(10) unsigned NOT NULL auto_increment, +account_id int(10) unsigned NOT NULL, +first_name varchar(50) default NULL, +middle_name varchar(50) default NULL, +last_name varchar(100) default NULL, +home_address_1 varchar(150) default NULL, +home_city varchar(75) default NULL, +home_state char(2) default NULL, +home_postal_code varchar(50) default NULL, +home_county varchar(75) default NULL, +home_country char(3) default NULL, +work_address_1 varchar(150) default NULL, +work_city varchar(75) default NULL, +work_state char(2) default NULL, +work_postal_code varchar(50) default NULL, +work_county varchar(75) default NULL, +work_country char(3) default NULL, +login varchar(50) NOT NULL, +PRIMARY KEY (id), +KEY login (login,account_id), +KEY account_id (account_id), +KEY user_home_country_indx (home_country), +KEY user_work_country_indx (work_country), +KEY user_home_state_indx (home_state), +KEY user_work_state_indx (work_state), +KEY user_home_city_indx (home_city), +KEY user_work_city_indx (work_city), +KEY user_first_name_indx (first_name), +KEY user_last_name_indx (last_name) +); +insert into t1(account_id, login, home_state, work_state) values +(1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), +(1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'); +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +select count(*) from t1 where account_id = 1; +count(*) +3072 +select * from t1 +where (home_state = 'ia' or work_state='ia') and account_id = 1; +id account_id first_name middle_name last_name home_address_1 home_city home_state home_postal_code home_county home_country work_address_1 work_city work_state work_postal_code work_county work_country login +1 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +2 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +3 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +4 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +5 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +6 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +explain +select * from t1 +where (home_state = 'ia' or work_state='ia') and account_id = 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge account_id,user_home_state_indx,user_work_state_indx user_home_state_indx,user_work_state_indx 3,3 NULL 6 Using union(user_home_state_indx,user_work_state_indx); Using where +drop table t1; +CREATE TABLE t1 ( +c1 int(11) NOT NULL auto_increment, +c2 decimal(10,0) default NULL, +c3 decimal(10,0) default NULL, +c4 decimal(10,0) default NULL, +c5 decimal(10,0) default NULL, +cp decimal(1,0) default NULL, +ce decimal(10,0) default NULL, +cdata char(20), +PRIMARY KEY (c1), +KEY k1 (c2,c3,cp,ce), +KEY k2 (c4,c5,cp,ce) +); +insert into t1 (c2, c3, c4, c5, cp) values(1,1,1,1,1); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,1,1,4); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,2,1,1); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,3,1,4); +insert into t1 (c2, c3, c4, c5, cp) values(3,1,4,1,4); +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +explain +select * from t1 where (c2=1 and c3=1) or (c4=2 and c5=1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 12,12 NULL 2 Using sort_union(k1,k2); Using where +explain +select * from t1 +where (c2=1 and c3=1 and cp=1) or (c4=2 and c5=1 and cp=1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 14,14 NULL 2 Using sort_union(k1,k2); Using where +explain +select * from t1 +where ((c2=1 and c3=1) or (c4=2 and c5=1)) and cp=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 14,14 NULL 2 Using sort_union(k1,k2); Using where +select * from t1 +where (c2=1 and c3=1 and cp=1) or (c4=2 and c5=1 and cp=1); +c1 c2 c3 c4 c5 cp ce cdata +1 1 1 1 1 1 NULL NULL +3 2 1 2 1 1 NULL NULL +select * from t1 +where ((c2=1 and c3=1) or (c4=2 and c5=1)) and cp=1; +c1 c2 c3 c4 c5 cp ce cdata +1 1 1 1 1 1 NULL NULL +3 2 1 2 1 1 NULL NULL +drop table t1; +create table t1 ( +c1 int auto_increment primary key, +c2 char(20), +c3 char (20), +c4 int +); +alter table t1 add key k1 (c2); +alter table t1 add key k2 (c3); +alter table t1 add key k3 (c4); +insert into t1 values(null, 'a', 'b', 0); +insert into t1 values(null, 'c', 'b', 0); +insert into t1 values(null, 'a', 'd', 0); +insert into t1 values(null, 'ccc', 'qqq', 0); +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,1 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,2 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,3 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,4 from t1 where c2 != 'a'; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +select count(*) from t1 where (c2='e' OR c3='q'); +count(*) +0 +select count(*) from t1 where c4 != 0; +count(*) +3840 +explain +select distinct c1 from t1 where (c2='e' OR c3='q'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 21,21 NULL 2 Using union(k1,k2); Using where +explain +select distinct c1 from t1 where (c4!= 0) AND (c2='e' OR c3='q'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2,k3 k1,k2 21,21 NULL 2 Using union(k1,k2); Using where +drop table t1; +create table t1 ( +id int unsigned auto_increment primary key, +c1 char(12), +c2 char(15), +c3 char(1) +); +insert into t1 (c3) values ('1'), ('2'); +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +update t1 set c1=lpad(id+1000, 12, ' '), c2=lpad(id+10000, 15, ' '); +alter table t1 add unique index (c1), add unique index (c2), add index (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +explain +select * from t1 where (c1=' 100000' or c2=' 2000000'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge c1,c2 c1,c2 13,16 NULL 2 Using union(c1,c2); Using where +explain +select * from t1 where (c1=' 100000' or c2=' 2000000') and c3='2'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge c1,c2,c3 c1,c2 13,16 NULL 2 Using union(c1,c2); Using where +select * from t1 where (c1=' 100000' or c2=' 2000000'); +id c1 c2 c3 +select * from t1 where (c1=' 100000' or c2=' 2000000') and c3='2'; +id c1 c2 c3 +drop table t1; +CREATE TABLE t1 ( +a smallint DEFAULT NULL, +pk int NOT NULL AUTO_INCREMENT PRIMARY KEY, +b varchar(10) DEFAULT NULL, +c varchar(64) DEFAULT NULL, +INDEX idx1 (a), +INDEX idx2 (b), +INDEX idx3 (c) +); +SELECT COUNT(*) FROM t1 IGNORE INDEX (idx2,idx3) +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +COUNT(*) +5 +SELECT COUNT(*) FROM t1 +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +COUNT(*) +5 +EXPLAIN +SELECT COUNT(*) FROM t1 +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,idx1,idx2,idx3 idx3,idx2,PRIMARY,idx1 67,13,4,3 NULL 8 Using sort_union(idx3,idx2,PRIMARY,idx1); Using where +DROP TABLE t1; +CREATE TABLE t1 ( +f1 int, f2 int, f3 int, f4 int, f5 int, +PRIMARY KEY (f4), KEY (f1), KEY (f2), KEY (f3) +) ; +INSERT INTO t1 VALUES (0,0,NULL,9,5), (0,0,1,9425,NULL); +SELECT f5 FROM t1 +WHERE f2 != 1 OR f1 IS NULL OR f4 = 4 OR +f2 AND (f4 BETWEEN 6 AND 255 OR f3 IS NULL); +f5 +5 +NULL +DROP TABLE t1; +CREATE TABLE t1 ( +f1 int, f2 int, f3 int, f4 int, +PRIMARY KEY (f1), KEY (f3), KEY (f4) +); +INSERT INTO t1 VALUES (9,0,2,6), (9930,0,0,NULL); +SET SESSION optimizer_switch='index_merge_intersection=off'; +SET SESSION optimizer_switch='index_merge_sort_union=off'; +SET SESSION optimizer_switch='index_merge_union=off'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY,f3,f4 NULL NULL NULL 2 Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch='index_merge_union=on'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY,f3,f4 NULL NULL NULL 2 Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +INSERT INTO t1 VALUES +(93,0,3,6), (9933,0,3,3), (94,0,4,6), (9934,0,4,4), +(95,0,5,6), (9935,0,5,5), (96,0,6,6), (9936,0,6,6), +(97,0,7,6), (9937,0,7,7), (98,0,8,6), (9938,0,8,8), +(99,0,9,6), (9939,0,9,9); +SET SESSION optimizer_switch='index_merge_union=off'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY,f3,f4 NULL NULL NULL 16 Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch='index_merge_union=on'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,f3,f4 f3,PRIMARY,f3 5,4,5 NULL 3 Using union(f3,PRIMARY,f3); Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch=DEFAULT; +DROP TABLE t1; +CREATE TABLE t1 (f1 int) ; +INSERT INTO t1 VALUES (0), (0); +CREATE TABLE t2 (f1 int, f2 int, f3 int, f4 int, INDEX idx (f3,f2)) ; +INSERT INTO t2 VALUES (5,6,0,0), (0,4,0,0); +CREATE TABLE t3 (f1 int, f2 int, INDEX idx1 (f2,f1) , INDEX idx2 (f1)) ; +INSERT INTO t3 VALUES (6,0),( 4,0); +SELECT * FROM t1,t2,t3 +WHERE (t2.f3 = 1 OR t3.f1=t2.f1) AND t3.f1 <> t2.f2 AND t3.f2 = t2.f4; +f1 f1 f2 f3 f4 f1 f2 +DROP TABLE t1,t2,t3; +set session optimizer_switch='index_merge_sort_intersection=default'; diff --git a/mysql-test/r/range_vs_index_merge_innodb.result b/mysql-test/r/range_vs_index_merge_innodb.result new file mode 100644 index 00000000000..2ca8c0ca37a --- /dev/null +++ b/mysql-test/r/range_vs_index_merge_innodb.result @@ -0,0 +1,1382 @@ +SET SESSION STORAGE_ENGINE='InnoDB'; +DROP TABLE IF EXISTS t1,t2,t3,t4; +DROP DATABASE IF EXISTS world; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +); +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +SELECT COUNT(*) FROM Country; +COUNT(*) +239 +SELECT COUNT(*) FROM City; +COUNT(*) +4079 +SELECT COUNT(*) FROM CountryLanguage; +COUNT(*) +984 +CREATE INDEX Name ON City(Name); +set session optimizer_switch='index_merge_sort_intersection=off'; +EXPLAIN +SELECT * FROM City +WHERE (Population >= 100000 OR Name LIKE 'P%' OR Population < 100000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ALL Population,Name NULL NULL NULL 4079 Using where +EXPLAIN +SELECT * FROM City +WHERE (Population >= 100000 OR Name LIKE 'P%') AND Country='CAN' OR +(Population < 100000 OR Name Like 'T%') AND Country='ARG'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Country 3 NULL 106 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE Population < 200000 AND Name LIKE 'P%' AND +(Population > 300000 OR Name LIKE 'T%') AND +(Population < 100000 OR Name LIKE 'Pa%'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Name Name 35 NULL 235 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE Population > 100000 AND Name LIKE 'Aba%' OR +Country IN ('CAN', 'ARG') AND ID < 3800 OR +Country < 'U' AND Name LIKE 'Zhu%' OR +ID BETWEEN 3800 AND 3810; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,PRIMARY 35,3,4 NULL 125 Using sort_union(Name,Country,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE (Population > 101000 AND Population < 115000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 458 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,Name Name,Country 35,3 NULL 213 Using sort_union(Name,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Country 35,3 NULL 213 Using sort_union(Name,Country); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Population 4 NULL 38 Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +ID Name Country Population +403 Catanduva BRA 107761 +412 Cachoeirinha BRA 103240 +636 Bilbays EGY 113608 +637 Mit Ghamr EGY 101801 +701 Tarragona ESP 113016 +702 Lleida (Lérida) ESP 112207 +703 Jaén ESP 109247 +704 Ourense (Orense) ESP 109120 +705 Mataró ESP 104095 +706 Algeciras ESP 103106 +707 Marbella ESP 101144 +759 Gonder ETH 112249 +869 Cabuyao PHL 106630 +870 Calapan PHL 105910 +873 Cauayan PHL 103952 +1844 Cape Breton CAN 114733 +1847 Cambridge CAN 109186 +2908 Cajamarca PER 108009 +3003 Caen FRA 113987 +3411 Ceyhan TUR 102412 +3571 Calabozo VEN 107146 +3786 Cam Ranh VNM 114041 +3792 Tartu EST 101246 +4002 Carrollton USA 109576 +4027 Cape Coral USA 102286 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 115000); +ID Name Country Population +403 Catanduva BRA 107761 +412 Cachoeirinha BRA 103240 +636 Bilbays EGY 113608 +637 Mit Ghamr EGY 101801 +701 Tarragona ESP 113016 +702 Lleida (Lérida) ESP 112207 +703 Jaén ESP 109247 +704 Ourense (Orense) ESP 109120 +705 Mataró ESP 104095 +706 Algeciras ESP 103106 +707 Marbella ESP 101144 +759 Gonder ETH 112249 +869 Cabuyao PHL 106630 +870 Calapan PHL 105910 +873 Cauayan PHL 103952 +1844 Cape Breton CAN 114733 +1847 Cambridge CAN 109186 +2908 Cajamarca PER 108009 +3003 Caen FRA 113987 +3411 Ceyhan TUR 102412 +3571 Calabozo VEN 107146 +3786 Cam Ranh VNM 114041 +3792 Tartu EST 101246 +4002 Carrollton USA 109576 +4027 Cape Coral USA 102286 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +ID Name Country Population +637 Mit Ghamr EGY 101801 +707 Marbella ESP 101144 +3792 Tartu EST 101246 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) +AND (Population > 101000 AND Population < 102000); +ID Name Country Population +637 Mit Ghamr EGY 101801 +707 Marbella ESP 101144 +3792 Tartu EST 101246 +4032 Cambridge USA 101355 +EXPLAIN +SELECT * FROM City WHERE (Name < 'Ac'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 23 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name < 'Bb'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 373 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Country > 'A' AND Country < 'B'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 106 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'Pb'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'S'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 110000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 103000 AND Population < 104000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 36 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population,Country,Name Name 35 NULL 94 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Name,Population 35,4 NULL 59 Using sort_union(Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Country,Name 3,35 NULL 177 Using sort_union(Country,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name Country,Population 3,4 NULL 142 Using sort_union(Country,Population); Using where +SELECT * FROM City USE INDEX () +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City +WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +65 Abu Dhabi ARE 398695 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +SELECT * FROM City USE INDEX () +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +SELECT * FROM City +WHERE (Name < 'Bb' AND (Country > 'A' AND Country < 'B')) OR +(Name BETWEEN 'P' AND 'S' AND (Population > 103000 AND Population < 104000)); +ID Name Country Population +55 Andorra la Vella AND 21189 +65 Abu Dhabi ARE 398695 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +75 Almirante Brown ARG 538918 +85 Avellaneda ARG 353046 +96 BahÃa Blanca ARG 239810 +134 Adelaide AUS 978100 +144 Baku AZE 1787800 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +1003 Pemalang IDN 103500 +2663 RÃo Bravo MEX 103901 +EXPLAIN +SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 20 Using where +EXPLAIN +SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 199 Using where +EXPLAIN +SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 2006 Using where +EXPLAIN +SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'H%' OR Name LIKE 'P%' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 394 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Ha%' OR Name LIKE 'Pa%' ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 133 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 20 Using where +EXPLAIN +SELECT * FROM City +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 188 Using sort_union(Name,Country,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 199 Using where +SELECT * FROM City USE INDEX () +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +100 Paraná ARG 207041 +102 Posadas ARG 201273 +SELECT * FROM City +WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 110) AND +(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +100 Paraná ARG 207041 +102 Posadas ARG 201273 +SELECT * FROM City USE INDEX() +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +129 Oranjestad ABW 29034 +191 Hamilton BMU 1200 +528 Hartlepool GBR 92000 +529 Halifax GBR 91069 +914 Sekondi-Takoradi GHA 103653 +943 Palembang IDN 1222764 +950 Padang IDN 534474 +983 Palu IDN 142800 +984 Pasuruan IDN 134019 +991 Pangkal Pinang IDN 124000 +1003 Pemalang IDN 103500 +1004 Klaten IDN 103300 +1007 Palangka Raya IDN 99693 +1020 Padang Sidempuan IDN 91200 +1045 Patna IND 917243 +1114 Panihati IND 275990 +1129 Patiala IND 238368 +1142 Panipat IND 215218 +1159 Parbhani IND 190255 +1231 Pali IND 136842 +1263 Pathankot IND 123930 +1265 Palghat (Palakkad) IND 123289 +1293 Pallavaram IND 111866 +1319 Tellicherry (Thalassery) IND 103579 +1339 Palayankottai IND 97662 +1345 Patan IND 96109 +1436 Marv Dasht IRN 103579 +1468 Palermo ITA 683794 +1478 Padova ITA 211391 +1484 Parma ITA 168717 +SELECT * FROM City +WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 900 AND 1500) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +129 Oranjestad ABW 29034 +191 Hamilton BMU 1200 +528 Hartlepool GBR 92000 +529 Halifax GBR 91069 +914 Sekondi-Takoradi GHA 103653 +943 Palembang IDN 1222764 +950 Padang IDN 534474 +983 Palu IDN 142800 +984 Pasuruan IDN 134019 +991 Pangkal Pinang IDN 124000 +1003 Pemalang IDN 103500 +1004 Klaten IDN 103300 +1007 Palangka Raya IDN 99693 +1020 Padang Sidempuan IDN 91200 +1045 Patna IND 917243 +1114 Panihati IND 275990 +1129 Patiala IND 238368 +1142 Panipat IND 215218 +1159 Parbhani IND 190255 +1231 Pali IND 136842 +1263 Pathankot IND 123930 +1265 Palghat (Palakkad) IND 123289 +1293 Pallavaram IND 111866 +1319 Tellicherry (Thalassery) IND 103579 +1339 Palayankottai IND 97662 +1345 Patan IND 96109 +1436 Marv Dasht IRN 103579 +1468 Palermo ITA 683794 +1478 Padova ITA 211391 +1484 Parma ITA 168717 +SELECT * FROM City USE INDEX () +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +100 Paraná ARG 207041 +129 Oranjestad ABW 29034 +167 Jamalpur BGD 103556 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +191 Hamilton BMU 1200 +SELECT * FROM City +WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) +OR ((ID BETWEEN 100 AND 200) AND +(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); +ID Name Country Population +1 Kabul AFG 1780000 +2 Qandahar AFG 237500 +3 Herat AFG 186800 +4 Mazar-e-Sharif AFG 127800 +7 Haag NLD 440900 +16 Haarlem NLD 148772 +25 Haarlemmermeer NLD 110722 +33 Willemstad ANT 2345 +34 Tirana ALB 270000 +55 Andorra la Vella AND 21189 +56 Luanda AGO 2022000 +57 Huambo AGO 163100 +58 Lobito AGO 130000 +59 Benguela AGO 128300 +60 Namibe AGO 118200 +61 South Hill AIA 961 +62 The Valley AIA 595 +64 Dubai ARE 669181 +65 Abu Dhabi ARE 398695 +66 Sharja ARE 320095 +67 al-Ayn ARE 225970 +68 Ajman ARE 114395 +100 Paraná ARG 207041 +129 Oranjestad ABW 29034 +167 Jamalpur BGD 103556 +168 Pabna BGD 103277 +189 Parakou BEN 103577 +191 Hamilton BMU 1200 +EXPLAIN +SELECT * FROM City WHERE Population > 101000 AND Population < 102000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Population > 101000 AND Population < 110000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country < 'C'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 446 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country < 'AGO'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Country Country 3 NULL 5 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name BETWEEN 'P' AND 'S'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name BETWEEN 'P' AND 'Pb'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3400 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 944 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using where +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'P%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Country,Name,Population 3,35,4 NULL 114 Using sort_union(Country,Name,Population); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name Country,Name,PRIMARY 3,35,4 NULL 87 Using sort_union(Country,Name,PRIMARY); Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +ID Name Country Population +169 Naogaon BGD 101266 +205 Francistown BWA 101805 +417 Itaituba BRA 101320 +418 Araras BRA 101046 +751 Potchefstroom ZAF 101817 +2909 Puno PER 101578 +3463 Pavlograd UKR 127000 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) AND +(Country < 'C' OR Name BETWEEN 'P' AND 'S')) OR +((ID BETWEEN 3400 AND 3800) AND +(Country < 'AGO' OR Name LIKE 'Pa%')); +ID Name Country Population +169 Naogaon BGD 101266 +205 Francistown BWA 101805 +417 Itaituba BRA 101320 +418 Araras BRA 101046 +751 Potchefstroom ZAF 101817 +2909 Puno PER 101578 +3463 Pavlograd UKR 127000 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +ID Name Country Population +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) AND +(Country < 'AGO' OR Name BETWEEN 'P' AND 'Pb')) OR +((ID BETWEEN 3790 AND 3800) AND +(Country < 'C' OR Name LIKE 'P%')); +ID Name Country Population +168 Pabna BGD 103277 +189 Parakou BEN 103577 +750 Paarl ZAF 105768 +2865 Pak Pattan PAK 107800 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +CREATE INDEX CountryPopulation ON City(Country,Population); +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Pas%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 8 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'P%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 103000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation Country 3 const 274 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation Country 3 const 7 Using index condition +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Population,Country,Name,CountryPopulation CountryPopulation,Name 7,35 NULL 17 Using sort_union(CountryPopulation,Name); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 7 Using index condition; Using where +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +ID Name Country Population +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +4023 Gary USA 102746 +4024 Berkeley USA 102743 +4025 Santa Clara USA 102361 +4026 Green Bay USA 102313 +4027 Cape Coral USA 102286 +4028 Arvada USA 102153 +4029 Pueblo USA 102121 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') +AND Country='USA'; +ID Name Country Population +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +4023 Gary USA 102746 +4024 Berkeley USA 102743 +4025 Santa Clara USA 102361 +4026 Green Bay USA 102313 +4027 Cape Coral USA 102286 +4028 Arvada USA 102153 +4029 Pueblo USA 102121 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +ID Name Country Population +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') +AND Country='FIN'; +ID Name Country Population +CREATE INDEX CountryName ON City(Country,Name); +EXPLAIN +SELECT * FROM City WHERE Country='USA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 274 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='FIN'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 7 Using index condition +EXPLAIN +SELECT * FROM City WHERE Country='BRA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 250 Using index condition +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4025 AND 4035; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4028 AND 4032; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 5 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 3500 AND 3800; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 300 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 4000 AND 4300; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 80 Using where +EXPLAIN +SELECT * FROM City WHERE ID BETWEEN 250 and 260 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using where +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 102000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE (Population > 101000 AND Population < 103000); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City WHERE Name LIKE 'Pa%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryPopulation,PRIMARY 7,4 NULL 13 Using sort_union(CountryPopulation,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 103000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName,PRIMARY 38,4 NULL 10 Using sort_union(CountryName,PRIMARY); Using where +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 110000) OR +ID BETWEEN 3500 AND 3800) AND Country='FIN' + AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName Country 3 const 7 Using index condition; Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4028 AND 4032); +ID Name Country Population +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='FIN' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='FIN' + AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); +ID Name Country Population +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryPopulation,CountryName,PRIMARY 7,38,4 NULL 35 Using sort_union(CountryPopulation,CountryName,PRIMARY); Using where +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +ID Name Country Population +250 Mauá BRA 375055 +251 CarapicuÃba BRA 357552 +252 Olinda BRA 354732 +253 Campina Grande BRA 352497 +254 São José do Rio Preto BRA 351944 +255 Caxias do Sul BRA 349581 +256 Moji das Cruzes BRA 339194 +257 Diadema BRA 335078 +258 Aparecida de Goiânia BRA 324662 +259 Piracicaba BRA 319104 +260 Cariacica BRA 319033 +285 Paulista BRA 248473 +339 Passo Fundo BRA 166343 +364 ParnaÃba BRA 129756 +372 Paranaguá BRA 126076 +379 Palmas BRA 121919 +386 Patos de Minas BRA 119262 +424 Passos BRA 98570 +430 Paulo Afonso BRA 97291 +435 Parnamirim BRA 96210 +448 Patos BRA 90519 +451 Palhoça BRA 89465 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE ((Population > 101000 and Population < 102000) OR +ID BETWEEN 3790 AND 3800) AND Country='USA' + OR (Name LIKE 'Pa%' OR ID BETWEEN 250 AND 260) AND Country='BRA'; +ID Name Country Population +285 Paulista BRA 248473 +339 Passo Fundo BRA 166343 +364 ParnaÃba BRA 129756 +372 Paranaguá BRA 126076 +379 Palmas BRA 121919 +386 Patos de Minas BRA 119262 +424 Passos BRA 98570 +430 Paulo Afonso BRA 97291 +435 Parnamirim BRA 96210 +448 Patos BRA 90519 +451 Palhoça BRA 89465 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +250 Mauá BRA 375055 +251 CarapicuÃba BRA 357552 +252 Olinda BRA 354732 +253 Campina Grande BRA 352497 +254 São José do Rio Preto BRA 351944 +255 Caxias do Sul BRA 349581 +256 Moji das Cruzes BRA 339194 +257 Diadema BRA 335078 +258 Aparecida de Goiânia BRA 324662 +259 Piracicaba BRA 319104 +260 Cariacica BRA 319033 +3793 New York USA 8008278 +3794 Los Angeles USA 3694820 +3795 Chicago USA 2896016 +3796 Houston USA 1953631 +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +3799 San Diego USA 1223400 +3800 Dallas USA 1188580 +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 18 Using index condition; Using where; Rowid-ordered scan +EXPLAIN +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using index condition; Using where; Rowid-ordered scan +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3797 Philadelphia USA 1517550 +3798 Phoenix USA 1321045 +SELECT * FROM City USE INDEX () +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3798 Phoenix USA 1321045 +SELECT * FROM City +WHERE ((Population > 101000 AND Population < 11000) OR +ID BETWEEN 3500 AND 3800) AND Country='USA' + AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300); +ID Name Country Population +3798 Phoenix USA 1321045 +DROP INDEX Population ON City; +DROP INDEX Name ON City; +EXPLAIN +SELECT * FROM City +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,CountryPopulation,CountryName CountryPopulation,CountryName 7,38 NULL 8 Using sort_union(CountryPopulation,CountryName); Using where +SELECT * FROM City USE INDEX() +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE Country='USA' AND Population BETWEEN 101000 AND 102000 OR +Country='USA' AND Name LIKE 'Pa%'; +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +EXPLAIN +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE City index_merge Country,CountryPopulation,CountryName CountryPopulation,CountryName 7,38 NULL 8 Using sort_union(CountryPopulation,CountryName); Using where +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +SELECT * FROM City +WHERE Country='USA' AND +(Population BETWEEN 101000 AND 102000 OR Name LIKE 'Pa%'); +ID Name Country Population +3932 Paterson USA 149222 +3943 Pasadena USA 141674 +3953 Pasadena USA 133936 +3967 Paradise USA 124682 +3986 Palmdale USA 116670 +4030 Sandy USA 101853 +4031 Athens-Clarke County USA 101489 +4032 Cambridge USA 101355 +DROP DATABASE world; +use test; +CREATE TABLE t1 ( +id int(10) unsigned NOT NULL auto_increment, +account_id int(10) unsigned NOT NULL, +first_name varchar(50) default NULL, +middle_name varchar(50) default NULL, +last_name varchar(100) default NULL, +home_address_1 varchar(150) default NULL, +home_city varchar(75) default NULL, +home_state char(2) default NULL, +home_postal_code varchar(50) default NULL, +home_county varchar(75) default NULL, +home_country char(3) default NULL, +work_address_1 varchar(150) default NULL, +work_city varchar(75) default NULL, +work_state char(2) default NULL, +work_postal_code varchar(50) default NULL, +work_county varchar(75) default NULL, +work_country char(3) default NULL, +login varchar(50) NOT NULL, +PRIMARY KEY (id), +KEY login (login,account_id), +KEY account_id (account_id), +KEY user_home_country_indx (home_country), +KEY user_work_country_indx (work_country), +KEY user_home_state_indx (home_state), +KEY user_work_state_indx (work_state), +KEY user_home_city_indx (home_city), +KEY user_work_city_indx (work_city), +KEY user_first_name_indx (first_name), +KEY user_last_name_indx (last_name) +); +insert into t1(account_id, login, home_state, work_state) values +(1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), +(1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'), (1, 'pw', 'ia', 'ia'); +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +insert into t1(account_id, login, home_state, work_state) +select 1, 'pw', 'ak', 'ak' from t1; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +select count(*) from t1 where account_id = 1; +count(*) +3072 +select * from t1 +where (home_state = 'ia' or work_state='ia') and account_id = 1; +id account_id first_name middle_name last_name home_address_1 home_city home_state home_postal_code home_county home_country work_address_1 work_city work_state work_postal_code work_county work_country login +1 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +2 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +3 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +4 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +5 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +6 1 NULL NULL NULL NULL NULL ia NULL NULL NULL NULL NULL ia NULL NULL NULL pw +explain +select * from t1 +where (home_state = 'ia' or work_state='ia') and account_id = 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge account_id,user_home_state_indx,user_work_state_indx user_home_state_indx,user_work_state_indx 3,3 NULL 10 Using union(user_home_state_indx,user_work_state_indx); Using where +drop table t1; +CREATE TABLE t1 ( +c1 int(11) NOT NULL auto_increment, +c2 decimal(10,0) default NULL, +c3 decimal(10,0) default NULL, +c4 decimal(10,0) default NULL, +c5 decimal(10,0) default NULL, +cp decimal(1,0) default NULL, +ce decimal(10,0) default NULL, +cdata char(20), +PRIMARY KEY (c1), +KEY k1 (c2,c3,cp,ce), +KEY k2 (c4,c5,cp,ce) +); +insert into t1 (c2, c3, c4, c5, cp) values(1,1,1,1,1); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,1,1,4); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,2,1,1); +insert into t1 (c2, c3, c4, c5, cp) values(2,1,3,1,4); +insert into t1 (c2, c3, c4, c5, cp) values(3,1,4,1,4); +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +insert into t1 (c2, c3, c4, c5, cp) +select c2, c3, c4, c5, cp from t1 where cp = 4; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +explain +select * from t1 where (c2=1 and c3=1) or (c4=2 and c5=1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 12,12 NULL 2 Using sort_union(k1,k2); Using where +explain +select * from t1 +where (c2=1 and c3=1 and cp=1) or (c4=2 and c5=1 and cp=1); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 14,14 NULL 2 Using sort_union(k1,k2); Using where +explain +select * from t1 +where ((c2=1 and c3=1) or (c4=2 and c5=1)) and cp=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 14,14 NULL 2 Using sort_union(k1,k2); Using where +select * from t1 +where (c2=1 and c3=1 and cp=1) or (c4=2 and c5=1 and cp=1); +c1 c2 c3 c4 c5 cp ce cdata +1 1 1 1 1 1 NULL NULL +3 2 1 2 1 1 NULL NULL +select * from t1 +where ((c2=1 and c3=1) or (c4=2 and c5=1)) and cp=1; +c1 c2 c3 c4 c5 cp ce cdata +1 1 1 1 1 1 NULL NULL +3 2 1 2 1 1 NULL NULL +drop table t1; +create table t1 ( +c1 int auto_increment primary key, +c2 char(20), +c3 char (20), +c4 int +); +alter table t1 add key k1 (c2); +alter table t1 add key k2 (c3); +alter table t1 add key k3 (c4); +insert into t1 values(null, 'a', 'b', 0); +insert into t1 values(null, 'c', 'b', 0); +insert into t1 values(null, 'a', 'd', 0); +insert into t1 values(null, 'ccc', 'qqq', 0); +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3) select c2,c3 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,1 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,2 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,3 from t1 where c2 != 'a'; +insert into t1 (c2,c3,c4) select c2,c3,4 from t1 where c2 != 'a'; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +select count(*) from t1 where (c2='e' OR c3='q'); +count(*) +0 +select count(*) from t1 where c4 != 0; +count(*) +3840 +explain +select distinct c1 from t1 where (c2='e' OR c3='q'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2 k1,k2 21,21 NULL 2 Using union(k1,k2); Using where +explain +select distinct c1 from t1 where (c4!= 0) AND (c2='e' OR c3='q'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge k1,k2,k3 k1,k2 21,21 NULL 2 Using union(k1,k2); Using where +drop table t1; +create table t1 ( +id int unsigned auto_increment primary key, +c1 char(12), +c2 char(15), +c3 char(1) +); +insert into t1 (c3) values ('1'), ('2'); +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +insert into t1 (c3) select c3 from t1; +update t1 set c1=lpad(id+1000, 12, ' '), c2=lpad(id+10000, 15, ' '); +alter table t1 add unique index (c1), add unique index (c2), add index (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +explain +select * from t1 where (c1=' 100000' or c2=' 2000000'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge c1,c2 c1,c2 13,16 NULL 2 Using union(c1,c2); Using where +explain +select * from t1 where (c1=' 100000' or c2=' 2000000') and c3='2'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge c1,c2,c3 c1,c2 13,16 NULL 2 Using union(c1,c2); Using where +select * from t1 where (c1=' 100000' or c2=' 2000000'); +id c1 c2 c3 +select * from t1 where (c1=' 100000' or c2=' 2000000') and c3='2'; +id c1 c2 c3 +drop table t1; +CREATE TABLE t1 ( +a smallint DEFAULT NULL, +pk int NOT NULL AUTO_INCREMENT PRIMARY KEY, +b varchar(10) DEFAULT NULL, +c varchar(64) DEFAULT NULL, +INDEX idx1 (a), +INDEX idx2 (b), +INDEX idx3 (c) +); +SELECT COUNT(*) FROM t1 IGNORE INDEX (idx2,idx3) +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +COUNT(*) +5 +SELECT COUNT(*) FROM t1 +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +COUNT(*) +5 +EXPLAIN +SELECT COUNT(*) FROM t1 +WHERE c = 'i' OR b IN ( 'Arkansas' , 'd' , 'pdib' , 'can' ) OR +(pk BETWEEN 120 AND 79 + 255 OR a IN ( 4 , 179 , 1 ) ) AND a > 8 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,idx1,idx2,idx3 idx3,idx2,idx1,PRIMARY 67,13,3,4 NULL 9 Using sort_union(idx3,idx2,idx1,PRIMARY); Using where +DROP TABLE t1; +CREATE TABLE t1 ( +f1 int, f2 int, f3 int, f4 int, f5 int, +PRIMARY KEY (f4), KEY (f1), KEY (f2), KEY (f3) +) ; +INSERT INTO t1 VALUES (0,0,NULL,9,5), (0,0,1,9425,NULL); +SELECT f5 FROM t1 +WHERE f2 != 1 OR f1 IS NULL OR f4 = 4 OR +f2 AND (f4 BETWEEN 6 AND 255 OR f3 IS NULL); +f5 +5 +NULL +DROP TABLE t1; +CREATE TABLE t1 ( +f1 int, f2 int, f3 int, f4 int, +PRIMARY KEY (f1), KEY (f3), KEY (f4) +); +INSERT INTO t1 VALUES (9,0,2,6), (9930,0,0,NULL); +SET SESSION optimizer_switch='index_merge_intersection=off'; +SET SESSION optimizer_switch='index_merge_sort_union=off'; +SET SESSION optimizer_switch='index_merge_union=off'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY,f3,f4 NULL NULL NULL 2 Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch='index_merge_union=on'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,f3,f4 PRIMARY,f3 4,5 NULL 2 Using union(PRIMARY,f3); Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +INSERT INTO t1 VALUES +(93,0,3,6), (9933,0,3,3), (94,0,4,6), (9934,0,4,4), +(95,0,5,6), (9935,0,5,5), (96,0,6,6), (9936,0,6,6), +(97,0,7,6), (9937,0,7,7), (98,0,8,6), (9938,0,8,8), +(99,0,9,6), (9939,0,9,9); +SET SESSION optimizer_switch='index_merge_union=off'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL PRIMARY,f3,f4 NULL NULL NULL 16 Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch='index_merge_union=on'; +EXPLAIN +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index_merge PRIMARY,f3,f4 PRIMARY,f3 4,5 NULL 2 Using union(PRIMARY,f3); Using where +SELECT * FROM t1 FORCE KEY (PRIMARY,f3,f4) +WHERE ( f3 = 1 OR f1 = 7 ) AND f1 < 10 +OR f3 BETWEEN 2 AND 2 AND ( f3 = 1 OR f4 != 1 ); +f1 f2 f3 f4 +9 0 2 6 +SET SESSION optimizer_switch=DEFAULT; +DROP TABLE t1; +CREATE TABLE t1 (f1 int) ; +INSERT INTO t1 VALUES (0), (0); +CREATE TABLE t2 (f1 int, f2 int, f3 int, f4 int, INDEX idx (f3,f2)) ; +INSERT INTO t2 VALUES (5,6,0,0), (0,4,0,0); +CREATE TABLE t3 (f1 int, f2 int, INDEX idx1 (f2,f1) , INDEX idx2 (f1)) ; +INSERT INTO t3 VALUES (6,0),( 4,0); +SELECT * FROM t1,t2,t3 +WHERE (t2.f3 = 1 OR t3.f1=t2.f1) AND t3.f1 <> t2.f2 AND t3.f2 = t2.f4; +f1 f1 f2 f3 f4 f1 f2 +DROP TABLE t1,t2,t3; +set session optimizer_switch='index_merge_sort_intersection=default'; +SET SESSION STORAGE_ENGINE=DEFAULT; diff --git a/mysql-test/r/row.result b/mysql-test/r/row.result index 789b9c4f383..80934a4e01f 100644 --- a/mysql-test/r/row.result +++ b/mysql-test/r/row.result @@ -377,7 +377,7 @@ a b a b c EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 index NULL PRIMARY 8 NULL 6 100.00 Using index -1 SIMPLE t2 index NULL PRIMARY 12 NULL 7 100.00 Using where; Using index; Using join buffer +1 SIMPLE t2 index NULL PRIMARY 12 NULL 7 100.00 Using where; Using index; Using join buffer (flat, BNL join) Warnings: Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t1`.`a` - 1) = (`test`.`t2`.`a` - 1)) and (`test`.`t1`.`b` = (`test`.`t2`.`b` + 1))) SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1); diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result index f8df72c6709..f9d6c80018b 100644 --- a/mysql-test/r/select.result +++ b/mysql-test/r/select.result @@ -185,37 +185,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1391,15 +1391,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1415,15 +1415,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1431,7 +1431,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 @@ -2362,16 +2362,16 @@ insert into t1 values (1,2), (2,2), (3,2), (4,2); insert into t2 values (1,3), (2,3), (3,4), (4,4); explain select * from t1 left join t2 on a=c where d in (4); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 Using where -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) select * from t1 left join t2 on a=c where d in (4); a b c d 3 2 3 4 4 2 4 4 explain select * from t1 left join t2 on a=c where d = 4; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 Using where -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) select * from t1 left join t2 on a=c where d = 4; a b c d 3 2 3 4 @@ -2397,11 +2397,11 @@ INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five'); EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref a a 23 test.t1.a 2 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref a a 23 test.t1.a 2 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where DROP TABLE t1, t2; CREATE TABLE t1 ( city char(30) ); INSERT INTO t1 VALUES ('London'); @@ -2716,8 +2716,8 @@ explain select straight_join DISTINCT t2.a,t2.b, t1.c from t1, t3, t2 where (t1.c=t2.a or (t1.c=t3.a and t2.a=t3.b)) and t1.b=556476786 and t2.b like '%%' order by t2.b limit 0,1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref b,c b 5 const 1 Using where; Using temporary; Using filesort -1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index; Using join buffer +1 SIMPLE t1 ref b,c b 5 const 1 Using temporary; Using filesort +1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1) DROP TABLE t1,t2,t3; CREATE TABLE t1 (a int, INDEX idx(a)); @@ -2738,7 +2738,7 @@ ALTER TABLE t1 ENABLE KEYS; EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index b b 5 NULL 2 Using index -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; a b a b 1 NULL 1 1 @@ -2748,7 +2748,7 @@ a b a b EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index b b 5 NULL 2 Using index -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; a b a b 1 NULL 1 1 @@ -2910,11 +2910,11 @@ a EXPLAIN SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 -1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) DROP TABLE t1,t2; select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0; x'10' + 0 X'10' + 0 b'10' + 0 B'10' + 0 @@ -3417,7 +3417,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan DROP TABLE t1,t2; CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL); INSERT t1 SET i = 0; @@ -3453,7 +3453,7 @@ In next EXPLAIN, B.rows must be exactly 10: explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5 and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using where +1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10 drop table t1, t2; CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b)); @@ -3467,13 +3467,13 @@ INSERT INTO t2 VALUES EXPLAIN SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using where -1 SIMPLE t2 ref c c 5 test.t1.a 2 Using where +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 EXPLAIN SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using where -1 SIMPLE t2 ref c c 5 test.t1.a 2 Using where +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 DROP TABLE t1, t2; create table t1 ( a int unsigned not null auto_increment primary key, @@ -3533,7 +3533,7 @@ WHERE t1.id=2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 const idx1 NULL NULL NULL 1 -1 SIMPLE t3 ref idx1 idx1 5 const 3 Using where +1 SIMPLE t3 ref idx1 idx1 5 const 3 SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id WHERE t1.id=2; id a b c d e @@ -3562,19 +3562,19 @@ EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk < 'c' AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where DROP TABLE t1,t2; CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a)); @@ -3608,7 +3608,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si si 5 NULL 4 Using where +1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2,t3 @@ -3616,7 +3616,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND t3.a=t2.a AND t3.c IN ('bb','ee') ; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si,ai si 5 NULL 4 Using where +1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3 @@ -3624,7 +3624,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si si 5 NULL 2 Using where +1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2,t3 @@ -3632,7 +3632,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si,ai si 5 NULL 2 Using where +1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where DROP TABLE t1,t2,t3; CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int); @@ -3752,7 +3752,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2 AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t1 range ts ts 4 NULL 1 Using where +1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan Warnings: Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1 SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30 @@ -3854,7 +3854,7 @@ cc 3 7 EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref name name 6 test.t1.name 2 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; name name n ccc NULL NULL @@ -3928,7 +3928,7 @@ cc 3 7 EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref name name 6 test.t1.name 2 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; name name n ccc NULL NULL @@ -4376,14 +4376,14 @@ CREATE TABLE t1 (a INT KEY, b INT); INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4); EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan Warnings: Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t1`.`b`) and (`test`.`t1`.`a` > 1)) limit 2 +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 DROP TABLE t1; # # Bug#47019: Assertion failed: 0, file .\rt_mbr.c, line 138 when @@ -4396,7 +4396,7 @@ INSERT INTO t1 VALUES EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL a NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; 1 1 @@ -4406,7 +4406,7 @@ SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL a NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); 1 1 @@ -4813,66 +4813,221 @@ CREATE TABLE t5 (f1 int) ; INSERT INTO t5 VALUES (20),(5); CREATE TABLE t6(f1 int); INSERT INTO t6 VALUES (9),(7); -SET SESSION join_buffer_size = 9000; +SET SESSION join_buffer_size = 2048; EXPLAIN SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 1 SIMPLE t2 ALL NULL NULL NULL NULL 12 -1 SIMPLE t3 ALL NULL NULL NULL NULL 1 +1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where 1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 -1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; f1 f1 f1 f1 f2 f1 f1 3 9 NULL NULL NULL 20 9 7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -3 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -3 9 NULL NULL NULL 20 9 3 9 NULL NULL NULL 20 7 7 9 NULL NULL NULL 20 7 -18 9 NULL NULL NULL 20 7 -3 9 NULL NULL NULL 20 7 -7 9 NULL NULL NULL 20 7 -18 9 NULL NULL NULL 20 7 -3 9 NULL NULL NULL 20 7 3 9 NULL NULL NULL 5 9 7 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 5 9 3 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 7 9 NULL NULL NULL 5 9 18 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 -18 9 NULL NULL NULL 5 7 -3 9 NULL NULL NULL 5 7 -7 9 NULL NULL NULL 20 9 18 9 NULL NULL NULL 20 9 3 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 5 9 -18 9 NULL NULL NULL 5 9 -7 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 20 7 3 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 7 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 20 7 -7 9 NULL NULL NULL 5 7 -18 9 NULL NULL NULL 5 7 -3 9 NULL NULL NULL 5 9 7 9 NULL NULL NULL 5 9 18 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 18 9 NULL NULL NULL 5 7 SET SESSION join_buffer_size = DEFAULT; DROP TABLE t1,t2,t3,t4,t5,t6; +# +# Bug #698882: best equality substitution not applied to ref +# +CREATE TABLE t1 (a1 int NOT NULL, b1 char(10), INDEX idx (a1)); +CREATE TABLE t2 (a2 int NOT NULL, b2 char(10), INDEX idx (a2)); +CREATE TABLE t3 (a3 int NOT NULL, b3 char(10), INDEX idx (a3)); +INSERT INTO t1 VALUES (2,'xx'), (1,'xxx'), (11,'xxxxxxx'); +INSERT INTO t2 VALUES +(7,'yyyy'), (2,'y'), (3,'yyy'), (1,'yy'), (1,'yyyyy'), +(3,'yy'), (1,'y'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'), +(7,'yyyy'), (2,'yy'), (3,'yyy'), (1,'yyyyyyyy'), (1,'yyyyy'), +(3,'yy'), (1,'yyy'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'); +INSERT INTO t3 VALUES +(9,'zzzzzzz'), (2,'zzzzz'), (1,'z'), (9,'zz'), (1,'zz'), (5,'zzzzzzz'), +(4,'zz'), (3,'z'), (5,'zzzzzz'), (3,'zz'), (4,'zzzz'), (3,'z'), +(9,'zzzzzzzz'), (2,'zz'), (1,'zz'), (9,'zzz'), (1,'zzz'), (5,'zzzzzzzz'), +(4,'zzz'), (3,'zz'), (5,'zzzzzzz'), (3,'zzz'), (4,'zzzzz'), (3,'zz'), +(9,'zzzzzz'), (2,'zzzz'), (1,'zzz'), (9,'z'), (1,'z'), (5,'zzzzzz'), +(4,'z'), (3,'zzz'), (5,'zzzzz'), (3,'z'), (4,'zzz'), (3,'zzzz'), +(9,'zzzzz'), (2,'zzz'), (1,'zzzz'), (9,'zzz'), (1,'zzzz'), (5,'zzzzz'), +(4,'zzz'), (3,'zzzz'), (5,'zzzz'), (3,'zzz'), (4,'zz'), (3,'zzzzz'); +SET SESSION optimizer_switch='index_condition_pushdown=off'; +EXPLAIN SELECT * from t1,t2,t3 WHERE t3.a3=t1.a1 AND t2.a2=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t2.a2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +SELECT * from t1,t2,t3 +WHERE t3.a3=t1.a1 AND t2.a2=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t2.a2 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SET SESSION optimizer_switch=DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #707555: crash with equality substitution in ref +# +CREATE TABLE t1 (f11 int, f12 int, PRIMARY KEY (f11), KEY (f12)) ; +INSERT INTO t1 VALUES (1,NULL), (8,NULL); +CREATE TABLE t2 (f21 int, f22 int, f23 int, KEY (f22)) ; +INSERT INTO t2 VALUES (1,NULL,3), (2,7,8); +CREATE TABLE t3 (f31 int, f32 int(11), PRIMARY KEY (f31), KEY (f32)) ; +INSERT INTO t3 VALUES (1,494862336); +CREATE TABLE t4 (f41 int, f42 int, PRIMARY KEY (f41), KEY (f42)) ; +INSERT INTO t4 VALUES (1,NULL), (8,NULL); +CREATE TABLE t5 (f51 int, PRIMARY KEY (f51)) ; +INSERT IGNORE INTO t5 VALUES (100); +CREATE TABLE t6 (f61 int, f62 int, KEY (f61)) ; +INSERT INTO t6 VALUES (NULL,1), (3,10); +CREATE TABLE t7 (f71 int, f72 int, KEY (f72)) ; +INSERT INTO t7 VALUES (1,NULL), (2,7); +EXPLAIN +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 system PRIMARY,f32 NULL NULL NULL 1 +1 SIMPLE t5 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ref f22 f22 5 const 1 +1 SIMPLE t6 ref f61 f61 5 const 1 Using where +1 SIMPLE t4 ref f42 f42 5 const 1 Using index +1 SIMPLE t7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +f23 +DROP TABLE t1,t2,t3,t4,t5,t6,t7; End of 5.1 tests +# +# BUG#776274: substitution of a single row table +# +CREATE TABLE t1 (a int NOT NULL , b int); +INSERT INTO t1 VALUES (2,2); +SELECT * FROM t1 WHERE a = b; +a b +2 2 +EXPLAIN +SELECT * FROM t1 WHERE a = b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +DROP TABLE t1; diff --git a/mysql-test/r/select_debug.result b/mysql-test/r/select_debug.result new file mode 100644 index 00000000000..1eb8a0754fa --- /dev/null +++ b/mysql-test/r/select_debug.result @@ -0,0 +1,18 @@ +# +# Bug #725050: print keyuse info when hash join is used +# +create table t1 (a int, b int); +insert into t1 values (2,2), (1,1); +create table t2 (a int); +insert into t2 values (2), (3); +set session join_cache_level=3; +set @@debug = 'd:t:O,/tmp/trace.out'; +explain select t1.b from t1,t2 where t1.b=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.b 2 Using where; Using join buffer (flat, BNLH join) +select t1.b from t1,t2 where t1.b=t2.a; +b +2 +set session join_cache_level=default; +drop table t1,t2; diff --git a/mysql-test/r/select_jcl6.result b/mysql-test/r/select_jcl6.result new file mode 100644 index 00000000000..ca7241d8f87 --- /dev/null +++ b/mysql-test/r/select_jcl6.result @@ -0,0 +1,5045 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +drop table if exists t1,t2,t3,t4,t11; +drop table if exists t1_1,t1_2,t9_1,t9_2,t1aa,t2aa; +drop view if exists v1; +CREATE TABLE t1 ( +Period smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL, +Varor_period smallint(4) unsigned DEFAULT '0' NOT NULL +); +INSERT INTO t1 VALUES (9410,9412); +select period from t1; +period +9410 +select * from t1; +Period Varor_period +9410 9412 +select t1.* from t1; +Period Varor_period +9410 9412 +CREATE TABLE t2 ( +auto int not null auto_increment, +fld1 int(6) unsigned zerofill DEFAULT '000000' NOT NULL, +companynr tinyint(2) unsigned zerofill DEFAULT '00' NOT NULL, +fld3 char(30) DEFAULT '' NOT NULL, +fld4 char(35) DEFAULT '' NOT NULL, +fld5 char(35) DEFAULT '' NOT NULL, +fld6 char(4) DEFAULT '' NOT NULL, +UNIQUE fld1 (fld1), +KEY fld3 (fld3), +PRIMARY KEY (auto) +); +select t2.fld3 from t2 where companynr = 58 and fld3 like "%imaginable%"; +fld3 +imaginable +select fld3 from t2 where fld3 like "%cultivation" ; +fld3 +cultivation +select t2.fld3,companynr from t2 where companynr = 57+1 order by fld3; +fld3 companynr +concoct 58 +druggists 58 +engrossing 58 +Eurydice 58 +exclaimers 58 +ferociousness 58 +hopelessness 58 +Huey 58 +imaginable 58 +judges 58 +merging 58 +ostrich 58 +peering 58 +Phelps 58 +presumes 58 +Ruth 58 +sentences 58 +Shylock 58 +straggled 58 +synergy 58 +thanking 58 +tying 58 +unlocks 58 +select fld3,companynr from t2 where companynr = 58 order by fld3; +fld3 companynr +concoct 58 +druggists 58 +engrossing 58 +Eurydice 58 +exclaimers 58 +ferociousness 58 +hopelessness 58 +Huey 58 +imaginable 58 +judges 58 +merging 58 +ostrich 58 +peering 58 +Phelps 58 +presumes 58 +Ruth 58 +sentences 58 +Shylock 58 +straggled 58 +synergy 58 +thanking 58 +tying 58 +unlocks 58 +select fld3 from t2 order by fld3 desc limit 10; +fld3 +youthfulness +yelped +Wotan +workers +Witt +witchcraft +Winsett +Willy +willed +wildcats +select fld3 from t2 order by fld3 desc limit 5; +fld3 +youthfulness +yelped +Wotan +workers +Witt +select fld3 from t2 order by fld3 desc limit 5,5; +fld3 +witchcraft +Winsett +Willy +willed +wildcats +select t2.fld3 from t2 where fld3 = 'honeysuckle'; +fld3 +honeysuckle +select t2.fld3 from t2 where fld3 LIKE 'honeysuckl_'; +fld3 +honeysuckle +select t2.fld3 from t2 where fld3 LIKE 'hon_ysuckl_'; +fld3 +honeysuckle +select t2.fld3 from t2 where fld3 LIKE 'honeysuckle%'; +fld3 +honeysuckle +select t2.fld3 from t2 where fld3 LIKE 'h%le'; +fld3 +honeysuckle +select t2.fld3 from t2 where fld3 LIKE 'honeysuckle_'; +fld3 +select t2.fld3 from t2 where fld3 LIKE 'don_t_find_me_please%'; +fld3 +explain select t2.fld3 from t2 where fld3 = 'honeysuckle'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref fld3 fld3 30 const 1 Using where; Using index +explain select fld3 from t2 ignore index (fld3) where fld3 = 'honeysuckle'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +explain select fld3 from t2 use index (fld1) where fld3 = 'honeysuckle'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +explain select fld3 from t2 use index (fld3) where fld3 = 'honeysuckle'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref fld3 fld3 30 const 1 Using where; Using index +explain select fld3 from t2 use index (fld1,fld3) where fld3 = 'honeysuckle'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref fld3 fld3 30 const 1 Using where; Using index +explain select fld3 from t2 ignore index (fld3,not_used); +ERROR 42000: Key 'not_used' doesn't exist in table 't2' +explain select fld3 from t2 use index (not_used); +ERROR 42000: Key 'not_used' doesn't exist in table 't2' +select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3; +fld3 +honeysuckle +honoring +explain select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range fld3 fld3 30 NULL 2 Using where; Using index +select fld1,fld3 from t2 where fld3="Colombo" or fld3 = "nondecreasing" order by fld3; +fld1 fld3 +148504 Colombo +068305 Colombo +000000 nondecreasing +select fld1,fld3 from t2 where companynr = 37 and fld3 = 'appendixes'; +fld1 fld3 +232605 appendixes +1232605 appendixes +1232606 appendixes +1232607 appendixes +1232608 appendixes +1232609 appendixes +select fld1 from t2 where fld1=250501 or fld1="250502"; +fld1 +250501 +250502 +explain select fld1 from t2 where fld1=250501 or fld1="250502"; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range fld1 fld1 4 NULL 2 Using where; Using index +select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502; +fld1 +250501 +250502 +250505 +250601 +explain select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index +select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; +fld1 fld3 +012001 flanking +013602 foldout +013606 fingerings +018007 fanatic +018017 featherweight +018054 fetters +018103 flint +018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish +188007 flurried +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful +226205 foothill +226209 furnishings +228306 forthcoming +228311 fated +231315 freezes +232102 forgivably +238007 filial +238008 fixedly +select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; +fld3 +select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); +fld3 +Chantilly +select fld1,fld3 from t2 where fld1 like "25050%"; +fld1 fld3 +250501 poisoning +250502 Iraqis +250503 heaving +250504 population +250505 bomb +select fld1,fld3 from t2 where fld1 like "25050_"; +fld1 fld3 +250501 poisoning +250502 Iraqis +250503 heaving +250504 population +250505 bomb +select distinct companynr from t2; +companynr +00 +37 +36 +50 +58 +29 +40 +53 +65 +41 +34 +68 +select distinct companynr from t2 order by companynr; +companynr +00 +29 +34 +36 +37 +40 +41 +50 +53 +58 +65 +68 +select distinct companynr from t2 order by companynr desc; +companynr +68 +65 +58 +53 +50 +41 +40 +37 +36 +34 +29 +00 +select distinct t2.fld3,period from t2,t1 where companynr=37 and fld3 like "O%"; +fld3 period +obliterates 9410 +offload 9410 +opaquely 9410 +organizer 9410 +overestimating 9410 +overlay 9410 +select distinct fld3 from t2 where companynr = 34 order by fld3; +fld3 +absentee +accessed +ahead +alphabetic +Asiaticizations +attitude +aye +bankruptcies +belays +Blythe +bomb +boulevard +bulldozes +cannot +caressing +charcoal +checksumming +chess +clubroom +colorful +cosy +creator +crying +Darius +diffusing +duality +Eiffel +Epiphany +Ernestine +explorers +exterminated +famine +forked +Gershwins +heaving +Hodges +Iraqis +Italianization +Lagos +landslide +libretto +Majorca +mastering +narrowed +occurred +offerers +Palestine +Peruvianizes +pharmaceutic +poisoning +population +Pygmalion +rats +realest +recording +regimented +retransmitting +reviver +rouses +scars +sicker +sleepwalk +stopped +sugars +translatable +uncles +unexpected +uprisings +versatility +vest +select distinct fld3 from t2 limit 10; +fld3 +abates +abiding +Abraham +abrogating +absentee +abut +accessed +accruing +accumulating +accuracies +select distinct fld3 from t2 having fld3 like "A%" limit 10; +fld3 +abates +abiding +Abraham +abrogating +absentee +abut +accessed +accruing +accumulating +accuracies +select distinct substring(fld3,1,3) from t2 where fld3 like "A%"; +substring(fld3,1,3) +aba +abi +Abr +abs +abu +acc +acq +acu +Ade +adj +Adl +adm +Ado +ads +adv +aer +aff +afi +afl +afo +agi +ahe +aim +air +Ald +alg +ali +all +alp +alr +ama +ame +amm +ana +and +ane +Ang +ani +Ann +Ant +api +app +aqu +Ara +arc +Arm +arr +Art +Asi +ask +asp +ass +ast +att +aud +Aug +aut +ave +avo +awe +aye +Azt +select distinct substring(fld3,1,3) as a from t2 having a like "A%" order by a limit 10; +a +aba +abi +Abr +abs +abu +acc +acq +acu +Ade +adj +select distinct substring(fld3,1,3) from t2 where fld3 like "A%" limit 10; +substring(fld3,1,3) +aba +abi +Abr +abs +abu +acc +acq +acu +Ade +adj +select distinct substring(fld3,1,3) as a from t2 having a like "A%" limit 10; +a +aba +abi +Abr +abs +abu +acc +acq +acu +Ade +adj +create table t3 ( +period int not null, +name char(32) not null, +companynr int not null, +price double(11,0), +price2 double(11,0), +key (period), +key (name) +); +create temporary table tmp engine = myisam select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +insert into tmp select * from t3; +insert into t3 select * from tmp; +alter table t3 add t2nr int not null auto_increment primary key first; +drop table tmp; +SET SQL_BIG_TABLES=1; +select distinct concat(fld3," ",fld3) as namn from t2,t3 where t2.fld1=t3.t2nr order by namn limit 10; +namn +Abraham Abraham +abrogating abrogating +admonishing admonishing +Adolph Adolph +afield afield +aging aging +ammonium ammonium +analyzable analyzable +animals animals +animized animized +SET SQL_BIG_TABLES=0; +select distinct concat(fld3," ",fld3) from t2,t3 where t2.fld1=t3.t2nr order by fld3 limit 10; +concat(fld3," ",fld3) +Abraham Abraham +abrogating abrogating +admonishing admonishing +Adolph Adolph +afield afield +aging aging +ammonium ammonium +analyzable analyzable +animals animals +animized animized +select distinct fld5 from t2 limit 10; +fld5 +neat +Steinberg +jarring +tinily +balled +persist +attainments +fanatic +measures +rightfulness +select distinct fld3,count(*) from t2 group by companynr,fld3 limit 10; +fld3 count(*) +affixed 1 +and 1 +annoyers 1 +Anthony 1 +assayed 1 +assurers 1 +attendants 1 +bedlam 1 +bedpost 1 +boasted 1 +SET SQL_BIG_TABLES=1; +select distinct fld3,count(*) from t2 group by companynr,fld3 limit 10; +fld3 count(*) +affixed 1 +and 1 +annoyers 1 +Anthony 1 +assayed 1 +assurers 1 +attendants 1 +bedlam 1 +bedpost 1 +boasted 1 +SET SQL_BIG_TABLES=0; +select distinct fld3,repeat("a",length(fld3)),count(*) from t2 group by companynr,fld3 limit 100,10; +fld3 repeat("a",length(fld3)) count(*) +circus aaaaaa 1 +cited aaaaa 1 +Colombo aaaaaaa 1 +congresswoman aaaaaaaaaaaaa 1 +contrition aaaaaaaaaa 1 +corny aaaaa 1 +cultivation aaaaaaaaaaa 1 +definiteness aaaaaaaaaaaa 1 +demultiplex aaaaaaaaaaa 1 +disappointing aaaaaaaaaaaaa 1 +select distinct companynr,rtrim(space(512+companynr)) from t3 order by 1,2; +companynr rtrim(space(512+companynr)) +37 +78 +101 +154 +311 +447 +512 +select distinct fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr order by fld3; +fld3 +explain select t3.t2nr,fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr order by t3.t2nr,fld3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL fld1 NULL NULL NULL 1199 Using where; Using temporary; Using filesort +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.fld1 1 Using where; Using index +explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period limit 10; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t1 ref period period 4 test.t3.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select * from t3 as t1,t3 where t1.period=t3.period order by t1.period limit 10; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +select period from t1; +period +9410 +select period from t1 where period=1900; +period +select fld3,period from t1,t2 where fld1 = 011401 order by period; +fld3 period +breaking 9410 +select fld3,period from t2,t3 where t2.fld1 = 011401 and t2.fld1=t3.t2nr and t3.period=1001; +fld3 period +breaking 1001 +explain select fld3,period from t2,t3 where t2.fld1 = 011401 and t3.t2nr=t2.fld1 and 1001 = t3.period; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 const fld1 fld1 4 const 1 +1 SIMPLE t3 const PRIMARY,period PRIMARY 4 const 1 +select fld3,period from t2,t1 where companynr*10 = 37*10; +fld3 period +breaking 9410 +Romans 9410 +intercepted 9410 +bewilderingly 9410 +astound 9410 +admonishing 9410 +sumac 9410 +flanking 9410 +combed 9410 +subjective 9410 +scatterbrain 9410 +Eulerian 9410 +Kane 9410 +overlay 9410 +perturb 9410 +goblins 9410 +annihilates 9410 +Wotan 9410 +snatching 9410 +concludes 9410 +laterally 9410 +yelped 9410 +grazing 9410 +Baird 9410 +celery 9410 +misunderstander 9410 +handgun 9410 +foldout 9410 +mystic 9410 +succumbed 9410 +Nabisco 9410 +fingerings 9410 +aging 9410 +afield 9410 +ammonium 9410 +boat 9410 +intelligibility 9410 +Augustine 9410 +teethe 9410 +dreaded 9410 +scholastics 9410 +audiology 9410 +wallet 9410 +parters 9410 +eschew 9410 +quitter 9410 +neat 9410 +Steinberg 9410 +jarring 9410 +tinily 9410 +balled 9410 +persist 9410 +attainments 9410 +fanatic 9410 +measures 9410 +rightfulness 9410 +capably 9410 +impulsive 9410 +starlet 9410 +terminators 9410 +untying 9410 +announces 9410 +featherweight 9410 +pessimist 9410 +daughter 9410 +decliner 9410 +lawgiver 9410 +stated 9410 +readable 9410 +attrition 9410 +cascade 9410 +motors 9410 +interrogate 9410 +pests 9410 +stairway 9410 +dopers 9410 +testicle 9410 +Parsifal 9410 +leavings 9410 +postulation 9410 +squeaking 9410 +contrasted 9410 +leftover 9410 +whiteners 9410 +erases 9410 +Punjab 9410 +Merritt 9410 +Quixotism 9410 +sweetish 9410 +dogging 9410 +scornfully 9410 +bellow 9410 +bills 9410 +cupboard 9410 +sureties 9410 +puddings 9410 +fetters 9410 +bivalves 9410 +incurring 9410 +Adolph 9410 +pithed 9410 +Miles 9410 +trimmings 9410 +tragedies 9410 +skulking 9410 +flint 9410 +flopping 9410 +relaxing 9410 +offload 9410 +suites 9410 +lists 9410 +animized 9410 +multilayer 9410 +standardizes 9410 +Judas 9410 +vacuuming 9410 +dentally 9410 +humanness 9410 +inch 9410 +Weissmuller 9410 +irresponsibly 9410 +luckily 9410 +culled 9410 +medical 9410 +bloodbath 9410 +subschema 9410 +animals 9410 +Micronesia 9410 +repetitions 9410 +Antares 9410 +ventilate 9410 +pityingly 9410 +interdependent 9410 +Graves 9410 +neonatal 9410 +chafe 9410 +honoring 9410 +realtor 9410 +elite 9410 +funereal 9410 +abrogating 9410 +sorters 9410 +Conley 9410 +lectured 9410 +Abraham 9410 +Hawaii 9410 +cage 9410 +hushes 9410 +Simla 9410 +reporters 9410 +Dutchman 9410 +descendants 9410 +groupings 9410 +dissociate 9410 +coexist 9410 +Beebe 9410 +Taoism 9410 +Connally 9410 +fetched 9410 +checkpoints 9410 +rusting 9410 +galling 9410 +obliterates 9410 +traitor 9410 +resumes 9410 +analyzable 9410 +terminator 9410 +gritty 9410 +firearm 9410 +minima 9410 +Selfridge 9410 +disable 9410 +witchcraft 9410 +betroth 9410 +Manhattanize 9410 +imprint 9410 +peeked 9410 +swelling 9410 +interrelationships 9410 +riser 9410 +Gandhian 9410 +peacock 9410 +bee 9410 +kanji 9410 +dental 9410 +scarf 9410 +chasm 9410 +insolence 9410 +syndicate 9410 +alike 9410 +imperial 9410 +convulsion 9410 +railway 9410 +validate 9410 +normalizes 9410 +comprehensive 9410 +chewing 9410 +denizen 9410 +schemer 9410 +chronicle 9410 +Kline 9410 +Anatole 9410 +partridges 9410 +brunch 9410 +recruited 9410 +dimensions 9410 +Chicana 9410 +announced 9410 +praised 9410 +employing 9410 +linear 9410 +quagmire 9410 +western 9410 +relishing 9410 +serving 9410 +scheduling 9410 +lore 9410 +eventful 9410 +arteriole 9410 +disentangle 9410 +cured 9410 +Fenton 9410 +avoidable 9410 +drains 9410 +detectably 9410 +husky 9410 +impelling 9410 +undoes 9410 +evened 9410 +squeezes 9410 +destroyer 9410 +rudeness 9410 +beaner 9410 +boorish 9410 +Everhart 9410 +encompass 9410 +mushrooms 9410 +Alison 9410 +externally 9410 +pellagra 9410 +cult 9410 +creek 9410 +Huffman 9410 +Majorca 9410 +governing 9410 +gadfly 9410 +reassigned 9410 +intentness 9410 +craziness 9410 +psychic 9410 +squabbled 9410 +burlesque 9410 +capped 9410 +extracted 9410 +DiMaggio 9410 +exclamation 9410 +subdirectory 9410 +Gothicism 9410 +feminine 9410 +metaphysically 9410 +sanding 9410 +Miltonism 9410 +freakish 9410 +index 9410 +straight 9410 +flurried 9410 +denotative 9410 +coming 9410 +commencements 9410 +gentleman 9410 +gifted 9410 +Shanghais 9410 +sportswriting 9410 +sloping 9410 +navies 9410 +leaflet 9410 +shooter 9410 +Joplin 9410 +babies 9410 +assails 9410 +admiring 9410 +swaying 9410 +Goldstine 9410 +fitting 9410 +Norwalk 9410 +analogy 9410 +deludes 9410 +cokes 9410 +Clayton 9410 +exhausts 9410 +causality 9410 +sating 9410 +icon 9410 +throttles 9410 +communicants 9410 +dehydrate 9410 +priceless 9410 +publicly 9410 +incidentals 9410 +commonplace 9410 +mumbles 9410 +furthermore 9410 +cautioned 9410 +parametrized 9410 +registration 9410 +sadly 9410 +positioning 9410 +babysitting 9410 +eternal 9410 +hoarder 9410 +congregates 9410 +rains 9410 +workers 9410 +sags 9410 +unplug 9410 +garage 9410 +boulder 9410 +specifics 9410 +Teresa 9410 +Winsett 9410 +convenient 9410 +buckboards 9410 +amenities 9410 +resplendent 9410 +sews 9410 +participated 9410 +Simon 9410 +certificates 9410 +Fitzpatrick 9410 +Evanston 9410 +misted 9410 +textures 9410 +save 9410 +count 9410 +rightful 9410 +chaperone 9410 +Lizzy 9410 +clenched 9410 +effortlessly 9410 +accessed 9410 +beaters 9410 +Hornblower 9410 +vests 9410 +indulgences 9410 +infallibly 9410 +unwilling 9410 +excrete 9410 +spools 9410 +crunches 9410 +overestimating 9410 +ineffective 9410 +humiliation 9410 +sophomore 9410 +star 9410 +rifles 9410 +dialysis 9410 +arriving 9410 +indulge 9410 +clockers 9410 +languages 9410 +Antarctica 9410 +percentage 9410 +ceiling 9410 +specification 9410 +regimented 9410 +ciphers 9410 +pictures 9410 +serpents 9410 +allot 9410 +realized 9410 +mayoral 9410 +opaquely 9410 +hostess 9410 +fiftieth 9410 +incorrectly 9410 +decomposition 9410 +stranglings 9410 +mixture 9410 +electroencephalography 9410 +similarities 9410 +charges 9410 +freest 9410 +Greenberg 9410 +tinting 9410 +expelled 9410 +warm 9410 +smoothed 9410 +deductions 9410 +Romano 9410 +bitterroot 9410 +corset 9410 +securing 9410 +environing 9410 +cute 9410 +Crays 9410 +heiress 9410 +inform 9410 +avenge 9410 +universals 9410 +Kinsey 9410 +ravines 9410 +bestseller 9410 +equilibrium 9410 +extents 9410 +relatively 9410 +pressure 9410 +critiques 9410 +befouled 9410 +rightfully 9410 +mechanizing 9410 +Latinizes 9410 +timesharing 9410 +Aden 9410 +embassies 9410 +males 9410 +shapelessly 9410 +mastering 9410 +Newtonian 9410 +finishers 9410 +abates 9410 +teem 9410 +kiting 9410 +stodgy 9410 +feed 9410 +guitars 9410 +airships 9410 +store 9410 +denounces 9410 +Pyle 9410 +Saxony 9410 +serializations 9410 +Peruvian 9410 +taxonomically 9410 +kingdom 9410 +stint 9410 +Sault 9410 +faithful 9410 +Ganymede 9410 +tidiness 9410 +gainful 9410 +contrary 9410 +Tipperary 9410 +tropics 9410 +theorizers 9410 +renew 9410 +already 9410 +terminal 9410 +Hegelian 9410 +hypothesizer 9410 +warningly 9410 +journalizing 9410 +nested 9410 +Lars 9410 +saplings 9410 +foothill 9410 +labeled 9410 +imperiously 9410 +reporters 9410 +furnishings 9410 +precipitable 9410 +discounts 9410 +excises 9410 +Stalin 9410 +despot 9410 +ripeness 9410 +Arabia 9410 +unruly 9410 +mournfulness 9410 +boom 9410 +slaughter 9410 +Sabine 9410 +handy 9410 +rural 9410 +organizer 9410 +shipyard 9410 +civics 9410 +inaccuracy 9410 +rules 9410 +juveniles 9410 +comprised 9410 +investigations 9410 +stabilizes 9410 +seminaries 9410 +Hunter 9410 +sporty 9410 +test 9410 +weasels 9410 +CERN 9410 +tempering 9410 +afore 9410 +Galatean 9410 +techniques 9410 +error 9410 +veranda 9410 +severely 9410 +Cassites 9410 +forthcoming 9410 +guides 9410 +vanish 9410 +lied 9410 +sawtooth 9410 +fated 9410 +gradually 9410 +widens 9410 +preclude 9410 +evenhandedly 9410 +percentage 9410 +disobedience 9410 +humility 9410 +gleaning 9410 +petted 9410 +bloater 9410 +minion 9410 +marginal 9410 +apiary 9410 +measures 9410 +precaution 9410 +repelled 9410 +primary 9410 +coverings 9410 +Artemia 9410 +navigate 9410 +spatial 9410 +Gurkha 9410 +meanwhile 9410 +Melinda 9410 +Butterfield 9410 +Aldrich 9410 +previewing 9410 +glut 9410 +unaffected 9410 +inmate 9410 +mineral 9410 +impending 9410 +meditation 9410 +ideas 9410 +miniaturizes 9410 +lewdly 9410 +title 9410 +youthfulness 9410 +creak 9410 +Chippewa 9410 +clamored 9410 +freezes 9410 +forgivably 9410 +reduce 9410 +McGovern 9410 +Nazis 9410 +epistle 9410 +socializes 9410 +conceptions 9410 +Kevin 9410 +uncovering 9410 +chews 9410 +appendixes 9410 +appendixes 9410 +appendixes 9410 +appendixes 9410 +appendixes 9410 +appendixes 9410 +raining 9410 +infest 9410 +compartment 9410 +minting 9410 +ducks 9410 +roped 9410 +waltz 9410 +Lillian 9410 +repressions 9410 +chillingly 9410 +noncritical 9410 +lithograph 9410 +spongers 9410 +parenthood 9410 +posed 9410 +instruments 9410 +filial 9410 +fixedly 9410 +relives 9410 +Pandora 9410 +watering 9410 +ungrateful 9410 +secures 9410 +poison 9410 +dusted 9410 +encompasses 9410 +presentation 9410 +Kantian 9410 +select fld3,period,price,price2 from t2,t3 where t2.fld1=t3.t2nr and period >= 1001 and period <= 1002 and t2.companynr = 37 order by fld3,period, price; +fld3 period price price2 +admonishing 1002 28357832 8723648 +analyzable 1002 28357832 8723648 +annihilates 1001 5987435 234724 +Antares 1002 28357832 8723648 +astound 1001 5987435 234724 +audiology 1001 5987435 234724 +Augustine 1002 28357832 8723648 +Baird 1002 28357832 8723648 +bewilderingly 1001 5987435 234724 +breaking 1001 5987435 234724 +Conley 1001 5987435 234724 +dentally 1002 28357832 8723648 +dissociate 1002 28357832 8723648 +elite 1001 5987435 234724 +eschew 1001 5987435 234724 +Eulerian 1001 5987435 234724 +flanking 1001 5987435 234724 +foldout 1002 28357832 8723648 +funereal 1002 28357832 8723648 +galling 1002 28357832 8723648 +Graves 1001 5987435 234724 +grazing 1001 5987435 234724 +groupings 1001 5987435 234724 +handgun 1001 5987435 234724 +humility 1002 28357832 8723648 +impulsive 1002 28357832 8723648 +inch 1001 5987435 234724 +intelligibility 1001 5987435 234724 +jarring 1001 5987435 234724 +lawgiver 1001 5987435 234724 +lectured 1002 28357832 8723648 +Merritt 1002 28357832 8723648 +neonatal 1001 5987435 234724 +offload 1002 28357832 8723648 +parters 1002 28357832 8723648 +pityingly 1002 28357832 8723648 +puddings 1002 28357832 8723648 +Punjab 1001 5987435 234724 +quitter 1002 28357832 8723648 +realtor 1001 5987435 234724 +relaxing 1001 5987435 234724 +repetitions 1001 5987435 234724 +resumes 1001 5987435 234724 +Romans 1002 28357832 8723648 +rusting 1001 5987435 234724 +scholastics 1001 5987435 234724 +skulking 1002 28357832 8723648 +stated 1002 28357832 8723648 +suites 1002 28357832 8723648 +sureties 1001 5987435 234724 +testicle 1002 28357832 8723648 +tinily 1002 28357832 8723648 +tragedies 1001 5987435 234724 +trimmings 1001 5987435 234724 +vacuuming 1001 5987435 234724 +ventilate 1001 5987435 234724 +wallet 1001 5987435 234724 +Weissmuller 1002 28357832 8723648 +Wotan 1002 28357832 8723648 +select t2.fld1,fld3,period,price,price2 from t2,t3 where t2.fld1>= 18201 and t2.fld1 <= 18811 and t2.fld1=t3.t2nr and period = 1001 and t2.companynr = 37; +fld1 fld3 period price price2 +018201 relaxing 1001 5987435 234724 +018601 vacuuming 1001 5987435 234724 +018801 inch 1001 5987435 234724 +018811 repetitions 1001 5987435 234724 +create table t4 ( +companynr tinyint(2) unsigned zerofill NOT NULL default '00', +companyname char(30) NOT NULL default '', +PRIMARY KEY (companynr), +UNIQUE KEY companyname(companyname) +) ENGINE=MyISAM MAX_ROWS=50 PACK_KEYS=1 COMMENT='companynames'; +select STRAIGHT_JOIN t2.companynr,companyname from t4,t2 where t2.companynr=t4.companynr group by t2.companynr; +companynr companyname +00 Unknown +29 company 1 +34 company 2 +36 company 3 +37 company 4 +40 company 5 +41 company 6 +50 company 11 +53 company 7 +58 company 8 +65 company 9 +68 company 10 +select SQL_SMALL_RESULT t2.companynr,companyname from t4,t2 where t2.companynr=t4.companynr group by t2.companynr; +companynr companyname +00 Unknown +29 company 1 +34 company 2 +36 company 3 +37 company 4 +40 company 5 +41 company 6 +50 company 11 +53 company 7 +58 company 8 +65 company 9 +68 company 10 +select * from t1,t1 t12; +Period Varor_period Period Varor_period +9410 9412 9410 9412 +select t2.fld1,t22.fld1 from t2,t2 t22 where t2.fld1 >= 250501 and t2.fld1 <= 250505 and t22.fld1 >= 250501 and t22.fld1 <= 250505; +fld1 fld1 +250501 250501 +250502 250501 +250503 250501 +250504 250501 +250505 250501 +250501 250502 +250502 250502 +250503 250502 +250504 250502 +250505 250502 +250501 250503 +250502 250503 +250503 250503 +250504 250503 +250505 250503 +250501 250504 +250502 250504 +250503 250504 +250504 250504 +250505 250504 +250501 250505 +250502 250505 +250503 250505 +250504 250505 +250505 250505 +insert into t2 (fld1, companynr) values (999999,99); +select t2.companynr,companyname from t2 left join t4 using (companynr) where t4.companynr is null; +companynr companyname +99 NULL +select count(*) from t2 left join t4 using (companynr) where t4.companynr is not null; +count(*) +1199 +explain select t2.companynr,companyname from t2 left join t4 using (companynr) where t4.companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1200 +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1200 Using where; Not exists; Using join buffer (flat, BNLH join) +select companynr,companyname from t2 left join t4 using (companynr) where companynr is null; +companynr companyname +select count(*) from t2 left join t4 using (companynr) where companynr is not null; +count(*) +1200 +explain select companynr,companyname from t2 left join t4 using (companynr) where companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +delete from t2 where fld1=999999; +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr < 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 and t4.companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr < 0 or t4.companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where ifnull(t2.companynr,1)>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 test.t4.companynr 1199 Using where; Using join buffer (flat, BNLH join) +select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; +companynr companynr +37 36 +41 40 +explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary +1 SIMPLE t2 hash_ALL NULL #hash#$hj 1 func 1199 Using where; Using join buffer (flat, BNLH join) +select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; +fld1 companynr fld3 period +038008 37 reporters 1008 +038208 37 Selfridge 1008 +select t2.fld1,t2.companynr,fld3,period from t3,t2 where (t2.fld1 = 38208 or t2.fld1 = 38008) and t2.fld1=t3.t2nr and period>=1008 and period<=1009; +fld1 companynr fld3 period +038008 37 reporters 1008 +038208 37 Selfridge 1008 +select t2.fld1,t2.companynr,fld3,period from t3,t2 where (t3.t2nr = 38208 or t3.t2nr = 38008) and t2.fld1=t3.t2nr and period>=1008 and period<=1009; +fld1 companynr fld3 period +038008 37 reporters 1008 +038208 37 Selfridge 1008 +select period from t1 where (((period > 0) or period < 10000 or (period = 1900)) and (period=1900 and period <= 1901) or (period=1903 and (period=1903)) and period>=1902) or ((period=1904 or period=1905) or (period=1906 or period>1907)) or (period=1908 and period = 1909); +period +9410 +select period from t1 where ((period > 0 and period < 1) or (((period > 0 and period < 100) and (period > 10)) or (period > 10)) or (period > 0 and (period > 5 or period > 6))); +period +9410 +select a.fld1 from t2 as a,t2 b where ((a.fld1 = 250501 and a.fld1=b.fld1) or a.fld1=250502 or a.fld1=250503 or (a.fld1=250505 and a.fld1<=b.fld1 and b.fld1>=a.fld1)) and a.fld1=b.fld1; +fld1 +250501 +250502 +250503 +250505 +select fld1 from t2 where fld1 in (250502,98005,98006,250503,250605,250606) and fld1 >=250502 and fld1 not in (250605,250606); +fld1 +250502 +250503 +select fld1 from t2 where fld1 between 250502 and 250504; +fld1 +250502 +250503 +250504 +select fld3 from t2 where (((fld3 like "_%L%" ) or (fld3 like "%ok%")) and ( fld3 like "L%" or fld3 like "G%")) and fld3 like "L%" ; +fld3 +label +labeled +labeled +landslide +laterally +leaflet +lewdly +Lillian +luckily +select count(*) from t1; +count(*) +1 +select companynr,count(*),sum(fld1) from t2 group by companynr; +companynr count(*) sum(fld1) +00 82 10355753 +29 95 14473298 +34 70 17788966 +36 215 22786296 +37 588 83602098 +40 37 6618386 +41 52 12816335 +50 11 1595438 +53 4 793210 +58 23 2254293 +65 10 2284055 +68 12 3097288 +select companynr,count(*) from t2 group by companynr order by companynr desc limit 5; +companynr count(*) +68 12 +65 10 +58 23 +53 4 +50 11 +select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>""; +count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) variance(fld1) +70 absentee vest 17788966 254128.0857 3272.5940 10709871.3069 +explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>""; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 100.00 Using where +Warnings: +Note 1003 select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> '')) +select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3; +companynr count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) variance(fld1) +00 82 Anthony windmills 10355753 126289.6707 115550.9757 13352027981.7087 +29 95 abut wetness 14473298 152350.5053 8368.5480 70032594.9026 +34 70 absentee vest 17788966 254128.0857 3272.5940 10709871.3069 +select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10; +companynr t2nr count(price) sum(price) min(price) max(price) avg(price) +37 1 1 5987435 5987435 5987435 5987435.0000 +37 2 1 28357832 28357832 28357832 28357832.0000 +37 3 1 39654943 39654943 39654943 39654943.0000 +37 11 1 5987435 5987435 5987435 5987435.0000 +37 12 1 28357832 28357832 28357832 28357832.0000 +37 13 1 39654943 39654943 39654943 39654943.0000 +37 21 1 5987435 5987435 5987435 5987435.0000 +37 22 1 28357832 28357832 28357832 28357832.0000 +37 23 1 39654943 39654943 39654943 39654943.0000 +37 31 1 5987435 5987435 5987435 5987435.0000 +select /*! SQL_SMALL_RESULT */ companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10; +companynr t2nr count(price) sum(price) min(price) max(price) avg(price) +37 1 1 5987435 5987435 5987435 5987435.0000 +37 2 1 28357832 28357832 28357832 28357832.0000 +37 3 1 39654943 39654943 39654943 39654943.0000 +37 11 1 5987435 5987435 5987435 5987435.0000 +37 12 1 28357832 28357832 28357832 28357832.0000 +37 13 1 39654943 39654943 39654943 39654943.0000 +37 21 1 5987435 5987435 5987435 5987435.0000 +37 22 1 28357832 28357832 28357832 28357832.0000 +37 23 1 39654943 39654943 39654943 39654943.0000 +37 31 1 5987435 5987435 5987435 5987435.0000 +select companynr,count(price),sum(price),min(price),max(price),avg(price) from t3 group by companynr ; +companynr count(price) sum(price) min(price) max(price) avg(price) +37 12543 309394878010 5987435 39654943 24666736.6667 +78 8362 414611089292 726498 98439034 49582766.0000 +101 4181 3489454238 834598 834598 834598.0000 +154 4181 4112197254950 983543950 983543950 983543950.0000 +311 4181 979599938 234298 234298 234298.0000 +447 4181 9929180954 2374834 2374834 2374834.0000 +512 4181 3288532102 786542 786542 786542.0000 +select distinct mod(companynr,10) from t4 group by companynr; +mod(companynr,10) +0 +9 +4 +6 +7 +1 +3 +8 +5 +select distinct 1 from t4 group by companynr; +1 +1 +select count(distinct fld1) from t2; +count(distinct fld1) +1199 +select companynr,count(distinct fld1) from t2 group by companynr; +companynr count(distinct fld1) +00 82 +29 95 +34 70 +36 215 +37 588 +40 37 +41 52 +50 11 +53 4 +58 23 +65 10 +68 12 +select companynr,count(*) from t2 group by companynr; +companynr count(*) +00 82 +29 95 +34 70 +36 215 +37 588 +40 37 +41 52 +50 11 +53 4 +58 23 +65 10 +68 12 +select companynr,count(distinct concat(fld1,repeat(65,1000))) from t2 group by companynr; +companynr count(distinct concat(fld1,repeat(65,1000))) +00 82 +29 95 +34 70 +36 215 +37 588 +40 37 +41 52 +50 11 +53 4 +58 23 +65 10 +68 12 +select companynr,count(distinct concat(fld1,repeat(65,200))) from t2 group by companynr; +companynr count(distinct concat(fld1,repeat(65,200))) +00 82 +29 95 +34 70 +36 215 +37 588 +40 37 +41 52 +50 11 +53 4 +58 23 +65 10 +68 12 +select companynr,count(distinct floor(fld1/100)) from t2 group by companynr; +companynr count(distinct floor(fld1/100)) +00 47 +29 35 +34 14 +36 69 +37 108 +40 16 +41 11 +50 9 +53 1 +58 1 +65 1 +68 1 +select companynr,count(distinct concat(repeat(65,1000),floor(fld1/100))) from t2 group by companynr; +companynr count(distinct concat(repeat(65,1000),floor(fld1/100))) +00 47 +29 35 +34 14 +36 69 +37 108 +40 16 +41 11 +50 9 +53 1 +58 1 +65 1 +68 1 +select sum(fld1),fld3 from t2 where fld3="Romans" group by fld1 limit 10; +sum(fld1) fld3 +11402 Romans +select name,count(*) from t3 where name='cloakroom' group by name; +name count(*) +cloakroom 4181 +select name,count(*) from t3 where name='cloakroom' and price>10 group by name; +name count(*) +cloakroom 4181 +select count(*) from t3 where name='cloakroom' and price2=823742; +count(*) +4181 +select name,count(*) from t3 where name='cloakroom' and price2=823742 group by name; +name count(*) +cloakroom 4181 +select name,count(*) from t3 where name >= "extramarital" and price <= 39654943 group by name; +name count(*) +extramarital 4181 +gazer 4181 +gems 4181 +Iranizes 4181 +spates 4181 +tucked 4181 +violinist 4181 +select t2.fld3,count(*) from t2,t3 where t2.fld1=158402 and t3.name=t2.fld3 group by t3.name; +fld3 count(*) +spates 4181 +select companynr|0,companyname from t4 group by 1; +companynr|0 companyname +0 Unknown +29 company 1 +34 company 2 +36 company 3 +37 company 4 +40 company 5 +41 company 6 +50 company 11 +53 company 7 +58 company 8 +65 company 9 +68 company 10 +select t2.companynr,companyname,count(*) from t2,t4 where t2.companynr=t4.companynr group by t2.companynr order by companyname; +companynr companyname count(*) +29 company 1 95 +68 company 10 12 +50 company 11 11 +34 company 2 70 +36 company 3 215 +37 company 4 588 +40 company 5 37 +41 company 6 52 +53 company 7 4 +58 company 8 23 +65 company 9 10 +00 Unknown 82 +select t2.fld1,count(*) from t2,t3 where t2.fld1=158402 and t3.name=t2.fld3 group by t3.name; +fld1 count(*) +158402 4181 +select sum(Period)/count(*) from t1; +sum(Period)/count(*) +9410.0000 +select companynr,count(price) as "count",sum(price) as "sum" ,abs(sum(price)/count(price)-avg(price)) as "diff",(0+count(price))*companynr as func from t3 group by companynr; +companynr count sum diff func +37 12543 309394878010 0.0000 464091 +78 8362 414611089292 0.0000 652236 +101 4181 3489454238 0.0000 422281 +154 4181 4112197254950 0.0000 643874 +311 4181 979599938 0.0000 1300291 +447 4181 9929180954 0.0000 1868907 +512 4181 3288532102 0.0000 2140672 +select companynr,sum(price)/count(price) as avg from t3 group by companynr having avg > 70000000 order by avg; +companynr avg +154 983543950.0000 +select companynr,count(*) from t2 group by companynr order by 2 desc; +companynr count(*) +37 588 +36 215 +29 95 +00 82 +34 70 +41 52 +40 37 +58 23 +68 12 +50 11 +65 10 +53 4 +select companynr,count(*) from t2 where companynr > 40 group by companynr order by 2 desc; +companynr count(*) +41 52 +58 23 +68 12 +50 11 +65 10 +53 4 +select t2.fld4,t2.fld1,count(price),sum(price),min(price),max(price),avg(price) from t3,t2 where t3.companynr = 37 and t2.fld1 = t3.t2nr group by fld1,t2.fld4; +fld4 fld1 count(price) sum(price) min(price) max(price) avg(price) +teethe 000001 1 5987435 5987435 5987435 5987435.0000 +dreaded 011401 1 5987435 5987435 5987435 5987435.0000 +scholastics 011402 1 28357832 28357832 28357832 28357832.0000 +audiology 011403 1 39654943 39654943 39654943 39654943.0000 +wallet 011501 1 5987435 5987435 5987435 5987435.0000 +parters 011701 1 5987435 5987435 5987435 5987435.0000 +eschew 011702 1 28357832 28357832 28357832 28357832.0000 +quitter 011703 1 39654943 39654943 39654943 39654943.0000 +neat 012001 1 5987435 5987435 5987435 5987435.0000 +Steinberg 012003 1 39654943 39654943 39654943 39654943.0000 +balled 012301 1 5987435 5987435 5987435 5987435.0000 +persist 012302 1 28357832 28357832 28357832 28357832.0000 +attainments 012303 1 39654943 39654943 39654943 39654943.0000 +capably 012501 1 5987435 5987435 5987435 5987435.0000 +impulsive 012602 1 28357832 28357832 28357832 28357832.0000 +starlet 012603 1 39654943 39654943 39654943 39654943.0000 +featherweight 012701 1 5987435 5987435 5987435 5987435.0000 +pessimist 012702 1 28357832 28357832 28357832 28357832.0000 +daughter 012703 1 39654943 39654943 39654943 39654943.0000 +lawgiver 013601 1 5987435 5987435 5987435 5987435.0000 +stated 013602 1 28357832 28357832 28357832 28357832.0000 +readable 013603 1 39654943 39654943 39654943 39654943.0000 +testicle 013801 1 5987435 5987435 5987435 5987435.0000 +Parsifal 013802 1 28357832 28357832 28357832 28357832.0000 +leavings 013803 1 39654943 39654943 39654943 39654943.0000 +squeaking 013901 1 5987435 5987435 5987435 5987435.0000 +contrasted 016001 1 5987435 5987435 5987435 5987435.0000 +leftover 016201 1 5987435 5987435 5987435 5987435.0000 +whiteners 016202 1 28357832 28357832 28357832 28357832.0000 +erases 016301 1 5987435 5987435 5987435 5987435.0000 +Punjab 016302 1 28357832 28357832 28357832 28357832.0000 +Merritt 016303 1 39654943 39654943 39654943 39654943.0000 +sweetish 018001 1 5987435 5987435 5987435 5987435.0000 +dogging 018002 1 28357832 28357832 28357832 28357832.0000 +scornfully 018003 1 39654943 39654943 39654943 39654943.0000 +fetters 018012 1 28357832 28357832 28357832 28357832.0000 +bivalves 018013 1 39654943 39654943 39654943 39654943.0000 +skulking 018021 1 5987435 5987435 5987435 5987435.0000 +flint 018022 1 28357832 28357832 28357832 28357832.0000 +flopping 018023 1 39654943 39654943 39654943 39654943.0000 +Judas 018032 1 28357832 28357832 28357832 28357832.0000 +vacuuming 018033 1 39654943 39654943 39654943 39654943.0000 +medical 018041 1 5987435 5987435 5987435 5987435.0000 +bloodbath 018042 1 28357832 28357832 28357832 28357832.0000 +subschema 018043 1 39654943 39654943 39654943 39654943.0000 +interdependent 018051 1 5987435 5987435 5987435 5987435.0000 +Graves 018052 1 28357832 28357832 28357832 28357832.0000 +neonatal 018053 1 39654943 39654943 39654943 39654943.0000 +sorters 018061 1 5987435 5987435 5987435 5987435.0000 +epistle 018062 1 28357832 28357832 28357832 28357832.0000 +Conley 018101 1 5987435 5987435 5987435 5987435.0000 +lectured 018102 1 28357832 28357832 28357832 28357832.0000 +Abraham 018103 1 39654943 39654943 39654943 39654943.0000 +cage 018201 1 5987435 5987435 5987435 5987435.0000 +hushes 018202 1 28357832 28357832 28357832 28357832.0000 +Simla 018402 1 28357832 28357832 28357832 28357832.0000 +reporters 018403 1 39654943 39654943 39654943 39654943.0000 +coexist 018601 1 5987435 5987435 5987435 5987435.0000 +Beebe 018602 1 28357832 28357832 28357832 28357832.0000 +Taoism 018603 1 39654943 39654943 39654943 39654943.0000 +Connally 018801 1 5987435 5987435 5987435 5987435.0000 +fetched 018802 1 28357832 28357832 28357832 28357832.0000 +checkpoints 018803 1 39654943 39654943 39654943 39654943.0000 +gritty 018811 1 5987435 5987435 5987435 5987435.0000 +firearm 018812 1 28357832 28357832 28357832 28357832.0000 +minima 019101 1 5987435 5987435 5987435 5987435.0000 +Selfridge 019102 1 28357832 28357832 28357832 28357832.0000 +disable 019103 1 39654943 39654943 39654943 39654943.0000 +witchcraft 019201 1 5987435 5987435 5987435 5987435.0000 +betroth 030501 1 5987435 5987435 5987435 5987435.0000 +Manhattanize 030502 1 28357832 28357832 28357832 28357832.0000 +imprint 030503 1 39654943 39654943 39654943 39654943.0000 +swelling 031901 1 5987435 5987435 5987435 5987435.0000 +interrelationships 036001 1 5987435 5987435 5987435 5987435.0000 +riser 036002 1 28357832 28357832 28357832 28357832.0000 +bee 038001 1 5987435 5987435 5987435 5987435.0000 +kanji 038002 1 28357832 28357832 28357832 28357832.0000 +dental 038003 1 39654943 39654943 39654943 39654943.0000 +railway 038011 1 5987435 5987435 5987435 5987435.0000 +validate 038012 1 28357832 28357832 28357832 28357832.0000 +normalizes 038013 1 39654943 39654943 39654943 39654943.0000 +Kline 038101 1 5987435 5987435 5987435 5987435.0000 +Anatole 038102 1 28357832 28357832 28357832 28357832.0000 +partridges 038103 1 39654943 39654943 39654943 39654943.0000 +recruited 038201 1 5987435 5987435 5987435 5987435.0000 +dimensions 038202 1 28357832 28357832 28357832 28357832.0000 +Chicana 038203 1 39654943 39654943 39654943 39654943.0000 +select t3.companynr,fld3,sum(price) from t3,t2 where t2.fld1 = t3.t2nr and t3.companynr = 512 group by companynr,fld3; +companynr fld3 sum(price) +512 boat 786542 +512 capably 786542 +512 cupboard 786542 +512 decliner 786542 +512 descendants 786542 +512 dopers 786542 +512 erases 786542 +512 Micronesia 786542 +512 Miles 786542 +512 skies 786542 +select t2.companynr,count(*),min(fld3),max(fld3),sum(price),avg(price) from t2,t3 where t3.companynr >= 30 and t3.companynr <= 58 and t3.t2nr = t2.fld1 and 1+1=2 group by t2.companynr; +companynr count(*) min(fld3) max(fld3) sum(price) avg(price) +00 1 Omaha Omaha 5987435 5987435.0000 +36 1 dubbed dubbed 28357832 28357832.0000 +37 83 Abraham Wotan 1908978016 22999735.1325 +50 2 scribbled tapestry 68012775 34006387.5000 +select t3.companynr+0,t3.t2nr,fld3,sum(price) from t3,t2 where t2.fld1 = t3.t2nr and t3.companynr = 37 group by 1,t3.t2nr,fld3,fld3,fld3,fld3,fld3 order by fld1; +t3.companynr+0 t2nr fld3 sum(price) +37 1 Omaha 5987435 +37 11401 breaking 5987435 +37 11402 Romans 28357832 +37 11403 intercepted 39654943 +37 11501 bewilderingly 5987435 +37 11701 astound 5987435 +37 11702 admonishing 28357832 +37 11703 sumac 39654943 +37 12001 flanking 5987435 +37 12003 combed 39654943 +37 12301 Eulerian 5987435 +37 12302 dubbed 28357832 +37 12303 Kane 39654943 +37 12501 annihilates 5987435 +37 12602 Wotan 28357832 +37 12603 snatching 39654943 +37 12701 grazing 5987435 +37 12702 Baird 28357832 +37 12703 celery 39654943 +37 13601 handgun 5987435 +37 13602 foldout 28357832 +37 13603 mystic 39654943 +37 13801 intelligibility 5987435 +37 13802 Augustine 28357832 +37 13803 teethe 39654943 +37 13901 scholastics 5987435 +37 16001 audiology 5987435 +37 16201 wallet 5987435 +37 16202 parters 28357832 +37 16301 eschew 5987435 +37 16302 quitter 28357832 +37 16303 neat 39654943 +37 18001 jarring 5987435 +37 18002 tinily 28357832 +37 18003 balled 39654943 +37 18012 impulsive 28357832 +37 18013 starlet 39654943 +37 18021 lawgiver 5987435 +37 18022 stated 28357832 +37 18023 readable 39654943 +37 18032 testicle 28357832 +37 18033 Parsifal 39654943 +37 18041 Punjab 5987435 +37 18042 Merritt 28357832 +37 18043 Quixotism 39654943 +37 18051 sureties 5987435 +37 18052 puddings 28357832 +37 18053 tapestry 39654943 +37 18061 trimmings 5987435 +37 18062 humility 28357832 +37 18101 tragedies 5987435 +37 18102 skulking 28357832 +37 18103 flint 39654943 +37 18201 relaxing 5987435 +37 18202 offload 28357832 +37 18402 suites 28357832 +37 18403 lists 39654943 +37 18601 vacuuming 5987435 +37 18602 dentally 28357832 +37 18603 humanness 39654943 +37 18801 inch 5987435 +37 18802 Weissmuller 28357832 +37 18803 irresponsibly 39654943 +37 18811 repetitions 5987435 +37 18812 Antares 28357832 +37 19101 ventilate 5987435 +37 19102 pityingly 28357832 +37 19103 interdependent 39654943 +37 19201 Graves 5987435 +37 30501 neonatal 5987435 +37 30502 scribbled 28357832 +37 30503 chafe 39654943 +37 31901 realtor 5987435 +37 36001 elite 5987435 +37 36002 funereal 28357832 +37 38001 Conley 5987435 +37 38002 lectured 28357832 +37 38003 Abraham 39654943 +37 38011 groupings 5987435 +37 38012 dissociate 28357832 +37 38013 coexist 39654943 +37 38101 rusting 5987435 +37 38102 galling 28357832 +37 38103 obliterates 39654943 +37 38201 resumes 5987435 +37 38202 analyzable 28357832 +37 38203 terminator 39654943 +select sum(price) from t3,t2 where t2.fld1 = t3.t2nr and t3.companynr = 512 and t3.t2nr = 38008 and t2.fld1 = 38008 or t2.fld1= t3.t2nr and t3.t2nr = 38008 and t2.fld1 = 38008; +sum(price) +234298 +select t2.fld1,sum(price) from t3,t2 where t2.fld1 = t3.t2nr and t3.companynr = 512 and t3.t2nr = 38008 and t2.fld1 = 38008 or t2.fld1 = t3.t2nr and t3.t2nr = 38008 and t2.fld1 = 38008 or t3.t2nr = t2.fld1 and t2.fld1 = 38008 group by t2.fld1; +fld1 sum(price) +038008 234298 +explain select fld3 from t2 where 1>2 or 2>3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +explain select fld3 from t2 where fld1=fld1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +select companynr,fld1 from t2 HAVING fld1=250501 or fld1=250502; +companynr fld1 +34 250501 +34 250502 +select companynr,fld1 from t2 WHERE fld1>=250501 HAVING fld1<=250502; +companynr fld1 +34 250501 +34 250502 +select companynr,count(*) as count,sum(fld1) as sum from t2 group by companynr having count > 40 and sum/count >= 120000; +companynr count sum +00 82 10355753 +29 95 14473298 +34 70 17788966 +37 588 83602098 +41 52 12816335 +select companynr from t2 group by companynr having count(*) > 40 and sum(fld1)/count(*) >= 120000 ; +companynr +00 +29 +34 +37 +41 +select t2.companynr,companyname,count(*) from t2,t4 where t2.companynr=t4.companynr group by companyname having t2.companynr >= 40; +companynr companyname count(*) +68 company 10 12 +50 company 11 11 +40 company 5 37 +41 company 6 52 +53 company 7 4 +58 company 8 23 +65 company 9 10 +select count(*) from t2; +count(*) +1199 +select count(*) from t2 where fld1 < 098024; +count(*) +387 +select min(fld1) from t2 where fld1>= 098024; +min(fld1) +98024 +select max(fld1) from t2 where fld1>= 098024; +max(fld1) +1232609 +select count(*) from t3 where price2=76234234; +count(*) +4181 +select count(*) from t3 where companynr=512 and price2=76234234; +count(*) +4181 +explain select min(fld1),max(fld1),count(*) from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +select min(fld1),max(fld1),count(*) from t2; +min(fld1) max(fld1) count(*) +0 1232609 1199 +select min(t2nr),max(t2nr) from t3 where t2nr=2115 and price2=823742; +min(t2nr) max(t2nr) +2115 2115 +select count(*),min(t2nr),max(t2nr) from t3 where name='spates' and companynr=78; +count(*) min(t2nr) max(t2nr) +4181 4 41804 +select t2nr,count(*) from t3 where name='gems' group by t2nr limit 20; +t2nr count(*) +9 1 +19 1 +29 1 +39 1 +49 1 +59 1 +69 1 +79 1 +89 1 +99 1 +109 1 +119 1 +129 1 +139 1 +149 1 +159 1 +169 1 +179 1 +189 1 +199 1 +select max(t2nr) from t3 where price=983543950; +max(t2nr) +41807 +select t1.period from t3 = t1 limit 1; +period +1001 +select t1.period from t1 as t1 limit 1; +period +9410 +select t1.period as "Nuvarande period" from t1 as t1 limit 1; +Nuvarande period +9410 +select period as ok_period from t1 limit 1; +ok_period +9410 +select period as ok_period from t1 group by ok_period limit 1; +ok_period +9410 +select 1+1 as summa from t1 group by summa limit 1; +summa +2 +select period as "Nuvarande period" from t1 group by "Nuvarande period" limit 1; +Nuvarande period +9410 +show tables; +Tables_in_test +t1 +t2 +t3 +t4 +show tables from test like "s%"; +Tables_in_test (s%) +show tables from test like "t?"; +Tables_in_test (t?) +show full columns from t2; +Field Type Collation Null Key Default Extra Privileges Comment +auto int(11) NULL NO PRI NULL auto_increment # +fld1 int(6) unsigned zerofill NULL NO UNI 000000 # +companynr tinyint(2) unsigned zerofill NULL NO 00 # +fld3 char(30) latin1_swedish_ci NO MUL # +fld4 char(35) latin1_swedish_ci NO # +fld5 char(35) latin1_swedish_ci NO # +fld6 char(4) latin1_swedish_ci NO # +show full columns from t2 from test like 'f%'; +Field Type Collation Null Key Default Extra Privileges Comment +fld1 int(6) unsigned zerofill NULL NO UNI 000000 # +fld3 char(30) latin1_swedish_ci NO MUL # +fld4 char(35) latin1_swedish_ci NO # +fld5 char(35) latin1_swedish_ci NO # +fld6 char(4) latin1_swedish_ci NO # +show full columns from t2 from test like 's%'; +Field Type Collation Null Key Default Extra Privileges Comment +show keys from t2; +Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment +t2 0 PRIMARY 1 auto A 1199 NULL NULL BTREE +t2 0 fld1 1 fld1 A 1199 NULL NULL BTREE +t2 1 fld3 1 fld3 A NULL NULL NULL BTREE +drop table t4, t3, t2, t1; +DO 1; +DO benchmark(100,1+1),1,1; +do default; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 +do foobar; +ERROR 42S22: Unknown column 'foobar' in 'field list' +CREATE TABLE t1 ( +id mediumint(8) unsigned NOT NULL auto_increment, +pseudo varchar(35) NOT NULL default '', +PRIMARY KEY (id), +UNIQUE KEY pseudo (pseudo) +); +INSERT INTO t1 (pseudo) VALUES ('test'); +INSERT INTO t1 (pseudo) VALUES ('test1'); +SELECT 1 as rnd1 from t1 where rand() > 2; +rnd1 +DROP TABLE t1; +CREATE TABLE t1 (gvid int(10) unsigned default NULL, hmid int(10) unsigned default NULL, volid int(10) unsigned default NULL, mmid int(10) unsigned default NULL, hdid int(10) unsigned default NULL, fsid int(10) unsigned default NULL, ctid int(10) unsigned default NULL, dtid int(10) unsigned default NULL, cost int(10) unsigned default NULL, performance int(10) unsigned default NULL, serialnumber bigint(20) unsigned default NULL, monitored tinyint(3) unsigned default '1', removed tinyint(3) unsigned default '0', target tinyint(3) unsigned default '0', dt_modified timestamp NOT NULL, name varchar(255) binary default NULL, description varchar(255) default NULL, UNIQUE KEY hmid (hmid,volid)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (200001,2,1,1,100,1,1,1,0,0,0,1,0,1,20020425060057,'\\\\ARKIVIO-TESTPDC\\E$',''),(200002,2,2,1,101,1,1,1,0,0,0,1,0,1,20020425060057,'\\\\ARKIVIO-TESTPDC\\C$',''),(200003,1,3,2,NULL,NULL,NULL,NULL,NULL,NULL,NULL,1,0,1,20020425060427,'c:',NULL); +CREATE TABLE t2 ( hmid int(10) unsigned default NULL, volid int(10) unsigned default NULL, sampletid smallint(5) unsigned default NULL, sampletime datetime default NULL, samplevalue bigint(20) unsigned default NULL, KEY idx1 (hmid,volid,sampletid,sampletime)) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1,3,10,'2002-06-01 08:00:00',35),(1,3,1010,'2002-06-01 12:00:01',35); +SELECT a.gvid, (SUM(CASE b.sampletid WHEN 140 THEN b.samplevalue ELSE 0 END)) as the_success,(SUM(CASE b.sampletid WHEN 141 THEN b.samplevalue ELSE 0 END)) as the_fail,(SUM(CASE b.sampletid WHEN 142 THEN b.samplevalue ELSE 0 END)) as the_size,(SUM(CASE b.sampletid WHEN 143 THEN b.samplevalue ELSE 0 END)) as the_time FROM t1 a, t2 b WHERE a.hmid = b.hmid AND a.volid = b.volid AND b.sampletime >= 'wrong-date-value' AND b.sampletime < 'wrong-date-value' AND b.sampletid IN (140, 141, 142, 143) GROUP BY a.gvid; +gvid the_success the_fail the_size the_time +Warnings: +Warning 1292 Incorrect datetime value: 'wrong-date-value' for column 'sampletime' at row 1 +Warning 1292 Incorrect datetime value: 'wrong-date-value' for column 'sampletime' at row 1 +SELECT a.gvid, (SUM(CASE b.sampletid WHEN 140 THEN b.samplevalue ELSE 0 END)) as the_success,(SUM(CASE b.sampletid WHEN 141 THEN b.samplevalue ELSE 0 END)) as the_fail,(SUM(CASE b.sampletid WHEN 142 THEN b.samplevalue ELSE 0 END)) as the_size,(SUM(CASE b.sampletid WHEN 143 THEN b.samplevalue ELSE 0 END)) as the_time FROM t1 a, t2 b WHERE a.hmid = b.hmid AND a.volid = b.volid AND b.sampletime >= NULL AND b.sampletime < NULL AND b.sampletid IN (140, 141, 142, 143) GROUP BY a.gvid; +gvid the_success the_fail the_size the_time +DROP TABLE t1,t2; +create table t1 ( A_Id bigint(20) NOT NULL default '0', A_UpdateBy char(10) NOT NULL default '', A_UpdateDate bigint(20) NOT NULL default '0', A_UpdateSerial int(11) NOT NULL default '0', other_types bigint(20) NOT NULL default '0', wss_type bigint(20) NOT NULL default '0'); +INSERT INTO t1 VALUES (102935998719055004,'brade',1029359987,2,102935229116544068,102935229216544093); +select wss_type from t1 where wss_type ='102935229216544106'; +wss_type +select wss_type from t1 where wss_type ='102935229216544105'; +wss_type +select wss_type from t1 where wss_type ='102935229216544104'; +wss_type +select wss_type from t1 where wss_type ='102935229216544093'; +wss_type +102935229216544093 +select wss_type from t1 where wss_type =102935229216544093; +wss_type +102935229216544093 +drop table t1; +select 1+2,"aaaa",3.13*2.0 into @a,@b,@c; +select @a; +@a +3 +select @b; +@b +aaaa +select @c; +@c +6.260 +create table t1 (a int not null auto_increment primary key); +insert into t1 values (); +insert into t1 values (); +insert into t1 values (); +select * from (t1 as t2 left join t1 as t3 using (a)), t1; +a a +1 1 +2 1 +3 1 +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from t1, (t1 as t2 left join t1 as t3 using (a)); +a a +1 1 +2 1 +3 1 +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from (t1 as t2 left join t1 as t3 using (a)) straight_join t1; +a a +1 1 +2 1 +3 1 +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from t1 straight_join (t1 as t2 left join t1 as t3 using (a)); +a a +1 1 +2 1 +3 1 +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1; +a a +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; +a a +2 1 +3 1 +2 2 +3 2 +2 3 +3 3 +select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 using ( a ); +a +1 +2 +3 +select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) using ( a ); +a +1 +2 +3 +select * from (t1 as t2 left join t1 as t3 using (a)) left outer join t1 on t1.a>1; +a a +1 2 +2 2 +3 2 +1 3 +2 3 +3 3 +select * from t1 left outer join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; +a a +2 1 +3 1 +2 2 +3 2 +2 3 +3 3 +1 NULL +select * from (t1 as t2 left join t1 as t3 using (a)) left join t1 using ( a ); +a +1 +2 +3 +select * from t1 left join (t1 as t2 left join t1 as t3 using (a)) using ( a ); +a +1 +2 +3 +select * from (t1 as t2 left join t1 as t3 using (a)) natural left join t1; +a +1 +2 +3 +select * from t1 natural left join (t1 as t2 left join t1 as t3 using (a)); +a +1 +2 +3 +select * from (t1 as t2 left join t1 as t3 using (a)) right join t1 on t1.a>1; +a a +1 2 +1 3 +2 2 +2 3 +3 2 +3 3 +NULL 1 +select * from t1 right join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; +a a +2 1 +2 2 +2 3 +3 1 +3 2 +3 3 +select * from (t1 as t2 left join t1 as t3 using (a)) right outer join t1 using ( a ); +a +1 +2 +3 +select * from t1 right outer join (t1 as t2 left join t1 as t3 using (a)) using ( a ); +a +1 +2 +3 +select * from (t1 as t2 left join t1 as t3 using (a)) natural right join t1; +a +1 +2 +3 +select * from t1 natural right join (t1 as t2 left join t1 as t3 using (a)); +a +1 +2 +3 +select * from t1 natural join (t1 as t2 left join t1 as t3 using (a)); +a +1 +2 +3 +select * from (t1 as t2 left join t1 as t3 using (a)) natural join t1; +a +1 +2 +3 +drop table t1; +CREATE TABLE t1 ( aa char(2), id int(11) NOT NULL auto_increment, t2_id int(11) NOT NULL default '0', PRIMARY KEY (id), KEY replace_id (t2_id)) ENGINE=MyISAM; +INSERT INTO t1 VALUES ("1",8264,2506),("2",8299,2517),("3",8301,2518),("4",8302,2519),("5",8303,2520),("6",8304,2521),("7",8305,2522); +CREATE TABLE t2 ( id int(11) NOT NULL auto_increment, PRIMARY KEY (id)) ENGINE=MyISAM; +INSERT INTO t2 VALUES (2517), (2518), (2519), (2520), (2521), (2522); +select * from t1, t2 WHERE t1.t2_id = t2.id and t1.t2_id > 0 order by t1.id LIMIT 0, 5; +aa id t2_id id +2 8299 2517 2517 +3 8301 2518 2518 +4 8302 2519 2519 +5 8303 2520 2520 +6 8304 2521 2521 +drop table t1,t2; +create table t1 (id1 int NOT NULL); +create table t2 (id2 int NOT NULL); +create table t3 (id3 int NOT NULL); +create table t4 (id4 int NOT NULL, id44 int NOT NULL, KEY (id4)); +insert into t1 values (1); +insert into t1 values (2); +insert into t2 values (1); +insert into t4 values (1,1); +explain select * from t1 left join t2 on id1 = id2 left join t3 on id1 = id3 +left join t4 on id3 = id4 where id2 = 1 or id4 = 1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 system NULL NULL NULL NULL 0 const row not found +1 SIMPLE t4 const id4 NULL NULL NULL 1 +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 hash_ALL NULL #hash#$hj 4 test.t1.id1 1 Using where; Using join buffer (flat, BNLH join) +select * from t1 left join t2 on id1 = id2 left join t3 on id1 = id3 +left join t4 on id3 = id4 where id2 = 1 or id4 = 1; +id1 id2 id3 id4 id44 +1 1 NULL NULL NULL +drop table t1,t2,t3,t4; +create table t1(s varchar(10) not null); +create table t2(s varchar(10) not null primary key); +create table t3(s varchar(10) not null primary key); +insert into t1 values ('one\t'), ('two\t'); +insert into t2 values ('one\r'), ('two\t'); +insert into t3 values ('one '), ('two\t'); +select * from t1 where s = 'one'; +s +select * from t2 where s = 'one'; +s +select * from t3 where s = 'one'; +s +one +select * from t1,t2 where t1.s = t2.s; +s s +two two +select * from t2,t3 where t2.s = t3.s; +s s +two two +drop table t1, t2, t3; +create table t1 (a integer, b integer, index(a), index(b)); +create table t2 (c integer, d integer, index(c), index(d)); +insert into t1 values (1,2), (2,2), (3,2), (4,2); +insert into t2 values (1,3), (2,3), (3,4), (4,4); +explain select * from t1 left join t2 on a=c where d in (4); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) +select * from t1 left join t2 on a=c where d in (4); +a b c d +3 2 3 4 +4 2 4 4 +explain select * from t1 left join t2 on a=c where d = 4; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) +select * from t1 left join t2 on a=c where d = 4; +a b c d +3 2 3 4 +4 2 4 4 +drop table t1, t2; +CREATE TABLE t1 ( +i int(11) NOT NULL default '0', +c char(10) NOT NULL default '', +PRIMARY KEY (i), +UNIQUE KEY c (c) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,'a'); +INSERT INTO t1 VALUES (2,'b'); +INSERT INTO t1 VALUES (3,'c'); +EXPLAIN SELECT i FROM t1 WHERE i=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +DROP TABLE t1; +CREATE TABLE t1 ( a BLOB, INDEX (a(20)) ); +CREATE TABLE t2 ( a BLOB, INDEX (a(20)) ); +INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five'); +INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five'); +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where +DROP TABLE t1, t2; +CREATE TABLE t1 ( city char(30) ); +INSERT INTO t1 VALUES ('London'); +INSERT INTO t1 VALUES ('Paris'); +SELECT * FROM t1 WHERE city='London'; +city +London +SELECT * FROM t1 WHERE city='london'; +city +London +EXPLAIN SELECT * FROM t1 WHERE city='London' AND city='london'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t1 WHERE city='London' AND city='london'; +city +London +EXPLAIN SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London'; +city +London +DROP TABLE t1; +create table t1 (a int(11) unsigned, b int(11) unsigned); +insert into t1 values (1,0), (1,1), (1,2); +select a-b from t1 order by 1; +a-b +0 +1 +18446744073709551615 +select a-b , (a-b < 0) from t1 order by 1; +a-b (a-b < 0) +0 0 +1 0 +18446744073709551615 0 +select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0; +d (a-b >= 0) b +1 1 0 +0 1 1 +18446744073709551615 1 2 +select cast((a - b) as unsigned) from t1 order by 1; +cast((a - b) as unsigned) +0 +1 +18446744073709551615 +drop table t1; +create table t1 (a int(11)); +select all all * from t1; +a +select distinct distinct * from t1; +a +select all distinct * from t1; +ERROR HY000: Incorrect usage of ALL and DISTINCT +select distinct all * from t1; +ERROR HY000: Incorrect usage of ALL and DISTINCT +drop table t1; +CREATE TABLE t1 ( +kunde_intern_id int(10) unsigned NOT NULL default '0', +kunde_id int(10) unsigned NOT NULL default '0', +FK_firma_id int(10) unsigned NOT NULL default '0', +aktuell enum('Ja','Nein') NOT NULL default 'Ja', +vorname varchar(128) NOT NULL default '', +nachname varchar(128) NOT NULL default '', +geloescht enum('Ja','Nein') NOT NULL default 'Nein', +firma varchar(128) NOT NULL default '' +); +INSERT INTO t1 VALUES +(3964,3051,1,'Ja','Vorname1','1Nachname','Nein','Print Schau XXXX'), +(3965,3051111,1,'Ja','Vorname1111','1111Nachname','Nein','Print Schau XXXX'); +SELECT kunde_id ,FK_firma_id ,aktuell, vorname, nachname, geloescht FROM t1 +WHERE +( +( +( '' != '' AND firma LIKE CONCAT('%', '', '%')) +OR +(vorname LIKE CONCAT('%', 'Vorname1', '%') AND +nachname LIKE CONCAT('%', '1Nachname', '%') AND +'Vorname1' != '' AND 'xxxx' != '') +) +AND +( +aktuell = 'Ja' AND geloescht = 'Nein' AND FK_firma_id = 2 +) +) +; +kunde_id FK_firma_id aktuell vorname nachname geloescht +SELECT kunde_id ,FK_firma_id ,aktuell, vorname, nachname, +geloescht FROM t1 +WHERE +( +( +aktuell = 'Ja' AND geloescht = 'Nein' AND FK_firma_id = 2 +) +AND +( +( '' != '' AND firma LIKE CONCAT('%', '', '%') ) +OR +( vorname LIKE CONCAT('%', 'Vorname1', '%') AND +nachname LIKE CONCAT('%', '1Nachname', '%') AND 'Vorname1' != '' AND +'xxxx' != '') +) +) +; +kunde_id FK_firma_id aktuell vorname nachname geloescht +SELECT COUNT(*) FROM t1 WHERE +( 0 OR (vorname LIKE '%Vorname1%' AND nachname LIKE '%1Nachname%' AND 1)) +AND FK_firma_id = 2; +COUNT(*) +0 +drop table t1; +CREATE TABLE t1 (b BIGINT(20) UNSIGNED NOT NULL, PRIMARY KEY (b)); +INSERT INTO t1 VALUES (0x8000000000000000); +SELECT b FROM t1 WHERE b=0x8000000000000000; +b +9223372036854775808 +DROP TABLE t1; +CREATE TABLE `t1` ( `gid` int(11) default NULL, `uid` int(11) default NULL); +CREATE TABLE `t2` ( `ident` int(11) default NULL, `level` char(16) default NULL); +INSERT INTO `t2` VALUES (0,'READ'); +CREATE TABLE `t3` ( `id` int(11) default NULL, `name` char(16) default NULL); +INSERT INTO `t3` VALUES (1,'fs'); +select * from t3 left join t1 on t3.id = t1.uid, t2 where t2.ident in (0, t1.gid, t3.id, 0); +id name gid uid ident level +1 fs NULL NULL 0 READ +drop table t1,t2,t3; +CREATE TABLE t1 ( +acct_id int(11) NOT NULL default '0', +profile_id smallint(6) default NULL, +UNIQUE KEY t1$acct_id (acct_id), +KEY t1$profile_id (profile_id) +); +INSERT INTO t1 VALUES (132,17),(133,18); +CREATE TABLE t2 ( +profile_id smallint(6) default NULL, +queue_id int(11) default NULL, +seq int(11) default NULL, +KEY t2$queue_id (queue_id) +); +INSERT INTO t2 VALUES (17,31,4),(17,30,3),(17,36,2),(17,37,1); +CREATE TABLE t3 ( +id int(11) NOT NULL default '0', +qtype int(11) default NULL, +seq int(11) default NULL, +warn_lvl int(11) default NULL, +crit_lvl int(11) default NULL, +rr1 tinyint(4) NOT NULL default '0', +rr2 int(11) default NULL, +default_queue tinyint(4) NOT NULL default '0', +KEY t3$qtype (qtype), +KEY t3$id (id) +); +INSERT INTO t3 VALUES (30,1,29,NULL,NULL,0,NULL,0),(31,1,28,NULL,NULL,0,NULL,0), +(36,1,34,NULL,NULL,0,NULL,0),(37,1,35,NULL,NULL,0,121,0); +SELECT COUNT(*) FROM t1 a STRAIGHT_JOIN t2 pq STRAIGHT_JOIN t3 q +WHERE +(pq.profile_id = a.profile_id) AND (a.acct_id = 132) AND +(pq.queue_id = q.id) AND (q.rr1 <> 1); +COUNT(*) +4 +drop table t1,t2,t3; +create table t1 (f1 int); +insert into t1 values (1),(NULL); +create table t2 (f2 int, f3 int, f4 int); +create index idx1 on t2 (f4); +insert into t2 values (1,2,3),(2,4,6); +select A.f2 from t1 left join t2 A on A.f2 = f1 where A.f3=(select min(f3) +from t2 C where A.f4 = C.f4) or A.f3 IS NULL; +f2 +1 +NULL +drop table t1,t2; +create table t2 (a tinyint unsigned); +create index t2i on t2(a); +insert into t2 values (0), (254), (255); +explain select * from t2 where a > -1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index t2i t2i 2 NULL 3 Using where; Using index +select * from t2 where a > -1; +a +0 +254 +255 +drop table t2; +CREATE TABLE t1 (a int, b int, c int); +INSERT INTO t1 +SELECT 50, 3, 3 FROM DUAL +WHERE NOT EXISTS +(SELECT * FROM t1 WHERE a = 50 AND b = 3); +SELECT * FROM t1; +a b c +50 3 3 +INSERT INTO t1 +SELECT 50, 3, 3 FROM DUAL +WHERE NOT EXISTS +(SELECT * FROM t1 WHERE a = 50 AND b = 3); +select found_rows(); +found_rows() +0 +SELECT * FROM t1; +a b c +50 3 3 +select count(*) from t1; +count(*) +1 +select found_rows(); +found_rows() +1 +select count(*) from t1 limit 2,3; +count(*) +select found_rows(); +found_rows() +0 +select SQL_CALC_FOUND_ROWS count(*) from t1 limit 2,3; +count(*) +select found_rows(); +found_rows() +1 +DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +(SELECT a, b AS c FROM t1) ORDER BY c+1; +a c +(SELECT a, b AS c FROM t1) ORDER BY b+1; +a c +SELECT a, b AS c FROM t1 ORDER BY c+1; +a c +SELECT a, b AS c FROM t1 ORDER BY b+1; +a c +drop table t1; +create table t1(f1 int, f2 int); +create table t2(f3 int); +select f1 from t1,t2 where f1=f2 and (f1,f2) = ((1,1)); +f1 +select f1 from t1,t2 where f1=f2 and (f1,NULL) = ((1,1)); +f1 +select f1 from t1,t2 where f1=f2 and (f1,f2) = ((1,NULL)); +f1 +insert into t1 values(1,1),(2,null); +insert into t2 values(2); +select * from t1,t2 where f1=f3 and (f1,f2) = (2,null); +f1 f2 f3 +select * from t1,t2 where f1=f3 and (f1,f2) <=> (2,null); +f1 f2 f3 +2 NULL 2 +drop table t1,t2; +create table t1 (f1 int not null auto_increment primary key, f2 varchar(10)); +create table t11 like t1; +insert into t1 values(1,""),(2,""); +show table status like 't1%'; +Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment +t1 MyISAM 10 Dynamic 2 20 X X X X X X X X latin1_swedish_ci NULL +t11 MyISAM 10 Dynamic 0 0 X X X X X X X X latin1_swedish_ci NULL +select 123 as a from t1 where f1 is null; +a +drop table t1,t11; +CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL, UNIQUE idx (a,b) ); +INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(1,4); +CREATE TABLE t2 ( a INT NOT NULL, b INT NOT NULL, e INT ); +INSERT INTO t2 VALUES ( 1,10,1), (1,10,2), (1,11,1), (1,11,2), (1,2,1), (1,2,2),(1,2,3); +SELECT t2.a, t2.b, IF(t1.b IS NULL,'',e) AS c, COUNT(*) AS d FROM t2 LEFT JOIN +t1 ON t2.a = t1.a AND t2.b = t1.b GROUP BY a, b, c; +a b c d +1 2 1 1 +1 2 2 1 +1 2 3 1 +1 10 2 +1 11 2 +SELECT t2.a, t2.b, IF(t1.b IS NULL,'',e) AS c, COUNT(*) AS d FROM t2 LEFT JOIN +t1 ON t2.a = t1.a AND t2.b = t1.b GROUP BY t1.a, t1.b, c; +a b c d +1 10 4 +1 2 1 1 +1 2 2 1 +1 2 3 1 +SELECT t2.a, t2.b, IF(t1.b IS NULL,'',e) AS c, COUNT(*) AS d FROM t2 LEFT JOIN +t1 ON t2.a = t1.a AND t2.b = t1.b GROUP BY t2.a, t2.b, c; +a b c d +1 2 1 1 +1 2 2 1 +1 2 3 1 +1 10 2 +1 11 2 +SELECT t2.a, t2.b, IF(t1.b IS NULL,'',e) AS c, COUNT(*) AS d FROM t2,t1 +WHERE t2.a = t1.a AND t2.b = t1.b GROUP BY a, b, c; +a b c d +1 2 1 1 +1 2 2 1 +1 2 3 1 +DROP TABLE IF EXISTS t1, t2; +create table t1 (f1 int primary key, f2 int); +create table t2 (f3 int, f4 int, primary key(f3,f4)); +insert into t1 values (1,1); +insert into t2 values (1,1),(1,2); +select distinct count(f2) >0 from t1 left join t2 on f1=f3 group by f1; +count(f2) >0 +1 +drop table t1,t2; +create table t1 (f1 int,f2 int); +insert into t1 values(1,1); +create table t2 (f3 int, f4 int, primary key(f3,f4)); +insert into t2 values(1,1); +select * from t1 where f1 in (select f3 from t2 where (f3,f4)= (select f3,f4 from t2)); +f1 f2 +1 1 +drop table t1,t2; +CREATE TABLE t1(a int, b int, c int, KEY b(b), KEY c(c)); +insert into t1 values (1,0,0),(2,0,0); +CREATE TABLE t2 (a int, b varchar(2), c varchar(2), PRIMARY KEY(a)); +insert into t2 values (1,'',''), (2,'',''); +CREATE TABLE t3 (a int, b int, PRIMARY KEY (a,b), KEY a (a), KEY b (b)); +insert into t3 values (1,1),(1,2); +explain select straight_join DISTINCT t2.a,t2.b, t1.c from t1, t3, t2 +where (t1.c=t2.a or (t1.c=t3.a and t2.a=t3.b)) and t1.b=556476786 and +t2.b like '%%' order by t2.b limit 0,1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref b,c b 5 const 1 Using temporary; Using filesort +1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1) +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int, INDEX idx(a)); +INSERT INTO t1 VALUES (2), (3), (1); +EXPLAIN SELECT * FROM t1 IGNORE INDEX (idx); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +EXPLAIN SELECT * FROM t1 IGNORE INDEX (a); +ERROR 42000: Key 'a' doesn't exist in table 't1' +EXPLAIN SELECT * FROM t1 FORCE INDEX (a); +ERROR 42000: Key 'a' doesn't exist in table 't1' +DROP TABLE t1; +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (1,1), (2,1), (4,10); +CREATE TABLE t2 (a int PRIMARY KEY, b int, KEY b (b)); +INSERT INTO t2 VALUES (1,NULL), (2,10); +ALTER TABLE t1 ENABLE KEYS; +EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index b b 5 NULL 2 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; +a b a b +1 NULL 1 1 +1 NULL 2 1 +1 NULL 4 10 +2 10 4 10 +EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 index b b 5 NULL 2 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; +a b a b +1 NULL 1 1 +1 NULL 2 1 +1 NULL 4 10 +2 10 4 10 +DROP TABLE IF EXISTS t1,t2; +CREATE TABLE t1 (key1 float default NULL, UNIQUE KEY key1 (key1)); +CREATE TABLE t2 (key2 float default NULL, UNIQUE KEY key2 (key2)); +INSERT INTO t1 VALUES (0.3762),(0.3845),(0.6158),(0.7941); +INSERT INTO t2 VALUES (1.3762),(1.3845),(1.6158),(1.7941); +explain select max(key1) from t1 where key1 <= 0.6158; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select max(key2) from t2 where key2 <= 1.6158; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select min(key1) from t1 where key1 >= 0.3762; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select min(key2) from t2 where key2 >= 1.3762; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select max(key1), min(key2) from t1, t2 +where key1 <= 0.6158 and key2 >= 1.3762; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +explain select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +select max(key1) from t1 where key1 <= 0.6158; +max(key1) +0.615800023078918 +select max(key2) from t2 where key2 <= 1.6158; +max(key2) +1.61580002307892 +select min(key1) from t1 where key1 >= 0.3762; +min(key1) +0.376199990510941 +select min(key2) from t2 where key2 >= 1.3762; +min(key2) +1.37619996070862 +select max(key1), min(key2) from t1, t2 +where key1 <= 0.6158 and key2 >= 1.3762; +max(key1) min(key2) +0.615800023078918 1.37619996070862 +select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5; +max(key1) +0.615800023078918 +select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5; +min(key1) +0.376199990510941 +DROP TABLE t1,t2; +CREATE TABLE t1 (i BIGINT UNSIGNED NOT NULL); +INSERT INTO t1 VALUES (10); +SELECT i='1e+01',i=1e+01, i in (1e+01,1e+01), i in ('1e+01','1e+01') FROM t1; +i='1e+01' i=1e+01 i in (1e+01,1e+01) i in ('1e+01','1e+01') +1 1 1 1 +DROP TABLE t1; +create table t1(a bigint unsigned, b bigint); +insert into t1 values (0xfffffffffffffffff, 0xfffffffffffffffff), +(0x10000000000000000, 0x10000000000000000), +(0x8fffffffffffffff, 0x8fffffffffffffff); +Warnings: +Warning 1264 Out of range value for column 'a' at row 1 +Warning 1264 Out of range value for column 'b' at row 1 +Warning 1264 Out of range value for column 'a' at row 2 +Warning 1264 Out of range value for column 'b' at row 2 +Warning 1264 Out of range value for column 'b' at row 3 +select hex(a), hex(b) from t1; +hex(a) hex(b) +FFFFFFFFFFFFFFFF 7FFFFFFFFFFFFFFF +FFFFFFFFFFFFFFFF 7FFFFFFFFFFFFFFF +8FFFFFFFFFFFFFFF 7FFFFFFFFFFFFFFF +drop table t1; +CREATE TABLE t1 (c0 int); +CREATE TABLE t2 (c0 int); +INSERT INTO t1 VALUES(@@connect_timeout); +INSERT INTO t2 VALUES(@@connect_timeout); +SELECT * FROM t1 JOIN t2 ON t1.c0 = t2.c0 WHERE (t1.c0 <=> @@connect_timeout); +c0 c0 +X X +DROP TABLE t1, t2; +End of 4.1 tests +CREATE TABLE t1 ( +K2C4 varchar(4) character set latin1 collate latin1_bin NOT NULL default '', +K4N4 varchar(4) character set latin1 collate latin1_bin NOT NULL default '0000', +F2I4 int(11) NOT NULL default '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO t1 VALUES +('W%RT', '0100', 1), +('W-RT', '0100', 1), +('WART', '0100', 1), +('WART', '0200', 1), +('WERT', '0100', 2), +('WORT','0200', 2), +('WT', '0100', 2), +('W_RT', '0100', 2), +('WaRT', '0100', 3), +('WART', '0300', 3), +('WRT' , '0400', 3), +('WURM', '0500', 3), +('W%T', '0600', 4), +('WA%T', '0700', 4), +('WA_T', '0800', 4); +SELECT K2C4, K4N4, F2I4 FROM t1 +WHERE K2C4 = 'WART' AND +(F2I4 = 2 AND K2C4 = 'WART' OR (F2I4 = 2 OR K4N4 = '0200')); +K2C4 K4N4 F2I4 +WART 0200 1 +SELECT K2C4, K4N4, F2I4 FROM t1 +WHERE K2C4 = 'WART' AND (K2C4 = 'WART' OR K4N4 = '0200'); +K2C4 K4N4 F2I4 +WART 0100 1 +WART 0200 1 +WART 0300 3 +DROP TABLE t1; +create table t1 (a int, b int); +create table t2 like t1; +select t1.a from (t1 inner join t2 on t1.a=t2.a) where t2.a=1; +a +select t1.a from ((t1 inner join t2 on t1.a=t2.a)) where t2.a=1; +a +select x.a, y.a, z.a from ( (t1 x inner join t2 y on x.a=y.a) inner join t2 z on y.a=z.a) WHERE x.a=1; +a a a +drop table t1,t2; +create table t1 (s1 varchar(5)); +insert into t1 values ('Wall'); +select min(s1) from t1 group by s1 with rollup; +min(s1) +Wall +Wall +drop table t1; +create table t1 (s1 int) engine=myisam; +insert into t1 values (0); +select avg(distinct s1) from t1 group by s1 with rollup; +avg(distinct s1) +0.0000 +0.0000 +drop table t1; +create table t1 (s1 int); +insert into t1 values (null),(1); +select distinct avg(s1) as x from t1 group by s1 with rollup; +x +NULL +1.0000 +drop table t1; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int); +INSERT INTO t1 VALUES (1), (2), (3), (4), (5); +INSERT INTO t2 VALUES (2), (4), (6); +SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a; +a +2 +4 +EXPLAIN SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where +1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.a 3 Using where; Using join buffer (flat, BNLH join) +EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t2.a 5 Using where; Using join buffer (flat, BNLH join) +DROP TABLE t1,t2; +select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0; +x'10' + 0 X'10' + 0 b'10' + 0 B'10' + 0 +16 16 2 2 +create table t1 (f1 varchar(6) default NULL, f2 int(6) primary key not null); +create table t2 (f3 varchar(5) not null, f4 varchar(5) not null, UNIQUE KEY UKEY (f3,f4)); +insert into t1 values (" 2", 2); +insert into t2 values (" 2", " one "),(" 2", " two "); +select * from t1 left join t2 on f1 = f3; +f1 f2 f3 f4 + 2 2 2 one + 2 2 2 two +drop table t1,t2; +create table t1 (empnum smallint, grp int); +create table t2 (empnum int, name char(5)); +insert into t1 values(1,1); +insert into t2 values(1,'bob'); +create view v1 as select * from t2 inner join t1 using (empnum); +select * from v1; +empnum name grp +1 bob 1 +drop table t1,t2; +drop view v1; +create table t1 (pk int primary key, b int); +create table t2 (pk int primary key, c int); +select pk from t1 inner join t2 using (pk); +pk +drop table t1,t2; +create table t1 (s1 int, s2 char(5), s3 decimal(10)); +create view v1 as select s1, s2, 'x' as s3 from t1; +select * from t1 natural join v1; +s1 s2 s3 +insert into t1 values (1,'x',5); +select * from t1 natural join v1; +s1 s2 s3 +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: 'x' +drop table t1; +drop view v1; +create table t1(a1 int); +create table t2(a2 int); +insert into t1 values(1),(2); +insert into t2 values(1),(2); +create view v2 (c) as select a1 from t1; +select * from t1 natural left join t2; +a1 a2 +1 1 +2 1 +1 2 +2 2 +select * from t1 natural right join t2; +a2 a1 +1 1 +2 1 +1 2 +2 2 +select * from v2 natural left join t2; +c a2 +1 1 +2 1 +1 2 +2 2 +select * from v2 natural right join t2; +a2 c +1 1 +2 1 +1 2 +2 2 +drop table t1, t2; +drop view v2; +create table t1 (a int(10), t1_val int(10)); +create table t2 (b int(10), t2_val int(10)); +create table t3 (a int(10), b int(10)); +insert into t1 values (1,1),(2,2); +insert into t2 values (1,1),(2,2),(3,3); +insert into t3 values (1,1),(2,1),(3,1),(4,1); +select * from t1 natural join t2 natural join t3; +a b t1_val t2_val +1 1 1 1 +2 1 2 1 +select * from t1 natural join t3 natural join t2; +b a t1_val t2_val +1 1 1 1 +1 2 2 1 +drop table t1, t2, t3; +DO IFNULL(NULL, NULL); +SELECT CAST(IFNULL(NULL, NULL) AS DECIMAL); +CAST(IFNULL(NULL, NULL) AS DECIMAL) +NULL +SELECT ABS(IFNULL(NULL, NULL)); +ABS(IFNULL(NULL, NULL)) +NULL +SELECT IFNULL(NULL, NULL); +IFNULL(NULL, NULL) +NULL +SET @OLD_SQL_MODE12595=@@SQL_MODE, @@SQL_MODE=''; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; +Variable_name Value +sql_mode +CREATE TABLE BUG_12595(a varchar(100)); +INSERT INTO BUG_12595 VALUES ('hakan%'), ('hakank'), ("ha%an"); +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +a +hakan% +hakank +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE ''; +a +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha%%an' ESCAPE '%'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE '\\'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; +a +ha%an +SET @@SQL_MODE='NO_BACKSLASH_ESCAPES'; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; +Variable_name Value +sql_mode NO_BACKSLASH_ESCAPES +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +a +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE '\\'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\n%' ESCAPE '\n'; +ERROR HY000: Incorrect arguments to ESCAPE +SET @@SQL_MODE=@OLD_SQL_MODE12595; +DROP TABLE BUG_12595; +create table t1 (a char(1)); +create table t2 (a char(1)); +insert into t1 values ('a'),('b'),('c'); +insert into t2 values ('b'),('c'),('d'); +select a from t1 natural join t2; +a +b +c +select * from t1 natural join t2 where a = 'b'; +a +b +drop table t1, t2; +CREATE TABLE t1 (`id` TINYINT); +CREATE TABLE t2 (`id` TINYINT); +CREATE TABLE t3 (`id` TINYINT); +INSERT INTO t1 VALUES (1),(2),(3); +INSERT INTO t2 VALUES (2); +INSERT INTO t3 VALUES (3); +SELECT t1.id,t3.id FROM t1 JOIN t2 ON (t2.id=t1.id) LEFT JOIN t3 USING (id); +ERROR 23000: Column 'id' in from clause is ambiguous +SELECT t1.id,t3.id FROM t1 JOIN t2 ON (t2.notacolumn=t1.id) LEFT JOIN t3 USING (id); +ERROR 23000: Column 'id' in from clause is ambiguous +SELECT id,t3.id FROM t1 JOIN t2 ON (t2.id=t1.id) LEFT JOIN t3 USING (id); +ERROR 23000: Column 'id' in from clause is ambiguous +SELECT id,t3.id FROM (t1 JOIN t2 ON (t2.id=t1.id)) LEFT JOIN t3 USING (id); +ERROR 23000: Column 'id' in from clause is ambiguous +drop table t1, t2, t3; +create table t1 (a int(10),b int(10)); +create table t2 (a int(10),b int(10)); +insert into t1 values (1,10),(2,20),(3,30); +insert into t2 values (1,10); +select * from t1 inner join t2 using (A); +a b b +1 10 10 +select * from t1 inner join t2 using (a); +a b b +1 10 10 +drop table t1, t2; +create table t1 (a int, c int); +create table t2 (b int); +create table t3 (b int, a int); +create table t4 (c int); +insert into t1 values (1,1); +insert into t2 values (1); +insert into t3 values (1,1); +insert into t4 values (1); +select * from t1 join t2 join t3 on (t2.b = t3.b and t1.a = t3.a); +a c b b a +1 1 1 1 1 +select * from t1, t2 join t3 on (t2.b = t3.b and t1.a = t3.a); +ERROR 42S22: Unknown column 't1.a' in 'on clause' +select * from t1 join t2 join t3 join t4 on (t1.a = t4.c and t2.b = t4.c); +a c b b a c +1 1 1 1 1 1 +select * from t1 join t2 join t4 using (c); +c a b +1 1 1 +drop table t1, t2, t3, t4; +create table t1(x int, y int); +create table t2(x int, y int); +create table t3(x int, primary key(x)); +insert into t1 values (1, 1), (2, 1), (3, 1), (4, 3), (5, 6), (6, 6); +insert into t2 values (1, 1), (2, 1), (3, 3), (4, 6), (5, 6); +insert into t3 values (1), (2), (3), (4), (5); +select t1.x, t3.x from t1, t2, t3 where t1.x = t2.x and t3.x >= t1.y and t3.x <= t2.y; +x x +1 1 +2 1 +3 1 +3 2 +3 3 +4 3 +4 4 +4 5 +drop table t1,t2,t3; +create table t1 (id char(16) not null default '', primary key (id)); +insert into t1 values ('100'),('101'),('102'); +create table t2 (id char(16) default null); +insert into t2 values (1); +create view v1 as select t1.id from t1; +create view v2 as select t2.id from t2; +create view v3 as select (t1.id+2) as id from t1 natural left join t2; +select t1.id from t1 left join v2 using (id); +id +100 +101 +102 +select t1.id from v2 right join t1 using (id); +id +100 +101 +102 +select t1.id from t1 left join v3 using (id); +id +102 +100 +101 +select * from t1 left join v2 using (id); +id +100 +101 +102 +select * from v2 right join t1 using (id); +id +100 +101 +102 +select * from t1 left join v3 using (id); +id +102 +100 +101 +select v1.id from v1 left join v2 using (id); +id +100 +101 +102 +select v1.id from v2 right join v1 using (id); +id +100 +101 +102 +select v1.id from v1 left join v3 using (id); +id +102 +100 +101 +select * from v1 left join v2 using (id); +id +100 +101 +102 +select * from v2 right join v1 using (id); +id +100 +101 +102 +select * from v1 left join v3 using (id); +id +102 +100 +101 +drop table t1, t2; +drop view v1, v2, v3; +create table t1 (id int(11) not null default '0'); +insert into t1 values (123),(191),(192); +create table t2 (id char(16) character set utf8 not null); +insert into t2 values ('58013'),('58014'),('58015'),('58016'); +create table t3 (a_id int(11) not null, b_id char(16) character set utf8); +insert into t3 values (123,null),(123,null),(123,null),(123,null),(123,null),(123,'58013'); +select count(*) +from t1 inner join (t3 left join t2 on t2.id = t3.b_id) on t1.id = t3.a_id; +count(*) +6 +select count(*) +from t1 inner join (t2 right join t3 on t2.id = t3.b_id) on t1.id = t3.a_id; +count(*) +6 +drop table t1,t2,t3; +create table t1 (a int); +create table t2 (b int); +create table t3 (c int); +select * from t1 join t2 join t3 on (t1.a=t3.c); +a b c +select * from t1 join t2 left join t3 on (t1.a=t3.c); +a b c +select * from t1 join t2 right join t3 on (t1.a=t3.c); +a b c +select * from t1 join t2 straight_join t3 on (t1.a=t3.c); +a b c +drop table t1, t2 ,t3; +create table t1(f1 int, f2 date); +insert into t1 values(1,'2005-01-01'),(2,'2005-09-01'),(3,'2005-09-30'), +(4,'2005-10-01'),(5,'2005-12-30'); +select * from t1 where f2 >= 0 order by f2; +f1 f2 +1 2005-01-01 +2 2005-09-01 +3 2005-09-30 +4 2005-10-01 +5 2005-12-30 +select * from t1 where f2 >= '0000-00-00' order by f2; +f1 f2 +1 2005-01-01 +2 2005-09-01 +3 2005-09-30 +4 2005-10-01 +5 2005-12-30 +select * from t1 where f2 >= '2005-09-31' order by f2; +f1 f2 +4 2005-10-01 +5 2005-12-30 +select * from t1 where f2 >= '2005-09-3a' order by f2; +f1 f2 +3 2005-09-30 +4 2005-10-01 +5 2005-12-30 +Warnings: +Warning 1292 Incorrect date value: '2005-09-3a' for column 'f2' at row 1 +select * from t1 where f2 <= '2005-09-31' order by f2; +f1 f2 +1 2005-01-01 +2 2005-09-01 +3 2005-09-30 +select * from t1 where f2 <= '2005-09-3a' order by f2; +f1 f2 +1 2005-01-01 +2 2005-09-01 +Warnings: +Warning 1292 Incorrect date value: '2005-09-3a' for column 'f2' at row 1 +drop table t1; +create table t1 (f1 int, f2 int); +insert into t1 values (1, 30), (2, 20), (3, 10); +create algorithm=merge view v1 as select f1, f2 from t1; +create algorithm=merge view v2 (f2, f1) as select f1, f2 from t1; +create algorithm=merge view v3 as select t1.f1 as f2, t1.f2 as f1 from t1; +select t1.f1 as x1, f1 from t1 order by t1.f1; +x1 f1 +1 1 +2 2 +3 3 +select v1.f1 as x1, f1 from v1 order by v1.f1; +x1 f1 +1 1 +2 2 +3 3 +select v2.f1 as x1, f1 from v2 order by v2.f1; +x1 f1 +10 10 +20 20 +30 30 +select v3.f1 as x1, f1 from v3 order by v3.f1; +x1 f1 +10 10 +20 20 +30 30 +select f1, f2, v1.f1 as x1 from v1 order by v1.f1; +f1 f2 x1 +1 30 1 +2 20 2 +3 10 3 +select f1, f2, v2.f1 as x1 from v2 order by v2.f1; +f1 f2 x1 +10 3 10 +20 2 20 +30 1 30 +select f1, f2, v3.f1 as x1 from v3 order by v3.f1; +f1 f2 x1 +10 3 10 +20 2 20 +30 1 30 +drop table t1; +drop view v1, v2, v3; +CREATE TABLE t1(key_a int4 NOT NULL, optimus varchar(32), PRIMARY KEY(key_a)); +CREATE TABLE t2(key_a int4 NOT NULL, prime varchar(32), PRIMARY KEY(key_a)); +CREATE table t3(key_a int4 NOT NULL, key_b int4 NOT NULL, foo varchar(32), +PRIMARY KEY(key_a,key_b)); +INSERT INTO t1 VALUES (0,''); +INSERT INTO t1 VALUES (1,'i'); +INSERT INTO t1 VALUES (2,'j'); +INSERT INTO t1 VALUES (3,'k'); +INSERT INTO t2 VALUES (1,'r'); +INSERT INTO t2 VALUES (2,'s'); +INSERT INTO t2 VALUES (3,'t'); +INSERT INTO t3 VALUES (1,5,'x'); +INSERT INTO t3 VALUES (1,6,'y'); +INSERT INTO t3 VALUES (2,5,'xx'); +INSERT INTO t3 VALUES (2,6,'yy'); +INSERT INTO t3 VALUES (2,7,'zz'); +INSERT INTO t3 VALUES (3,5,'xxx'); +SELECT t2.key_a,foo +FROM t1 INNER JOIN t2 ON t1.key_a = t2.key_a +INNER JOIN t3 ON t1.key_a = t3.key_a +WHERE t2.key_a=2 and key_b=5; +key_a foo +2 xx +EXPLAIN SELECT t2.key_a,foo +FROM t1 INNER JOIN t2 ON t1.key_a = t2.key_a +INNER JOIN t3 ON t1.key_a = t3.key_a +WHERE t2.key_a=2 and key_b=5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t3 const PRIMARY PRIMARY 8 const,const 1 +SELECT t2.key_a,foo +FROM t1 INNER JOIN t2 ON t2.key_a = t1.key_a +INNER JOIN t3 ON t1.key_a = t3.key_a +WHERE t2.key_a=2 and key_b=5; +key_a foo +2 xx +EXPLAIN SELECT t2.key_a,foo +FROM t1 INNER JOIN t2 ON t2.key_a = t1.key_a +INNER JOIN t3 ON t1.key_a = t3.key_a +WHERE t2.key_a=2 and key_b=5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t3 const PRIMARY PRIMARY 8 const,const 1 +DROP TABLE t1,t2,t3; +create table t1 (f1 int); +insert into t1 values(1),(2); +create table t2 (f2 int, f3 int, key(f2)); +insert into t2 values(1,1),(2,2); +create table t3 (f4 int not null); +insert into t3 values (2),(2),(2); +select f1,(select count(*) from t2,t3 where f2=f1 and f3=f4) as count from t1; +f1 count +1 0 +2 3 +drop table t1,t2,t3; +create table t1 (f1 int unique); +create table t2 (f2 int unique); +create table t3 (f3 int unique); +insert into t1 values(1),(2); +insert into t2 values(1),(2); +insert into t3 values(1),(NULL); +select * from t3 where f3 is null; +f3 +NULL +select t2.f2 from t1 left join t2 on f1=f2 join t3 on f1=f3 where f1=1; +f2 +1 +drop table t1,t2,t3; +create table t1(f1 char, f2 char not null); +insert into t1 values(null,'a'); +create table t2 (f2 char not null); +insert into t2 values('b'); +select * from t1 left join t2 on f1=t2.f2 where t1.f2='a'; +f1 f2 f2 +NULL a NULL +drop table t1,t2; +select * from (select * left join t on f1=f2) tt; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'on f1=f2) tt' at line 1 +CREATE TABLE t1 (sku int PRIMARY KEY, pr int); +CREATE TABLE t2 (sku int PRIMARY KEY, sppr int, name varchar(255)); +INSERT INTO t1 VALUES +(10, 10), (20, 10), (30, 20), (40, 30), (50, 10), (60, 10); +INSERT INTO t2 VALUES +(10, 10, 'aaa'), (20, 10, 'bbb'), (30, 10, 'ccc'), (40, 20, 'ddd'), +(50, 10, 'eee'), (60, 20, 'fff'), (70, 20, 'ggg'), (80, 30, 'hhh'); +SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr +FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku); +sku sppr name sku pr +20 10 bbb 10 10 +20 10 bbb 20 10 +EXPLAIN +SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr +FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan +DROP TABLE t1,t2; +CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL); +INSERT t1 SET i = 0; +UPDATE t1 SET i = -1; +Warnings: +Warning 1264 Out of range value for column 'i' at row 1 +SELECT * FROM t1; +i +0 +UPDATE t1 SET i = CAST(i - 1 AS SIGNED); +Warnings: +Warning 1264 Out of range value for column 'i' at row 1 +SELECT * FROM t1; +i +0 +UPDATE t1 SET i = i - 1; +Warnings: +Warning 1264 Out of range value for column 'i' at row 1 +SELECT * FROM t1; +i +255 +DROP TABLE t1; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, b int, c int, e int, primary key(a,b,c)); +insert into t2 select A.a, B.a, C.a, C.a from t1 A, t1 B, t1 C; +analyze table t2; +Table Op Msg_type Msg_text +test.t2 analyze status OK +select 'In next EXPLAIN, B.rows must be exactly 10:' Z; +Z +In next EXPLAIN, B.rows must be exactly 10: +explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5 +and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +drop table t1, t2; +CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b)); +INSERT INTO t1 VALUES (1, 3), (9,4), (7,5), (4,5), (6,2), +(3,1), (5,1), (8,9), (2,2), (0,9); +CREATE TABLE t2 (c int, d int, f int, INDEX(c,f)); +INSERT INTO t2 VALUES +(1,0,0), (1,0,1), (2,0,0), (2,0,1), (3,0,0), (4,0,1), +(5,0,0), (5,0,1), (6,0,0), (0,0,1), (7,0,0), (7,0,1), +(0,0,0), (0,0,1), (8,0,0), (8,0,1), (9,0,0), (9,0,1); +EXPLAIN +SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN +SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1, t2; +create table t1 ( +a int unsigned not null auto_increment primary key, +b bit not null, +c bit not null +); +create table t2 ( +a int unsigned not null auto_increment primary key, +b bit not null, +c int unsigned not null, +d varchar(50) +); +insert into t1 (b,c) values (0,1), (0,1); +insert into t2 (b,c) values (0,1); +select t1.a, t1.b + 0, t1.c + 0, t2.a, t2.b + 0, t2.c, t2.d +from t1 left outer join t2 on t1.a = t2.c and t2.b <> 1 +where t1.b <> 1 order by t1.a; +a t1.b + 0 t1.c + 0 a t2.b + 0 c d +1 0 1 1 0 1 NULL +2 0 1 NULL NULL NULL NULL +drop table t1,t2; +SELECT 0.9888889889 * 1.011111411911; +0.9888889889 * 1.011111411911 +0.9998769417899202067879 +prepare stmt from 'select 1 as " a "'; +Warnings: +Warning 1466 Leading spaces are removed from name ' a ' +execute stmt; +a +1 +CREATE TABLE t1 (a int NOT NULL PRIMARY KEY, b int NOT NULL); +INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4); +CREATE TABLE t2 (c int NOT NULL, INDEX idx(c)); +INSERT INTO t2 VALUES +(1), (1), (1), (1), (1), (1), (1), (1), +(2), (2), (2), (2), +(3), (3), +(4); +EXPLAIN SELECT b FROM t1, t2 WHERE b=c AND a=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 ref idx idx 4 const 7 Using index +EXPLAIN SELECT b FROM t1, t2 WHERE b=c AND a=4; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 ref idx idx 4 const 1 Using index +DROP TABLE t1, t2; +CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, a int); +INSERT INTO t1 VALUES (1,2), (2,NULL), (3,2); +CREATE TABLE t2 (b int, c INT, INDEX idx1(b)); +INSERT INTO t2 VALUES (2,1), (3,2); +CREATE TABLE t3 (d int, e int, INDEX idx1(d)); +INSERT INTO t3 VALUES (2,10), (2,20), (1,30), (2,40), (2,50); +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id +WHERE t1.id=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 const idx1 NULL NULL NULL 1 +1 SIMPLE t3 ref idx1 idx1 5 const 3 +SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id +WHERE t1.id=2; +id a b c d e +2 NULL NULL NULL 2 10 +2 NULL NULL NULL 2 20 +2 NULL NULL NULL 2 40 +2 NULL NULL NULL 2 50 +DROP TABLE t1,t2,t3; +create table t1 (c1 varchar(1), c2 int, c3 int, c4 int, c5 int, c6 int, +c7 int, c8 int, c9 int, fulltext key (`c1`)); +select distinct match (`c1`) against ('z') , c2, c3, c4,c5, c6,c7, c8 +from t1 where c9=1 order by c2, c2; +match (`c1`) against ('z') c2 c3 c4 c5 c6 c7 c8 +drop table t1; +CREATE TABLE t1 (pk varchar(10) PRIMARY KEY, fk varchar(16)); +CREATE TABLE t2 (pk varchar(16) PRIMARY KEY, fk varchar(10)); +INSERT INTO t1 VALUES +('d','dddd'), ('i','iii'), ('a','aa'), ('b','bb'), ('g','gg'), +('e','eee'), ('c','cccc'), ('h','hhh'), ('j','jjj'), ('f','fff'); +INSERT INTO t2 VALUES +('jjj', 'j'), ('cc','c'), ('ccc','c'), ('aaa', 'a'), ('jjjj','j'), +('hhh','h'), ('gg','g'), ('fff','f'), ('ee','e'), ('ffff','f'), +('bbb','b'), ('ff','f'), ('cccc','c'), ('dddd','d'), ('jj','j'), +('aaaa','a'), ('bb','b'), ('eeee','e'), ('aa','a'), ('hh','h'); +EXPLAIN SELECT t2.* +FROM t1 JOIN t2 ON t2.fk=t1.pk +WHERE t2.fk < 'c' AND t2.pk=t1.fk; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT t2.* +FROM t1 JOIN t2 ON t2.fk=t1.pk +WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT t2.* +FROM t1 JOIN t2 ON t2.fk=t1.pk +WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a)); +CREATE TABLE t2 (a int, b varchar(20) NOT NULL, +PRIMARY KEY (a), UNIQUE KEY (b)); +INSERT INTO t1 VALUES (1,'a'),(2,'b'),(3,'c'); +INSERT INTO t2 VALUES (1,'a'),(2,'b'),(3,'c'); +EXPLAIN SELECT t1.a FROM t1 LEFT JOIN t2 ON t2.b=t1.b WHERE t1.a=3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +DROP TABLE t1,t2; +CREATE TABLE t1(id int PRIMARY KEY, b int, e int); +CREATE TABLE t2(i int, a int, INDEX si(i), INDEX ai(a)); +CREATE TABLE t3(a int PRIMARY KEY, c char(4), INDEX ci(c)); +INSERT INTO t1 VALUES +(1,10,19), (2,20,22), (4,41,42), (9,93,95), (7, 77,79), +(6,63,67), (5,55,58), (3,38,39), (8,81,89); +INSERT INTO t2 VALUES +(21,210), (41,410), (82,820), (83,830), (84,840), +(65,650), (51,510), (37,370), (94,940), (76,760), +(22,220), (33,330), (40,400), (95,950), (38,380), +(67,670), (88,880), (57,570), (96,960), (97,970); +INSERT INTO t3 VALUES +(210,'bb'), (950,'ii'), (400,'ab'), (500,'ee'), (220,'gg'), +(440,'gg'), (310,'eg'), (380,'ee'), (840,'bb'), (830,'ff'), +(230,'aa'), (960,'ii'), (410,'aa'), (510,'ee'), (290,'bb'), +(450,'gg'), (320,'dd'), (390,'hh'), (850,'jj'), (860,'ff'); +EXPLAIN +SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3 +WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND +t3.a=t2.a AND t3.c IN ('bb','ee'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN +SELECT t3.a FROM t1,t2,t3 +WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND +t3.a=t2.a AND t3.c IN ('bb','ee') ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN +SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3 +WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND +t3.c IN ('bb','ee'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN +SELECT t3.a FROM t1,t2,t3 +WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND +t3.c IN ('bb','ee'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1,t2,t3; +CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int); +CREATE TABLE t2 ( f11 int PRIMARY KEY ); +INSERT INTO t1 VALUES (1,1,1,0,0,0,0),(2,1,1,3,8,1,0),(3,1,1,4,12,1,0); +INSERT INTO t2 VALUES (62); +SELECT * FROM t1 LEFT JOIN t2 ON f11 = t1.checked_out GROUP BY f1 ORDER BY f2, f3, f4, f5 LIMIT 0, 1; +f1 f2 f3 f4 f5 f6 checked_out f11 +1 1 1 0 0 0 0 NULL +DROP TABLE t1, t2; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1(a int); +INSERT into t1 values (1), (2), (3); +SELECT * FROM t1 LIMIT 2, -1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-1' at line 1 +DROP TABLE t1; +CREATE TABLE t1 ( +ID_with_null int NULL, +ID_better int NOT NULL, +INDEX idx1 (ID_with_null), +INDEX idx2 (ID_better) +); +INSERT INTO t1 VALUES (1,1), (2,1), (null,3), (null,3), (null,3), (null,3); +INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL; +SELECT COUNT(*) FROM t1 WHERE ID_with_null IS NULL; +COUNT(*) +128 +SELECT COUNT(*) FROM t1 WHERE ID_better=1; +COUNT(*) +2 +EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID_with_null IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +DROP INDEX idx1 ON t1; +CREATE UNIQUE INDEX idx1 ON t1(ID_with_null); +EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID_with_null IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +DROP TABLE t1; +CREATE TABLE t1 ( +ID1_with_null int NULL, +ID2_with_null int NULL, +ID_better int NOT NULL, +INDEX idx1 (ID1_with_null, ID2_with_null), +INDEX idx2 (ID_better) +); +INSERT INTO t1 VALUES (1,1,1), (2,2,1), (3,null,3), (null,3,3), (null,null,3), +(3,null,3), (null,3,3), (null,null,3), (3,null,3), (null,3,3), (null,null,3); +INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL; +INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL; +SELECT COUNT(*) FROM t1 WHERE ID1_with_null IS NULL AND ID2_with_null=3; +COUNT(*) +24 +SELECT COUNT(*) FROM t1 WHERE ID1_with_null=3 AND ID2_with_null IS NULL; +COUNT(*) +24 +SELECT COUNT(*) FROM t1 WHERE ID1_with_null IS NULL AND ID2_with_null IS NULL; +COUNT(*) +192 +SELECT COUNT(*) FROM t1 WHERE ID_better=1; +COUNT(*) +2 +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null=3 IS NULL ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +DROP INDEX idx1 ON t1; +CREATE UNIQUE INDEX idx1 ON t1(ID1_with_null,ID2_with_null); +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null IS NULL ; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +EXPLAIN SELECT * FROM t1 +WHERE ID_better=1 AND ID1_with_null IS NULL AND +(ID2_with_null=1 OR ID2_with_null=2); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref idx1,idx2 idx2 4 const 1 Using where +DROP TABLE t1; +CREATE TABLE t1 (a INT, ts TIMESTAMP, KEY ts(ts)); +INSERT INTO t1 VALUES (30,"2006-01-03 23:00:00"), (31,"2006-01-03 23:00:00"); +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +CREATE TABLE t2 (a INT, dt1 DATETIME, dt2 DATETIME, PRIMARY KEY (a)); +INSERT INTO t2 VALUES (30, "2006-01-01 00:00:00", "2999-12-31 00:00:00"); +INSERT INTO t2 SELECT a+1,dt1,dt2 FROM t2; +ANALYZE TABLE t2; +Table Op Msg_type Msg_text +test.t2 analyze status OK +EXPLAIN +SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30 +AND t1.ts BETWEEN t2.dt1 AND t2.dt2 +AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan +Warnings: +Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1 +SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30 +AND t1.ts BETWEEN t2.dt1 AND t2.dt2 +AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; +a ts a dt1 dt2 +30 2006-01-03 23:00:00 30 2006-01-01 00:00:00 2999-12-31 00:00:00 +Warnings: +Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1 +DROP TABLE t1,t2; +create table t1 (a bigint unsigned); +insert into t1 values +(if(1, 9223372036854775808, 1)), +(case when 1 then 9223372036854775808 else 1 end), +(coalesce(9223372036854775808, 1)); +select * from t1; +a +9223372036854775808 +9223372036854775808 +9223372036854775808 +drop table t1; +create table t1 select +if(1, 9223372036854775808, 1) i, +case when 1 then 9223372036854775808 else 1 end c, +coalesce(9223372036854775808, 1) co; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `i` decimal(19,0) NOT NULL DEFAULT '0', + `c` decimal(19,0) NOT NULL DEFAULT '0', + `co` decimal(19,0) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +select +if(1, cast(1111111111111111111 as unsigned), 1) i, +case when 1 then cast(1111111111111111111 as unsigned) else 1 end c, +coalesce(cast(1111111111111111111 as unsigned), 1) co; +i c co +1111111111111111111 1111111111111111111 1111111111111111111 +CREATE TABLE t1 (name varchar(255)); +CREATE TABLE t2 (name varchar(255), n int, KEY (name(3))); +INSERT INTO t1 VALUES ('ccc'), ('bb'), ('cc '), ('aa '), ('aa'); +INSERT INTO t2 VALUES ('bb',1), ('aa',2), ('cc ',3); +INSERT INTO t2 VALUES (concat('cc ', 0x06), 4); +INSERT INTO t2 VALUES ('cc',5), ('bb ',6), ('cc ',7); +SELECT * FROM t2; +name n +bb 1 +aa 2 +cc 3 +cc 4 +cc 5 +bb 6 +cc 7 +SELECT * FROM t2 ORDER BY name; +name n +aa 2 +bb 1 +bb 6 +cc 4 +cc 3 +cc 5 +cc 7 +SELECT name, LENGTH(name), n FROM t2 ORDER BY name; +name LENGTH(name) n +aa 2 2 +bb 2 1 +bb 3 6 +cc 4 4 +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name, LENGTH(name), n FROM t2 WHERE name='cc '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref name name 6 const 3 Using where +SELECT name, LENGTH(name), n FROM t2 WHERE name='cc '; +name LENGTH(name) n +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range name name 6 NULL 3 Using where +SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%'; +name LENGTH(name) n +cc 5 3 +cc 4 4 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%' ORDER BY name; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range name name 6 NULL 3 Using where; Using filesort +SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%' ORDER BY name; +name LENGTH(name) n +cc 4 4 +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where +SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; +name name n +ccc NULL NULL +bb bb 1 +bb bb 6 +cc cc 3 +cc cc 5 +cc cc 7 +aa aa 2 +aa aa 2 +DROP TABLE t1,t2; +CREATE TABLE t1 (name text); +CREATE TABLE t2 (name text, n int, KEY (name(3))); +INSERT INTO t1 VALUES ('ccc'), ('bb'), ('cc '), ('aa '), ('aa'); +INSERT INTO t2 VALUES ('bb',1), ('aa',2), ('cc ',3); +INSERT INTO t2 VALUES (concat('cc ', 0x06), 4); +INSERT INTO t2 VALUES ('cc',5), ('bb ',6), ('cc ',7); +SELECT * FROM t2; +name n +bb 1 +aa 2 +cc 3 +cc 4 +cc 5 +bb 6 +cc 7 +SELECT * FROM t2 ORDER BY name; +name n +aa 2 +bb 1 +bb 6 +cc 4 +cc 3 +cc 5 +cc 7 +SELECT name, LENGTH(name), n FROM t2 ORDER BY name; +name LENGTH(name) n +aa 2 2 +bb 2 1 +bb 3 6 +cc 4 4 +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name, LENGTH(name), n FROM t2 WHERE name='cc '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ref name name 6 const 3 Using where +SELECT name, LENGTH(name), n FROM t2 WHERE name='cc '; +name LENGTH(name) n +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range name name 6 NULL 3 Using where +SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%'; +name LENGTH(name) n +cc 5 3 +cc 4 4 +cc 2 5 +cc 3 7 +EXPLAIN SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%' ORDER BY name; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 range name name 6 NULL 3 Using where; Using filesort +SELECT name , LENGTH(name), n FROM t2 WHERE name LIKE 'cc%' ORDER BY name; +name LENGTH(name) n +cc 4 4 +cc 5 3 +cc 2 5 +cc 3 7 +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where +SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; +name name n +ccc NULL NULL +bb bb 1 +bb bb 6 +cc cc 3 +cc cc 5 +cc cc 7 +aa aa 2 +aa aa 2 +DROP TABLE t1,t2; +CREATE TABLE t1 ( +access_id int NOT NULL default '0', +name varchar(20) default NULL, +rank int NOT NULL default '0', +KEY idx (access_id) +); +CREATE TABLE t2 ( +faq_group_id int NOT NULL default '0', +faq_id int NOT NULL default '0', +access_id int default NULL, +UNIQUE KEY idx1 (faq_id), +KEY idx2 (faq_group_id,faq_id) +); +INSERT INTO t1 VALUES +(1,'Everyone',2),(2,'Help',3),(3,'Technical Support',1),(4,'Chat User',4); +INSERT INTO t2 VALUES +(261,265,1),(490,494,1); +SELECT t2.faq_id +FROM t1 INNER JOIN t2 IGNORE INDEX (idx1) +ON (t1.access_id = t2.access_id) +LEFT JOIN t2 t +ON (t.faq_group_id = t2.faq_group_id AND +find_in_set(t.access_id, '1,4') < find_in_set(t2.access_id, '1,4')) +WHERE +t2.access_id IN (1,4) AND t.access_id IS NULL AND t2.faq_id in (265); +faq_id +265 +SELECT t2.faq_id +FROM t1 INNER JOIN t2 +ON (t1.access_id = t2.access_id) +LEFT JOIN t2 t +ON (t.faq_group_id = t2.faq_group_id AND +find_in_set(t.access_id, '1,4') < find_in_set(t2.access_id, '1,4')) +WHERE +t2.access_id IN (1,4) AND t.access_id IS NULL AND t2.faq_id in (265); +faq_id +265 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT, KEY inx (b,a)); +INSERT INTO t1 VALUES (1,1), (1,2), (1,3), (1,4), (1,5), (1, 6), (1,7); +EXPLAIN SELECT COUNT(*) FROM t1 f1 INNER JOIN t1 f2 +ON ( f1.b=f2.b AND f1.a<f2.a ) +WHERE 1 AND f1.b NOT IN (100,2232,3343,51111); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE f1 index inx inx 10 NULL 7 Using where; Using index +1 SIMPLE f2 ref inx inx 5 test.f1.b 1 Using where; Using index +DROP TABLE t1; +CREATE TABLE t1 (c1 INT, c2 INT); +INSERT INTO t1 VALUES (1,11), (2,22), (2,22); +EXPLAIN SELECT c1 FROM t1 WHERE (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT COUNT(c2)))))))))))))))))))))))))))))))) > 0; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +31 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used +32 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used +EXPLAIN SELECT c1 FROM t1 WHERE (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT COUNT(c2))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) > 0; +ERROR HY000: Too high level of nesting for select +DROP TABLE t1; +CREATE TABLE t1 ( +c1 int(11) NOT NULL AUTO_INCREMENT, +c2 varchar(1000) DEFAULT NULL, +c3 bigint(20) DEFAULT NULL, +c4 bigint(20) DEFAULT NULL, +PRIMARY KEY (c1) +); +EXPLAIN EXTENDED +SELECT join_2.c1 +FROM +t1 AS join_0, +t1 AS join_1, +t1 AS join_2, +t1 AS join_3, +t1 AS join_4, +t1 AS join_5, +t1 AS join_6, +t1 AS join_7 +WHERE +join_0.c1=join_1.c1 AND +join_1.c1=join_2.c1 AND +join_2.c1=join_3.c1 AND +join_3.c1=join_4.c1 AND +join_4.c1=join_5.c1 AND +join_5.c1=join_6.c1 AND +join_6.c1=join_7.c1 +OR +join_0.c2 < '?' AND +join_1.c2 < '?' AND +join_2.c2 > '?' AND +join_2.c2 < '!' AND +join_3.c2 > '?' AND +join_4.c2 = '?' AND +join_5.c2 <> '?' AND +join_6.c2 <> '?' AND +join_7.c2 >= '?' AND +join_0.c1=join_1.c1 AND +join_1.c1=join_2.c1 AND +join_2.c1=join_3.c1 AND +join_3.c1=join_4.c1 AND +join_4.c1=join_5.c1 AND +join_5.c1=join_6.c1 AND +join_6.c1=join_7.c1 +GROUP BY +join_3.c1, +join_2.c1, +join_7.c1, +join_1.c1, +join_0.c1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select NULL AS `c1` from `test`.`t1` `join_0` join `test`.`t1` `join_1` join `test`.`t1` `join_2` join `test`.`t1` `join_3` join `test`.`t1` `join_4` join `test`.`t1` `join_5` join `test`.`t1` `join_6` join `test`.`t1` `join_7` where 0 group by NULL,NULL,NULL,NULL,NULL +SHOW WARNINGS; +Level Code Message +Note 1003 select NULL AS `c1` from `test`.`t1` `join_0` join `test`.`t1` `join_1` join `test`.`t1` `join_2` join `test`.`t1` `join_3` join `test`.`t1` `join_4` join `test`.`t1` `join_5` join `test`.`t1` `join_6` join `test`.`t1` `join_7` where 0 group by NULL,NULL,NULL,NULL,NULL +DROP TABLE t1; +SELECT 1 AS ` `; + +1 +Warnings: +Warning 1474 Name ' ' has become '' +SELECT 1 AS ` `; + +1 +Warnings: +Warning 1474 Name ' ' has become '' +SELECT 1 AS ` x`; +x +1 +Warnings: +Warning 1466 Leading spaces are removed from name ' x' +CREATE VIEW v1 AS SELECT 1 AS ``; +ERROR 42000: Incorrect column name '' +CREATE VIEW v1 AS SELECT 1 AS ` `; +ERROR 42000: Incorrect column name ' ' +CREATE VIEW v1 AS SELECT 1 AS ` `; +ERROR 42000: Incorrect column name ' ' +CREATE VIEW v1 AS SELECT (SELECT 1 AS ` `); +ERROR 42000: Incorrect column name ' ' +CREATE VIEW v1 AS SELECT 1 AS ` x`; +Warnings: +Warning 1466 Leading spaces are removed from name ' x' +SELECT `x` FROM v1; +x +1 +ALTER VIEW v1 AS SELECT 1 AS ` `; +ERROR 42000: Incorrect column name ' ' +DROP VIEW v1; +select str_to_date('2007-10-09','%Y-%m-%d') between '2007/10/01 00:00:00 GMT' + and '2007/10/20 00:00:00 GMT'; +str_to_date('2007-10-09','%Y-%m-%d') between '2007/10/01 00:00:00 GMT' + and '2007/10/20 00:00:00 GMT' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007/10/01 00:00:00 GMT' +Warning 1292 Truncated incorrect datetime value: '2007/10/20 00:00:00 GMT' +select str_to_date('2007-10-09','%Y-%m-%d') > '2007/10/01 00:00:00 GMT-6'; +str_to_date('2007-10-09','%Y-%m-%d') > '2007/10/01 00:00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect date value: '2007/10/01 00:00:00 GMT-6' +select str_to_date('2007-10-09','%Y-%m-%d') <= '2007/10/2000:00:00 GMT-6'; +str_to_date('2007-10-09','%Y-%m-%d') <= '2007/10/2000:00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect date value: '2007/10/2000:00:00 GMT-6' +select str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-1 00:00:00 GMT-6'; +str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-1 00:00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect date value: '2007-10-1 00:00:00 GMT-6' +select str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-01 x00:00:00 GMT-6'; +str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-01 x00:00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect date value: '2007-10-01 x00:00:00 GMT-6' +select str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 00:00:00 GMT-6'; +str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 00:00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 00:00:00 GMT-6' +select str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 00:x00:00 GMT-6'; +str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 00:x00:00 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 00:x00:00 GMT-6' +select str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 x12:34:56 GMT-6'; +str_to_date('2007-10-01','%Y-%m-%d %H:%i:%s') = '2007-10-01 x12:34:56 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 x12:34:56 GMT-6' +select str_to_date('2007-10-01 12:34:00','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34x:56 GMT-6'; +str_to_date('2007-10-01 12:34:00','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34x:56 GMT-6' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 12:34x:56 GMT-6' +select str_to_date('2007-10-01 12:34:56','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34x:56 GMT-6'; +str_to_date('2007-10-01 12:34:56','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34x:56 GMT-6' +0 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 12:34x:56 GMT-6' +select str_to_date('2007-10-01 12:34:56','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34:56'; +str_to_date('2007-10-01 12:34:56','%Y-%m-%d %H:%i:%s') = '2007-10-01 12:34:56' +1 +select str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-01 12:00:00'; +str_to_date('2007-10-01','%Y-%m-%d') = '2007-10-01 12:00:00' +0 +select str_to_date('2007-10-01 12','%Y-%m-%d %H') = '2007-10-01 12:00:00'; +str_to_date('2007-10-01 12','%Y-%m-%d %H') = '2007-10-01 12:00:00' +1 +select str_to_date('2007-10-01 12:34','%Y-%m-%d %H') = '2007-10-01 12:00:00'; +str_to_date('2007-10-01 12:34','%Y-%m-%d %H') = '2007-10-01 12:00:00' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-01 12:34' +select str_to_date('2007-02-30 12:34','%Y-%m-%d %H:%i') = '2007-02-30 12:34'; +str_to_date('2007-02-30 12:34','%Y-%m-%d %H:%i') = '2007-02-30 12:34' +1 +select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34'; +str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34' +1 +select str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01 00:00:00' + and '2007/10/20 00:00:00'; +str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01 00:00:00' + and '2007/10/20 00:00:00' +1 +set SQL_MODE=TRADITIONAL; +select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34'; +str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34' +0 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34' +select str_to_date('2007-10-01 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34'; +str_to_date('2007-10-01 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34' +0 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34' +select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-01 12:34'; +str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-01 12:34' +0 +Warnings: +Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34:00' +select str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01' + and '2007/10/20'; +str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01' + and '2007/10/20' +0 +Warnings: +Warning 1292 Incorrect datetime value: '2007-10-00' for column '2007/09/01' at row 1 +Warning 1292 Incorrect datetime value: '2007-10-00' for column '2007/10/20' at row 1 +set SQL_MODE=DEFAULT; +select str_to_date('2007-10-00','%Y-%m-%d') between '' and '2007/10/20'; +str_to_date('2007-10-00','%Y-%m-%d') between '' and '2007/10/20' +1 +Warnings: +Warning 1292 Truncated incorrect datetime value: '' +select str_to_date('','%Y-%m-%d') between '2007/10/01' and '2007/10/20'; +str_to_date('','%Y-%m-%d') between '2007/10/01' and '2007/10/20' +0 +select str_to_date('','%Y-%m-%d %H:%i') = '2007-10-01 12:34'; +str_to_date('','%Y-%m-%d %H:%i') = '2007-10-01 12:34' +0 +select str_to_date(NULL,'%Y-%m-%d %H:%i') = '2007-10-01 12:34'; +str_to_date(NULL,'%Y-%m-%d %H:%i') = '2007-10-01 12:34' +NULL +select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = ''; +str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '' +0 +Warnings: +Warning 1292 Truncated incorrect datetime value: '' +select str_to_date('1','%Y-%m-%d') = '1'; +str_to_date('1','%Y-%m-%d') = '1' +0 +Warnings: +Warning 1292 Truncated incorrect date value: '1' +select str_to_date('1','%Y-%m-%d') = '1'; +str_to_date('1','%Y-%m-%d') = '1' +0 +Warnings: +Warning 1292 Truncated incorrect date value: '1' +select str_to_date('','%Y-%m-%d') = ''; +str_to_date('','%Y-%m-%d') = '' +0 +Warnings: +Warning 1292 Truncated incorrect date value: '' +select str_to_date('1000-01-01','%Y-%m-%d') between '0000-00-00' and NULL; +str_to_date('1000-01-01','%Y-%m-%d') between '0000-00-00' and NULL +0 +select str_to_date('1000-01-01','%Y-%m-%d') between NULL and '2000-00-00'; +str_to_date('1000-01-01','%Y-%m-%d') between NULL and '2000-00-00' +0 +select str_to_date('1000-01-01','%Y-%m-%d') between NULL and NULL; +str_to_date('1000-01-01','%Y-%m-%d') between NULL and NULL +0 +CREATE TABLE t1 (c11 INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY); +CREATE TABLE t2 (c21 INT UNSIGNED NOT NULL, +c22 INT DEFAULT NULL, +KEY(c21, c22)); +CREATE TABLE t3 (c31 INT UNSIGNED NOT NULL DEFAULT 0, +c32 INT DEFAULT NULL, +c33 INT NOT NULL, +c34 INT UNSIGNED DEFAULT 0, +KEY (c33, c34, c32)); +INSERT INTO t1 values (),(),(),(),(); +INSERT INTO t2 SELECT a.c11, b.c11 FROM t1 a, t1 b; +INSERT INTO t3 VALUES (1, 1, 1, 0), +(2, 2, 0, 0), +(3, 3, 1, 0), +(4, 4, 0, 0), +(5, 5, 1, 0); +SELECT c32 FROM t1, t2, t3 WHERE t1.c11 IN (1, 3, 5) AND +t3.c31 = t1.c11 AND t2.c21 = t1.c11 AND +t3.c33 = 1 AND t2.c22 in (1, 3) +ORDER BY c32; +c32 +1 +1 +3 +3 +5 +5 +SELECT c32 FROM t1, t2, t3 WHERE t1.c11 IN (1, 3, 5) AND +t3.c31 = t1.c11 AND t2.c21 = t1.c11 AND +t3.c33 = 1 AND t2.c22 in (1, 3) +ORDER BY c32 DESC; +c32 +5 +5 +3 +3 +1 +1 +DROP TABLE t1, t2, t3; + +# +# Bug#30736: Row Size Too Large Error Creating a Table and +# Inserting Data. +# +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; + +CREATE TABLE t1( +c1 DECIMAL(10, 2), +c2 FLOAT); + +INSERT INTO t1 VALUES (0, 1), (2, 3), (4, 5); + +CREATE TABLE t2( +c3 DECIMAL(10, 2)) +SELECT +c1 * c2 AS c3 +FROM t1; + +SELECT * FROM t1; +c1 c2 +0.00 1 +2.00 3 +4.00 5 + +SELECT * FROM t2; +c3 +0.00 +6.00 +20.00 + +DROP TABLE t1; +DROP TABLE t2; + +CREATE TABLE t1 (c1 BIGINT NOT NULL); +INSERT INTO t1 (c1) VALUES (1); +SELECT * FROM t1 WHERE c1 > NULL + 1; +c1 +DROP TABLE t1; + +CREATE TABLE t1 (a VARCHAR(10) NOT NULL PRIMARY KEY); +INSERT INTO t1 (a) VALUES ('foo0'), ('bar0'), ('baz0'); +SELECT * FROM t1 WHERE a IN (CONCAT('foo', 0), 'bar'); +a +foo0 +DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT, c INT, KEY(a)); +INSERT INTO t1 VALUES (1, 1), (2, 2); +INSERT INTO t2 VALUES (1, 1), (1, 2), (1, 3), (1, 4), (1, 5), +(2, 1), (2, 2), (2, 3), (2, 4), (2, 5), +(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), +(4, 1), (4, 2), (4, 3), (4, 4), (4, 5); +FLUSH STATUS; +SELECT DISTINCT b FROM t1 LEFT JOIN t2 USING(a) WHERE c <= 3; +b +1 +2 +SHOW STATUS LIKE 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 2 +Handler_read_next 10 +Handler_read_prev 0 +Handler_read_rnd 10 +Handler_read_rnd_next 7 +DROP TABLE t1, t2; +CREATE TABLE t1 (f1 bigint(20) NOT NULL default '0', +f2 int(11) NOT NULL default '0', +f3 bigint(20) NOT NULL default '0', +f4 varchar(255) NOT NULL default '', +PRIMARY KEY (f1), +KEY key1 (f4), +KEY key2 (f2)); +CREATE TABLE t2 (f1 int(11) NOT NULL default '0', +f2 enum('A1','A2','A3') NOT NULL default 'A1', +f3 int(11) NOT NULL default '0', +PRIMARY KEY (f1), +KEY key1 (f3)); +CREATE TABLE t3 (f1 bigint(20) NOT NULL default '0', +f2 datetime NOT NULL default '1980-01-01 00:00:00', +PRIMARY KEY (f1)); +insert into t1 values (1, 1, 1, 'abc'); +insert into t1 values (2, 1, 2, 'def'); +insert into t1 values (3, 1, 2, 'def'); +insert into t2 values (1, 'A1', 1); +insert into t3 values (1, '1980-01-01'); +SELECT a.f3, cr.f4, count(*) count +FROM t2 a +STRAIGHT_JOIN t1 cr ON cr.f2 = a.f1 +LEFT JOIN +(t1 cr2 +JOIN t3 ae2 ON cr2.f3 = ae2.f1 +) ON a.f1 = cr2.f2 AND ae2.f2 < now() - INTERVAL 7 DAY AND +cr.f4 = cr2.f4 +GROUP BY a.f3, cr.f4; +f3 f4 count +1 abc 1 +1 def 2 +drop table t1, t2, t3; +CREATE TABLE t1 (a INT KEY, b INT); +INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4); +EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 +EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 +DROP TABLE t1; +# +# Bug#47019: Assertion failed: 0, file .\rt_mbr.c, line 138 when +# forcing a spatial index +# +CREATE TABLE t1(a LINESTRING NOT NULL, SPATIAL KEY(a)); +INSERT INTO t1 VALUES +(GEOMFROMTEXT('LINESTRING(-1 -1, 1 -1, -1 -1, -1 1, 1 1)')), +(GEOMFROMTEXT('LINESTRING(-1 -1, 1 -1, -1 -1, -1 1, 1 1)')); +EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) +SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; +1 +1 +1 +1 +1 +EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) +SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); +1 +1 +1 +1 +1 +DROP TABLE t1; +# +# Bug #48291 : crash with row() operator,select into @var, and +# subquery returning multiple rows +# +CREATE TABLE t1(a INT); +INSERT INTO t1 VALUES (2),(3); +# Should not crash +SELECT 1 FROM t1 WHERE a <> 1 AND NOT +ROW(a,a) <=> ROW((SELECT 1 FROM t1 WHERE 1=2),(SELECT 1 FROM t1)) +INTO @var0; +ERROR 21000: Subquery returns more than 1 row +DROP TABLE t1; +# +# Bug #48458: simple query tries to allocate enormous amount of +# memory +# +CREATE TABLE t1(a INT NOT NULL, b YEAR); +INSERT INTO t1 VALUES (); +Warnings: +Warning 1364 Field 'a' doesn't have a default value +CREATE TABLE t2(c INT); +# Should not err out because of out-of-memory +SELECT 1 FROM t2 JOIN t1 ON 1=1 +WHERE a != '1' AND NOT a >= b OR NOT ROW(b,a )<> ROW(a,a); +1 +DROP TABLE t1,t2; +# +# Bug #49199: Optimizer handles incorrectly: +# field='const1' AND field='const2' in some cases + +CREATE TABLE t1(a DATETIME NOT NULL); +INSERT INTO t1 VALUES('2001-01-01'); +SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +a +2001-01-01 00:00:00 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a` from `test`.`t1` where 1 +DROP TABLE t1; +CREATE TABLE t1(a DATE NOT NULL); +INSERT INTO t1 VALUES('2001-01-01'); +SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +a +2001-01-01 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01' AS `a` from `test`.`t1` where 1 +DROP TABLE t1; +CREATE TABLE t1(a TIMESTAMP NOT NULL); +INSERT INTO t1 VALUES('2001-01-01'); +SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +a +2001-01-01 00:00:00 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01' AND a='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a` from `test`.`t1` where 1 +DROP TABLE t1; +CREATE TABLE t1(a DATETIME NOT NULL, b DATE NOT NULL); +INSERT INTO t1 VALUES('2001-01-01', '2001-01-01'); +SELECT * FROM t1 WHERE a='2001-01-01' AND a=b AND b='2001-01-01 00:00:00'; +a b +2001-01-01 00:00:00 2001-01-01 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01' AND a=b AND b='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a`,'2001-01-01' AS `b` from `test`.`t1` where 1 +DROP TABLE t1; +CREATE TABLE t1(a DATETIME NOT NULL, b VARCHAR(20) NOT NULL); +INSERT INTO t1 VALUES('2001-01-01', '2001-01-01'); +SELECT * FROM t1 WHERE a='2001-01-01' AND a=b AND b='2001-01-01 00:00:00'; +a b +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01' AND a=b AND b='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a`,'2001-01-01' AS `b` from `test`.`t1` where 0 +SELECT * FROM t1 WHERE a='2001-01-01 00:00:00' AND a=b AND b='2001-01-01'; +a b +2001-01-01 00:00:00 2001-01-01 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a='2001-01-01 00:00:00' AND a=b AND b='2001-01-01'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a`,'2001-01-01' AS `b` from `test`.`t1` where 1 +DROP TABLE t1; +CREATE TABLE t1(a DATETIME NOT NULL, b DATE NOT NULL); +INSERT INTO t1 VALUES('2001-01-01', '2001-01-01'); +SELECT x.a, y.a, z.a FROM t1 x +JOIN t1 y ON x.a=y.a +JOIN t1 z ON y.a=z.a +WHERE x.a='2001-01-01' AND z.a='2001-01-01 00:00:00'; +a a a +2001-01-01 00:00:00 2001-01-01 00:00:00 2001-01-01 00:00:00 +EXPLAIN EXTENDED SELECT x.a, y.a, z.a FROM t1 x +JOIN t1 y ON x.a=y.a +JOIN t1 z ON y.a=z.a +WHERE x.a='2001-01-01' AND z.a='2001-01-01 00:00:00'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE x system NULL NULL NULL NULL 1 100.00 +1 SIMPLE y system NULL NULL NULL NULL 1 100.00 +1 SIMPLE z system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '2001-01-01 00:00:00' AS `a`,'2001-01-01 00:00:00' AS `a`,'2001-01-01 00:00:00' AS `a` from `test`.`t1` `x` join `test`.`t1` `y` join `test`.`t1` `z` where 1 +DROP TABLE t1; +# +# Bug #49897: crash in ptr_compare when char(0) NOT NULL +# column is used for ORDER BY +# +SET @old_sort_buffer_size= @@session.sort_buffer_size; +SET @@sort_buffer_size= 40000; +CREATE TABLE t1(a CHAR(0) NOT NULL); +INSERT INTO t1 VALUES (0), (0), (0); +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +EXPLAIN SELECT a FROM t1 ORDER BY a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 24492 +SELECT a FROM t1 ORDER BY a; +DROP TABLE t1; +CREATE TABLE t1(a CHAR(0) NOT NULL, b CHAR(0) NOT NULL, c int); +INSERT INTO t1 VALUES (0, 0, 0), (0, 0, 2), (0, 0, 1); +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +EXPLAIN SELECT a FROM t1 ORDER BY a LIMIT 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 24492 +SELECT a FROM t1 ORDER BY a LIMIT 5; +a + + + + + +EXPLAIN SELECT * FROM t1 ORDER BY a, b LIMIT 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 24492 +SELECT * FROM t1 ORDER BY a, b LIMIT 5; +a b c + 0 + 2 + 1 + 0 + 2 +EXPLAIN SELECT * FROM t1 ORDER BY a, b, c LIMIT 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 24492 Using filesort +SELECT * FROM t1 ORDER BY a, b, c LIMIT 5; +a b c + 0 + 0 + 0 + 0 + 0 +EXPLAIN SELECT * FROM t1 ORDER BY c, a LIMIT 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 24492 Using filesort +SELECT * FROM t1 ORDER BY c, a LIMIT 5; +a b c + 0 + 0 + 0 + 0 + 0 +SET @@sort_buffer_size= @old_sort_buffer_size; +DROP TABLE t1; +End of 5.0 tests +create table t1(a INT, KEY (a)); +INSERT INTO t1 VALUES (1),(2),(3),(4),(5); +SELECT a FROM t1 ORDER BY a LIMIT 2; +a +1 +2 +SELECT a FROM t1 ORDER BY a LIMIT 2,4294967296; +a +3 +4 +5 +SELECT a FROM t1 ORDER BY a LIMIT 2,4294967297; +a +3 +4 +5 +DROP TABLE t1; +CREATE TABLE A (date_key date); +CREATE TABLE C ( +pk int, +int_nokey int, +int_key int, +date_key date NOT NULL, +date_nokey date, +varchar_key varchar(1) +); +INSERT INTO C VALUES +(1,1,1,'0000-00-00',NULL,NULL), +(1,1,1,'0000-00-00',NULL,NULL); +SELECT 1 FROM C WHERE pk > ANY (SELECT 1 FROM C); +1 +SELECT COUNT(DISTINCT 1) FROM C +WHERE date_key = (SELECT 1 FROM A WHERE C.date_key IS NULL) GROUP BY pk; +COUNT(DISTINCT 1) +SELECT date_nokey FROM C +WHERE int_key IN (SELECT 1 FROM A) +HAVING date_nokey = '10:41:7' +ORDER BY date_key; +date_nokey +Warnings: +Warning 1292 Incorrect date value: '10:41:7' for column 'date_nokey' at row 1 +DROP TABLE A,C; +CREATE TABLE t1 (a INT NOT NULL, b INT); +INSERT INTO t1 VALUES (1, 1); +EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a=a AND a=a) OR b > 2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select '1' AS `a`,'1' AS `b` from `test`.`t1` where 1 +SELECT * FROM t1 WHERE (a=a AND a=a) OR b > 2; +a b +1 1 +DROP TABLE t1; +CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL, c INT NOT NULL); +EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a=a AND b=b AND c=c) OR b > 20; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select NULL AS `a`,NULL AS `b`,NULL AS `c` from `test`.`t1` where 1 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a=a AND a=a AND b=b) OR b > 20; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select NULL AS `a`,NULL AS `b`,NULL AS `c` from `test`.`t1` where 1 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a=a AND b=b AND a=a) OR b > 20; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select NULL AS `a`,NULL AS `b`,NULL AS `c` from `test`.`t1` where 1 +DROP TABLE t1; +# +# Bug#45266: Uninitialized variable lead to an empty result. +# +drop table if exists A,AA,B,BB; +CREATE TABLE `A` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`date_key` date NOT NULL, +`date_nokey` date NOT NULL, +`datetime_key` datetime NOT NULL, +`int_nokey` int(11) NOT NULL, +`time_key` time NOT NULL, +`time_nokey` time NOT NULL, +PRIMARY KEY (`pk`), +KEY `date_key` (`date_key`), +KEY `time_key` (`time_key`), +KEY `datetime_key` (`datetime_key`) +); +CREATE TABLE `AA` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_nokey` int(11) NOT NULL, +`time_key` time NOT NULL, +KEY `time_key` (`time_key`), +PRIMARY KEY (`pk`) +); +CREATE TABLE `B` ( +`date_nokey` date NOT NULL, +`date_key` date NOT NULL, +`time_key` time NOT NULL, +`datetime_nokey` datetime NOT NULL, +`varchar_key` varchar(1) NOT NULL, +KEY `date_key` (`date_key`), +KEY `time_key` (`time_key`), +KEY `varchar_key` (`varchar_key`) +); +INSERT INTO `B` VALUES ('2003-07-28','2003-07-28','15:13:38','0000-00-00 00:00:00','f'),('0000-00-00','0000-00-00','00:05:48','2004-07-02 14:34:13','x'); +CREATE TABLE `BB` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_nokey` int(11) NOT NULL, +`date_key` date NOT NULL, +`varchar_nokey` varchar(1) NOT NULL, +`date_nokey` date NOT NULL, +PRIMARY KEY (`pk`), +KEY `date_key` (`date_key`) +); +INSERT INTO `BB` VALUES (10,8,'0000-00-00','i','0000-00-00'),(11,0,'2005-08-18','','2005-08-18'); +SELECT table1 . `pk` AS field1 +FROM +(BB AS table1 INNER JOIN +(AA AS table2 STRAIGHT_JOIN A AS table3 +ON ( table3 . `date_key` = table2 . `pk` )) +ON ( table3 . `datetime_key` = table2 . `int_nokey` )) +WHERE ( table3 . `date_key` <= 4 AND table2 . `pk` = table1 . `varchar_nokey`) +GROUP BY field1 ; +field1 +SELECT table3 .`date_key` field1 +FROM +B table1 LEFT JOIN B table3 JOIN +(BB table6 JOIN A table7 ON table6 .`varchar_nokey`) +ON table6 .`int_nokey` ON table6 .`date_key` + WHERE NOT ( table1 .`varchar_key` AND table7 .`pk`) GROUP BY field1; +field1 +NULL +SELECT table4 . `time_nokey` AS field1 FROM +(AA AS table1 CROSS JOIN +(AA AS table2 STRAIGHT_JOIN +(B AS table3 STRAIGHT_JOIN A AS table4 +ON ( table4 . `date_key` = table3 . `time_key` )) +ON ( table4 . `pk` = table3 . `date_nokey` )) +ON ( table4 . `time_key` = table3 . `datetime_nokey` )) +WHERE ( table4 . `time_key` < table1 . `time_key` AND +table1 . `int_nokey` != 'f') +GROUP BY field1 ORDER BY field1 , field1; +field1 +SELECT table1 .`time_key` field2 FROM B table1 LEFT JOIN BB JOIN A table5 ON table5 .`date_nokey` ON table5 .`int_nokey` GROUP BY field2; +field2 +00:05:48 +15:13:38 +drop table A,AA,B,BB; +#end of test for bug#45266 +# +# BUG#48052: Valgrind warning - uninitialized value in init_read_record() +# +CREATE TABLE t1 ( +pk int(11) NOT NULL, +i int(11) DEFAULT NULL, +v varchar(1) DEFAULT NULL, +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (2,7,'m'); +INSERT INTO t1 VALUES (3,9,'m'); +SELECT v +FROM t1 +WHERE NOT pk > 0 +HAVING v <= 't' +ORDER BY pk; +v +DROP TABLE t1; +# +# Bug#49489 Uninitialized cache led to a wrong result. +# +CREATE TABLE t1(c1 DOUBLE(5,4)); +INSERT INTO t1 VALUES (9.1234); +SELECT * FROM t1 WHERE c1 < 9.12345; +c1 +9.1234 +DROP TABLE t1; +# End of test for bug#49489. +# +# Bug #49517: Inconsistent behavior while using +# NULLable BIGINT and INT columns in comparison +# +CREATE TABLE t1(a BIGINT UNSIGNED NOT NULL, b BIGINT NULL, c INT NULL); +INSERT INTO t1 VALUES(105, NULL, NULL); +SELECT * FROM t1 WHERE b < 102; +a b c +SELECT * FROM t1 WHERE c < 102; +a b c +SELECT * FROM t1 WHERE 102 < b; +a b c +SELECT * FROM t1 WHERE 102 < c; +a b c +DROP TABLE t1; +# +# Bug #54459: Assertion failed: param.sort_length, +# file .\filesort.cc, line 149 (part II) +# +CREATE TABLE t1(a ENUM('') NOT NULL); +INSERT INTO t1 VALUES (), (), (); +EXPLAIN SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci; +1 +1 +1 +1 +DROP TABLE t1; +# +# Bug #702310: usage of 2 join buffers after ref access to an empty table +# +CREATE TABLE t1 (f1 int) ; +INSERT INTO t1 VALUES (9); +CREATE TABLE t2 (f1 int); +INSERT INTO t2 VALUES (3),(7),(18); +INSERT INTO t2 VALUES (3),(7),(18); +INSERT INTO t2 VALUES (3),(7),(18); +INSERT INTO t2 VALUES (3),(7),(18); +CREATE TABLE t3 (f1 int); +INSERT INTO t3 VALUES (17); +CREATE TABLE t4 (f1 int PRIMARY KEY, f2 varchar(1024)) ; +CREATE TABLE t5 (f1 int) ; +INSERT INTO t5 VALUES (20),(5); +CREATE TABLE t6(f1 int); +INSERT INTO t6 VALUES (9),(7); +SET SESSION join_buffer_size = 2048; +EXPLAIN +SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 12 +1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) +SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; +f1 f1 f1 f1 f2 f1 f1 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 5 7 +SET SESSION join_buffer_size = DEFAULT; +DROP TABLE t1,t2,t3,t4,t5,t6; +# +# Bug #698882: best equality substitution not applied to ref +# +CREATE TABLE t1 (a1 int NOT NULL, b1 char(10), INDEX idx (a1)); +CREATE TABLE t2 (a2 int NOT NULL, b2 char(10), INDEX idx (a2)); +CREATE TABLE t3 (a3 int NOT NULL, b3 char(10), INDEX idx (a3)); +INSERT INTO t1 VALUES (2,'xx'), (1,'xxx'), (11,'xxxxxxx'); +INSERT INTO t2 VALUES +(7,'yyyy'), (2,'y'), (3,'yyy'), (1,'yy'), (1,'yyyyy'), +(3,'yy'), (1,'y'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'), +(7,'yyyy'), (2,'yy'), (3,'yyy'), (1,'yyyyyyyy'), (1,'yyyyy'), +(3,'yy'), (1,'yyy'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'); +INSERT INTO t3 VALUES +(9,'zzzzzzz'), (2,'zzzzz'), (1,'z'), (9,'zz'), (1,'zz'), (5,'zzzzzzz'), +(4,'zz'), (3,'z'), (5,'zzzzzz'), (3,'zz'), (4,'zzzz'), (3,'z'), +(9,'zzzzzzzz'), (2,'zz'), (1,'zz'), (9,'zzz'), (1,'zzz'), (5,'zzzzzzzz'), +(4,'zzz'), (3,'zz'), (5,'zzzzzzz'), (3,'zzz'), (4,'zzzzz'), (3,'zz'), +(9,'zzzzzz'), (2,'zzzz'), (1,'zzz'), (9,'z'), (1,'z'), (5,'zzzzzz'), +(4,'z'), (3,'zzz'), (5,'zzzzz'), (3,'z'), (4,'zzz'), (3,'zzzz'), +(9,'zzzzz'), (2,'zzz'), (1,'zzzz'), (9,'zzz'), (1,'zzzz'), (5,'zzzzz'), +(4,'zzz'), (3,'zzzz'), (5,'zzzz'), (3,'zzz'), (4,'zz'), (3,'zzzzz'); +SET SESSION optimizer_switch='index_condition_pushdown=off'; +EXPLAIN SELECT * from t1,t2,t3 WHERE t3.a3=t1.a1 AND t2.a2=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t2.a2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT * from t1,t2,t3 +WHERE t3.a3=t1.a1 AND t2.a2=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t2.a2 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SET SESSION optimizer_switch=DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #707555: crash with equality substitution in ref +# +CREATE TABLE t1 (f11 int, f12 int, PRIMARY KEY (f11), KEY (f12)) ; +INSERT INTO t1 VALUES (1,NULL), (8,NULL); +CREATE TABLE t2 (f21 int, f22 int, f23 int, KEY (f22)) ; +INSERT INTO t2 VALUES (1,NULL,3), (2,7,8); +CREATE TABLE t3 (f31 int, f32 int(11), PRIMARY KEY (f31), KEY (f32)) ; +INSERT INTO t3 VALUES (1,494862336); +CREATE TABLE t4 (f41 int, f42 int, PRIMARY KEY (f41), KEY (f42)) ; +INSERT INTO t4 VALUES (1,NULL), (8,NULL); +CREATE TABLE t5 (f51 int, PRIMARY KEY (f51)) ; +INSERT IGNORE INTO t5 VALUES (100); +CREATE TABLE t6 (f61 int, f62 int, KEY (f61)) ; +INSERT INTO t6 VALUES (NULL,1), (3,10); +CREATE TABLE t7 (f71 int, f72 int, KEY (f72)) ; +INSERT INTO t7 VALUES (1,NULL), (2,7); +EXPLAIN +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 system PRIMARY,f32 NULL NULL NULL 1 +1 SIMPLE t5 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ref f22 f22 5 const 1 +1 SIMPLE t6 ref f61 f61 5 const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t4 ref f42 f42 5 const 1 Using index +1 SIMPLE t7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +f23 +DROP TABLE t1,t2,t3,t4,t5,t6,t7; +End of 5.1 tests +# +# BUG#776274: substitution of a single row table +# +CREATE TABLE t1 (a int NOT NULL , b int); +INSERT INTO t1 VALUES (2,2); +SELECT * FROM t1 WHERE a = b; +a b +2 2 +EXPLAIN +SELECT * FROM t1 WHERE a = b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +DROP TABLE t1; +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; diff --git a/mysql-test/r/select_pkeycache.result b/mysql-test/r/select_pkeycache.result index f8df72c6709..f9d6c80018b 100644 --- a/mysql-test/r/select_pkeycache.result +++ b/mysql-test/r/select_pkeycache.result @@ -185,37 +185,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1391,15 +1391,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1415,15 +1415,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1431,7 +1431,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 @@ -2362,16 +2362,16 @@ insert into t1 values (1,2), (2,2), (3,2), (4,2); insert into t2 values (1,3), (2,3), (3,4), (4,4); explain select * from t1 left join t2 on a=c where d in (4); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 Using where -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) select * from t1 left join t2 on a=c where d in (4); a b c d 3 2 3 4 4 2 4 4 explain select * from t1 left join t2 on a=c where d = 4; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 Using where -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer +1 SIMPLE t2 ref c,d d 5 const 2 +1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) select * from t1 left join t2 on a=c where d = 4; a b c d 3 2 3 4 @@ -2397,11 +2397,11 @@ INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five'); EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref a a 23 test.t1.a 2 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref a a 23 test.t1.a 2 +1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where DROP TABLE t1, t2; CREATE TABLE t1 ( city char(30) ); INSERT INTO t1 VALUES ('London'); @@ -2716,8 +2716,8 @@ explain select straight_join DISTINCT t2.a,t2.b, t1.c from t1, t3, t2 where (t1.c=t2.a or (t1.c=t3.a and t2.a=t3.b)) and t1.b=556476786 and t2.b like '%%' order by t2.b limit 0,1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref b,c b 5 const 1 Using where; Using temporary; Using filesort -1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index; Using join buffer +1 SIMPLE t1 ref b,c b 5 const 1 Using temporary; Using filesort +1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index; Using join buffer (flat, BNL join) 1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1) DROP TABLE t1,t2,t3; CREATE TABLE t1 (a int, INDEX idx(a)); @@ -2738,7 +2738,7 @@ ALTER TABLE t1 ENABLE KEYS; EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index b b 5 NULL 2 Using index -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; a b a b 1 NULL 1 1 @@ -2748,7 +2748,7 @@ a b a b EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 index b b 5 NULL 2 Using index -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL; a b a b 1 NULL 1 1 @@ -2910,11 +2910,11 @@ a EXPLAIN SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 -1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) DROP TABLE t1,t2; select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0; x'10' + 0 X'10' + 0 b'10' + 0 B'10' + 0 @@ -3417,7 +3417,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan DROP TABLE t1,t2; CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL); INSERT t1 SET i = 0; @@ -3453,7 +3453,7 @@ In next EXPLAIN, B.rows must be exactly 10: explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5 and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using where +1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10 drop table t1, t2; CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b)); @@ -3467,13 +3467,13 @@ INSERT INTO t2 VALUES EXPLAIN SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using where -1 SIMPLE t2 ref c c 5 test.t1.a 2 Using where +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 EXPLAIN SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using where -1 SIMPLE t2 ref c c 5 test.t1.a 2 Using where +1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan +1 SIMPLE t2 ref c c 5 test.t1.a 2 DROP TABLE t1, t2; create table t1 ( a int unsigned not null auto_increment primary key, @@ -3533,7 +3533,7 @@ WHERE t1.id=2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 const idx1 NULL NULL NULL 1 -1 SIMPLE t3 ref idx1 idx1 5 const 3 Using where +1 SIMPLE t3 ref idx1 idx1 5 const 3 SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id WHERE t1.id=2; id a b c d e @@ -3562,19 +3562,19 @@ EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk < 'c' AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where EXPLAIN SELECT t2.* FROM t1 JOIN t2 ON t2.fk=t1.pk WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where DROP TABLE t1,t2; CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a)); @@ -3608,7 +3608,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si si 5 NULL 4 Using where +1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2,t3 @@ -3616,7 +3616,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND t3.a=t2.a AND t3.c IN ('bb','ee') ; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si,ai si 5 NULL 4 Using where +1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3 @@ -3624,7 +3624,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si si 5 NULL 2 Using where +1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where EXPLAIN SELECT t3.a FROM t1,t2,t3 @@ -3632,7 +3632,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t2 range si,ai si 5 NULL 2 Using where +1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan 1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where DROP TABLE t1,t2,t3; CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int); @@ -3752,7 +3752,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2 AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t1 range ts ts 4 NULL 1 Using where +1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan Warnings: Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1 SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30 @@ -3854,7 +3854,7 @@ cc 3 7 EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref name name 6 test.t1.name 2 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; name name n ccc NULL NULL @@ -3928,7 +3928,7 @@ cc 3 7 EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 -1 SIMPLE t2 ref name name 6 test.t1.name 2 +1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name; name name n ccc NULL NULL @@ -4376,14 +4376,14 @@ CREATE TABLE t1 (a INT KEY, b INT); INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4); EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan Warnings: Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t1`.`b`) and (`test`.`t1`.`a` > 1)) limit 2 +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2 DROP TABLE t1; # # Bug#47019: Assertion failed: 0, file .\rt_mbr.c, line 138 when @@ -4396,7 +4396,7 @@ INSERT INTO t1 VALUES EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL a NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; 1 1 @@ -4406,7 +4406,7 @@ SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2; EXPLAIN SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL a NULL NULL NULL 2 +1 SIMPLE t2 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1) SELECT 1 FROM t1 NATURAL LEFT JOIN t1 AS t2 FORCE INDEX(a); 1 1 @@ -4813,66 +4813,221 @@ CREATE TABLE t5 (f1 int) ; INSERT INTO t5 VALUES (20),(5); CREATE TABLE t6(f1 int); INSERT INTO t6 VALUES (9),(7); -SET SESSION join_buffer_size = 9000; +SET SESSION join_buffer_size = 2048; EXPLAIN SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 1 SIMPLE t2 ALL NULL NULL NULL NULL 12 -1 SIMPLE t3 ALL NULL NULL NULL NULL 1 +1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where 1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 -1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer -1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6; f1 f1 f1 f1 f2 f1 f1 3 9 NULL NULL NULL 20 9 7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -3 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -3 9 NULL NULL NULL 20 9 3 9 NULL NULL NULL 20 7 7 9 NULL NULL NULL 20 7 -18 9 NULL NULL NULL 20 7 -3 9 NULL NULL NULL 20 7 -7 9 NULL NULL NULL 20 7 -18 9 NULL NULL NULL 20 7 -3 9 NULL NULL NULL 20 7 3 9 NULL NULL NULL 5 9 7 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 5 7 +18 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 5 9 3 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 20 7 7 9 NULL NULL NULL 5 9 18 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 20 9 +7 9 NULL NULL NULL 20 9 +3 9 NULL NULL NULL 20 7 +7 9 NULL NULL NULL 20 7 +3 9 NULL NULL NULL 5 9 +7 9 NULL NULL NULL 5 9 3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 -18 9 NULL NULL NULL 5 7 -3 9 NULL NULL NULL 5 7 -7 9 NULL NULL NULL 20 9 18 9 NULL NULL NULL 20 9 3 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 20 9 -18 9 NULL NULL NULL 20 9 -7 9 NULL NULL NULL 5 9 -18 9 NULL NULL NULL 5 9 -7 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 20 7 3 9 NULL NULL NULL 20 7 +18 9 NULL NULL NULL 5 9 +3 9 NULL NULL NULL 5 9 +18 9 NULL NULL NULL 5 7 +3 9 NULL NULL NULL 5 7 +7 9 NULL NULL NULL 20 9 +18 9 NULL NULL NULL 20 9 7 9 NULL NULL NULL 20 7 18 9 NULL NULL NULL 20 7 -7 9 NULL NULL NULL 5 7 -18 9 NULL NULL NULL 5 7 -3 9 NULL NULL NULL 5 9 7 9 NULL NULL NULL 5 9 18 9 NULL NULL NULL 5 9 -3 9 NULL NULL NULL 5 7 7 9 NULL NULL NULL 5 7 18 9 NULL NULL NULL 5 7 SET SESSION join_buffer_size = DEFAULT; DROP TABLE t1,t2,t3,t4,t5,t6; +# +# Bug #698882: best equality substitution not applied to ref +# +CREATE TABLE t1 (a1 int NOT NULL, b1 char(10), INDEX idx (a1)); +CREATE TABLE t2 (a2 int NOT NULL, b2 char(10), INDEX idx (a2)); +CREATE TABLE t3 (a3 int NOT NULL, b3 char(10), INDEX idx (a3)); +INSERT INTO t1 VALUES (2,'xx'), (1,'xxx'), (11,'xxxxxxx'); +INSERT INTO t2 VALUES +(7,'yyyy'), (2,'y'), (3,'yyy'), (1,'yy'), (1,'yyyyy'), +(3,'yy'), (1,'y'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'), +(7,'yyyy'), (2,'yy'), (3,'yyy'), (1,'yyyyyyyy'), (1,'yyyyy'), +(3,'yy'), (1,'yyy'), (4,'yyy'), (7,'y'), (4,'yyyyy'), (7,'yyy'); +INSERT INTO t3 VALUES +(9,'zzzzzzz'), (2,'zzzzz'), (1,'z'), (9,'zz'), (1,'zz'), (5,'zzzzzzz'), +(4,'zz'), (3,'z'), (5,'zzzzzz'), (3,'zz'), (4,'zzzz'), (3,'z'), +(9,'zzzzzzzz'), (2,'zz'), (1,'zz'), (9,'zzz'), (1,'zzz'), (5,'zzzzzzzz'), +(4,'zzz'), (3,'zz'), (5,'zzzzzzz'), (3,'zzz'), (4,'zzzzz'), (3,'zz'), +(9,'zzzzzz'), (2,'zzzz'), (1,'zzz'), (9,'z'), (1,'z'), (5,'zzzzzz'), +(4,'z'), (3,'zzz'), (5,'zzzzz'), (3,'z'), (4,'zzz'), (3,'zzzz'), +(9,'zzzzz'), (2,'zzz'), (1,'zzzz'), (9,'zzz'), (1,'zzzz'), (5,'zzzzz'), +(4,'zzz'), (3,'zzzz'), (5,'zzzz'), (3,'zzz'), (4,'zz'), (3,'zzzzz'); +SET SESSION optimizer_switch='index_condition_pushdown=off'; +EXPLAIN SELECT * from t1,t2,t3 WHERE t3.a3=t1.a1 AND t2.a2=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t1.a1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t2.a2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL idx NULL NULL NULL 3 +1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 +1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 +SELECT * from t1,t2,t3 +WHERE t3.a3=t1.a1 AND t2.a2=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t1.a1 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SELECT * FROM t1,t2,t3 +WHERE t2.a2=t1.a1 AND t3.a3=t2.a2 AND +LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7; +a1 b1 a2 b2 a3 b3 +1 xxx 1 y 1 z +1 xxx 1 y 1 z +1 xxx 1 y 1 zz +1 xxx 1 y 1 zz +1 xxx 1 y 1 zzz +1 xxx 1 y 1 zzz +1 xxx 1 yy 1 z +1 xxx 1 yy 1 z +1 xxx 1 yy 1 zz +1 xxx 1 yy 1 zz +1 xxx 1 yyy 1 z +1 xxx 1 yyy 1 z +2 xx 2 y 2 zz +2 xx 2 y 2 zzz +2 xx 2 y 2 zzzz +2 xx 2 yy 2 zz +2 xx 2 yy 2 zzz +SET SESSION optimizer_switch=DEFAULT; +DROP TABLE t1,t2,t3; +# +# Bug #707555: crash with equality substitution in ref +# +CREATE TABLE t1 (f11 int, f12 int, PRIMARY KEY (f11), KEY (f12)) ; +INSERT INTO t1 VALUES (1,NULL), (8,NULL); +CREATE TABLE t2 (f21 int, f22 int, f23 int, KEY (f22)) ; +INSERT INTO t2 VALUES (1,NULL,3), (2,7,8); +CREATE TABLE t3 (f31 int, f32 int(11), PRIMARY KEY (f31), KEY (f32)) ; +INSERT INTO t3 VALUES (1,494862336); +CREATE TABLE t4 (f41 int, f42 int, PRIMARY KEY (f41), KEY (f42)) ; +INSERT INTO t4 VALUES (1,NULL), (8,NULL); +CREATE TABLE t5 (f51 int, PRIMARY KEY (f51)) ; +INSERT IGNORE INTO t5 VALUES (100); +CREATE TABLE t6 (f61 int, f62 int, KEY (f61)) ; +INSERT INTO t6 VALUES (NULL,1), (3,10); +CREATE TABLE t7 (f71 int, f72 int, KEY (f72)) ; +INSERT INTO t7 VALUES (1,NULL), (2,7); +EXPLAIN +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 system PRIMARY,f32 NULL NULL NULL 1 +1 SIMPLE t5 system PRIMARY NULL NULL NULL 1 +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ref f22 f22 5 const 1 +1 SIMPLE t6 ref f61 f61 5 const 1 Using where +1 SIMPLE t4 ref f42 f42 5 const 1 Using index +1 SIMPLE t7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +SELECT t2.f23 FROM +(t1 LEFT JOIN (t2 JOIN t3 ON t2.f22=t3.f32) ON t1.f11=t3.f31) +LEFT JOIN +(((t4 JOIN t5 ON t4.f42=t5.f51) LEFT JOIN t6 ON t6.f62>0) JOIN t7 ON t6.f61>0) +ON t3.f31 = t6.f61 +WHERE t7.f71>0; +f23 +DROP TABLE t1,t2,t3,t4,t5,t6,t7; End of 5.1 tests +# +# BUG#776274: substitution of a single row table +# +CREATE TABLE t1 (a int NOT NULL , b int); +INSERT INTO t1 VALUES (2,2); +SELECT * FROM t1 WHERE a = b; +a b +2 2 +EXPLAIN +SELECT * FROM t1 WHERE a = b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 +DROP TABLE t1; diff --git a/mysql-test/r/select_safe.result b/mysql-test/r/select_safe.result index feac9efcb13..26fb008c2a0 100644 --- a/mysql-test/r/select_safe.result +++ b/mysql-test/r/select_safe.result @@ -66,13 +66,13 @@ test.t1 analyze status OK insert into t1 values (null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"),(null,"a"); explain select STRAIGHT_JOIN * from t1,t1 as t2 where t1.b=t2.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL b NULL NULL NULL 21 -1 SIMPLE t2 ref b b 21 test.t1.b 6 Using where +1 SIMPLE t1 ALL b NULL NULL NULL 21 Using where +1 SIMPLE t2 ref b b 21 test.t1.b 6 set MAX_SEEKS_FOR_KEY=1; explain select STRAIGHT_JOIN * from t1,t1 as t2 where t1.b=t2.b; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL b NULL NULL NULL 21 -1 SIMPLE t2 ref b b 21 test.t1.b 6 Using where +1 SIMPLE t1 ALL b NULL NULL NULL 21 Using where +1 SIMPLE t2 ref b b 21 test.t1.b 6 SET MAX_SEEKS_FOR_KEY=DEFAULT; drop table t1; create table t1 (a int); diff --git a/mysql-test/r/shm.result b/mysql-test/r/shm.result index 0e086e000c7..4dfb88771aa 100644 --- a/mysql-test/r/shm.result +++ b/mysql-test/r/shm.result @@ -183,37 +183,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1389,15 +1389,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1413,15 +1413,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1429,7 +1429,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/sp-threads.result b/mysql-test/r/sp-threads.result index 953830ecc87..d974cfb9605 100644 --- a/mysql-test/r/sp-threads.result +++ b/mysql-test/r/sp-threads.result @@ -35,7 +35,7 @@ call bug9486(); show processlist; Id User Host db Command Time State Info # root localhost test Sleep # NULL -# root localhost test Query # Locked update t1, t2 set val= 1 where id1=id2 +# root localhost test Query # Table lock update t1, t2 set val= 1 where id1=id2 # root localhost test Query # NULL show processlist # root localhost test Sleep # NULL unlock tables; diff --git a/mysql-test/r/sp.result b/mysql-test/r/sp.result index 72079ee03a0..9370b63e847 100644 --- a/mysql-test/r/sp.result +++ b/mysql-test/r/sp.result @@ -6418,19 +6418,19 @@ INSERT INTO t1 VALUES (1), (2), (3), (4), (5); CREATE VIEW v1 AS SELECT c1 FROM t1; EXPLAIN SELECT * FROM t1 WHERE c1=1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c1 c1 5 const 1 Using where; Using index +1 SIMPLE t1 ref c1 c1 5 const 1 Using index EXPLAIN SELECT * FROM t1 WHERE c1=f1(); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c1 c1 5 const 1 Using where; Using index +1 SIMPLE t1 ref c1 c1 5 const 1 Using index EXPLAIN SELECT * FROM v1 WHERE c1=1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c1 c1 5 const 1 Using where; Using index +1 SIMPLE t1 ref c1 c1 5 const 1 Using index EXPLAIN SELECT * FROM v1 WHERE c1=f1(); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c1 c1 5 const 1 Using where; Using index +1 SIMPLE t1 ref c1 c1 5 const 1 Using index EXPLAIN SELECT * FROM t1 WHERE c1=f2(10); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c1 c1 5 const 1 Using where; Using index +1 SIMPLE t1 ref c1 c1 5 const 1 Using index EXPLAIN SELECT * FROM t1 WHERE c1=f2(c1); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL c1 5 NULL 5 Using where; Using index diff --git a/mysql-test/r/ssl.result b/mysql-test/r/ssl.result index 9ad515a53a3..1a52571c2d7 100644 --- a/mysql-test/r/ssl.result +++ b/mysql-test/r/ssl.result @@ -186,37 +186,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1392,15 +1392,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1416,15 +1416,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1432,7 +1432,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/ssl_compress.result b/mysql-test/r/ssl_compress.result index 1bd427a65e2..d66b0a3a7f5 100644 --- a/mysql-test/r/ssl_compress.result +++ b/mysql-test/r/ssl_compress.result @@ -189,37 +189,37 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range fld1 fld1 4 NULL 4 Using where; Using index select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%'; fld1 fld3 -218401 faithful +012001 flanking +013602 foldout +013606 fingerings 018007 fanatic -228311 fated 018017 featherweight -218022 feed -088303 feminine -058004 Fenton -038017 fetched 018054 fetters -208101 fiftieth -238007 filial -013606 fingerings -218008 finishers -038205 firearm -188505 fitting -202301 Fitzpatrick -238008 fixedly -012001 flanking 018103 flint 018104 flopping +036002 funereal +038017 fetched +038205 firearm +058004 Fenton +088303 feminine +186002 freakish 188007 flurried -013602 foldout +188505 fitting +198006 furthermore +202301 Fitzpatrick +208101 fiftieth +208113 freest +218008 finishers +218022 feed +218401 faithful 226205 foothill -232102 forgivably +226209 furnishings 228306 forthcoming -186002 freakish -208113 freest +228311 fated 231315 freezes -036002 funereal -226209 furnishings -198006 furthermore +232102 forgivably +238007 filial +238008 fixedly select fld3 from t2 where fld3 like "L%" and fld3 = "ok"; fld3 select fld3 from t2 where (fld3 like "C%" and fld3 = "Chantilly"); @@ -1395,15 +1395,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 @@ -1419,15 +1419,15 @@ id select_type table type possible_keys key key_len ref rows Extra explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where explain select companynr,companyname from t4 left join t2 using (companynr) where ifnull(companynr,1)>0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -1435,7 +1435,7 @@ companynr companynr explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary -1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008; fld1 companynr fld3 period 038008 37 reporters 1008 diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result index 87f76b5a9ad..0803acd8bd3 100644 --- a/mysql-test/r/subselect.result +++ b/mysql-test/r/subselect.result @@ -1,4 +1,7 @@ drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12; +drop view if exists v2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; select (select 2); (select 2) 2 @@ -50,7 +53,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra Warnings: Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 -Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having ((select '1') = 1) +Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having (<expr_cache><'1'>((select '1')) = 1) SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; 1 1 @@ -314,7 +317,7 @@ NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL Warnings: Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1 -Note 1003 select (select '2' from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` +Note 1003 select <expr_cache><`test`.`t2`.`a`>((select '2' from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`))) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2; ERROR 21000: Subquery returns more than 1 row create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq)); @@ -332,7 +335,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 100.00 Using index Warnings: Note 1276 Field or reference 'test.t6.clinic_uq' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`)) +Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where <expr_cache><`test`.`t6`.`clinic_uq`>(exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`))) select * from t1 where a= (select a from t2,t4 where t2.b=t4.b); ERROR 23000: Column 'a' in field list is ambiguous drop table t1,t2,t3; @@ -505,6 +508,10 @@ select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); ERROR 21000: Subquery returns more than 1 row select numeropost as a FROM t1 ORDER BY (SELECT 1 FROM t1 HAVING a=1); ERROR 21000: Subquery returns more than 1 row +show warnings; +Level Code Message +Error 1242 Subquery returns more than 1 row +Error 1028 Sort aborted drop table t1; create table t1 (a int); insert into t1 values (1),(2),(3); @@ -719,7 +726,7 @@ id 1 EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index Warnings: Note 1249 Select 2 was reduced during optimization Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1) @@ -731,7 +738,7 @@ id 2 EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index Warnings: Note 1249 Select 3 was reduced during optimization Note 1249 Select 2 was reduced during optimization @@ -743,7 +750,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL Warnings: -Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3)))) +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3))))) SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3); id SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2); @@ -891,7 +898,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index 2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 100.00 Using index Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2)` from `test`.`t1` +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1` CREATE TABLE t3 (a int(11) default '0'); INSERT INTO t3 VALUES (1),(2),(3); SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; @@ -904,9 +911,9 @@ explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) F id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index 2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1` +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1` drop table t1,t2,t3; create table t1 (a float); select 10.5 IN (SELECT * from t1 LIMIT 1); @@ -1231,7 +1238,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000); explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where +1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using index condition 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away Warnings: Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`)) @@ -1293,36 +1300,40 @@ a 4 explain extended select * from t2 where t2.a in (select a from t1); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 4 75.00 Using where; Using index; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`) select * from t2 where t2.a in (select a from t1 where t1.b <> 30); a 2 4 explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using where +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); a 2 3 explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 func 1 100.00 -2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 100.00 Using index +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join) +1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 100.00 Using index Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t3` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t3`.`a` = `test`.`t1`.`b`)) drop table t1, t2, t3; create table t1 (a int, b int, index a (a,b)); create table t2 (a int, index a (a)); create table t3 (a int, b int, index a (a)); insert into t1 values (1,10), (2,20), (3,30), (4,40); +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 +select rand()*100000+200,rand()*100000 from t0 A, t0 B, t0 C, t0 D; insert into t2 values (2), (3), (4), (5); insert into t3 values (10,3), (20,4), (30,5); select * from t2 where t2.a in (select a from t1); @@ -1332,31 +1343,31 @@ a 4 explain extended select * from t2 where t2.a in (select a from t1); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index; Using where +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using index; FirstMatch(t2) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where (`test`.`t1`.`a` = `test`.`t2`.`a`) select * from t2 where t2.a in (select a from t1 where t1.b <> 30); a 2 4 explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index; Using where +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); a 2 3 explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 ref a a 5 func 1001 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index; Using join buffer +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t3 index a a 5 NULL 3 100.00 Using where; Using index +1 PRIMARY t1 ref a a 10 test.t2.a,test.t3.a 116 100.61 Using index; FirstMatch(t2) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` = `test`.`t3`.`a`)) insert into t1 values (3,31); select * from t2 where t2.a in (select a from t1 where t1.b <> 30); a @@ -1369,11 +1380,11 @@ a 4 explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index; Using where +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2) Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) -drop table t1, t2, t3; +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) +drop table t0, t1, t2, t3; create table t1 (a int, b int); create table t2 (a int, b int); create table t3 (a int, b int); @@ -1463,25 +1474,25 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index 2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key Warnings: -Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1` +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1` explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index 2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key Warnings: -Note 1003 select `test`.`t1`.`s1` AS `s1`,<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1` +Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1` explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index 2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key Warnings: -Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1` +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1` explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index 2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Using where; Full scan on NULL key Warnings: -Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1` +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1` drop table t1,t2; create table t2 (a int, b int); create table t3 (a int); @@ -1736,14 +1747,14 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where 2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where Warnings: -Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`))))))) +Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`)))))))) explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY tt ALL NULL NULL NULL NULL 12 100.00 Using where 2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 100.00 Using where; Using index Warnings: Note 1276 Field or reference 'test.tt.id' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null)))) +Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(<expr_cache><`test`.`tt`.`id`>(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null))))) insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001'); create table t2 (id int not null, text varchar(20) not null default '', primary key (id)); insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10'); @@ -1767,7 +1778,7 @@ explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE a ALL NULL NULL NULL NULL 14 100.00 1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2 100.00 -1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where +1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using index condition Warnings: Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`b`.`id` = `test`.`a`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`) drop table t1,t2; @@ -2279,7 +2290,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.up.a' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`)) +Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where <expr_cache><`test`.`up`.`a`>(exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`))) drop table t1; CREATE TABLE t1 (t1_a int); INSERT INTO t1 VALUES (1); @@ -2820,19 +2831,20 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where Warnings: -Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1` +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 Using where -2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 1.00 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where Warnings: -Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = 'N') and (<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) and (<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`)))) +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`flag` = 'N')) explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary; Using filesort Warnings: -Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1` +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` DROP TABLE t1,t2; CREATE TABLE t1 (a char(5), b char(5)); INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa'); @@ -2949,7 +2961,7 @@ ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 1 PRIMARY r const PRIMARY PRIMARY 4 const 1 -2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using where +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; @@ -2961,7 +2973,7 @@ ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 1 PRIMARY r const PRIMARY PRIMARY 4 const 1 -2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using where +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; @@ -3412,7 +3424,7 @@ EXPLAIN SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where -2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort ALTER TABLE t1 ADD INDEX(a); SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); a b @@ -3423,7 +3435,7 @@ EXPLAIN SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where -2 DEPENDENT SUBQUERY t1 index NULL a 8 NULL 1 Using filesort +2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort DROP TABLE t1; create table t1( f1 int,f2 int); insert into t1 values (1,1),(2,2); @@ -3554,28 +3566,6 @@ ORDER BY t1.t DESC LIMIT 1); i1 i2 t i1 i2 t 24 1 2005-05-27 12:40:30 24 1 2006-06-20 12:29:40 DROP TABLE t1, t2; -CREATE TABLE t1 (i INT); -(SELECT i FROM t1) UNION (SELECT i FROM t1); -i -SELECT sql_no_cache * FROM t1 WHERE NOT EXISTS -( -(SELECT i FROM t1) UNION -(SELECT i FROM t1) -); -ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'UNION -(SELECT i FROM t1) -)' at line 3 -SELECT * FROM t1 -WHERE NOT EXISTS (((SELECT i FROM t1) UNION (SELECT i FROM t1))); -ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'UNION (SELECT i FROM t1)))' at line 2 -explain select ((select t11.i from t1 t11) union (select t12.i from t1 t12)) -from t1; -ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'union (select t12.i from t1 t12)) -from t1' at line 1 -explain select * from t1 where not exists -((select t11.i from t1 t11) union (select t12.i from t1 t12)); -ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'union (select t12.i from t1 t12))' at line 2 -DROP TABLE t1; CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b)); insert into t1 (a) values (FLOOR(rand() * 100)); insert into t1 (a) select FLOOR(rand() * 100) from t1; @@ -3663,12 +3653,15 @@ FROM t1 GROUP BY t1.a LIMIT 1) 2 2 DROP TABLE t1,t2; -CREATE TABLE t1 (a int, b int auto_increment, PRIMARY KEY (b)); +CREATE TABLE t1 (a int, b int, PRIMARY KEY (b)); CREATE TABLE t2 (x int auto_increment, y int, z int, PRIMARY KEY (x), FOREIGN KEY (y) REFERENCES t1 (b)); +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 select RAND()*1000, A.a + 10*(B.a+10*(C.a+10*D.a)) +from t3 A, t3 B, t3 C, t3 D where D.a<3; +insert into t2(y,z) select t1.b, RAND()*1000 from t1, t3; SET SESSION sort_buffer_size = 32 * 1024; -Warnings: -Warning 1292 Truncated incorrect sort_buffer_size value: '32768' SELECT SQL_NO_CACHE COUNT(*) FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c FROM t1) t; @@ -3680,7 +3673,7 @@ FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c FROM t1) t; COUNT(*) 3000 -DROP TABLE t1,t2; +DROP TABLE t1,t2,t3; CREATE TABLE t1 (id char(4) PRIMARY KEY, c int); CREATE TABLE t2 (c int); INSERT INTO t1 VALUES ('aa', 1); @@ -4104,8 +4097,6 @@ INSERT INTO `t1` VALUES ('asdf','2007-02-08 01:11:26'); INSERT INTO `t2` VALUES ('abcdefghijk'); INSERT INTO `t2` VALUES ('asdf'); SET session sort_buffer_size=8192; -Warnings: -Warning 1292 Truncated incorrect sort_buffer_size value: '8192' SELECT (SELECT 1 FROM t1 WHERE t1.a=t2.a ORDER BY t1.b LIMIT 1) AS d1 FROM t2; d1 1 @@ -4213,8 +4204,8 @@ CREATE INDEX I1 ON t1 (a); CREATE INDEX I2 ON t1 (b); EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where +1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1) SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); a b CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10)); @@ -4223,15 +4214,15 @@ CREATE INDEX I1 ON t2 (a); CREATE INDEX I2 ON t2 (b); EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY t2 index_subquery I1 I1 4 func 2 Using index; Using where +1 PRIMARY t2 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t2 ref I1 I1 4 test.t2.b 2 Using where; Using index; FirstMatch(t2) SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); a b EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where +1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1) SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; @@ -4260,37 +4251,20 @@ out_a MIN(b) 1 2 2 4 DROP TABLE t1; -CREATE TABLE t1 (a INT); -CREATE TABLE t2 (a INT); -INSERT INTO t1 VALUES (1),(2); -INSERT INTO t2 VALUES (1),(2); -SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a)); -2 -2 -2 -EXPLAIN EXTENDED -SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a)); -id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where -2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where -Warnings: -Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 -Note 1003 select 2 AS `2` from `test`.`t1` where exists(select 1 from `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`)) -EXPLAIN EXTENDED -SELECT 2 FROM t1 WHERE EXISTS ((SELECT 1 FROM t2 WHERE t1.a=t2.a) UNION -(SELECT 1 FROM t2 WHERE t1.a = t2.a)); -ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'UNION -(SELECT 1 FROM t2 WHERE t1.a = t2.a))' at line 2 -DROP TABLE t1,t2; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t1(f11 int, f12 int); create table t2(f21 int unsigned not null, f22 int, f23 varchar(10)); insert into t1 values(1,1),(2,2), (3, 3); +insert into t2 +select -1 , (@a:=(A.a + 10 * (B.a + 10 * (C.a+10*D.a))))/5000 + 1, @a +from t0 A, t0 B, t0 C, t0 D; set session sort_buffer_size= 33*1024; select count(*) from t1 where f12 = (select f22 from t2 where f22 = f12 order by f21 desc, f22, f23 limit 1); count(*) 3 -drop table t1,t2; +drop table t0,t1,t2; CREATE TABLE t4 ( f7 varchar(32) collate utf8_bin NOT NULL default '', f10 varchar(32) collate utf8_bin default NULL, @@ -4350,16 +4324,16 @@ CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 -2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort Warnings: -Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` group by `test`.`t1`.`a` having 1)) +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `materialized subselect`.`1`)))))) EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables -2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort Warnings: -Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having 1)) +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `materialized subselect`.`1`)))))) DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -4436,6 +4410,203 @@ pk int_key 7 3 DROP TABLE t1,t2; End of 5.0 tests. +create table t_out (subcase char(3), +a1 char(2), b1 char(2), c1 char(2)); +create table t_in (a2 char(2), b2 char(2), c2 char(2)); +insert into t_out values ('A.1','2a', NULL, '2a'); +insert into t_out values ('A.3', '2a', NULL, '2a'); +insert into t_out values ('A.4', '2a', NULL, 'xx'); +insert into t_out values ('B.1', '2a', '2a', '2a'); +insert into t_out values ('B.2', '2a', '2a', '2a'); +insert into t_out values ('B.3', '3a', 'xx', '3a'); +insert into t_out values ('B.4', 'xx', '3a', '3a'); +insert into t_in values ('1a', '1a', '1a'); +insert into t_in values ('2a', '2a', '2a'); +insert into t_in values (NULL, '2a', '2a'); +insert into t_in values ('3a', NULL, '3a'); + +Test general IN semantics (not top-level) + +case A.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'A.1'; +subcase pred_in pred_not_in +A.1 0 1 +case A.2 - impossible +case A.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.3'; +subcase pred_in pred_not_in +A.3 NULL NULL +case A.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.4'; +subcase pred_in pred_not_in +A.4 0 1 +case B.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'B.1'; +subcase pred_in pred_not_in +B.1 0 1 +case B.2 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.2'; +subcase pred_in pred_not_in +B.2 1 0 +case B.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.3'; +subcase pred_in pred_not_in +B.3 NULL NULL +case B.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.4'; +subcase pred_in pred_not_in +B.4 0 1 + +Test IN as top-level predicate, and +as non-top level for cases A.3, B.3 (the only cases with NULL result). + +case A.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case A.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'A.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case A.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +case B.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case B.2 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) IN (select * from t_in); +pred_in +T +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.2' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +case B.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'B.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case B.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +drop table t_out; +drop table t_in; CREATE TABLE t1 (a INT, b INT); INSERT INTO t1 VALUES (2,22),(1,11),(2,22); SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; @@ -4515,9 +4686,9 @@ INSERT INTO t3 VALUES (1,1,1), (2,32,1); explain SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 index b,b_2 b 10 NULL 2 Using index -1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.b 1 Using index -2 DEPENDENT SUBQUERY t2 index b,b_2,c d 5 NULL 1 Using where +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t3 ref b,b_2 b 5 test.t1.a 1 Using index +2 DEPENDENT SUBQUERY t2 ref b,b_2,c b 10 test.t3.c,test.t1.a 1 Using where; Using index; Using filesort SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; a incorrect 1 1 @@ -4550,6 +4721,42 @@ DELETE FROM v3; DROP VIEW v1,v2,v3; DROP TABLE t1,t2; # +# BUG#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +# # Bug#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result # create table t1(id integer primary key, g integer, v integer, s char(1)); @@ -4599,6 +4806,7 @@ SELECT 1 FROM t1 GROUP BY 1 1 DROP TABLE t1; +set @@optimizer_switch=@save_optimizer_switch; # # Bug #49512 : subquery with aggregate function crash # subselect_single_select_engine::exec() @@ -4762,6 +4970,128 @@ ERROR 21000: Subquery returns more than 1 row drop table t1,t2; End of 5.1 tests # +# No BUG#, a case brought from 5.2's innodb_mysql_lock.test +# +create table t1 (i int not null primary key); +insert into t1 values (1),(2),(3),(4),(5); +create table t2 (j int not null primary key); +insert into t2 values (1),(2),(3),(4),(5); +create table t3 (k int not null primary key); +insert into t3 values (1),(2),(3); +create view v2 as select t2.j as j from t2 where t2.j in (select t1.i from t1); +select * from t3 where k in (select j from v2); +k +1 +2 +3 +drop table t1,t2,t3; +drop view v2; +# +# Bug#52068: Optimizer generates invalid semijoin materialization plan +# +drop table if exists ot1, ot2, it1, it2; +CREATE TABLE ot1(a INTEGER); +INSERT INTO ot1 VALUES(5), (8); +CREATE TABLE it2(a INTEGER); +INSERT INTO it2 VALUES(9), (5), (1), (8); +CREATE TABLE it3(a INTEGER); +INSERT INTO it3 VALUES(7), (1), (0), (5), (1), (4); +CREATE TABLE ot4(a INTEGER); +INSERT INTO ot4 VALUES(1), (3), (5), (7), (9), (7), (3), (1); +SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +a a +5 1 +8 1 +5 5 +8 5 +5 7 +8 7 +5 7 +8 7 +5 1 +8 1 +explain SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot1 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 24 +1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY it2 ALL NULL NULL NULL NULL 4 +2 SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +DROP TABLE IF EXISTS ot1, ot4, it2, it3; +# +# Bug#729039: NULL keys used to evaluate subquery +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (NULL), (1), (NULL), (2); +CREATE TABLE t2 (a int, INDEX idx(a)) ; +INSERT INTO t2 VALUES (NULL), (1), (NULL); +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX () WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX() WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ref idx idx 5 test.t1.a 2 Using index +DROP TABLE t1,t2; +# +# BUG#752992: Wrong results for a subquery with 'semijoin=on' +# +CREATE TABLE t1 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t1 VALUES (11,0); +INSERT INTO t1 VALUES (12,5); +INSERT INTO t1 VALUES (15,0); +CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t2 VALUES (11,1); +INSERT INTO t2 VALUES (12,2); +INSERT INTO t2 VALUES (15,4); +EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3 Start temporary +1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join) +1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index; End temporary +SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +pk i +11 0 +12 5 +15 0 +DROP table t1,t2; +# +# Bug#751350: crash with pushed condition for outer references when +# there should be none of such conditions +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (0,0),(0,0); +EXPLAIN +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +b +0 +DROP TABLE t1; +# # Bug #11765713 58705: # OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES # CREATED BY OPT_SUM_QUERY diff --git a/mysql-test/r/subselect2.result b/mysql-test/r/subselect2.result index 27ec0ccfc0f..9d62d3a54f1 100644 --- a/mysql-test/r/subselect2.result +++ b/mysql-test/r/subselect2.result @@ -126,11 +126,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 ALL DDOCTYPEID_IDX NULL NULL NULL 9 Using where 1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1 1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1 -2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where -3 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where -4 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where -5 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where -6 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 func 1 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 func 1 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where drop table t1, t2, t3, t4; CREATE TABLE t1 (a int(10) , PRIMARY KEY (a)) Engine=InnoDB; INSERT INTO t1 VALUES (1),(2); diff --git a/mysql-test/r/subselect3.result b/mysql-test/r/subselect3.result index 468f939c943..3d7cbdd9ff7 100644 --- a/mysql-test/r/subselect3.result +++ b/mysql-test/r/subselect3.result @@ -1,4 +1,5 @@ -drop table if exists t0, t1, t2, t3, t4, t5; +drop table if exists t0, t1, t2, t3, t4, t5, t11, t12, t21, t22; +set @save_optimizer_switch=@@optimizer_switch; create table t1 (oref int, grp int, ie int) ; insert into t1 (oref, grp, ie) values (1, 1, 1), @@ -30,7 +31,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`))))))) AS `Z` from `test`.`t2` explain extended select a, oref from t2 where a in (select max(ie) from t1 where oref=t2.oref group by grp); @@ -39,7 +40,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having (<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`))))) +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having (<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) select a, oref, a in ( select max(ie) from t1 where oref=t2.oref group by grp union select max(ie) from t1 where oref=t2.oref group by grp @@ -63,12 +64,15 @@ Handler_read_rnd_next 11 select ' ^ This must show 11' Z; Z ^ This must show 11 +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort Warnings: -Note 1003 select <in_optimizer>(`test`.`t3`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = 4) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t3`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `a in (select max(ie) from t1 where oref=4 group by grp)` from `test`.`t3` +Note 1003 select <expr_cache><`test`.`t3`.`a`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = 4) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t3`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`))))))) AS `a in (select max(ie) from t1 where oref=4 group by grp)` from `test`.`t3` +set @@optimizer_switch=@save_optimizer_switch; drop table t1, t2, t3; create table t1 (a int, oref int, key(a)); insert into t1 values @@ -92,16 +96,17 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) having trigcond(<is_not_null_test>(`test`.`t1`.`a`)))))) AS `Z` from `test`.`t2` flush status; select oref, a from t2 where a in (select a from t1 where oref=t2.oref); oref a 1 1 show status like '%Handler_read_rnd_next'; Variable_name Value -Handler_read_rnd_next 5 +Handler_read_rnd_next 11 delete from t2; insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0); +set optimizer_switch='subquery_cache=off'; flush status; select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; oref a Z @@ -120,6 +125,7 @@ Handler_read_rnd_next 29 select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z; Z No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1. +set @@optimizer_switch=@save_optimizer_switch; drop table t1, t2; create table t1 (a int, b int, primary key (a)); insert into t1 values (1,1), (3,1),(100,1); @@ -157,7 +163,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 100.00 Using where Warnings: Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`)))) AS `Z` from `test`.`t3` +Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t3` drop table t1, t2, t3; create table t1 (a int NOT NULL, b int NOT NULL, key(a)); insert into t1 values @@ -185,7 +191,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 100.00 Using where Warnings: Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`))))) AS `Z` from `test`.`t3` +Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`)))))) AS `Z` from `test`.`t3` drop table t1,t2,t3; create table t1 (oref int, grp int); insert into t1 (oref, grp) values @@ -209,7 +215,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort Warnings: Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select count(0) from `test`.`t1` group by `test`.`t1`.`grp` having ((`test`.`t1`.`grp` = `test`.`t2`.`oref`) and trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(count(0))))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select count(0) from `test`.`t1` group by `test`.`t1`.`grp` having ((`test`.`t1`.`grp` = `test`.`t2`.`oref`) and trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(count(0)))))))) AS `Z` from `test`.`t2` drop table t1, t2; create table t1 (a int, b int, primary key (a)); insert into t1 values (1,1), (3,1),(100,1); @@ -241,7 +247,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`))))))) AS `Z` from `test`.`t2` select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2; a b oref Z NULL 1 100 0 @@ -255,10 +261,10 @@ from t2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 2 100.00 Using where; Full scan on NULL key -2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 100 100.00 Using where; Using join buffer +2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 100 100.00 Using where; Using join buffer (flat, BNL join) Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(select `test`.`t1`.`a`,`test`.`t1`.`b` from `test`.`t1` join `test`.`t4` where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(select `test`.`t1`.`a`,`test`.`t1`.`b` from `test`.`t1` join `test`.`t4` where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))) AS `Z` from `test`.`t2` select a,b, oref, (a,b) in (select a,b from t1,t4 where c=t2.oref) Z from t2; @@ -303,7 +309,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2` where ((`test`.`t2`.`b` = 10) and (`test`.`t2`.`a` = 10)) +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`))))))) AS `Z` from `test`.`t2` where ((`test`.`t2`.`b` = 10) and (`test`.`t2`.`a` = 10)) drop table t1, t2; create table t1 (oref char(4), grp int, ie int); insert into t1 (oref, grp, ie) values @@ -573,7 +579,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key Warnings: Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2` +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`))))))) AS `Z` from `test`.`t2` drop table t1,t2; create table t1 (oref char(4), grp int, ie int primary key); insert into t1 (oref, grp, ie) values @@ -692,6 +698,8 @@ a MAX(b) test 2 3 h 3 4 i DROP TABLE t1, t2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; CREATE TABLE t1 (a int); CREATE TABLE t2 (b int, PRIMARY KEY(b)); INSERT INTO t1 VALUES (1), (NULL), (4); @@ -703,7 +711,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using index 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: -Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (not(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t1` where ((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)) having <is_not_null_test>(`test`.`t1`.`a`)))))) +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (not(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t1` where ((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)) having <is_not_null_test>(`test`.`t1`.`a`))))))) SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1)); a SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4)); @@ -724,7 +732,7 @@ WHERE t3.name='xxx' AND t2.id=t3.id); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where 2 DEPENDENT SUBQUERY t2 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index; Full scan on NULL key -2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Full scan on NULL key +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using index condition; Using where; Full scan on NULL key SELECT * FROM t1 WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 WHERE t3.name='xxx' AND t2.id=t3.id); @@ -759,6 +767,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where 2 DEPENDENT SUBQUERY t2 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where DROP TABLE t1, t2; +set @@optimizer_switch=@save_optimizer_switch; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES(1); CREATE TABLE t2 (placeholder CHAR(11)); @@ -779,6 +788,15 @@ SELECT 1 FROM t1 WHERE t1.a NOT IN (SELECT 1 FROM t1, t2 WHERE 0); 1 1 DROP TABLE t1, t2; +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +select a, (select max(b) from t1) into outfile "subselect.out.file.1" from t1; +delete from t1; +load data infile "subselect.out.file.1" into table t1; +select * from t1; +a b +1 0.123 +drop table t1; CREATE TABLE t1 ( pk INT PRIMARY KEY, int_key INT, @@ -864,11 +882,18 @@ Level Code Message Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #2 Note 1276 Field or reference 'test.t1.c' of SELECT #3 was resolved in SELECT #2 Error 1054 Unknown column 'c' in 'field list' -Note 1003 select `c` AS `c` from (select (select count(`test`.`t1`.`a`) from (select count(`test`.`t1`.`b`) AS `COUNT(b)` from `test`.`t1`) `x` group by `t1`.`c`) AS `(SELECT COUNT(a) FROM +Note 1003 select `c` AS `c` from (select <expr_cache><count(`test`.`t1`.`a`),`test`.`t1`.`c`>((select count(`test`.`t1`.`a`) from (select count(`test`.`t1`.`b`) AS `COUNT(b)` from `test`.`t1`) `x` group by `t1`.`c`)) AS `(SELECT COUNT(a) FROM (SELECT COUNT(b) FROM t1) AS x GROUP BY c )` from `test`.`t1` group by `test`.`t1`.`b`) `y` DROP TABLE t1; End of 5.0 tests +# +# BUG#36896: Server crash on SELECT FROM DUAL +# +create table t1 (a int); +select 1 as res from dual where (1) in (select * from t1); +res +drop table t1; create table t0 (a int); insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t1 ( @@ -930,6 +955,8 @@ i1 i2 4 NULL 5 0 FLUSH STATUS; +set @save_optimizer_switch2=@@optimizer_switch; +set optimizer_switch='subquery_cache=off'; SELECT i1, i2 FROM t1 @@ -944,7 +971,7 @@ i1 i2 # Baseline: SHOW STATUS LIKE '%Handler_read_rnd_next'; Variable_name Value -Handler_read_rnd_next 17 +Handler_read_rnd_next 18 INSERT INTO t1 VALUES (NULL, NULL); FLUSH STATUS; @@ -961,6 +988,450 @@ i1 i2 # (read record from t1, but do not read from t2) SHOW STATUS LIKE '%Handler_read_rnd_next'; Variable_name Value -Handler_read_rnd_next 18 +Handler_read_rnd_next 19 +set @@optimizer_switch=@save_optimizer_switch2; DROP TABLE t1,t2; End of 5.1 tests +CREATE TABLE t1 ( +a int(11) NOT NULL, +b int(11) NOT NULL, +c datetime default NULL, +PRIMARY KEY (a), +KEY idx_bc (b,c) +); +INSERT INTO t1 VALUES +(406989,67,'2006-02-23 17:08:46'), (150078,67,'2005-10-26 11:17:45'), +(406993,67,'2006-02-27 11:20:57'), (245655,67,'2005-12-08 15:59:08'), +(406994,67,'2006-02-27 11:26:46'), (256,67,NULL), +(398341,67,'2006-02-20 04:48:44'), (254,67,NULL),(1120,67,NULL), +(406988,67,'2006-02-23 17:07:22'), (255,67,NULL), +(398340,67,'2006-02-20 04:38:53'),(406631,67,'2006-02-23 10:49:42'), +(245653,67,'2005-12-08 15:59:07'),(406992,67,'2006-02-24 16:47:18'), +(245654,67,'2005-12-08 15:59:08'),(406995,67,'2006-02-28 11:55:00'), +(127261,67,'2005-10-13 12:17:58'),(406991,67,'2006-02-24 16:42:32'), +(245652,67,'2005-12-08 15:58:27'),(398545,67,'2006-02-20 04:53:13'), +(154504,67,'2005-10-28 11:53:01'),(9199,67,NULL),(1,67,'2006-02-23 15:01:35'), +(223456,67,NULL),(4101,67,NULL),(1133,67,NULL), +(406990,67,'2006-02-23 18:01:45'),(148815,67,'2005-10-25 15:34:17'), +(148812,67,'2005-10-25 15:30:01'),(245651,67,'2005-12-08 15:58:27'), +(154503,67,'2005-10-28 11:52:38'); +create table t11 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 asc; +create table t12 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 desc; +create table t21 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 asc; +create table t22 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 desc; +update t22 set c = '2005-12-08 15:58:27' where a = 255; +explain select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 8 Using temporary; Using filesort +1 PRIMARY t21 ALL NULL NULL NULL NULL 26 Using where; Using join buffer (flat, BNL join) +1 PRIMARY t22 ALL NULL NULL NULL NULL 26 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY t11 ALL NULL NULL NULL NULL 8 Using where +2 SUBQUERY t12 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join) +select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; +a b c +256 67 NULL +drop table t1, t11, t12, t21, t22; +create table t1(a int); +insert into t1 values (0),(1); +set @@optimizer_switch='firstmatch=off'; +explain +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY X ALL NULL NULL NULL NULL 2 +2 DEPENDENT SUBQUERY Y ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY subselect3 eq_ref unique_key unique_key 5 func 1 +3 SUBQUERY Z ALL NULL NULL NULL NULL 2 +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +subq +NULL +0 +set @@optimizer_switch=@save_optimizer_switch; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select * from t0; +insert into t1 select a+10 from t0; +set @@optimizer_switch='firstmatch=off,materialization=off'; +insert into t0 values(2); +explain select * from t1 where 2 in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 11 Using where; Start temporary; End temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +select * from t1 where 2 in (select a from t0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +set @@optimizer_switch='default,materialization=off'; +explain select * from t1 where 2 in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 11 Using where; FirstMatch +1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +select * from t1 where 2 in (select a from t0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +set @@optimizer_switch=@save_optimizer_switch; +explain select * from (select a from t0) X where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 +1 PRIMARY subselect3 eq_ref unique_key unique_key 5 func 1 +3 SUBQUERY t1 ALL NULL NULL NULL NULL 20 +2 DERIVED t0 ALL NULL NULL NULL NULL 11 +drop table t0, t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2)); +insert into t1 select A.a+10*(B.a+10*C.a), 0, 0, 'filler' from t0 A, t0 B, t0 C; +insert into t1 select * from t1 where kp1 < 20; +create table t3 (a int); +insert into t3 select A.a + 10*B.a from t0 A, t0 B; +explain select * from t3 where a in (select kp1 from t1 where kp1<20); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using where; Using index +create table t4 (pk int primary key); +insert into t4 select a from t3; +explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20 +and t4.pk=t1.c); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Rowid-ordered scan +2 SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 Using index +drop table t1, t3, t4; +create table t1 (a int) as select * from t0 where a < 5; +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch='firstmatch=off,materialization=off'; +set @@max_heap_table_size= 16384; +explain select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY E ALL NULL NULL NULL NULL 5 Start temporary +1 PRIMARY A ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +1 PRIMARY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +1 PRIMARY C ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join) +1 PRIMARY D ALL NULL NULL NULL NULL 10 Using where; End temporary; Using join buffer (flat, BNL join) +flush status; +select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +count(*) +5000 +show status like 'Created_tmp_disk_tables'; +Variable_name Value +Created_tmp_disk_tables 1 +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch=@save_optimizer_switch; +drop table t0, t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 values (1),(2); +create table t3 ( a int , filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, 'filler' from t0 A, t0 B; +explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 +1 PRIMARY t3 ref a a 5 test.t2.a 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +select * from t3 where a in (select a from t2); +a filler +1 filler +2 filler +drop table t0, t2, t3; +set @@optimizer_switch='firstmatch=off,materialization=off'; +create table t1 (a date); +insert into t1 values ('2008-01-01'),('2008-01-01'),('2008-02-01'),('2008-02-01'); +create table t2 (a int); +insert into t2 values (1),(2); +create table t3 (a char(10)); +insert into t3 select * from t1; +insert into t3 values (1),(2); +explain select * from t2 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where; End temporary; Using join buffer (flat, BNL join) +explain select * from t2 where a in (select a from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join) +explain select * from t2 where a in (select a from t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY t3 ALL NULL NULL NULL NULL 6 Using where; End temporary; Using join buffer (flat, BNL join) +explain select * from t1 where a in (select a from t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Start temporary +1 PRIMARY t3 ALL NULL NULL NULL NULL 6 Using where; End temporary; Using join buffer (flat, BNL join) +drop table t1, t2, t3; +create table t1 (a decimal); +insert into t1 values (1),(2); +explain select * from t1 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join) +drop table t1; +set @@optimizer_switch=@save_optimizer_switch; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 as select * from t1; +create table t3 (a int, b int, filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t1 A, t1 B, t1 C; +explain select * from t1, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30) and t1.a =3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t2.a 10 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +explain select straight_join * from t1 A, t1 B where A.a in (select a from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY A ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +explain select straight_join * from t2 X, t2 Y +where X.a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY X ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY Y ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +create table t0 (a int, b int); +insert into t0 values(1,1); +explain select * from t0, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 system NULL NULL NULL NULL 1 +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t2.a 10 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +create table t4 as select a as x, a as y from t1; +explain select * from t0, t3 where (t3.a, t3.b) in (select x,y from t4) and (t3.a < 10 or t3.a >30); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 system NULL NULL NULL NULL 1 +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t4.x 10 Using where +2 SUBQUERY t4 ALL NULL NULL NULL NULL 10 Using where +drop table t0,t1,t2,t3,t4; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, filler char(100), key(a,b)); +insert into t1 select A.a, B.a, 'filler' from t0 A, t0 B; +create table t2 as select * from t1; +explain select * from t2 where a in (select b from t1 where a=3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 100 Using where +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 ref a a 10 const,test.t2.a 8 Using index +explain select * from t2 where (b,a) in (select a,b from t1 where a=3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 100 Using where +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t1 ref a a 10 const,test.t2.a 8 Using index +drop table t1,t2; +create table t1 (a int, b int); +insert into t1 select a,a from t0; +create table t2 (a int, b int); +insert into t2 select A.a + 10*B.a, A.a + 10*B.a from t0 A, t0 B; +set @@optimizer_switch='firstmatch=off'; +explain select * from t1 where (a,b) in (select a,b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 100 +set @save_optimizer_search_depth=@@optimizer_search_depth; +set @@optimizer_search_depth=63; +explain select * from t1 where (a,b) in (select a,b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 100 +set @@optimizer_search_depth=@save_optimizer_search_depth; +set @@optimizer_switch=@save_optimizer_switch; +drop table t0, t1, t2; +create table t0 (a decimal(4,2)); +insert into t0 values (10.24), (22.11); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 +select * from t0 where a in (select a from t1); +a +10.24 +22.11 +drop table t0, t1; +create table t0(a date); +insert into t0 values ('2008-01-01'),('2008-02-02'); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 4 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 +select * from t0 where a in (select a from t1); +a +2008-01-01 +2008-02-02 +drop table t0, t1; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select a as a, a as b, a as c from t0 where a < 3; +create table t2 as select a as a, a as b from t0 where a < 3; +insert into t2 select * from t2; +explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY subselect2 eq_ref unique_key unique_key 15 func 1 +2 SUBQUERY X ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY Y ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +2 SUBQUERY Z ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +drop table t0,t1,t2; + +BUG#37842: Assertion in DsMrr_impl::dsmrr_init, at handler.cc:4307 + +CREATE TABLE t1 ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_key` int(11) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `int_key` (`int_key`) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,9),(2,3),(3,8),(4,6),(5,9),(6,5),(7,5),(8,9),(9,1),(10,10); +SELECT `pk` FROM t1 AS OUTR WHERE `int_key` = ALL ( +SELECT `int_key` FROM t1 AS INNR WHERE INNR . `pk` >= 9 +); +pk +DROP TABLE t1; + +BUG#40118 Crash when running Batched Key Access and requiring one match for each key + +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, key(a)); +insert into t1 select * from t0; +alter table t1 add b int not null, add filler char(200); +insert into t1 select * from t1; +insert into t1 select * from t1; +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=6; +select * from t0 where t0.a in (select t1.a from t1 where t1.b=0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +set join_cache_level=@save_join_cache_level; +drop table t0, t1; +# +# BUG#32665 Query with dependent subquery is too slow +# +create table t1 ( +idIndividual int primary key +); +insert into t1 values (1),(2); +create table t2 ( +idContact int primary key, +contactType int, +idObj int +); +insert into t2 values (1,1,1),(2,2,2),(3,3,3); +create table t3 ( +idAddress int primary key, +idContact int, +postalStripped varchar(100) +); +insert into t3 values (1,1, 'foo'), (2,2,'bar'); +The following must be converted to a semi-join: +explain extended SELECT a.idIndividual FROM t1 a +WHERE a.idIndividual IN +( SELECT c.idObj FROM t3 cona +INNER JOIN t2 c ON c.idContact=cona.idContact +WHERE cona.postalStripped='T2H3B2' + ); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 1.00 +1 PRIMARY a index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +2 SUBQUERY cona ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY c eq_ref PRIMARY PRIMARY 4 test.cona.idContact 1 100.00 +Warnings: +Note 1003 select `test`.`a`.`idIndividual` AS `idIndividual` from `test`.`t1` `a` semi join (`test`.`t3` `cona` join `test`.`t2` `c`) where ((`test`.`c`.`idContact` = `test`.`cona`.`idContact`) and (`test`.`a`.`idIndividual` = `test`.`c`.`idObj`) and (`test`.`cona`.`postalStripped` = 'T2H3B2')) +drop table t1,t2,t3; +# +# BUG#47367 Crash in Name_resolution_context::process_error +# +SET SESSION optimizer_switch = 'default,semijoin=off'; +CREATE TABLE t1 (f1 INTEGER); +CREATE TABLE t2 LIKE t1; +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +CALL p1; +f1 +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +CALL p1; +f1 +DROP PROCEDURE p1; +# Restore the original column list of table t2: +ALTER TABLE t2 CHANGE COLUMN my_column f1 INT; +SET SESSION optimizer_switch = 'semijoin=on'; +# Recreate procedure so that we eliminate any caching effects +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +CALL p1; +f1 +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +CALL p1; +ERROR 42S22: Unknown column 'f1' in 'where clause' +DROP PROCEDURE p1; +DROP TABLE t1, t2; +set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/subselect3_jcl6.result b/mysql-test/r/subselect3_jcl6.result new file mode 100644 index 00000000000..b8a30ce1722 --- /dev/null +++ b/mysql-test/r/subselect3_jcl6.result @@ -0,0 +1,1449 @@ +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +drop table if exists t0, t1, t2, t3, t4, t5, t11, t12, t21, t22; +set @save_optimizer_switch=@@optimizer_switch; +create table t1 (oref int, grp int, ie int) ; +insert into t1 (oref, grp, ie) values +(1, 1, 1), +(1, 1, 1), +(1, 2, NULL), +(2, 1, 3), +(3, 1, 4), +(3, 2, NULL); +create table t2 (oref int, a int); +insert into t2 values +(1, 1), +(2, 2), +(3, 3), +(4, NULL), +(2, NULL); +select a, oref, a in (select max(ie) +from t1 where oref=t2.oref group by grp) Z from t2; +a oref Z +1 1 1 +2 2 0 +3 3 NULL +NULL 4 0 +NULL 2 NULL +explain extended +select a, oref, a in (select max(ie) +from t1 where oref=t2.oref group by grp) Z from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`))))))) AS `Z` from `test`.`t2` +explain extended +select a, oref from t2 +where a in (select max(ie) from t1 where oref=t2.oref group by grp); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having (<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) +select a, oref, a in ( +select max(ie) from t1 where oref=t2.oref group by grp union +select max(ie) from t1 where oref=t2.oref group by grp +) Z from t2; +a oref Z +1 1 1 +2 2 0 +3 3 NULL +NULL 4 0 +NULL 2 NULL +create table t3 (a int); +insert into t3 values (NULL), (NULL); +flush status; +select a in (select max(ie) from t1 where oref=4 group by grp) from t3; +a in (select max(ie) from t1 where oref=4 group by grp) +0 +0 +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 11 +select ' ^ This must show 11' Z; +Z + ^ This must show 11 +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; +explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select <expr_cache><`test`.`t3`.`a`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = 4) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t3`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`))))))) AS `a in (select max(ie) from t1 where oref=4 group by grp)` from `test`.`t3` +set @@optimizer_switch=@save_optimizer_switch; +drop table t1, t2, t3; +create table t1 (a int, oref int, key(a)); +insert into t1 values +(1, 1), +(1, NULL), +(2, 3), +(2, NULL), +(3, NULL); +create table t2 (a int, oref int); +insert into t2 values (1, 1), (2,2), (NULL, 3), (NULL, 4); +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; +oref a Z +1 1 1 +2 2 0 +3 NULL NULL +4 NULL 0 +explain extended +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 4 100.00 +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) having trigcond(<is_not_null_test>(`test`.`t1`.`a`)))))) AS `Z` from `test`.`t2` +flush status; +select oref, a from t2 where a in (select a from t1 where oref=t2.oref); +oref a +1 1 +show status like '%Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 11 +delete from t2; +insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0); +set optimizer_switch='subquery_cache=off'; +flush status; +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; +oref a Z +0 NULL 0 +0 NULL 0 +0 NULL 0 +0 NULL 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 29 +select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z; +Z +No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1. +set @@optimizer_switch=@save_optimizer_switch; +drop table t1, t2; +create table t1 (a int, b int, primary key (a)); +insert into t1 values (1,1), (3,1),(100,1); +create table t2 (a int, b int); +insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0); +select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ; +a b Z +1 1 1 +2 1 0 +NULL 1 NULL +NULL 0 0 +drop table t1, t2; +create table t1 (a int, b int, key(a)); +insert into t1 values +(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); +create table t2 like t1; +insert into t2 select * from t1; +update t2 set b=1; +create table t3 (a int, oref int); +insert into t3 values (1, 1), (NULL,1), (NULL,0); +select a, oref, +t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; +a oref Z +1 1 1 +NULL 1 NULL +NULL 0 0 +explain extended +select a, oref, +t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 +2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 4 100.00 Using where; Full scan on NULL key +2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +Warnings: +Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t3` +drop table t1, t2, t3; +create table t1 (a int NOT NULL, b int NOT NULL, key(a)); +insert into t1 values +(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); +create table t2 like t1; +insert into t2 select * from t1; +update t2 set b=1; +create table t3 (a int, oref int); +insert into t3 values (1, 1), (NULL,1), (NULL,0); +select a, oref, +t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; +a oref Z +1 1 1 +NULL 1 NULL +NULL 0 0 +This must show a trig_cond: +explain extended +select a, oref, +t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 +2 DEPENDENT SUBQUERY t1 ref a a 4 func 2 100.00 Using where; Full scan on NULL key +2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +Warnings: +Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`)))))) AS `Z` from `test`.`t3` +drop table t1,t2,t3; +create table t1 (oref int, grp int); +insert into t1 (oref, grp) values +(1, 1), +(1, 1); +create table t2 (oref int, a int); +insert into t2 values +(1, NULL), +(2, NULL); +select a, oref, +a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2; +a oref Z +NULL 1 NULL +NULL 2 0 +This must show a trig_cond: +explain extended +select a, oref, +a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select count(0) from `test`.`t1` group by `test`.`t1`.`grp` having ((`test`.`t1`.`grp` = `test`.`t2`.`oref`) and trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(count(0)))))))) AS `Z` from `test`.`t2` +drop table t1, t2; +create table t1 (a int, b int, primary key (a)); +insert into t1 values (1,1), (3,1),(100,1); +create table t2 (a int, b int); +insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0); +select a,b, a in (select a from t1 where t1.b = t2.b union select a from +t1 where t1.b = t2.b) Z from t2 ; +a b Z +1 1 1 +2 1 0 +NULL 1 NULL +NULL 0 0 +select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ; +a b Z +1 1 1 +2 1 0 +NULL 1 NULL +NULL 0 0 +drop table t1, t2; +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, b int, oref int); +insert into t2 values (NULL,1, 100), (NULL,2, 100); +create table t1 (a int, b int, c int, key(a,b)); +insert into t1 select 2*A, 2*A, 100 from t3; +explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`))))))) AS `Z` from `test`.`t2` +select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2; +a b oref Z +NULL 1 100 0 +NULL 2 100 NULL +create table t4 (x int); +insert into t4 select A.a + 10*B.a from t1 A, t1 B; +explain extended +select a,b, oref, +(a,b) in (select a,b from t1,t4 where c=t2.oref) Z +from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 2 100.00 Using where; Full scan on NULL key +2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 100 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(select `test`.`t1`.`a`,`test`.`t1`.`b` from `test`.`t1` join `test`.`t4` where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))) AS `Z` from `test`.`t2` +select a,b, oref, +(a,b) in (select a,b from t1,t4 where c=t2.oref) Z +from t2; +a b oref Z +NULL 1 100 0 +NULL 2 100 NULL +drop table t1,t2,t3,t4; +create table t1 (oref char(4), grp int, ie1 int, ie2 int); +insert into t1 (oref, grp, ie1, ie2) values +('aa', 10, 2, 1), +('aa', 10, 1, 1), +('aa', 20, 2, 1), +('bb', 10, 3, 1), +('cc', 10, 4, 2), +('cc', 20, 3, 2), +('ee', 10, 2, 1), +('ee', 10, 1, 2), +('ff', 20, 2, 2), +('ff', 20, 1, 2); +create table t2 (oref char(4), a int, b int); +insert into t2 values +('ee', NULL, 1), +('bb', 2, 1), +('ff', 2, 2), +('cc', 3, NULL), +('bb', NULL, NULL), +('aa', 1, 1), +('dd', 1, NULL); +alter table t1 add index idx(ie1,ie2); +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ; +oref a b Z +cc 3 NULL NULL +insert into t2 values ('new1', 10,10); +insert into t1 values ('new1', 1234, 10, NULL); +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; +oref a b Z +new1 10 10 NULL +explain extended +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 8 100.00 Using where +2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`))))))) AS `Z` from `test`.`t2` where ((`test`.`t2`.`b` = 10) and (`test`.`t2`.`a` = 10)) +drop table t1, t2; +create table t1 (oref char(4), grp int, ie int); +insert into t1 (oref, grp, ie) values +('aa', 10, 2), +('aa', 10, 1), +('aa', 20, NULL), +('bb', 10, 3), +('cc', 10, 4), +('cc', 20, NULL), +('ee', 10, NULL), +('ee', 10, NULL), +('ff', 20, 2), +('ff', 20, 1); +create table t2 (oref char(4), a int); +insert into t2 values +('ee', NULL), +('bb', 2), +('ff', 2), +('cc', 3), +('aa', 1), +('dd', NULL), +('bb', NULL); +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +oref a Z +ee NULL NULL +bb 2 0 +ff 2 1 +cc 3 NULL +aa 1 1 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); +oref a +aa 1 +ff 2 +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); +oref a +bb 2 +dd NULL +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; +oref a Z +ee NULL NULL +bb 2 0 +ff 2 0 +cc 3 NULL +aa 1 1 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where +a in (select min(ie) from t1 where oref=t2.oref group by grp); +oref a +aa 1 +select oref, a from t2 where +a not in (select min(ie) from t1 where oref=t2.oref group by grp); +oref a +bb 2 +ff 2 +dd NULL +update t1 set ie=3 where oref='ff' and ie=1; +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by +grp) Z from t2; +oref a Z +ee NULL NULL +bb 2 0 +ff 2 1 +cc 3 NULL +aa 1 1 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select min(ie) from t1 where +oref=t2.oref group by grp); +oref a +ff 2 +aa 1 +select oref, a from t2 where a not in (select min(ie) from t1 where +oref=t2.oref group by grp); +oref a +bb 2 +dd NULL +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by +grp having min(ie) > 1) Z from t2; +oref a Z +ee NULL 0 +bb 2 0 +ff 2 1 +cc 3 0 +aa 1 0 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select min(ie) from t1 where +oref=t2.oref group by grp having min(ie) > 1); +oref a +ff 2 +select oref, a from t2 where a not in (select min(ie) from t1 where +oref=t2.oref group by grp having min(ie) > 1); +oref a +ee NULL +bb 2 +cc 3 +aa 1 +dd NULL +alter table t1 add index idx(ie); +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +oref a Z +ee NULL NULL +bb 2 0 +ff 2 1 +cc 3 NULL +aa 1 1 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); +oref a +aa 1 +ff 2 +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); +oref a +bb 2 +dd NULL +alter table t1 drop index idx; +alter table t1 add index idx(oref,ie); +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 ref_or_null idx idx 10 test.t2.oref,func 4 Using where; Using index; Full scan on NULL key +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +oref a Z +ee NULL NULL +bb 2 0 +ff 2 1 +cc 3 NULL +aa 1 1 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); +oref a +ff 2 +aa 1 +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); +oref a +bb 2 +dd NULL +explain +select oref, a, +a in (select min(ie) from t1 where oref=t2.oref +group by grp having min(ie) > 1) Z +from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 ref idx idx 5 test.t2.oref 2 Using where; Using temporary; Using filesort +select oref, a, +a in (select min(ie) from t1 where oref=t2.oref +group by grp having min(ie) > 1) Z +from t2; +oref a Z +ee NULL 0 +bb 2 0 +ff 2 1 +cc 3 0 +aa 1 0 +dd NULL 0 +bb NULL NULL +select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref +group by grp having min(ie) > 1); +oref a +ff 2 +select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref +group by grp having min(ie) > 1); +oref a +ee NULL +bb 2 +cc 3 +aa 1 +dd NULL +drop table t1,t2; +create table t1 (oref char(4), grp int, ie1 int, ie2 int); +insert into t1 (oref, grp, ie1, ie2) values +('aa', 10, 2, 1), +('aa', 10, 1, 1), +('aa', 20, 2, 1), +('bb', 10, 3, 1), +('cc', 10, 4, 2), +('cc', 20, 3, 2), +('ee', 10, 2, 1), +('ee', 10, 1, 2), +('ff', 20, 2, 2), +('ff', 20, 1, 2); +create table t2 (oref char(4), a int, b int); +insert into t2 values +('ee', NULL, 1), +('bb', 2, 1), +('ff', 2, 2), +('cc', 3, NULL), +('bb', NULL, NULL), +('aa', 1, 1), +('dd', 1, NULL); +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; +oref a b Z +ee NULL 1 NULL +bb 2 1 0 +ff 2 2 1 +cc 3 NULL NULL +bb NULL NULL NULL +aa 1 1 1 +dd 1 NULL 0 +select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); +oref a b +aa 1 1 +ff 2 2 +select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref); +oref a b +bb 2 1 +dd 1 NULL +select oref, a, b, +(a,b) in (select min(ie1),max(ie2) from t1 +where oref=t2.oref group by grp) Z +from t2; +oref a b Z +ee NULL 1 0 +bb 2 1 0 +ff 2 2 0 +cc 3 NULL NULL +bb NULL NULL NULL +aa 1 1 1 +dd 1 NULL 0 +select oref, a, b from t2 where +(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp); +oref a b +aa 1 1 +select oref, a, b from t2 where +(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp); +oref a b +ee NULL 1 +bb 2 1 +ff 2 2 +dd 1 NULL +alter table t1 add index idx(ie1,ie2); +explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; +oref a b Z +ee NULL 1 NULL +bb 2 1 0 +ff 2 2 1 +cc 3 NULL NULL +bb NULL NULL NULL +aa 1 1 1 +dd 1 NULL 0 +select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); +oref a b +aa 1 1 +ff 2 2 +select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref); +oref a b +bb 2 1 +dd 1 NULL +explain extended +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 100.00 +2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key +Warnings: +Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<expr_cache><`test`.`t2`.`b`,`test`.`t2`.`a`,`test`.`t2`.`oref`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`))))))) AS `Z` from `test`.`t2` +drop table t1,t2; +create table t1 (oref char(4), grp int, ie int primary key); +insert into t1 (oref, grp, ie) values +('aa', 10, 2), +('aa', 10, 1), +('bb', 10, 3), +('cc', 10, 4), +('cc', 20, 5), +('cc', 10, 6); +create table t2 (oref char(4), a int); +insert into t2 values +('ee', NULL), +('bb', 2), +('cc', 5), +('cc', 2), +('cc', NULL), +('aa', 1), +('bb', NULL); +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using where; Full scan on NULL key +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; +oref a Z +ee NULL 0 +bb 2 0 +cc 5 1 +cc 2 0 +cc NULL NULL +aa 1 1 +bb NULL NULL +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); +oref a +aa 1 +cc 5 +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); +oref a +ee NULL +bb 2 +cc 2 +explain +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 7 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 Using where; Using temporary; Using filesort +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; +oref a Z +ee NULL 0 +bb 2 0 +cc 5 1 +cc 2 0 +cc NULL NULL +aa 1 1 +bb NULL NULL +drop table t1,t2; +create table t1 (a int, b int); +insert into t1 values (0,0), (2,2), (3,3); +create table t2 (a int, b int); +insert into t2 values (1,1), (3,3); +select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1; +a b Z +0 0 0 +2 2 0 +3 3 1 +insert into t2 values (NULL,4); +select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1; +a b Z +0 0 0 +2 2 0 +3 3 1 +drop table t1,t2; +CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'), +(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'), +(1,9,'m'); +CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t2 SELECT * FROM t1; +SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) +as test FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT * FROM t1 GROUP by t1.a +HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c +HAVING MAX(t2.b+t1.a) < 10)); +a b c +SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c; +a b c +1 3 c +2 3 h +3 3 j +1 4 d +3 4 i +1 9 m +SELECT a, MAX(b), +(SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) +LIMIT 1) +as cnt, +(SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) +as t_b, +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) +as t_b, +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1) +as t_b +FROM t1 GROUP BY a; +a MAX(b) cnt t_b t_b t_b +1 9 1 9 m m +2 3 1 3 h h +3 4 1 4 i i +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +DROP TABLE t1, t2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (b int, PRIMARY KEY(b)); +INSERT INTO t1 VALUES (1), (NULL), (4); +INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6); +EXPLAIN EXTENDED +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using index +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (not(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t1` where ((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)) having <is_not_null_test>(`test`.`t1`.`a`))))))) +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1)); +a +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4)); +a +1 +4 +DROP TABLE t1,t2; +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int PRIMARY KEY); +CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10)); +INSERT INTO t1 VALUES (2), (NULL), (3), (1); +INSERT INTO t2 VALUES (234), (345), (457); +INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa'); +EXPLAIN +SELECT * FROM t1 +WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 +WHERE t3.name='xxx' AND t2.id=t3.id); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index; Full scan on NULL key +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using index condition(BKA); Using where; Full scan on NULL key; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +SELECT * FROM t1 +WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 +WHERE t3.name='xxx' AND t2.id=t3.id); +id +2 +NULL +3 +1 +SELECT (t1.id IN (SELECT t2.id FROM t2,t3 +WHERE t3.name='xxx' AND t2.id=t3.id)) AS x +FROM t1; +x +0 +0 +0 +0 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a INT NOT NULL); +INSERT INTO t1 VALUES (1),(-1), (65),(66); +CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY); +INSERT INTO t2 VALUES (65),(66); +SELECT a FROM t1 WHERE a NOT IN (65,66); +a +1 +-1 +SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); +a +1 +-1 +EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where +DROP TABLE t1, t2; +set @@optimizer_switch=@save_optimizer_switch; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES(1); +CREATE TABLE t2 (placeholder CHAR(11)); +INSERT INTO t2 VALUES("placeholder"); +SELECT ROW(1, 2) IN (SELECT t1.a, 2) FROM t1 GROUP BY t1.a; +ROW(1, 2) IN (SELECT t1.a, 2) +1 +SELECT ROW(1, 2) IN (SELECT t1.a, 2 FROM t2) FROM t1 GROUP BY t1.a; +ROW(1, 2) IN (SELECT t1.a, 2 FROM t2) +1 +DROP TABLE t1, t2; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2),(3); +CREATE TABLE t2 SELECT * FROM t1; +SELECT 1 FROM t1 WHERE t1.a NOT IN (SELECT 1 FROM t1, t2 WHERE 0); +1 +1 +1 +1 +DROP TABLE t1, t2; +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +select a, (select max(b) from t1) into outfile "subselect.out.file.1" from t1; +delete from t1; +load data infile "subselect.out.file.1" into table t1; +select * from t1; +a b +1 0.123 +drop table t1; +CREATE TABLE t1 ( +pk INT PRIMARY KEY, +int_key INT, +varchar_key VARCHAR(5) UNIQUE, +varchar_nokey VARCHAR(5) +); +INSERT INTO t1 VALUES (9, 7,NULL,NULL), (10,8,'p' ,'p'); +SELECT varchar_nokey +FROM t1 +WHERE NULL NOT IN ( +SELECT INNR.pk FROM t1 AS INNR2 +LEFT JOIN t1 AS INNR ON ( INNR2.int_key = INNR.int_key ) +WHERE INNR.varchar_key > 'n{' +); +varchar_nokey +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1), (2), (11); +# 2nd and 3rd columns should be same +SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1 GROUP BY t1.a; +a ROW(11, 12) = (SELECT a, 22) ROW(11, 12) IN (SELECT a, 22) +1 0 0 +2 0 0 +11 0 0 +SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1 GROUP BY t1.a; +a ROW(11, 12) = (SELECT a, 12) ROW(11, 12) IN (SELECT a, 12) +1 0 0 +2 0 0 +11 1 1 +SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1; +a ROW(11, 12) = (SELECT a, 22) ROW(11, 12) IN (SELECT a, 22) +1 0 0 +2 0 0 +11 0 0 +SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1; +a ROW(11, 12) = (SELECT a, 12) ROW(11, 12) IN (SELECT a, 12) +1 0 0 +2 0 0 +11 1 1 +SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 22), ROW(11, 12) IN (SELECT MAX(x), 22) FROM t1; +x ROW(11, 12) = (SELECT MAX(x), 22) ROW(11, 12) IN (SELECT MAX(x), 22) +1 0 0 +2 0 0 +11 0 0 +# 2nd and 3rd columns should be same for x == 11 only +SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1; +x ROW(11, 12) = (SELECT MAX(x), 12) ROW(11, 12) IN (SELECT MAX(x), 12) +1 0 1 +2 0 1 +11 1 1 +DROP TABLE t1; +# both columns should be same +SELECT ROW(1,2) = (SELECT NULL, NULL), ROW(1,2) IN (SELECT NULL, NULL); +ROW(1,2) = (SELECT NULL, NULL) ROW(1,2) IN (SELECT NULL, NULL) +NULL NULL +SELECT ROW(1,2) = (SELECT 1, NULL), ROW(1,2) IN (SELECT 1, NULL); +ROW(1,2) = (SELECT 1, NULL) ROW(1,2) IN (SELECT 1, NULL) +NULL NULL +SELECT ROW(1,2) = (SELECT NULL, 2), ROW(1,2) IN (SELECT NULL, 2); +ROW(1,2) = (SELECT NULL, 2) ROW(1,2) IN (SELECT NULL, 2) +NULL NULL +SELECT ROW(1,2) = (SELECT NULL, 1), ROW(1,2) IN (SELECT NULL, 1); +ROW(1,2) = (SELECT NULL, 1) ROW(1,2) IN (SELECT NULL, 1) +0 0 +SELECT ROW(1,2) = (SELECT 1, 1), ROW(1,2) IN (SELECT 1, 1); +ROW(1,2) = (SELECT 1, 1) ROW(1,2) IN (SELECT 1, 1) +0 0 +SELECT ROW(1,2) = (SELECT 1, 2), ROW(1,2) IN (SELECT 1, 2); +ROW(1,2) = (SELECT 1, 2) ROW(1,2) IN (SELECT 1, 2) +1 1 +CREATE TABLE t1 (a INT, b INT, c INT); +INSERT INTO t1 VALUES (1,1,1), (1,1,1); +EXPLAIN EXTENDED +SELECT c FROM +( SELECT +(SELECT COUNT(a) FROM +(SELECT COUNT(b) FROM t1) AS x GROUP BY c +) FROM t1 GROUP BY b +) AS y; +ERROR 42S22: Unknown column 'c' in 'field list' +SHOW WARNINGS; +Level Code Message +Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #2 +Note 1276 Field or reference 'test.t1.c' of SELECT #3 was resolved in SELECT #2 +Error 1054 Unknown column 'c' in 'field list' +Note 1003 select `c` AS `c` from (select <expr_cache><count(`test`.`t1`.`a`),`test`.`t1`.`c`>((select count(`test`.`t1`.`a`) from (select count(`test`.`t1`.`b`) AS `COUNT(b)` from `test`.`t1`) `x` group by `t1`.`c`)) AS `(SELECT COUNT(a) FROM +(SELECT COUNT(b) FROM t1) AS x GROUP BY c +)` from `test`.`t1` group by `test`.`t1`.`b`) `y` +DROP TABLE t1; +End of 5.0 tests +# +# BUG#36896: Server crash on SELECT FROM DUAL +# +create table t1 (a int); +select 1 as res from dual where (1) in (select * from t1); +res +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 ( +a int(11) default null, +b int(11) default null, +key (a) +); +insert into t1 select A.a+10*(B.a+10*C.a),A.a+10*(B.a+10*C.a) from t0 A, t0 B, t0 C; +create table t2 (a int(11) default null); +insert into t2 values (0),(1); +create table t3 (a int(11) default null); +insert into t3 values (0),(1); +create table t4 (a int(11) default null); +insert into t4 values (0),(1); +create table t5 (a int(11) default null); +insert into t5 values (0),(1),(0),(1); +select * from t2, t3 +where +t2.a < 10 and +t3.a+1 = 2 and +t3.a in (select t1.b from t1 +where t1.a+1=t1.a+1 and +t1.a < (select t4.a+10 +from t4, t5 limit 2)); +ERROR 21000: Subquery returns more than 1 row +drop table t0, t1, t2, t3, t4, t5; +# +# BUG#48177 - SELECTs with NOT IN subqueries containing NULL +# values return too many records +# +CREATE TABLE t1 ( +i1 int DEFAULT NULL, +i2 int DEFAULT NULL +) ; +INSERT INTO t1 VALUES (1, NULL); +INSERT INTO t1 VALUES (2, 3); +INSERT INTO t1 VALUES (4, NULL); +INSERT INTO t1 VALUES (4, 0); +INSERT INTO t1 VALUES (NULL, NULL); +CREATE TABLE t2 ( +i1 int DEFAULT NULL, +i2 int DEFAULT NULL +) ; +INSERT INTO t2 VALUES (4, NULL); +INSERT INTO t2 VALUES (5, 0); + +Data in t1 +SELECT i1, i2 FROM t1; +i1 i2 +1 NULL +2 3 +4 NULL +4 0 +NULL NULL + +Data in subquery (should be filtered out) +SELECT i1, i2 FROM t2 ORDER BY i1; +i1 i2 +4 NULL +5 0 +FLUSH STATUS; +set @save_optimizer_switch2=@@optimizer_switch; +set optimizer_switch='subquery_cache=off'; + +SELECT i1, i2 +FROM t1 +WHERE (i1, i2) +NOT IN (SELECT i1, i2 FROM t2); +i1 i2 +1 NULL +2 3 + +# Check that the subquery only has to be evaluated once +# for all-NULL values even though there are two (NULL,NULL) records +# Baseline: +SHOW STATUS LIKE '%Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 18 + +INSERT INTO t1 VALUES (NULL, NULL); +FLUSH STATUS; + +SELECT i1, i2 +FROM t1 +WHERE (i1, i2) +NOT IN (SELECT i1, i2 FROM t2); +i1 i2 +1 NULL +2 3 + +# Handler_read_rnd_next should be one more than baseline +# (read record from t1, but do not read from t2) +SHOW STATUS LIKE '%Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 19 +set @@optimizer_switch=@save_optimizer_switch2; +DROP TABLE t1,t2; +End of 5.1 tests +CREATE TABLE t1 ( +a int(11) NOT NULL, +b int(11) NOT NULL, +c datetime default NULL, +PRIMARY KEY (a), +KEY idx_bc (b,c) +); +INSERT INTO t1 VALUES +(406989,67,'2006-02-23 17:08:46'), (150078,67,'2005-10-26 11:17:45'), +(406993,67,'2006-02-27 11:20:57'), (245655,67,'2005-12-08 15:59:08'), +(406994,67,'2006-02-27 11:26:46'), (256,67,NULL), +(398341,67,'2006-02-20 04:48:44'), (254,67,NULL),(1120,67,NULL), +(406988,67,'2006-02-23 17:07:22'), (255,67,NULL), +(398340,67,'2006-02-20 04:38:53'),(406631,67,'2006-02-23 10:49:42'), +(245653,67,'2005-12-08 15:59:07'),(406992,67,'2006-02-24 16:47:18'), +(245654,67,'2005-12-08 15:59:08'),(406995,67,'2006-02-28 11:55:00'), +(127261,67,'2005-10-13 12:17:58'),(406991,67,'2006-02-24 16:42:32'), +(245652,67,'2005-12-08 15:58:27'),(398545,67,'2006-02-20 04:53:13'), +(154504,67,'2005-10-28 11:53:01'),(9199,67,NULL),(1,67,'2006-02-23 15:01:35'), +(223456,67,NULL),(4101,67,NULL),(1133,67,NULL), +(406990,67,'2006-02-23 18:01:45'),(148815,67,'2005-10-25 15:34:17'), +(148812,67,'2005-10-25 15:30:01'),(245651,67,'2005-12-08 15:58:27'), +(154503,67,'2005-10-28 11:52:38'); +create table t11 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 asc; +create table t12 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 desc; +create table t21 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 asc; +create table t22 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 desc; +update t22 set c = '2005-12-08 15:58:27' where a = 255; +explain select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 8 Using temporary; Using filesort +1 PRIMARY t21 hash_ALL NULL #hash#$hj 4 test.t11.a 26 Using where; Using join buffer (flat, BNLH join) +1 PRIMARY t22 hash_ALL NULL #hash#$hj 4 test.t11.a 26 Using where; Using join buffer (incremental, BNLH join) +2 SUBQUERY t11 ALL NULL NULL NULL NULL 8 Using where +2 SUBQUERY t12 hash_ALL NULL #hash#$hj 4 test.t11.a 8 Using where; Using join buffer (flat, BNLH join) +select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; +a b c +256 67 NULL +drop table t1, t11, t12, t21, t22; +create table t1(a int); +insert into t1 values (0),(1); +set @@optimizer_switch='firstmatch=off'; +explain +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY X ALL NULL NULL NULL NULL 2 +2 DEPENDENT SUBQUERY Y ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY subselect3 eq_ref unique_key unique_key 5 func 1 +3 SUBQUERY Z ALL NULL NULL NULL NULL 2 +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +subq +NULL +0 +set @@optimizer_switch=@save_optimizer_switch; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select * from t0; +insert into t1 select a+10 from t0; +set @@optimizer_switch='firstmatch=off,materialization=off'; +insert into t0 values(2); +explain select * from t1 where 2 in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 11 Using where; Start temporary; End temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +select * from t1 where 2 in (select a from t0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +set @@optimizer_switch='default,materialization=off'; +explain select * from t1 where 2 in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 11 Using where; FirstMatch +1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +select * from t1 where 2 in (select a from t0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +set @@optimizer_switch=@save_optimizer_switch; +explain select * from (select a from t0) X where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 +1 PRIMARY subselect3 eq_ref unique_key unique_key 5 func 1 +3 SUBQUERY t1 ALL NULL NULL NULL NULL 20 +2 DERIVED t0 ALL NULL NULL NULL NULL 11 +drop table t0, t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2)); +insert into t1 select A.a+10*(B.a+10*C.a), 0, 0, 'filler' from t0 A, t0 B, t0 C; +insert into t1 select * from t1 where kp1 < 20; +create table t3 (a int); +insert into t3 select A.a + 10*B.a from t0 A, t0 B; +explain select * from t3 where a in (select kp1 from t1 where kp1<20); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using where; Using index +create table t4 (pk int primary key); +insert into t4 select a from t3; +explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20 +and t4.pk=t1.c); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Rowid-ordered scan +2 SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 Using index +drop table t1, t3, t4; +create table t1 (a int) as select * from t0 where a < 5; +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch='firstmatch=off,materialization=off'; +set @@max_heap_table_size= 16384; +explain select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY E ALL NULL NULL NULL NULL 5 Using where; Start temporary +1 PRIMARY A ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +1 PRIMARY B ALL NULL NULL NULL NULL 10 Using join buffer (incremental, BNL join) +1 PRIMARY C ALL NULL NULL NULL NULL 10 Using where; Using join buffer (incremental, BNL join) +1 PRIMARY D hash_ALL NULL #hash#$hj 5 test.E.a 10 Using where; End temporary; Using join buffer (incremental, BNLH join) +flush status; +select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +count(*) +5000 +show status like 'Created_tmp_disk_tables'; +Variable_name Value +Created_tmp_disk_tables 1 +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch=@save_optimizer_switch; +drop table t0, t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 values (1),(2); +create table t3 ( a int , filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, 'filler' from t0 A, t0 B; +explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 +1 PRIMARY t3 ref a a 5 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +select * from t3 where a in (select a from t2); +a filler +1 filler +2 filler +drop table t0, t2, t3; +set @@optimizer_switch='firstmatch=off,materialization=off'; +create table t1 (a date); +insert into t1 values ('2008-01-01'),('2008-01-01'),('2008-02-01'),('2008-02-01'); +create table t2 (a int); +insert into t2 values (1),(2); +create table t3 (a char(10)); +insert into t3 select * from t1; +insert into t3 values (1),(2); +explain select * from t2 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary +1 PRIMARY t1 hash_ALL NULL #hash#$hj 4 test.t2.a 4 Using where; End temporary; Using join buffer (flat, BNLH join) +explain select * from t2 where a in (select a from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary +1 PRIMARY t2 hash_ALL NULL #hash#$hj 5 test.t2.a 2 Using where; End temporary; Using join buffer (flat, BNLH join) +explain select * from t2 where a in (select a from t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY t3 ALL NULL NULL NULL NULL 6 Using where; End temporary; Using join buffer (flat, BNL join) +explain select * from t1 where a in (select a from t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Start temporary +1 PRIMARY t3 ALL NULL NULL NULL NULL 6 Using where; End temporary; Using join buffer (flat, BNL join) +drop table t1, t2, t3; +create table t1 (a decimal); +insert into t1 values (1),(2); +explain select * from t1 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where; Start temporary +1 PRIMARY t1 hash_ALL NULL #hash#$hj 6 test.t1.a 2 Using where; End temporary; Using join buffer (flat, BNLH join) +drop table t1; +set @@optimizer_switch=@save_optimizer_switch; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 as select * from t1; +create table t3 (a int, b int, filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t1 A, t1 B, t1 C; +explain select * from t1, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30) and t1.a =3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +explain select straight_join * from t1 A, t1 B where A.a in (select a from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY A ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +explain select straight_join * from t2 X, t2 Y +where X.a in (select straight_join A.a from t1 A, t1 B); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY X ALL NULL NULL NULL NULL 10 Using where +1 PRIMARY Y ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +2 SUBQUERY A ALL NULL NULL NULL NULL 10 +2 SUBQUERY B ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join) +create table t0 (a int, b int); +insert into t0 values(1,1); +explain select * from t0, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 system NULL NULL NULL NULL 1 +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +create table t4 as select a as x, a as y from t1; +explain select * from t0, t3 where (t3.a, t3.b) in (select x,y from t4) and (t3.a < 10 or t3.a >30); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 system NULL NULL NULL NULL 1 +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref a a 5 test.t4.x 10 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t4 ALL NULL NULL NULL NULL 10 Using where +drop table t0,t1,t2,t3,t4; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, filler char(100), key(a,b)); +insert into t1 select A.a, B.a, 'filler' from t0 A, t0 B; +create table t2 as select * from t1; +explain select * from t2 where a in (select b from t1 where a=3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 100 Using where +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 ref a a 10 const,test.t2.a 8 Using index +explain select * from t2 where (b,a) in (select a,b from t1 where a=3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 100 Using where +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t1 ref a a 10 const,test.t2.a 8 Using index +drop table t1,t2; +create table t1 (a int, b int); +insert into t1 select a,a from t0; +create table t2 (a int, b int); +insert into t2 select A.a + 10*B.a, A.a + 10*B.a from t0 A, t0 B; +set @@optimizer_switch='firstmatch=off'; +explain select * from t1 where (a,b) in (select a,b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 100 +set @save_optimizer_search_depth=@@optimizer_search_depth; +set @@optimizer_search_depth=63; +explain select * from t1 where (a,b) in (select a,b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 10 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 100 +set @@optimizer_search_depth=@save_optimizer_search_depth; +set @@optimizer_switch=@save_optimizer_switch; +drop table t0, t1, t2; +create table t0 (a decimal(4,2)); +insert into t0 values (10.24), (22.11); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 +select * from t0 where a in (select a from t1); +a +10.24 +22.11 +drop table t0, t1; +create table t0(a date); +insert into t0 values ('2008-01-01'),('2008-02-02'); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 4 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 +select * from t0 where a in (select a from t1); +a +2008-01-01 +2008-02-02 +drop table t0, t1; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select a as a, a as b, a as c from t0 where a < 3; +create table t2 as select a as a, a as b from t0 where a < 3; +insert into t2 select * from t2; +explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY subselect2 eq_ref unique_key unique_key 15 func 1 +2 SUBQUERY X ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY Y ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +2 SUBQUERY Z ALL NULL NULL NULL NULL 6 Using join buffer (incremental, BNL join) +drop table t0,t1,t2; + +BUG#37842: Assertion in DsMrr_impl::dsmrr_init, at handler.cc:4307 + +CREATE TABLE t1 ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`int_key` int(11) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `int_key` (`int_key`) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,9),(2,3),(3,8),(4,6),(5,9),(6,5),(7,5),(8,9),(9,1),(10,10); +SELECT `pk` FROM t1 AS OUTR WHERE `int_key` = ALL ( +SELECT `int_key` FROM t1 AS INNR WHERE INNR . `pk` >= 9 +); +pk +DROP TABLE t1; + +BUG#40118 Crash when running Batched Key Access and requiring one match for each key + +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, key(a)); +insert into t1 select * from t0; +alter table t1 add b int not null, add filler char(200); +insert into t1 select * from t1; +insert into t1 select * from t1; +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=6; +select * from t0 where t0.a in (select t1.a from t1 where t1.b=0); +a +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +set join_cache_level=@save_join_cache_level; +drop table t0, t1; +# +# BUG#32665 Query with dependent subquery is too slow +# +create table t1 ( +idIndividual int primary key +); +insert into t1 values (1),(2); +create table t2 ( +idContact int primary key, +contactType int, +idObj int +); +insert into t2 values (1,1,1),(2,2,2),(3,3,3); +create table t3 ( +idAddress int primary key, +idContact int, +postalStripped varchar(100) +); +insert into t3 values (1,1, 'foo'), (2,2,'bar'); +The following must be converted to a semi-join: +explain extended SELECT a.idIndividual FROM t1 a +WHERE a.idIndividual IN +( SELECT c.idObj FROM t3 cona +INNER JOIN t2 c ON c.idContact=cona.idContact +WHERE cona.postalStripped='T2H3B2' + ); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 1.00 +1 PRIMARY a index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) +2 SUBQUERY cona ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY c eq_ref PRIMARY PRIMARY 4 test.cona.idContact 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +Warnings: +Note 1003 select `test`.`a`.`idIndividual` AS `idIndividual` from `test`.`t1` `a` semi join (`test`.`t3` `cona` join `test`.`t2` `c`) where ((`test`.`c`.`idContact` = `test`.`cona`.`idContact`) and (`test`.`a`.`idIndividual` = `test`.`c`.`idObj`) and (`test`.`cona`.`postalStripped` = 'T2H3B2')) +drop table t1,t2,t3; +# +# BUG#47367 Crash in Name_resolution_context::process_error +# +SET SESSION optimizer_switch = 'default,semijoin=off'; +CREATE TABLE t1 (f1 INTEGER); +CREATE TABLE t2 LIKE t1; +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +CALL p1; +f1 +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +CALL p1; +f1 +DROP PROCEDURE p1; +# Restore the original column list of table t2: +ALTER TABLE t2 CHANGE COLUMN my_column f1 INT; +SET SESSION optimizer_switch = 'semijoin=on'; +# Recreate procedure so that we eliminate any caching effects +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +CALL p1; +f1 +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +CALL p1; +ERROR 42S22: Unknown column 'f1' in 'where clause' +DROP PROCEDURE p1; +DROP TABLE t1, t2; +set @@optimizer_switch=@save_optimizer_switch; +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result index 8385ee6f4c0..686840630f1 100644 --- a/mysql-test/r/subselect4.result +++ b/mysql-test/r/subselect4.result @@ -13,9 +13,9 @@ SELECT 1 FROM t1 WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3)) ORDER BY count(*); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 index NULL a 5 NULL 2 Using index; Using temporary +1 PRIMARY t1 index NULL a 5 NULL 2 Using where; Using index; Using temporary 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where -3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table +3 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found # should not crash the next statement SELECT 1 FROM t1 WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3)) @@ -51,7 +51,7 @@ FROM t3 WHERE 1 = 0 GROUP BY 1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 DEPENDENT SUBQUERY t1 index NULL PRIMARY 4 NULL 2 Using index -2 DEPENDENT SUBQUERY t2 index b b 5 NULL 2 Using where; Using index; Using join buffer +2 DEPENDENT SUBQUERY t2 ALL b NULL NULL NULL 2 Range checked for each record (index map: 0x2) # should return 0 rows SELECT (SELECT 1 FROM t1,t2 WHERE t2.b > t3.b) @@ -117,14 +117,14 @@ EXPLAIN SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ); id select_type table type possible_keys key key_len ref rows Extra x PRIMARY x x x x x x x x -x DEPENDENT SUBQUERY x x x x x x x x +x SUBQUERY x x x x x x x x SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ); a b EXPLAIN SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where -2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL; a b 1 NULL @@ -147,28 +147,28 @@ EXPLAIN SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 ); id select_type table type possible_keys key key_len ref rows Extra x PRIMARY x x x x x x x x -x DEPENDENT SUBQUERY x x x x x x x x +x SUBQUERY x x x x x x x x SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 ); a b EXPLAIN SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 ); id select_type table type possible_keys key key_len ref rows Extra x PRIMARY x x x x x x x x -x DEPENDENT SUBQUERY x x x x x x x x +x SUBQUERY x x x x x x x x SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 ); c d EXPLAIN SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 ); id select_type table type possible_keys key key_len ref rows Extra x PRIMARY x x x x x x x x -x DEPENDENT SUBQUERY x x x x x x x x +x SUBQUERY x x x x x x x x SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 ); e f EXPLAIN SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 ); id select_type table type possible_keys key key_len ref rows Extra x PRIMARY x x x x x x x x -x DEPENDENT SUBQUERY x x x x x x x x +x SUBQUERY x x x x x x x x SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 ); c d SELECT * FROM t1 WHERE ( a, b ) NOT IN @@ -199,3 +199,989 @@ DROP TABLE t; # # End of 5.1 tests. # +# +# BUG#46743 "Azalea processing correlated, aggregate SELECT +# subqueries incorrectly" +# +CREATE TABLE t1 (c int); +INSERT INTO t1 VALUES (NULL); +CREATE TABLE t2 (d int , KEY (d)); +INSERT INTO t2 VALUES (NULL),(NULL); +0 rows in subquery +SELECT 1 AS RESULT FROM t2,t1 WHERE d = c; +RESULT +base query +SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ; +RESULT +NULL +EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select <expr_cache><NULL>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1` +first equivalent variant +SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ; +RESULT +NULL +EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select <expr_cache><NULL>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1` group by NULL +second equivalent variant +SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ; +RESULT +NULL +EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select <expr_cache><NULL>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1` group by NULL +DROP TABLE t1,t2; +# +# BUG#45928 "Differing query results depending on MRR and +# engine_condition_pushdown settings" +# +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`time_nokey` time NOT NULL, +`varchar_key` varchar(1) NOT NULL, +`varchar_nokey` varchar(1) NOT NULL, +PRIMARY KEY (`pk`), +KEY `varchar_key` (`varchar_key`) +) AUTO_INCREMENT=12 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (10,'00:00:00','i','i'),(11,'00:00:00','',''); +set @old_optimizer_switch = @@session.optimizer_switch, +@old_optimizer_use_mrr = @@session.optimizer_use_mrr, +@old_engine_condition_pushdown = @@session.engine_condition_pushdown; +SET SESSION OPTIMIZER_SWITCH = 'materialization=off,semijoin=off,loosescan=off,firstmatch=off'; +SET SESSION optimizer_use_mrr = 'force'; +SET SESSION engine_condition_pushdown = 1; +SELECT `time_nokey` G1 FROM t1 WHERE ( `varchar_nokey` , `varchar_key` ) IN ( +SELECT `varchar_nokey` , `varchar_nokey` ) AND `varchar_key` >= 'c' HAVING G1 ORDER +BY `pk` ; +G1 +set @@session.optimizer_switch = @old_optimizer_switch, +@@session.optimizer_use_mrr = @old_optimizer_use_mrr, +@@session.engine_condition_pushdown = @old_engine_condition_pushdown; +DROP TABLE t1; +# +# BUG#45863 "Assertion failed: (fixed == 0), function fix_fields(), +# file item.cc, line 4448" +# +DROP TABLE IF EXISTS C, BB; +CREATE TABLE C ( +varchar_nokey varchar(1) NOT NULL +); +INSERT INTO C VALUES +('k'),('a'),(''),('u'),('e'),('v'),('i'), +('t'),('u'),('f'),('u'),('m'),('j'),('f'), +('v'),('j'),('g'),('e'),('h'),('z'); +CREATE TABLE BB ( +varchar_nokey varchar(1) NOT NULL +); +INSERT INTO BB VALUES ('i'),('t'); +SELECT varchar_nokey FROM C +WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey +FROM BB); +ERROR 21000: Operand should contain 2 column(s) +SELECT varchar_nokey FROM C +WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey, varchar_nokey +FROM BB); +ERROR 42S22: Unknown column 'OUTR' in 'IN/ALL/ANY subquery' +DROP TABLE C,BB; +# +# During work with BUG#45863 I had problems with a query that was +# optimized differently in regular and prepared mode. +# Because there was a bug in one of the selected strategies, I became +# aware of the problem. Adding an EXPLAIN query to catch this. +DROP TABLE IF EXISTS t1, t2, t3; +CREATE TABLE t1 +(EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), +GRADE DECIMAL(4), +CITY CHAR(15)); +CREATE TABLE t2 +(PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), +PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE t3 +(EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, +HOURS DECIMAL(5)); +INSERT INTO t1 VALUES ('E1','Alice',12,'Deale'); +INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO t1 VALUES ('E4','Don',12,'Deale'); +INSERT INTO t1 VALUES ('E5','Ed',13,'Akron'); +INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO t3 VALUES ('E1','P1',40); +INSERT INTO t3 VALUES ('E1','P2',20); +INSERT INTO t3 VALUES ('E1','P3',80); +INSERT INTO t3 VALUES ('E1','P4',20); +INSERT INTO t3 VALUES ('E1','P5',12); +INSERT INTO t3 VALUES ('E1','P6',12); +INSERT INTO t3 VALUES ('E2','P1',40); +INSERT INTO t3 VALUES ('E2','P2',80); +INSERT INTO t3 VALUES ('E3','P2',20); +INSERT INTO t3 VALUES ('E4','P2',20); +INSERT INTO t3 VALUES ('E4','P4',40); +INSERT INTO t3 VALUES ('E4','P5',80); +SET @old_optimizer_switch = @@session.optimizer_switch; +SET @old_join_cache_level = @@session.join_cache_level; +SET SESSION optimizer_switch = 'firstmatch=on,loosescan=on,materialization=on,semijoin=on'; +SET SESSION join_cache_level = 1; +CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM); +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +DROP INDEX t1_IDX ON t1; +CREATE INDEX t1_IDX ON t1(EMPNUM); +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +DROP INDEX t1_IDX ON t1; +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +SET SESSION optimizer_switch = @old_optimizer_switch; +SET SESSION join_cache_level = @old_join_cache_level; +DROP TABLE t1, t2, t3; +# +# BUG#45221 Query SELECT pk FROM C WHERE pk IN (SELECT int_key) failing +# +CREATE TABLE t1 ( +i1_key INT, +i2 INT, +i3 INT, +KEY i1_index (i1_key) +); +INSERT INTO t1 VALUES (9,1,2), (9,2,1); +CREATE TABLE t2 ( +pk INT NOT NULL, +i1 INT, +PRIMARY KEY (pk) +); +INSERT INTO t2 VALUES (9,1); +# Enable Index condition pushdown +SELECT @old_icp:=@@engine_condition_pushdown; +@old_icp:=@@engine_condition_pushdown +# +SET SESSION engine_condition_pushdown = 'ON'; + +SELECT pk +FROM t2 +WHERE +pk IN ( +SELECT i1_key +FROM t1 +WHERE t1.i2 < t1.i3 XOR t2.i1 > 1 +ORDER BY t1.i2 desc); +pk +9 +# Restore old value for Index condition pushdown +SET SESSION engine_condition_pushdown=@old_icp; +DROP TABLE t1,t2; +# +# BUG#45863 "Assertion failed: (fixed == 0), function fix_fields(), +# file item.cc, line 4448" +# +DROP TABLE IF EXISTS C, BB; +CREATE TABLE C ( +varchar_nokey varchar(1) NOT NULL +); +INSERT INTO C VALUES +('k'),('a'),(''),('u'),('e'),('v'),('i'), +('t'),('u'),('f'),('u'),('m'),('j'),('f'), +('v'),('j'),('g'),('e'),('h'),('z'); +CREATE TABLE BB ( +varchar_nokey varchar(1) NOT NULL +); +INSERT INTO BB VALUES ('i'),('t'); +SELECT varchar_nokey FROM C +WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey +FROM BB); +ERROR 21000: Operand should contain 2 column(s) +SELECT varchar_nokey FROM C +WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey, varchar_nokey +FROM BB); +ERROR 42S22: Unknown column 'OUTR' in 'IN/ALL/ANY subquery' +DROP TABLE C,BB; +# +# During work with BUG#45863 I had problems with a query that was +# optimized differently in regular and prepared mode. +# Because there was a bug in one of the selected strategies, I became +# aware of the problem. Adding an EXPLAIN query to catch this. +DROP TABLE IF EXISTS t1, t2, t3; +CREATE TABLE t1 +(EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), +GRADE DECIMAL(4), +CITY CHAR(15)); +CREATE TABLE t2 +(PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), +PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE t3 +(EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, +HOURS DECIMAL(5)); +INSERT INTO t1 VALUES ('E1','Alice',12,'Deale'); +INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO t1 VALUES ('E4','Don',12,'Deale'); +INSERT INTO t1 VALUES ('E5','Ed',13,'Akron'); +INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO t3 VALUES ('E1','P1',40); +INSERT INTO t3 VALUES ('E1','P2',20); +INSERT INTO t3 VALUES ('E1','P3',80); +INSERT INTO t3 VALUES ('E1','P4',20); +INSERT INTO t3 VALUES ('E1','P5',12); +INSERT INTO t3 VALUES ('E1','P6',12); +INSERT INTO t3 VALUES ('E2','P1',40); +INSERT INTO t3 VALUES ('E2','P2',80); +INSERT INTO t3 VALUES ('E3','P2',20); +INSERT INTO t3 VALUES ('E4','P2',20); +INSERT INTO t3 VALUES ('E4','P4',40); +INSERT INTO t3 VALUES ('E4','P5',80); +SET @old_optimizer_switch = @@session.optimizer_switch; +SET @old_join_cache_level = @@session.join_cache_level; +SET SESSION optimizer_switch = 'firstmatch=on,loosescan=on,materialization=on,semijoin=on'; +SET SESSION join_cache_level = 1; +CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM); +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +DROP INDEX t1_IDX ON t1; +CREATE INDEX t1_IDX ON t1(EMPNUM); +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +DROP INDEX t1_IDX ON t1; +EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +PREPARE stmt FROM "EXPLAIN SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN + (SELECT EMPNUM + FROM t3 + WHERE PNUM IN + (SELECT PNUM + FROM t2 + WHERE PTYPE = 'Design'))"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 +1 SIMPLE subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +DEALLOCATE PREPARE stmt; +SET SESSION optimizer_switch = @old_optimizer_switch; +SET SESSION join_cache_level = @old_join_cache_level; +DROP TABLE t1, t2, t3; +# +# BUG#716293: "Range checked for each record" is not used if condition refers to outside of subquery +# +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, b int, `filler` char(200), key(a), key (b)); +insert into t2 +select A.a + 10*B.a + 100 * C.a, A.a + 10*B.a + 100 * C.a, 'filler' from t1 A, t1 B, t1 C; +# The following must use "Range checked for each record" for table B +explain +select a, +(select sum(X.a+B.b) from t1 X, t2 B where B.a=A.a or B.b=A.a) +from t1 A; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY A ALL NULL NULL NULL NULL 10 +2 DEPENDENT SUBQUERY X ALL NULL NULL NULL NULL 10 +2 DEPENDENT SUBQUERY B ALL a,b NULL NULL NULL 1000 Range checked for each record (index map: 0x3) +drop table t1, t2; +# +# BUG#723822: Crash in get_constant_key_infix with EXISTS ( SELECT .. DISTINCT ) +# +CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ; +INSERT INTO t1 VALUES ('8','c'),('5','f'); +ALTER TABLE t1 ADD KEY (f3,f1); +CREATE TABLE t2 ( f4 varchar(1)) ; +INSERT INTO t2 VALUES ('f'),('d'); +SELECT * FROM t2 +WHERE EXISTS ( +SELECT DISTINCT f3 +FROM t1 +WHERE f3 <= t2.f4 +); +f4 +f +d +drop table t1,t2; +# +# LP BUG#718763 Second crash in select_describe() and materialization +# +CREATE TABLE t1 ( f1 int(11), f3 int(11), f10 varchar(1), KEY (f3)) ; +INSERT INTO t1 VALUES ('28','6','m'),('29','4','c'); +CREATE TABLE t2 (f11 varchar(1)) ; +INSERT INTO t2 VALUES ('f'),('d'); +SET @old_optimizer_switch = @@session.optimizer_switch; +SET SESSION optimizer_switch = 'materialization=on'; +EXPLAIN +SELECT * FROM t1 +WHERE f3 = ( +SELECT t1.f3 FROM t1 +WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 )); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT * FROM t1 +WHERE f3 = ( +SELECT t1.f3 FROM t1 +WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 )); +f1 f3 f10 +EXPLAIN +SELECT * FROM t1 +WHERE f3 = ( +SELECT f3 FROM t1 +WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 )); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT * FROM t1 +WHERE f3 = ( +SELECT f3 FROM t1 +WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 )); +f1 f3 f10 +SET SESSION optimizer_switch = @old_optimizer_switch; +drop table t1,t2; +# +# LP BUG#715738: Wrong result with implicit grouping and empty result set +# +CREATE TABLE t1 (f1 int, f2 int); +CREATE TABLE t2 (f3 int, f4 int not null, PRIMARY KEY (f3)); +set @save_optimizer_switch=@@optimizer_switch; +SET @@optimizer_switch = 'materialization=on,semijoin=off'; +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in; +not_in +1 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); +f1 f2 +SET @@optimizer_switch = 'materialization=off,semijoin=off'; +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in; +not_in +1 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); +f1 f2 +INSERT INTO t1 VALUES (1, 2); +INSERT INTO t1 VALUES (3, 4); +INSERT INTO t2 VALUES (5, 6); +INSERT INTO t2 VALUES (7, 8); +SET @@optimizer_switch = 'materialization=on,semijoin=off'; +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in; +not_in +1 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); +f1 f2 +SET @@optimizer_switch = 'materialization=off,semijoin=off'; +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10); +f1 f2 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in; +not_in +1 +EXPLAIN +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan +SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in; +not_in +NULL +EXPLAIN +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row +SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); +f1 f2 +set @@optimizer_switch=@save_optimizer_switch; +drop table t1,t2; +# +# LP BUG#613029 Wrong result with materialization and semijoin, and +# valgrind warnings in Protocol::net_store_data with materialization +# for implicit grouping +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +f2 int(11) NOT NULL, +f3 varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY f2 (f2)); +INSERT INTO t1 VALUES (1,9,'x'); +INSERT INTO t1 VALUES (2,5,'g'); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +f2 int(11) NOT NULL, +f3 varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY f2 (f2)); +INSERT INTO t2 VALUES (1,7,'p'); +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='materialization=off,semijoin=off'; +EXPLAIN +SELECT t1.f3, MAX(t1.f2) +FROM t1, t2 +WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t1 index_subquery f2 f2 4 func 2 Using index +SELECT t1.f3, MAX(t1.f2) +FROM t1, t2 +WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1); +f3 MAX(t1.f2) +NULL NULL +set @@optimizer_switch='materialization=on,semijoin=off'; +EXPLAIN +SELECT t1.f3, MAX(t1.f2) +FROM t1, t2 +WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system PRIMARY NULL NULL NULL 1 +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 SUBQUERY t1 index NULL f2 4 NULL 2 Using index +SELECT t1.f3, MAX(t1.f2) +FROM t1, t2 +WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1); +f3 MAX(t1.f2) +NULL NULL +TODO: add a test case for semijoin when the wrong result is fixed +set @@optimizer_switch='materialization=off,semijoin=on'; +set @@optimizer_switch=@save_optimizer_switch; +drop table t1, t2; diff --git a/mysql-test/r/subselect_cache.result b/mysql-test/r/subselect_cache.result new file mode 100644 index 00000000000..7b9dc3c943f --- /dev/null +++ b/mysql-test/r/subselect_cache.result @@ -0,0 +1,3312 @@ +set optimizer_switch='subquery_cache=on'; +create table t1 (a int, b int); +insert into t1 values (1,2),(3,4),(1,2),(3,4),(3,4),(4,5),(4,5),(5,6),(5,6),(4,5); +create table t2 (c int, d int); +insert into t2 values (2,3),(3,4),(5,6),(4,1); +* +* Test subquery as top item in different clauses +* +#single value subquery test (SELECT list) +flush status; +select a, (select d from t2 where b=c) from t1; +a (select d from t2 where b=c) +1 3 +3 1 +1 3 +3 1 +3 1 +4 6 +4 6 +5 NULL +5 NULL +4 6 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 31 +set optimizer_switch='subquery_cache=off'; +flush status; +select a, (select d from t2 where b=c) from t1; +a (select d from t2 where b=c) +1 3 +3 1 +1 3 +3 1 +3 1 +4 6 +4 6 +5 NULL +5 NULL +4 6 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 61 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (where) +flush status; +select a from t1 where (select d from t2 where b=c); +a +1 +3 +1 +3 +3 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 31 +set optimizer_switch='subquery_cache=off'; +flush status; +select a from t1 where (select d from t2 where b=c); +a +1 +3 +1 +3 +3 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 61 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (having) +flush status; +select a from t1 where a > 0 having (select d from t2 where b=c); +a +1 +3 +1 +3 +3 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 31 +set optimizer_switch='subquery_cache=off'; +flush status; +select a from t1 where a > 0 having (select d from t2 where b=c); +a +1 +3 +1 +3 +3 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 61 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (OUTER JOIN ON) +flush status; +select ta.a, tb.a from t1 ta join t1 tb on (select d from t2 where tb.b=c); +a a +1 1 +3 1 +1 1 +3 1 +3 1 +4 1 +4 1 +5 1 +5 1 +4 1 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 1 +3 1 +1 1 +3 1 +3 1 +4 1 +4 1 +5 1 +5 1 +4 1 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 442 +set optimizer_switch='subquery_cache=off'; +flush status; +select ta.a, tb.a from t1 ta join t1 tb on (select d from t2 where tb.b=c); +a a +1 1 +3 1 +1 1 +3 1 +3 1 +4 1 +4 1 +5 1 +5 1 +4 1 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 1 +3 1 +1 1 +3 1 +3 1 +4 1 +4 1 +5 1 +5 1 +4 1 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 3 +3 3 +1 3 +3 3 +3 3 +4 3 +4 3 +5 3 +5 3 +4 3 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +1 4 +3 4 +1 4 +3 4 +3 4 +4 4 +4 4 +5 4 +5 4 +4 4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 472 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (GROUP BY) +flush status; +select max(a) from t1 GROUP BY (select d from t2 where b=c); +max(a) +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 10 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 17 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 36 +set optimizer_switch='subquery_cache=off'; +flush status; +select max(a) from t1 GROUP BY (select d from t2 where b=c); +max(a) +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 10 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 86 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (distinct GROUP BY) +flush status; +select distinct max(a) from t1 GROUP BY (select d from t2 where b=c); +max(a) +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 10 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 17 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 41 +set optimizer_switch='subquery_cache=off'; +flush status; +select distinct max(a) from t1 GROUP BY (select d from t2 where b=c); +max(a) +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 10 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 91 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (ORDER BY) +flush status; +select a from t1 ORDER BY (select d from t2 where b=c); +a +5 +5 +3 +3 +3 +1 +1 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 31 +set optimizer_switch='subquery_cache=off'; +flush status; +select a from t1 ORDER BY (select d from t2 where b=c); +a +5 +5 +3 +3 +3 +1 +1 +4 +4 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 61 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (distinct ORDER BY) +flush status; +select distinct a from t1 ORDER BY (select d from t2 where b=c); +a +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 7 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 37 +set optimizer_switch='subquery_cache=off'; +flush status; +select distinct a from t1 ORDER BY (select d from t2 where b=c); +a +5 +3 +1 +4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 4 +Handler_read_rnd_next 67 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (LEFT JOIN ON) +flush status; +select ta.a, tb.a from t1 ta left join t1 tb on (select d from t2 where tb.b=c); +a a +1 1 +1 3 +1 1 +1 3 +1 3 +1 4 +1 4 +1 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +1 1 +1 3 +1 1 +1 3 +1 3 +1 4 +1 4 +1 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +5 1 +5 3 +5 1 +5 3 +5 3 +5 4 +5 4 +5 4 +5 1 +5 3 +5 1 +5 3 +5 3 +5 4 +5 4 +5 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 106 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 70 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 141 +set optimizer_switch='subquery_cache=off'; +flush status; +select ta.a, tb.a from t1 ta left join t1 tb on (select d from t2 where tb.b=c); +a a +1 1 +1 3 +1 1 +1 3 +1 3 +1 4 +1 4 +1 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +1 1 +1 3 +1 1 +1 3 +1 3 +1 4 +1 4 +1 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +3 1 +3 3 +3 1 +3 3 +3 3 +3 4 +3 4 +3 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +5 1 +5 3 +5 1 +5 3 +5 3 +5 4 +5 4 +5 4 +5 1 +5 3 +5 1 +5 3 +5 3 +5 4 +5 4 +5 4 +4 1 +4 3 +4 1 +4 3 +4 3 +4 4 +4 4 +4 4 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 671 +set optimizer_switch='subquery_cache=on'; +#single value subquery test (PS) +prepare stmt1 from 'select a, (select d from t2 where b=c) + 1 from t1'; +execute stmt1; +a (select d from t2 where b=c) + 1 +1 4 +3 2 +1 4 +3 2 +3 2 +4 7 +4 7 +5 NULL +5 NULL +4 7 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +execute stmt1; +a (select d from t2 where b=c) + 1 +1 4 +3 2 +1 4 +3 2 +3 2 +4 7 +4 7 +5 NULL +5 NULL +4 7 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 12 +Subquery_cache_miss 8 +deallocate prepare stmt1; +#single value subquery test (SP) +CREATE PROCEDURE p1() select a, (select d from t2 where b=c) + 1 from t1; +call p1; +a (select d from t2 where b=c) + 1 +1 4 +3 2 +1 4 +3 2 +3 2 +4 7 +4 7 +5 NULL +5 NULL +4 7 +call p1; +a (select d from t2 where b=c) + 1 +1 4 +3 2 +1 4 +3 2 +3 2 +4 7 +4 7 +5 NULL +5 NULL +4 7 +drop procedure p1; +#IN subquery test +flush status; +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +select a, b , b in (select d from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 4 +insert into t1 values (7,8),(9,NULL); +select a, b , b in (select d from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +7 8 0 +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 12 +Subquery_cache_miss 10 +insert into t2 values (8,NULL); +select a, b , b in (select d from t2) as SUBS from t1; +a b SUBS +1 2 NULL +3 4 1 +1 2 NULL +3 4 1 +3 4 1 +4 5 NULL +4 5 NULL +5 6 1 +5 6 1 +4 5 NULL +7 8 NULL +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 18 +Subquery_cache_miss 16 +# multicolumn NOT IN with NULLs +flush status; +set optimizer_switch='subquery_cache=off'; +select a, b, (b, a) not in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 1 +3 4 0 +1 2 1 +3 4 0 +3 4 0 +4 5 1 +4 5 1 +5 6 0 +5 6 0 +4 5 1 +7 8 1 +9 NULL 1 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +set optimizer_switch='subquery_cache=on'; +select a, b, (b, a) not in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 1 +3 4 0 +1 2 1 +3 4 0 +3 4 0 +4 5 1 +4 5 1 +5 6 0 +5 6 0 +4 5 1 +7 8 1 +9 NULL 1 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 6 +# multicolumn NOT IN with NULLs (other order) +flush status; +set optimizer_switch='subquery_cache=off'; +select a, b, (a, b) not in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 1 +3 4 1 +1 2 1 +3 4 1 +3 4 1 +4 5 1 +4 5 1 +5 6 1 +5 6 1 +4 5 1 +7 8 NULL +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +set optimizer_switch='subquery_cache=on'; +select a, b, (a, b) not in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 1 +3 4 1 +1 2 1 +3 4 1 +3 4 1 +4 5 1 +4 5 1 +5 6 1 +5 6 1 +4 5 1 +7 8 NULL +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 6 +# multicolumn IN with NULLs +flush status; +set optimizer_switch='subquery_cache=off'; +select a, b, (b, a) in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +7 8 0 +9 NULL 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +set optimizer_switch='subquery_cache=on'; +select a, b, (b, a) in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +7 8 0 +9 NULL 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 6 +# multicolumn IN with NULLs (other order) +flush status; +set optimizer_switch='subquery_cache=off'; +select a, b, (a, b) in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 0 +1 2 0 +3 4 0 +3 4 0 +4 5 0 +4 5 0 +5 6 0 +5 6 0 +4 5 0 +7 8 NULL +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +set optimizer_switch='subquery_cache=on'; +select a, b, (a, b) in (select d, c from t2) as SUBS from t1; +a b SUBS +1 2 0 +3 4 0 +1 2 0 +3 4 0 +3 4 0 +4 5 0 +4 5 0 +5 6 0 +5 6 0 +4 5 0 +7 8 NULL +9 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 6 +#IN subquery test (PS) +delete from t1 where a > 6; +delete from t2 where c > 6; +prepare stmt1 from 'select a, b , b in (select d from t2) as SUBS from t1'; +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 12 +Subquery_cache_miss 10 +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 18 +Subquery_cache_miss 14 +insert into t1 values (7,8),(9,NULL); +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 24 +Subquery_cache_miss 20 +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 30 +Subquery_cache_miss 26 +insert into t2 values (8,NULL); +execute stmt1; +a b SUBS +1 2 NULL +3 4 1 +1 2 NULL +3 4 1 +3 4 1 +4 5 NULL +4 5 NULL +5 6 1 +5 6 1 +4 5 NULL +9 NULL NULL +7 8 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 36 +Subquery_cache_miss 32 +execute stmt1; +a b SUBS +1 2 NULL +3 4 1 +1 2 NULL +3 4 1 +3 4 1 +4 5 NULL +4 5 NULL +5 6 1 +5 6 1 +4 5 NULL +9 NULL NULL +7 8 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 42 +Subquery_cache_miss 38 +deallocate prepare stmt1; +#IN subquery test (SP) +delete from t1 where a > 6; +delete from t2 where c > 6; +CREATE PROCEDURE p1() select a, b , b in (select d from t2) as SUBS from t1; +call p1(); +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 48 +Subquery_cache_miss 42 +call p1(); +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 54 +Subquery_cache_miss 46 +insert into t1 values (7,8),(9,NULL); +call p1(); +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 60 +Subquery_cache_miss 52 +call p1(); +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 66 +Subquery_cache_miss 58 +insert into t2 values (8,NULL); +call p1(); +a b SUBS +1 2 NULL +3 4 1 +1 2 NULL +3 4 1 +3 4 1 +4 5 NULL +4 5 NULL +5 6 1 +5 6 1 +4 5 NULL +9 NULL NULL +7 8 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 72 +Subquery_cache_miss 64 +call p1(); +a b SUBS +1 2 NULL +3 4 1 +1 2 NULL +3 4 1 +3 4 1 +4 5 NULL +4 5 NULL +5 6 1 +5 6 1 +4 5 NULL +9 NULL NULL +7 8 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 78 +Subquery_cache_miss 70 +drop procedure p1; +# test of simple exists +select a, b , exists (select * from t2 where b=d) as SUBS from t1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL 0 +7 8 0 +# test of prepared statement exists +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 84 +Subquery_cache_miss 76 +prepare stmt1 from 'select a, b , exists (select * from t2 where b=d) as SUBS from t1'; +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL 0 +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 90 +Subquery_cache_miss 82 +execute stmt1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL 0 +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 96 +Subquery_cache_miss 88 +deallocate prepare stmt1; +# test of stored procedure exists +CREATE PROCEDURE p1() select a, b , exists (select * from t2 where b=d) as SUBS from t1; +call p1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL 0 +7 8 0 +call p1; +a b SUBS +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 1 +5 6 1 +4 5 0 +9 NULL 0 +7 8 0 +drop procedure p1; +#several subqueries +set optimizer_switch='subquery_cache=off'; +flush status; +select a, b , exists (select * from t2 where b=d) as SUBSE, b in (select d from t2) as SUBSI, (select d from t2 where b=c) SUBSR from t1; +a b SUBSE SUBSI SUBSR +1 2 0 NULL 3 +3 4 1 1 1 +1 2 0 NULL 3 +3 4 1 1 1 +3 4 1 1 1 +4 5 0 NULL 6 +4 5 0 NULL 6 +5 6 1 1 NULL +5 6 1 1 NULL +4 5 0 NULL 6 +9 NULL 0 NULL NULL +7 8 0 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 11 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 145 +set optimizer_switch='subquery_cache=on'; +flush status; +select a, b , exists (select * from t2 where b=d) as SUBSE, b in (select d from t2) as SUBSI, (select d from t2 where b=c) SUBSR from t1; +a b SUBSE SUBSI SUBSR +1 2 0 NULL 3 +3 4 1 1 1 +1 2 0 NULL 3 +3 4 1 1 1 +3 4 1 1 1 +4 5 0 NULL 6 +4 5 0 NULL 6 +5 6 1 1 NULL +5 6 1 1 NULL +4 5 0 NULL 6 +9 NULL 0 NULL NULL +7 8 0 NULL NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 18 +Subquery_cache_miss 18 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 32 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 84 +#several subqueries (several levels) +set optimizer_switch='subquery_cache=off'; +flush status; +set optimizer_switch='subquery_cache=off'; +flush status; +select a, b, (select exists (select * from t2 where b=d) from t2 where b=c) as SUNS1 from t1; +a b SUNS1 +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 NULL +5 6 NULL +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 127 +set optimizer_switch='subquery_cache=on'; +flush status; +select a, b, (select exists (select * from t2 where b=d) from t2 where b=c) as SUNS1 from t1; +a b SUNS1 +1 2 0 +3 4 1 +1 2 0 +3 4 1 +3 4 1 +4 5 0 +4 5 0 +5 6 NULL +5 6 NULL +4 5 0 +9 NULL NULL +7 8 0 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 6 +Subquery_cache_miss 10 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 13 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 69 +#clean up +drop table t1,t2; +test different types +#int +CREATE TABLE t1 ( a int, b int); +INSERT INTO t1 VALUES(1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = 2); +a +1 +3 +DROP TABLE t1; +#char +CREATE TABLE t1 ( a char(1), b char (1)); +INSERT INTO t1 VALUES('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +#decimal +CREATE TABLE t1 ( a decimal(3,1), b decimal(3,1)); +INSERT INTO t1 VALUES(1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = 2); +a +1.0 +3.0 +DROP TABLE t1; +#date +CREATE TABLE t1 ( a date, b date); +INSERT INTO t1 VALUES('1000-01-01','1000-01-01'),('2000-02-01','2000-02-01'),('3000-03-03','3000-03-03'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2000-02-01'); +a +1000-01-01 +3000-03-03 +DROP TABLE t1; +#datetime +CREATE TABLE t1 ( a datetime, b datetime); +INSERT INTO t1 VALUES('1000-01-01 01:01:01','1000-01-01 01:01:01'),('2000-02-02 02:02:02','2000-02-02 02:02:02'),('3000-03-03 03:03:03','3000-03-03 03:03:03'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2000-02-02 02:02:02'); +a +1000-01-01 01:01:01 +3000-03-03 03:03:03 +DROP TABLE t1; +#time +CREATE TABLE t1 ( a time, b time); +INSERT INTO t1 VALUES('01:01:01','01:01:01'),('02:02:02','02:02:02'),('03:03:03','03:03:03'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '02:02:02'); +a +01:01:01 +03:03:03 +DROP TABLE t1; +#timestamp +CREATE TABLE t1 ( a timestamp, b timestamp); +INSERT INTO t1 VALUES('2000-02-02 01:01:01','2000-02-02 01:01:01'),('2000-02-02 02:02:02','2000-02-02 02:02:02'),('2000-02-02 03:03:03','2000-02-02 03:03:03'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2000-02-02 02:02:02'); +a +2000-02-02 01:01:01 +2000-02-02 03:03:03 +DROP TABLE t1; +#bit +CREATE TABLE t1 ( a bit(20), b bit(20)); +INSERT INTO t1 VALUES(1,1),(2,2),(3,3); +SELECT a+0 FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = 2); +a+0 +1 +3 +DROP TABLE t1; +#enum +CREATE TABLE t1 ( a enum('1','2','3'), b enum('1','2','3')); +INSERT INTO t1 VALUES('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +#set +CREATE TABLE t1 ( a set('1','2','3'), b set('1','2','3')); +INSERT INTO t1 VALUES('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +#blob +CREATE TABLE t1 ( a blob, b blob); +INSERT INTO t1 VALUES('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +#geometry +CREATE TABLE t1 ( a geometry, b geometry); +INSERT INTO t1 VALUES(POINT(1,1),POINT(1,1)),(POINT(2,2),POINT(2,2)),(POINT(3,3),POINT(3,3)); +SELECT astext(a) FROM t1 WHERE NOT a IN (SELECT a FROM t1 WHERE b = POINT(2,2)); +astext(a) +POINT(1 1) +POINT(3 3) +DROP TABLE t1; +#uncacheable queries test (random and side effect) +flush status; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2), (4), (1), (3); +select a, a in (select a from t1) from t1 as ext; +a a in (select a from t1) +2 1 +4 1 +1 1 +3 1 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 4 +select a, a in (select a from t1 where -1 < rand()) from t1 as ext; +a a in (select a from t1 where -1 < rand()) +2 1 +4 1 +1 1 +3 1 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 4 +select a, a in (select a from t1 where -1 < benchmark(a,100)) from t1 as ext; +a a in (select a from t1 where -1 < benchmark(a,100)) +2 1 +4 1 +1 1 +3 1 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 4 +drop table t1; +#test of sql_big_tables switch and outer table reference in subquery with grouping +set option sql_big_tables=1; +CREATE TABLE t1 (a INT PRIMARY KEY, b INT); +INSERT INTO t1 VALUES (1,1),(2,1),(3,2),(4,2),(5,3),(6,3); +SELECT (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1) FROM t1 AS t1_outer; +(SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1) +1 +2 +3 +4 +5 +6 +drop table t1; +set option sql_big_tables=0; +#test of function reference to outer query +set local group_concat_max_len=400; +create table t2 (a int, b int); +insert into t2 values (1,1), (2,2); +select b x, (select group_concat(x) from t2) from t2; +x (select group_concat(x) from t2) +1 1,1 +2 2,2 +drop table t2; +set local group_concat_max_len=default; +#aggregate functions +CREATE TABLE t1 (a int, b INT); +CREATE TABLE t2 (c int, d INT); +insert into t1 values (2,1), (3,1), (2,4), (3,4), (10,2), (20,2), (2,5), +(3,5), (100,3), (200,3), (10,6), (20,6), (20,7), (100,8), (200,8); +insert into t2 values (1,1),(3,3),(20,20); +aggregate function as parameter of subquery +set optimizer_switch='subquery_cache=off'; +flush status; +select max(a), (select max(a) from t2 where max(a)=c) from t1 group by b; +max(a) (select max(a) from t2 where max(a)=c) +3 3 +20 20 +200 NULL +3 3 +3 3 +20 20 +20 20 +200 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 15 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 8 +Handler_read_rnd_next 57 +set optimizer_switch='subquery_cache=on'; +flush status; +select max(a), (select max(a) from t2 where max(a)=c) from t1 group by b; +max(a) (select max(a) from t2 where max(a)=c) +3 3 +20 20 +200 NULL +3 3 +3 3 +20 20 +20 20 +200 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 5 +Subquery_cache_miss 3 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 21 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 8 +Handler_read_rnd_next 37 +argument of aggregate function as parameter of subquery (illegal use) +set optimizer_switch='subquery_cache=off'; +flush status; +select max(a), (select a from t2 where a=c) from t1 group by b; +max(a) (select a from t2 where a=c) +3 NULL +20 NULL +200 NULL +3 NULL +3 NULL +20 NULL +20 20 +200 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 15 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 8 +Handler_read_rnd_next 57 +set optimizer_switch='subquery_cache=on'; +flush status; +select max(a), (select a from t2 where a=c) from t1 group by b; +max(a) (select a from t2 where a=c) +3 NULL +20 NULL +200 NULL +3 NULL +3 NULL +20 NULL +20 20 +200 NULL +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 4 +Subquery_cache_miss 4 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 22 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 8 +Handler_read_rnd_next 41 +drop table t1,t2; +#test of flattening subquery optimisations and cache +create table t0 (a int); +insert into t0 values (9),(8),(7),(6),(5),(4),(3),(2),(1),(0); +create table t1(a int, b int); +insert into t1 values +(0,0),(1,1),(2,2),(0,0),(1,1),(2,2),(0,0),(1,1),(2,2),(0,0),(1,1),(2,2),(0,0),(1,1),(2,2); +create table t2 (pk int, a int, primary key(pk)); +insert into t2 select a,a from t0; +set optimizer_switch='default,semijoin=on,materialization=on,subquery_cache=on'; +flush status; +select * from t1 where a in (select pk from t2); +a b +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 15 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 16 +alter table t2 drop primary key; +set optimizer_switch='default,semijoin=off,materialization=off,subquery_cache=off'; +explain select * from t1 where a in (select pk from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 15 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +flush status; +select * from t1 where a in (select pk from t2); +a b +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 0 +Subquery_cache_miss 0 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 151 +set optimizer_switch='default,semijoin=off,materialization=off,subquery_cache=on'; +explain select * from t1 where a in (select pk from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 15 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where +flush status; +select * from t1 where a in (select pk from t2); +a b +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 12 +Subquery_cache_miss 3 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 15 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 43 +set optimizer_switch='default,semijoin=off,materialization=on,subquery_cache=on'; +explain select * from t1 where a in (select pk from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 15 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 +flush status; +select * from t1 where a in (select pk from t2); +a b +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +0 0 +1 1 +2 2 +show status like "subquery_cache%"; +Variable_name Value +Subquery_cache_hit 12 +Subquery_cache_miss 3 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 18 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 27 +drop table t0,t1,t2; +set optimizer_switch='default'; +#launchpad BUG#608834 +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (10,7,8,'01:27:35','v','v'); +INSERT INTO `t2` VALUES (11,1,9,'19:48:31','r','r'); +INSERT INTO `t2` VALUES (12,5,9,'00:00:00','a','a'); +INSERT INTO `t2` VALUES (13,3,186,'19:53:05','m','m'); +INSERT INTO `t2` VALUES (14,6,NULL,'19:18:56','y','y'); +INSERT INTO `t2` VALUES (15,92,2,'10:55:12','j','j'); +INSERT INTO `t2` VALUES (16,7,3,'00:25:00','d','d'); +INSERT INTO `t2` VALUES (17,NULL,0,'12:35:47','z','z'); +INSERT INTO `t2` VALUES (18,3,133,'19:53:03','e','e'); +INSERT INTO `t2` VALUES (19,5,1,'17:53:30','h','h'); +INSERT INTO `t2` VALUES (20,1,8,'11:35:49','b','b'); +INSERT INTO `t2` VALUES (21,2,5,NULL,'s','s'); +INSERT INTO `t2` VALUES (22,NULL,5,'06:01:40','e','e'); +INSERT INTO `t2` VALUES (23,1,8,'05:45:11','j','j'); +INSERT INTO `t2` VALUES (24,0,6,'00:00:00','e','e'); +INSERT INTO `t2` VALUES (25,210,51,'00:00:00','f','f'); +INSERT INTO `t2` VALUES (26,8,4,'06:11:01','v','v'); +INSERT INTO `t2` VALUES (27,7,7,'13:02:46','x','x'); +INSERT INTO `t2` VALUES (28,5,6,'21:44:25','m','m'); +INSERT INTO `t2` VALUES (29,NULL,4,'22:43:58','c','c'); +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,NULL,2,'11:28:45','w','w'); +INSERT INTO `t1` VALUES (2,7,9,'20:25:14','m','m'); +INSERT INTO `t1` VALUES (3,9,3,'13:47:24','m','m'); +INSERT INTO `t1` VALUES (4,7,9,'19:24:11','k','k'); +INSERT INTO `t1` VALUES (5,4,NULL,'15:59:13','r','r'); +INSERT INTO `t1` VALUES (6,2,9,'00:00:00','t','t'); +INSERT INTO `t1` VALUES (7,6,3,'15:15:04','j','j'); +INSERT INTO `t1` VALUES (8,8,8,'11:32:06','u','u'); +INSERT INTO `t1` VALUES (9,NULL,8,'18:32:33','h','h'); +INSERT INTO `t1` VALUES (10,5,53,'15:19:25','o','o'); +INSERT INTO `t1` VALUES (11,NULL,0,'19:03:19',NULL,NULL); +INSERT INTO `t1` VALUES (12,6,5,'00:39:46','k','k'); +INSERT INTO `t1` VALUES (13,188,166,NULL,'e','e'); +INSERT INTO `t1` VALUES (14,2,3,'00:00:00','n','n'); +INSERT INTO `t1` VALUES (15,1,0,'13:12:11','t','t'); +INSERT INTO `t1` VALUES (16,1,1,'04:56:48','c','c'); +INSERT INTO `t1` VALUES (17,0,9,'19:56:05','m','m'); +INSERT INTO `t1` VALUES (18,9,5,'19:35:19','y','y'); +INSERT INTO `t1` VALUES (19,NULL,6,'05:03:03','f','f'); +INSERT INTO `t1` VALUES (20,4,2,'18:38:59','d','d'); +set @@optimizer_switch='subquery_cache=off'; +/* cache is off */ SELECT ( +SELECT 4 +FROM DUAL ) AS field1 , SUM( DISTINCT table1 . `pk` ) AS field2 , ( +SELECT MAX( SUBQUERY2_t1 . `col_int_nokey` ) AS SUBQUERY2_field1 +FROM ( t1 AS SUBQUERY2_t1 INNER JOIN t1 AS SUBQUERY2_t2 ON (SUBQUERY2_t2 . `col_int_key` = SUBQUERY2_t1 . `pk` ) ) +WHERE SUBQUERY2_t2 . `col_varchar_nokey` <= table1 . `col_varchar_key` OR SUBQUERY2_t1 . `col_int_nokey` < table1 . `pk` ) AS field3 , table1 . `col_time_key` AS field4 , table1 . `col_int_key` AS field5 , CONCAT ( table2 . `col_varchar_nokey` , table1 . `col_varchar_key` ) AS field6 +FROM ( t1 AS table1 INNER JOIN ( ( t1 AS table2 LEFT JOIN t2 AS table3 ON (table3 . `col_varchar_key` = table2 . `col_varchar_key` ) ) ) ON (table3 . `col_varchar_key` = table2 . `col_varchar_nokey` ) ) +WHERE ( table2 . `col_varchar_nokey` NOT IN ( +SELECT 'd' UNION +SELECT 'u' ) ) OR table3 . `col_varchar_nokey` <= table1 . `col_varchar_key` +GROUP BY field1, field3, field4, field5, field6 +ORDER BY table1 . `col_int_key` , field1, field2, field3, field4, field5, field6 +; +field1 field2 field3 field4 field5 field6 +4 5 9 15:59:13 NULL cr +4 5 9 15:59:13 NULL dr +4 5 9 15:59:13 NULL er +4 5 9 15:59:13 NULL fr +4 5 9 15:59:13 NULL hr +4 5 9 15:59:13 NULL jr +4 5 9 15:59:13 NULL mr +4 5 9 15:59:13 NULL rr +4 5 9 15:59:13 NULL yr +4 11 9 19:03:19 0 NULL +4 15 9 13:12:11 0 ct +4 15 9 13:12:11 0 dt +4 15 9 13:12:11 0 et +4 15 9 13:12:11 0 ft +4 15 9 13:12:11 0 ht +4 15 9 13:12:11 0 jt +4 15 9 13:12:11 0 mt +4 15 9 13:12:11 0 rt +4 15 9 13:12:11 0 yt +4 16 9 04:56:48 1 cc +4 16 9 04:56:48 1 ec +4 16 9 04:56:48 1 fc +4 16 9 04:56:48 1 hc +4 16 9 04:56:48 1 jc +4 16 9 04:56:48 1 mc +4 16 9 04:56:48 1 rc +4 16 9 04:56:48 1 yc +4 1 9 11:28:45 2 cw +4 1 9 11:28:45 2 dw +4 1 9 11:28:45 2 ew +4 1 9 11:28:45 2 fw +4 1 9 11:28:45 2 hw +4 1 9 11:28:45 2 jw +4 1 9 11:28:45 2 mw +4 1 9 11:28:45 2 rw +4 1 9 11:28:45 2 yw +4 20 9 18:38:59 2 cd +4 20 9 18:38:59 2 dd +4 20 9 18:38:59 2 ed +4 20 9 18:38:59 2 fd +4 20 9 18:38:59 2 hd +4 20 9 18:38:59 2 jd +4 20 9 18:38:59 2 md +4 20 9 18:38:59 2 rd +4 20 9 18:38:59 2 yd +4 3 9 13:47:24 3 cm +4 3 9 13:47:24 3 dm +4 3 9 13:47:24 3 em +4 3 9 13:47:24 3 fm +4 3 9 13:47:24 3 hm +4 3 9 13:47:24 3 jm +4 3 9 13:47:24 3 mm +4 3 9 13:47:24 3 rm +4 3 9 13:47:24 3 ym +4 7 9 15:15:04 3 cj +4 7 9 15:15:04 3 dj +4 7 9 15:15:04 3 ej +4 7 9 15:15:04 3 fj +4 7 9 15:15:04 3 hj +4 7 9 15:15:04 3 jj +4 7 9 15:15:04 3 mj +4 7 9 15:15:04 3 rj +4 7 9 15:15:04 3 yj +4 14 9 00:00:00 3 cn +4 14 9 00:00:00 3 dn +4 14 9 00:00:00 3 en +4 14 9 00:00:00 3 fn +4 14 9 00:00:00 3 hn +4 14 9 00:00:00 3 jn +4 14 9 00:00:00 3 mn +4 14 9 00:00:00 3 rn +4 14 9 00:00:00 3 yn +4 12 9 00:39:46 5 ck +4 12 9 00:39:46 5 dk +4 12 9 00:39:46 5 ek +4 12 9 00:39:46 5 fk +4 12 9 00:39:46 5 hk +4 12 9 00:39:46 5 jk +4 12 9 00:39:46 5 mk +4 12 9 00:39:46 5 rk +4 12 9 00:39:46 5 yk +4 18 9 19:35:19 5 cy +4 18 9 19:35:19 5 dy +4 18 9 19:35:19 5 ey +4 18 9 19:35:19 5 fy +4 18 9 19:35:19 5 hy +4 18 9 19:35:19 5 jy +4 18 9 19:35:19 5 my +4 18 9 19:35:19 5 ry +4 18 9 19:35:19 5 yy +4 19 9 05:03:03 6 cf +4 19 9 05:03:03 6 df +4 19 9 05:03:03 6 ef +4 19 9 05:03:03 6 ff +4 19 9 05:03:03 6 hf +4 19 9 05:03:03 6 jf +4 19 9 05:03:03 6 mf +4 19 9 05:03:03 6 rf +4 19 9 05:03:03 6 yf +4 8 9 11:32:06 8 cu +4 8 9 11:32:06 8 du +4 8 9 11:32:06 8 eu +4 8 9 11:32:06 8 fu +4 8 9 11:32:06 8 hu +4 8 9 11:32:06 8 ju +4 8 9 11:32:06 8 mu +4 8 9 11:32:06 8 ru +4 8 9 11:32:06 8 yu +4 9 8 18:32:33 8 ch +4 9 8 18:32:33 8 dh +4 9 8 18:32:33 8 eh +4 9 8 18:32:33 8 fh +4 9 8 18:32:33 8 hh +4 9 8 18:32:33 8 jh +4 9 8 18:32:33 8 mh +4 9 8 18:32:33 8 rh +4 9 8 18:32:33 8 yh +4 2 9 20:25:14 9 cm +4 2 9 20:25:14 9 dm +4 2 9 20:25:14 9 em +4 2 9 20:25:14 9 fm +4 2 9 20:25:14 9 hm +4 2 9 20:25:14 9 jm +4 2 9 20:25:14 9 mm +4 2 9 20:25:14 9 rm +4 2 9 20:25:14 9 ym +4 4 9 19:24:11 9 ck +4 4 9 19:24:11 9 dk +4 4 9 19:24:11 9 ek +4 4 9 19:24:11 9 fk +4 4 9 19:24:11 9 hk +4 4 9 19:24:11 9 jk +4 4 9 19:24:11 9 mk +4 4 9 19:24:11 9 rk +4 4 9 19:24:11 9 yk +4 6 9 00:00:00 9 ct +4 6 9 00:00:00 9 dt +4 6 9 00:00:00 9 et +4 6 9 00:00:00 9 ft +4 6 9 00:00:00 9 ht +4 6 9 00:00:00 9 jt +4 6 9 00:00:00 9 mt +4 6 9 00:00:00 9 rt +4 6 9 00:00:00 9 yt +4 17 9 19:56:05 9 cm +4 17 9 19:56:05 9 dm +4 17 9 19:56:05 9 em +4 17 9 19:56:05 9 fm +4 17 9 19:56:05 9 hm +4 17 9 19:56:05 9 jm +4 17 9 19:56:05 9 mm +4 17 9 19:56:05 9 rm +4 17 9 19:56:05 9 ym +4 10 9 15:19:25 53 co +4 10 9 15:19:25 53 do +4 10 9 15:19:25 53 eo +4 10 9 15:19:25 53 fo +4 10 9 15:19:25 53 ho +4 10 9 15:19:25 53 jo +4 10 9 15:19:25 53 mo +4 10 9 15:19:25 53 ro +4 10 9 15:19:25 53 yo +4 13 9 NULL 166 ce +4 13 9 NULL 166 de +4 13 9 NULL 166 ee +4 13 9 NULL 166 fe +4 13 9 NULL 166 he +4 13 9 NULL 166 je +4 13 9 NULL 166 me +4 13 9 NULL 166 re +4 13 9 NULL 166 ye +set @@optimizer_switch='subquery_cache=on'; +/* cache is on */ SELECT ( +SELECT 4 +FROM DUAL ) AS field1 , SUM( DISTINCT table1 . `pk` ) AS field2 , ( +SELECT MAX( SUBQUERY2_t1 . `col_int_nokey` ) AS SUBQUERY2_field1 +FROM ( t1 AS SUBQUERY2_t1 INNER JOIN t1 AS SUBQUERY2_t2 ON (SUBQUERY2_t2 . `col_int_key` = SUBQUERY2_t1 . `pk` ) ) +WHERE SUBQUERY2_t2 . `col_varchar_nokey` <= table1 . `col_varchar_key` OR SUBQUERY2_t1 . `col_int_nokey` < table1 . `pk` ) AS field3 , table1 . `col_time_key` AS field4 , table1 . `col_int_key` AS field5 , CONCAT ( table2 . `col_varchar_nokey` , table1 . `col_varchar_key` ) AS field6 +FROM ( t1 AS table1 INNER JOIN ( ( t1 AS table2 LEFT JOIN t2 AS table3 ON (table3 . `col_varchar_key` = table2 . `col_varchar_key` ) ) ) ON (table3 . `col_varchar_key` = table2 . `col_varchar_nokey` ) ) +WHERE ( table2 . `col_varchar_nokey` NOT IN ( +SELECT 'd' UNION +SELECT 'u' ) ) OR table3 . `col_varchar_nokey` <= table1 . `col_varchar_key` +GROUP BY field1, field3, field4, field5, field6 +ORDER BY table1 . `col_int_key` , field1, field2, field3, field4, field5, field6 +; +field1 field2 field3 field4 field5 field6 +4 5 9 15:59:13 NULL cr +4 5 9 15:59:13 NULL dr +4 5 9 15:59:13 NULL er +4 5 9 15:59:13 NULL fr +4 5 9 15:59:13 NULL hr +4 5 9 15:59:13 NULL jr +4 5 9 15:59:13 NULL mr +4 5 9 15:59:13 NULL rr +4 5 9 15:59:13 NULL yr +4 11 9 19:03:19 0 NULL +4 15 9 13:12:11 0 ct +4 15 9 13:12:11 0 dt +4 15 9 13:12:11 0 et +4 15 9 13:12:11 0 ft +4 15 9 13:12:11 0 ht +4 15 9 13:12:11 0 jt +4 15 9 13:12:11 0 mt +4 15 9 13:12:11 0 rt +4 15 9 13:12:11 0 yt +4 16 9 04:56:48 1 cc +4 16 9 04:56:48 1 ec +4 16 9 04:56:48 1 fc +4 16 9 04:56:48 1 hc +4 16 9 04:56:48 1 jc +4 16 9 04:56:48 1 mc +4 16 9 04:56:48 1 rc +4 16 9 04:56:48 1 yc +4 1 9 11:28:45 2 cw +4 1 9 11:28:45 2 dw +4 1 9 11:28:45 2 ew +4 1 9 11:28:45 2 fw +4 1 9 11:28:45 2 hw +4 1 9 11:28:45 2 jw +4 1 9 11:28:45 2 mw +4 1 9 11:28:45 2 rw +4 1 9 11:28:45 2 yw +4 20 9 18:38:59 2 cd +4 20 9 18:38:59 2 dd +4 20 9 18:38:59 2 ed +4 20 9 18:38:59 2 fd +4 20 9 18:38:59 2 hd +4 20 9 18:38:59 2 jd +4 20 9 18:38:59 2 md +4 20 9 18:38:59 2 rd +4 20 9 18:38:59 2 yd +4 3 9 13:47:24 3 cm +4 3 9 13:47:24 3 dm +4 3 9 13:47:24 3 em +4 3 9 13:47:24 3 fm +4 3 9 13:47:24 3 hm +4 3 9 13:47:24 3 jm +4 3 9 13:47:24 3 mm +4 3 9 13:47:24 3 rm +4 3 9 13:47:24 3 ym +4 7 9 15:15:04 3 cj +4 7 9 15:15:04 3 dj +4 7 9 15:15:04 3 ej +4 7 9 15:15:04 3 fj +4 7 9 15:15:04 3 hj +4 7 9 15:15:04 3 jj +4 7 9 15:15:04 3 mj +4 7 9 15:15:04 3 rj +4 7 9 15:15:04 3 yj +4 14 9 00:00:00 3 cn +4 14 9 00:00:00 3 dn +4 14 9 00:00:00 3 en +4 14 9 00:00:00 3 fn +4 14 9 00:00:00 3 hn +4 14 9 00:00:00 3 jn +4 14 9 00:00:00 3 mn +4 14 9 00:00:00 3 rn +4 14 9 00:00:00 3 yn +4 12 9 00:39:46 5 ck +4 12 9 00:39:46 5 dk +4 12 9 00:39:46 5 ek +4 12 9 00:39:46 5 fk +4 12 9 00:39:46 5 hk +4 12 9 00:39:46 5 jk +4 12 9 00:39:46 5 mk +4 12 9 00:39:46 5 rk +4 12 9 00:39:46 5 yk +4 18 9 19:35:19 5 cy +4 18 9 19:35:19 5 dy +4 18 9 19:35:19 5 ey +4 18 9 19:35:19 5 fy +4 18 9 19:35:19 5 hy +4 18 9 19:35:19 5 jy +4 18 9 19:35:19 5 my +4 18 9 19:35:19 5 ry +4 18 9 19:35:19 5 yy +4 19 9 05:03:03 6 cf +4 19 9 05:03:03 6 df +4 19 9 05:03:03 6 ef +4 19 9 05:03:03 6 ff +4 19 9 05:03:03 6 hf +4 19 9 05:03:03 6 jf +4 19 9 05:03:03 6 mf +4 19 9 05:03:03 6 rf +4 19 9 05:03:03 6 yf +4 8 9 11:32:06 8 cu +4 8 9 11:32:06 8 du +4 8 9 11:32:06 8 eu +4 8 9 11:32:06 8 fu +4 8 9 11:32:06 8 hu +4 8 9 11:32:06 8 ju +4 8 9 11:32:06 8 mu +4 8 9 11:32:06 8 ru +4 8 9 11:32:06 8 yu +4 9 8 18:32:33 8 ch +4 9 8 18:32:33 8 dh +4 9 8 18:32:33 8 eh +4 9 8 18:32:33 8 fh +4 9 8 18:32:33 8 hh +4 9 8 18:32:33 8 jh +4 9 8 18:32:33 8 mh +4 9 8 18:32:33 8 rh +4 9 8 18:32:33 8 yh +4 2 9 20:25:14 9 cm +4 2 9 20:25:14 9 dm +4 2 9 20:25:14 9 em +4 2 9 20:25:14 9 fm +4 2 9 20:25:14 9 hm +4 2 9 20:25:14 9 jm +4 2 9 20:25:14 9 mm +4 2 9 20:25:14 9 rm +4 2 9 20:25:14 9 ym +4 4 9 19:24:11 9 ck +4 4 9 19:24:11 9 dk +4 4 9 19:24:11 9 ek +4 4 9 19:24:11 9 fk +4 4 9 19:24:11 9 hk +4 4 9 19:24:11 9 jk +4 4 9 19:24:11 9 mk +4 4 9 19:24:11 9 rk +4 4 9 19:24:11 9 yk +4 6 9 00:00:00 9 ct +4 6 9 00:00:00 9 dt +4 6 9 00:00:00 9 et +4 6 9 00:00:00 9 ft +4 6 9 00:00:00 9 ht +4 6 9 00:00:00 9 jt +4 6 9 00:00:00 9 mt +4 6 9 00:00:00 9 rt +4 6 9 00:00:00 9 yt +4 17 9 19:56:05 9 cm +4 17 9 19:56:05 9 dm +4 17 9 19:56:05 9 em +4 17 9 19:56:05 9 fm +4 17 9 19:56:05 9 hm +4 17 9 19:56:05 9 jm +4 17 9 19:56:05 9 mm +4 17 9 19:56:05 9 rm +4 17 9 19:56:05 9 ym +4 10 9 15:19:25 53 co +4 10 9 15:19:25 53 do +4 10 9 15:19:25 53 eo +4 10 9 15:19:25 53 fo +4 10 9 15:19:25 53 ho +4 10 9 15:19:25 53 jo +4 10 9 15:19:25 53 mo +4 10 9 15:19:25 53 ro +4 10 9 15:19:25 53 yo +4 13 9 NULL 166 ce +4 13 9 NULL 166 de +4 13 9 NULL 166 ee +4 13 9 NULL 166 fe +4 13 9 NULL 166 he +4 13 9 NULL 166 je +4 13 9 NULL 166 me +4 13 9 NULL 166 re +4 13 9 NULL 166 ye +drop table t1,t2; +set @@optimizer_switch= default; +#launchpad BUG#609045 +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_date_key` (`col_date_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,NULL,2,NULL,NULL,'11:28:45','11:28:45','2004-10-11 18:13:16','2004-10-11 18:13:16','w','w'); +INSERT INTO `t1` VALUES (2,7,9,'2001-09-19','2001-09-19','20:25:14','20:25:14',NULL,NULL,'m','m'); +INSERT INTO `t1` VALUES (3,9,3,'2004-09-12','2004-09-12','13:47:24','13:47:24','1900-01-01 00:00:00','1900-01-01 00:00:00','m','m'); +INSERT INTO `t1` VALUES (4,7,9,NULL,NULL,'19:24:11','19:24:11','2009-07-25 00:00:00','2009-07-25 00:00:00','k','k'); +INSERT INTO `t1` VALUES (5,4,NULL,'2002-07-19','2002-07-19','15:59:13','15:59:13',NULL,NULL,'r','r'); +INSERT INTO `t1` VALUES (6,2,9,'2002-12-16','2002-12-16','00:00:00','00:00:00','2008-07-27 00:00:00','2008-07-27 00:00:00','t','t'); +INSERT INTO `t1` VALUES (7,6,3,'2006-02-08','2006-02-08','15:15:04','15:15:04','2002-11-13 16:37:31','2002-11-13 16:37:31','j','j'); +INSERT INTO `t1` VALUES (8,8,8,'2006-08-28','2006-08-28','11:32:06','11:32:06','1900-01-01 00:00:00','1900-01-01 00:00:00','u','u'); +INSERT INTO `t1` VALUES (9,NULL,8,'2001-04-14','2001-04-14','18:32:33','18:32:33','2003-12-10 00:00:00','2003-12-10 00:00:00','h','h'); +INSERT INTO `t1` VALUES (10,5,53,'2000-01-05','2000-01-05','15:19:25','15:19:25','2001-12-21 22:38:22','2001-12-21 22:38:22','o','o'); +INSERT INTO `t1` VALUES (11,NULL,0,'2003-12-06','2003-12-06','19:03:19','19:03:19','2008-12-13 23:16:44','2008-12-13 23:16:44',NULL,NULL); +INSERT INTO `t1` VALUES (12,6,5,'1900-01-01','1900-01-01','00:39:46','00:39:46','2005-08-15 12:39:41','2005-08-15 12:39:41','k','k'); +INSERT INTO `t1` VALUES (13,188,166,'2002-11-27','2002-11-27',NULL,NULL,NULL,NULL,'e','e'); +INSERT INTO `t1` VALUES (14,2,3,NULL,NULL,'00:00:00','00:00:00','2006-09-11 12:06:14','2006-09-11 12:06:14','n','n'); +INSERT INTO `t1` VALUES (15,1,0,'2003-05-27','2003-05-27','13:12:11','13:12:11','2007-12-15 12:39:34','2007-12-15 12:39:34','t','t'); +INSERT INTO `t1` VALUES (16,1,1,'2005-05-03','2005-05-03','04:56:48','04:56:48','2005-08-09 00:00:00','2005-08-09 00:00:00','c','c'); +INSERT INTO `t1` VALUES (17,0,9,'2001-04-18','2001-04-18','19:56:05','19:56:05','2001-09-02 22:50:02','2001-09-02 22:50:02','m','m'); +INSERT INTO `t1` VALUES (18,9,5,'2005-12-27','2005-12-27','19:35:19','19:35:19','2005-12-16 22:58:11','2005-12-16 22:58:11','y','y'); +INSERT INTO `t1` VALUES (19,NULL,6,'2004-08-20','2004-08-20','05:03:03','05:03:03','2007-04-19 00:19:53','2007-04-19 00:19:53','f','f'); +INSERT INTO `t1` VALUES (20,4,2,'1900-01-01','1900-01-01','18:38:59','18:38:59','1900-01-01 00:00:00','1900-01-01 00:00:00','d','d'); +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_date_key` (`col_date_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +); +INSERT INTO `t2` VALUES (10,7,8,NULL,NULL,'01:27:35','01:27:35','2002-02-26 06:14:37','2002-02-26 06:14:37','v','v'); +INSERT INTO `t2` VALUES (11,1,9,'2006-06-14','2006-06-14','19:48:31','19:48:31','1900-01-01 00:00:00','1900-01-01 00:00:00','r','r'); +INSERT INTO `t2` VALUES (12,5,9,'2002-09-12','2002-09-12','00:00:00','00:00:00','2006-12-03 09:37:26','2006-12-03 09:37:26','a','a'); +INSERT INTO `t2` VALUES (13,3,186,'2005-02-15','2005-02-15','19:53:05','19:53:05','2008-05-26 12:27:10','2008-05-26 12:27:10','m','m'); +INSERT INTO `t2` VALUES (14,6,NULL,NULL,NULL,'19:18:56','19:18:56','2004-12-14 16:37:30','2004-12-14 16:37:30','y','y'); +INSERT INTO `t2` VALUES (15,92,2,'2008-11-04','2008-11-04','10:55:12','10:55:12','2003-02-11 21:19:41','2003-02-11 21:19:41','j','j'); +INSERT INTO `t2` VALUES (16,7,3,'2004-09-04','2004-09-04','00:25:00','00:25:00','2009-10-18 02:27:49','2009-10-18 02:27:49','d','d'); +INSERT INTO `t2` VALUES (17,NULL,0,'2006-06-05','2006-06-05','12:35:47','12:35:47','2000-09-26 07:45:57','2000-09-26 07:45:57','z','z'); +INSERT INTO `t2` VALUES (18,3,133,'1900-01-01','1900-01-01','19:53:03','19:53:03',NULL,NULL,'e','e'); +INSERT INTO `t2` VALUES (19,5,1,'1900-01-01','1900-01-01','17:53:30','17:53:30','2005-11-10 12:40:29','2005-11-10 12:40:29','h','h'); +INSERT INTO `t2` VALUES (20,1,8,'1900-01-01','1900-01-01','11:35:49','11:35:49','2009-04-25 00:00:00','2009-04-25 00:00:00','b','b'); +INSERT INTO `t2` VALUES (21,2,5,'2005-01-13','2005-01-13',NULL,NULL,'2002-11-27 00:00:00','2002-11-27 00:00:00','s','s'); +INSERT INTO `t2` VALUES (22,NULL,5,'2006-05-21','2006-05-21','06:01:40','06:01:40','2004-01-26 20:32:32','2004-01-26 20:32:32','e','e'); +INSERT INTO `t2` VALUES (23,1,8,'2003-09-08','2003-09-08','05:45:11','05:45:11','2007-10-26 11:41:40','2007-10-26 11:41:40','j','j'); +INSERT INTO `t2` VALUES (24,0,6,'2006-12-23','2006-12-23','00:00:00','00:00:00','2005-10-07 00:00:00','2005-10-07 00:00:00','e','e'); +INSERT INTO `t2` VALUES (25,210,51,'2006-10-15','2006-10-15','00:00:00','00:00:00','2000-07-15 05:00:34','2000-07-15 05:00:34','f','f'); +INSERT INTO `t2` VALUES (26,8,4,'2005-04-06','2005-04-06','06:11:01','06:11:01','2000-04-03 16:33:32','2000-04-03 16:33:32','v','v'); 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+INSERT INTO `t4` VALUES (84,4,0,NULL,NULL,'00:25:47','00:25:47','2007-10-20 00:00:00','2007-10-20 00:00:00','w','w'); +INSERT INTO `t4` VALUES (85,0,3,'2003-01-26','2003-01-26','08:44:27','08:44:27','2009-09-27 00:00:00','2009-09-27 00:00:00','f','f'); +INSERT INTO `t4` VALUES (86,0,1,'2001-12-19','2001-12-19','08:15:38','08:15:38','2002-07-16 00:00:00','2002-07-16 00:00:00','k','k'); +INSERT INTO `t4` VALUES (87,1,1,'2001-08-07','2001-08-07','19:56:21','19:56:21','2005-02-20 00:00:00','2005-02-20 00:00:00','v','v'); +INSERT INTO `t4` VALUES (88,119,147,'2005-02-16','2005-02-16','00:00:00','00:00:00',NULL,NULL,'c','c'); +INSERT INTO `t4` VALUES (89,1,3,'2006-06-10','2006-06-10','20:50:52','20:50:52','2001-07-16 00:00:00','2001-07-16 00:00:00','y','y'); +INSERT INTO `t4` VALUES (90,7,3,NULL,NULL,'03:54:39','03:54:39','2009-05-20 21:04:12','2009-05-20 21:04:12','h','h'); +INSERT INTO `t4` VALUES (91,2,NULL,'2005-04-06','2005-04-06','23:58:17','23:58:17','2002-03-13 10:55:40','2002-03-13 10:55:40',NULL,NULL); +INSERT INTO `t4` VALUES (92,7,2,'2003-04-27','2003-04-27','12:54:58','12:54:58','2005-07-12 00:00:00','2005-07-12 00:00:00','t','t'); +INSERT INTO `t4` VALUES (93,2,1,'2005-10-13','2005-10-13','04:02:43','04:02:43','2006-07-22 09:46:34','2006-07-22 09:46:34','l','l'); +INSERT INTO `t4` VALUES (94,6,8,'2003-10-02','2003-10-02','11:31:12','11:31:12','2001-09-01 00:00:00','2001-09-01 00:00:00','a','a'); +INSERT INTO `t4` VALUES (95,4,8,'2005-09-09','2005-09-09','20:20:04','20:20:04','2002-05-27 18:38:45','2002-05-27 18:38:45','r','r'); +INSERT INTO `t4` VALUES (96,5,8,NULL,NULL,'00:22:24','00:22:24',NULL,NULL,'s','s'); +INSERT INTO `t4` VALUES (97,7,0,'2006-02-15','2006-02-15','10:09:31','10:09:31',NULL,NULL,'z','z'); +INSERT INTO `t4` VALUES (98,1,1,'1900-01-01','1900-01-01',NULL,NULL,'2009-08-08 22:38:53','2009-08-08 22:38:53','j','j'); +INSERT INTO `t4` VALUES (99,7,8,'2003-12-24','2003-12-24','18:45:35','18:45:35',NULL,NULL,'c','c'); +INSERT INTO `t4` VALUES (100,2,5,'2001-07-26','2001-07-26','11:49:25','11:49:25','2007-04-25 05:08:49','2007-04-25 05:08:49','f','f'); +SET @@optimizer_switch='subquery_cache=off'; +/* cache is off */ SELECT COUNT( DISTINCT table2 .`col_int_key` ) , ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) , table2 .`col_varchar_nokey` field10 +FROM t4 table1 JOIN ( t1 table2 STRAIGHT_JOIN t1 table3 ON table2 .`pk` ) ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +GROUP BY field10 ; +COUNT( DISTINCT table2 .`col_int_key` ) ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) field10 +1 NULL c +1 NULL d +1 NULL e +1 NULL f +1 NULL h +1 NULL j +2 NULL k +2 NULL m +1 NULL n +1 NULL o +0 NULL r +2 NULL t +1 NULL u +1 NULL w +1 NULL y +SET @@optimizer_switch='subquery_cache=on'; +/* cache is on */ SELECT COUNT( DISTINCT table2 .`col_int_key` ) , ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) , table2 .`col_varchar_nokey` field10 +FROM t4 table1 JOIN ( t1 table2 STRAIGHT_JOIN t1 table3 ON table2 .`pk` ) ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +GROUP BY field10 ; +COUNT( DISTINCT table2 .`col_int_key` ) ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) field10 +1 NULL c +1 NULL d +1 NULL e +1 NULL f +1 NULL h +1 NULL j +2 NULL k +2 NULL m +1 NULL n +1 NULL o +0 NULL r +2 NULL t +1 NULL u +1 NULL w +1 NULL y +drop table t1,t2,t3,t4; +set @@optimizer_switch= default; +#launchpad BUG#609045 +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (10,7,8,'v','v'); +INSERT INTO `t2` VALUES (11,1,9,'r','r'); +INSERT INTO `t2` VALUES (12,5,9,'a','a'); +INSERT INTO `t2` VALUES (13,3,186,'m','m'); +INSERT INTO `t2` VALUES (14,6,NULL,'y','y'); +INSERT INTO `t2` VALUES (15,92,2,'j','j'); +INSERT INTO `t2` VALUES (16,7,3,'d','d'); +INSERT INTO `t2` VALUES (17,NULL,0,'z','z'); +INSERT INTO `t2` VALUES (18,3,133,'e','e'); +INSERT INTO `t2` VALUES (19,5,1,'h','h'); +INSERT INTO `t2` VALUES (20,1,8,'b','b'); +INSERT INTO `t2` VALUES (21,2,5,'s','s'); +INSERT INTO `t2` VALUES (22,NULL,5,'e','e'); +INSERT INTO `t2` VALUES (23,1,8,'j','j'); +INSERT INTO `t2` VALUES (24,0,6,'e','e'); +INSERT INTO `t2` VALUES (25,210,51,'f','f'); +INSERT INTO `t2` VALUES (26,8,4,'v','v'); +INSERT INTO `t2` VALUES (27,7,7,'x','x'); +INSERT INTO `t2` VALUES (28,5,6,'m','m'); +INSERT INTO `t2` VALUES (29,NULL,4,'c','c'); +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,NULL,2,'w','w'); +INSERT INTO `t1` VALUES (2,7,9,'m','m'); +INSERT INTO `t1` VALUES (3,9,3,'m','m'); +INSERT INTO `t1` VALUES (4,7,9,'k','k'); +INSERT INTO `t1` VALUES (5,4,NULL,'r','r'); +INSERT INTO `t1` VALUES (6,2,9,'t','t'); +INSERT INTO `t1` VALUES (7,6,3,'j','j'); +INSERT INTO `t1` VALUES (8,8,8,'u','u'); +INSERT INTO `t1` VALUES (9,NULL,8,'h','h'); +INSERT INTO `t1` VALUES (10,5,53,'o','o'); +INSERT INTO `t1` VALUES (11,NULL,0,NULL,NULL); +INSERT INTO `t1` VALUES (12,6,5,'k','k'); +INSERT INTO `t1` VALUES (13,188,166,'e','e'); +INSERT INTO `t1` VALUES (14,2,3,'n','n'); +INSERT INTO `t1` VALUES (15,1,0,'t','t'); +INSERT INTO `t1` VALUES (16,1,1,'c','c'); +INSERT INTO `t1` VALUES (17,0,9,'m','m'); +INSERT INTO `t1` VALUES (18,9,5,'y','y'); +INSERT INTO `t1` VALUES (19,NULL,6,'f','f'); +INSERT INTO `t1` VALUES (20,4,2,'d','d'); +SET @@optimizer_switch = 'subquery_cache=off'; +/* cache is off */ SELECT SUM( DISTINCT table1 .`pk` ) , ( +SELECT MAX( `col_int_nokey` ) +FROM t1 +WHERE table1 .`pk` ) field3 +FROM t1 table1 +JOIN ( +t1 table2 +JOIN t2 table3 +ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +) +ON table3 .`col_varchar_key` = table2 .`col_varchar_nokey` +GROUP BY field3 ; +SUM( DISTINCT table1 .`pk` ) field3 +210 188 +SET @@optimizer_switch = 'subquery_cache=on'; +/* cache is on */ SELECT SUM( DISTINCT table1 .`pk` ) , ( +SELECT MAX( `col_int_nokey` ) +FROM t1 +WHERE table1 .`pk` ) field3 +FROM t1 table1 +JOIN ( +t1 table2 +JOIN t2 table3 +ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +) +ON table3 .`col_varchar_key` = table2 .`col_varchar_nokey` +GROUP BY field3 ; +SUM( DISTINCT table1 .`pk` ) field3 +210 188 +drop table t1,t2; +set @@optimizer_switch= default; +#launchpad BUG#609052 +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (10,7,8,'01:27:35','v','v'); +INSERT INTO `t2` VALUES (11,1,9,'19:48:31','r','r'); +INSERT INTO `t2` VALUES (12,5,9,'00:00:00','a','a'); +INSERT INTO `t2` VALUES (13,3,186,'19:53:05','m','m'); +INSERT INTO `t2` VALUES (14,6,NULL,'19:18:56','y','y'); +INSERT INTO `t2` VALUES (15,92,2,'10:55:12','j','j'); +INSERT INTO `t2` VALUES (16,7,3,'00:25:00','d','d'); +INSERT INTO `t2` VALUES (17,NULL,0,'12:35:47','z','z'); +INSERT INTO `t2` VALUES (18,3,133,'19:53:03','e','e'); +INSERT INTO `t2` VALUES (19,5,1,'17:53:30','h','h'); +INSERT INTO `t2` VALUES (20,1,8,'11:35:49','b','b'); +INSERT INTO `t2` VALUES (21,2,5,NULL,'s','s'); +INSERT INTO `t2` VALUES (22,NULL,5,'06:01:40','e','e'); +INSERT INTO `t2` VALUES (23,1,8,'05:45:11','j','j'); +INSERT INTO `t2` VALUES (24,0,6,'00:00:00','e','e'); +INSERT INTO `t2` VALUES (25,210,51,'00:00:00','f','f'); +INSERT INTO `t2` VALUES (26,8,4,'06:11:01','v','v'); +INSERT INTO `t2` VALUES (27,7,7,'13:02:46','x','x'); +INSERT INTO `t2` VALUES (28,5,6,'21:44:25','m','m'); +INSERT INTO `t2` VALUES (29,NULL,4,'22:43:58','c','c'); +CREATE TABLE `t4` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=101 DEFAULT CHARSET=latin1; +INSERT INTO `t4` VALUES (1,6,NULL,NULL,'r','r'); +INSERT INTO `t4` VALUES (2,8,0,'14:34:45','c','c'); +INSERT INTO `t4` VALUES (3,6,0,'11:49:48','o','o'); +INSERT INTO `t4` VALUES (4,6,7,'18:12:55','c','c'); +INSERT INTO `t4` VALUES (5,3,8,'18:30:05','d','d'); +INSERT INTO `t4` VALUES (6,9,4,'14:19:30','v','v'); +INSERT INTO `t4` VALUES (7,2,6,'05:20:04','m','m'); +INSERT INTO `t4` VALUES (8,1,5,'20:29:31','j','j'); +INSERT INTO `t4` VALUES (9,8,NULL,'07:08:09','f','f'); +INSERT INTO `t4` VALUES (10,0,NULL,'14:49:14','n','n'); +INSERT INTO `t4` VALUES (11,9,8,'00:00:00','z','z'); +INSERT INTO `t4` VALUES (12,8,8,'09:58:06','h','h'); +INSERT INTO `t4` VALUES (13,NULL,8,NULL,'q','q'); +INSERT INTO `t4` VALUES (14,0,1,'18:24:16','w','w'); +INSERT INTO `t4` VALUES (15,5,1,'17:39:57','z','z'); +INSERT INTO `t4` VALUES (16,1,5,'08:23:21','j','j'); +INSERT INTO `t4` VALUES (17,1,2,NULL,'a','a'); +INSERT INTO `t4` VALUES (18,6,7,'21:50:46','m','m'); +INSERT INTO `t4` VALUES (19,6,6,'12:33:17','n','n'); +INSERT INTO `t4` VALUES (20,1,4,'03:06:43','e','e'); +INSERT INTO `t4` VALUES (21,8,7,'03:46:14','u','u'); +INSERT INTO `t4` VALUES (22,1,0,'20:34:52','s','s'); +INSERT INTO `t4` VALUES (23,0,9,NULL,'u','u'); +INSERT INTO `t4` VALUES (24,4,3,'10:41:20','r','r'); +INSERT INTO `t4` VALUES (25,9,5,'08:43:11','g','g'); +INSERT INTO `t4` VALUES (26,8,1,NULL,'o','o'); +INSERT INTO `t4` VALUES (27,5,1,'10:17:51','w','w'); +INSERT INTO `t4` VALUES (28,9,5,'06:34:09','b','b'); +INSERT INTO `t4` VALUES (29,5,9,'21:22:47',NULL,NULL); +INSERT INTO `t4` VALUES (30,NULL,2,'04:02:32','y','y'); +INSERT INTO `t4` VALUES (31,NULL,5,'02:33:14','y','y'); +INSERT INTO `t4` VALUES (32,105,248,'16:32:56','u','u'); +INSERT INTO `t4` VALUES (33,0,0,'21:32:42','p','p'); +INSERT INTO `t4` VALUES (34,3,8,'23:04:47','s','s'); +INSERT INTO `t4` VALUES (35,1,1,'22:05:43','e','e'); +INSERT INTO `t4` VALUES (36,75,255,'02:05:45','d','d'); +INSERT INTO `t4` VALUES (37,9,9,'00:00:00','d','d'); +INSERT INTO `t4` VALUES (38,7,9,'18:09:07','c','c'); +INSERT INTO `t4` VALUES (39,NULL,3,'10:54:06','b','b'); +INSERT INTO `t4` VALUES (40,NULL,9,'23:15:50','t','t'); +INSERT INTO `t4` VALUES (41,4,6,'10:17:40',NULL,NULL); +INSERT INTO `t4` VALUES (42,0,4,'03:37:09','y','y'); +INSERT INTO `t4` VALUES (43,204,60,'22:26:06','c','c'); +INSERT INTO `t4` VALUES (44,0,7,'17:10:38','d','d'); +INSERT INTO `t4` VALUES (45,9,1,'00:00:00','x','x'); +INSERT INTO `t4` VALUES (46,8,6,'17:08:49','p','p'); +INSERT INTO `t4` VALUES (47,7,4,'19:04:40','e','e'); +INSERT INTO `t4` VALUES (48,8,NULL,'20:53:28','g','g'); +INSERT INTO `t4` VALUES (49,NULL,8,'11:46:03','x','x'); +INSERT INTO `t4` VALUES (50,6,0,NULL,'s','s'); +INSERT INTO `t4` VALUES (51,5,8,'10:58:07','e','e'); +INSERT INTO `t4` VALUES (52,2,151,'00:00:00','l','l'); +INSERT INTO `t4` VALUES (53,3,7,'09:43:15','p','p'); +INSERT INTO `t4` VALUES (54,7,6,'21:40:32','h','h'); +INSERT INTO `t4` VALUES (55,NULL,NULL,'00:17:44','m','m'); +INSERT INTO `t4` VALUES (56,145,23,'16:47:26','n','n'); +INSERT INTO `t4` VALUES (57,0,2,'00:00:00','v','v'); +INSERT INTO `t4` VALUES (58,1,4,'05:25:59','b','b'); +INSERT INTO `t4` VALUES (59,7,NULL,'00:00:00','x','x'); +INSERT INTO `t4` VALUES (60,3,NULL,'20:33:04','r','r'); +INSERT INTO `t4` VALUES (61,NULL,77,'00:46:12','t','t'); +INSERT INTO `t4` VALUES (62,2,NULL,'00:00:00','w','w'); +INSERT INTO `t4` VALUES (63,2,NULL,'02:13:59','w','w'); +INSERT INTO `t4` VALUES (64,2,7,'02:54:47','k','k'); +INSERT INTO `t4` VALUES (65,8,1,'18:13:59','a','a'); +INSERT INTO `t4` VALUES (66,6,9,'13:53:08','t','t'); +INSERT INTO `t4` VALUES (67,1,6,'22:21:30','z','z'); +INSERT INTO `t4` VALUES (68,NULL,2,'11:41:50','e','e'); +INSERT INTO `t4` VALUES (69,1,3,'15:20:02','q','q'); +INSERT INTO `t4` VALUES (70,0,0,NULL,'e','e'); +INSERT INTO `t4` VALUES (71,4,NULL,NULL,'v','v'); +INSERT INTO `t4` VALUES (72,1,6,'07:51:52','d','d'); +INSERT INTO `t4` VALUES (73,1,3,'00:00:00','u','u'); +INSERT INTO `t4` VALUES (74,27,195,NULL,'o','o'); +INSERT INTO `t4` VALUES (75,4,5,NULL,'b','b'); +INSERT INTO `t4` VALUES (76,6,2,'12:31:05','c','c'); +INSERT INTO `t4` VALUES (77,2,7,'00:00:00','q','q'); +INSERT INTO `t4` VALUES (78,248,25,'01:16:45',NULL,NULL); +INSERT INTO `t4` VALUES (79,NULL,NULL,'20:38:54','h','h'); +INSERT INTO `t4` VALUES (80,9,0,'00:30:15','d','d'); +INSERT INTO `t4` VALUES (81,75,98,'23:46:36','w','w'); +INSERT INTO `t4` VALUES (82,2,6,'19:03:13','m','m'); +INSERT INTO `t4` VALUES (83,9,5,'10:54:27','i','i'); +INSERT INTO `t4` VALUES (84,4,0,'00:25:47','w','w'); +INSERT INTO `t4` VALUES (85,0,3,'08:44:27','f','f'); +INSERT INTO `t4` VALUES (86,0,1,'08:15:38','k','k'); +INSERT INTO `t4` VALUES (87,1,1,'19:56:21','v','v'); +INSERT INTO `t4` VALUES (88,119,147,'00:00:00','c','c'); +INSERT INTO `t4` VALUES (89,1,3,'20:50:52','y','y'); +INSERT INTO `t4` VALUES (90,7,3,'03:54:39','h','h'); +INSERT INTO `t4` VALUES (91,2,NULL,'23:58:17',NULL,NULL); +INSERT INTO `t4` VALUES (92,7,2,'12:54:58','t','t'); +INSERT INTO `t4` VALUES (93,2,1,'04:02:43','l','l'); +INSERT INTO `t4` VALUES (94,6,8,'11:31:12','a','a'); +INSERT INTO `t4` VALUES (95,4,8,'20:20:04','r','r'); +INSERT INTO `t4` VALUES (96,5,8,'00:22:24','s','s'); +INSERT INTO `t4` VALUES (97,7,0,'10:09:31','z','z'); +INSERT INTO `t4` VALUES (98,1,1,NULL,'j','j'); +INSERT INTO `t4` VALUES (99,7,8,'18:45:35','c','c'); +INSERT INTO `t4` VALUES (100,2,5,'11:49:25','f','f'); +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,NULL,2,'11:28:45','w','w'); +INSERT INTO `t1` VALUES (2,7,9,'20:25:14','m','m'); +INSERT INTO `t1` VALUES (3,9,3,'13:47:24','m','m'); +INSERT INTO `t1` VALUES (4,7,9,'19:24:11','k','k'); +INSERT INTO `t1` VALUES (5,4,NULL,'15:59:13','r','r'); +INSERT INTO `t1` VALUES (6,2,9,'00:00:00','t','t'); +INSERT INTO `t1` VALUES (7,6,3,'15:15:04','j','j'); +INSERT INTO `t1` VALUES (8,8,8,'11:32:06','u','u'); +INSERT INTO `t1` VALUES (9,NULL,8,'18:32:33','h','h'); +INSERT INTO `t1` VALUES (10,5,53,'15:19:25','o','o'); +INSERT INTO `t1` VALUES (11,NULL,0,'19:03:19',NULL,NULL); +INSERT INTO `t1` VALUES (12,6,5,'00:39:46','k','k'); +INSERT INTO `t1` VALUES (13,188,166,NULL,'e','e'); +INSERT INTO `t1` VALUES (14,2,3,'00:00:00','n','n'); +INSERT INTO `t1` VALUES (15,1,0,'13:12:11','t','t'); +INSERT INTO `t1` VALUES (16,1,1,'04:56:48','c','c'); +INSERT INTO `t1` VALUES (17,0,9,'19:56:05','m','m'); +INSERT INTO `t1` VALUES (18,9,5,'19:35:19','y','y'); +INSERT INTO `t1` VALUES (19,NULL,6,'05:03:03','f','f'); +INSERT INTO `t1` VALUES (20,4,2,'18:38:59','d','d'); +CREATE TABLE `t3` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=11 DEFAULT CHARSET=latin1; +INSERT INTO `t3` VALUES (10,8,8,'18:27:58',NULL,NULL); +CREATE TABLE `t5` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1; +INSERT INTO `t5` VALUES (1,1,7,'01:13:38','f','f'); +SET @@optimizer_switch='subquery_cache=off'; +/* cache is off */ SELECT SQL_SMALL_RESULT MAX( DISTINCT table1 . `col_varchar_key` ) AS field1 , MIN( table1 . `col_varchar_nokey` ) AS field2 , COUNT( table1 . `col_varchar_key` ) AS field3 , table2 . `col_time_key` AS field4 , COUNT( DISTINCT table2 . `col_int_key` ) AS field5 , ( +SELECT MAX( SUBQUERY1_t2 . `col_int_nokey` ) AS SUBQUERY1_field1 +FROM ( t3 AS SUBQUERY1_t1 INNER JOIN t1 AS SUBQUERY1_t2 ON (SUBQUERY1_t2 . `col_varchar_key` = SUBQUERY1_t1 . `col_varchar_nokey` ) ) +WHERE SUBQUERY1_t2 . `pk` < SUBQUERY1_t2 . `pk` ) AS field6 , COUNT( table1 . `col_varchar_nokey` ) AS field7 , COUNT( table2 . `pk` ) AS field8 , ( +SELECT MAX( SUBQUERY2_t1 . `col_int_key` ) AS SUBQUERY2_field1 +FROM ( t5 AS SUBQUERY2_t1 LEFT JOIN t2 AS SUBQUERY2_t2 ON (SUBQUERY2_t2 . `col_int_key` = SUBQUERY2_t1 . `col_int_key` ) ) +WHERE SUBQUERY2_t2 . `col_varchar_nokey` != table1 . `col_varchar_key` OR SUBQUERY2_t1 . `col_varchar_nokey` >= 'o' ) AS field9 , CONCAT ( table1 . `col_varchar_key` , table2 . `col_varchar_nokey` ) AS field10 +FROM ( t4 AS table1 LEFT JOIN ( ( t1 AS table2 STRAIGHT_JOIN t1 AS table3 ON (table3 . `col_int_nokey` = table2 . `pk` ) ) ) ON (table3 . `col_varchar_key` = table2 . `col_varchar_key` ) ) +WHERE ( EXISTS ( +SELECT SUBQUERY3_t1 . `pk` AS SUBQUERY3_field1 +FROM ( t4 AS SUBQUERY3_t1 INNER JOIN t4 AS SUBQUERY3_t2 ON (SUBQUERY3_t2 . `col_varchar_key` = SUBQUERY3_t1 . `col_varchar_key` ) ) +WHERE SUBQUERY3_t1 . `col_int_key` > table3 . `pk` AND SUBQUERY3_t1 . `pk` != table3 . `pk` ) ) AND ( table1 . `pk` > 116 AND table1 . `pk` < ( 116 + 175 ) OR table1 . `pk` IN (251) ) OR table1 . `col_int_nokey` = table1 . `col_int_nokey` +GROUP BY field4, field6, field9, field10 +HAVING field10 = 'c' +; +field1 field2 field3 field4 field5 field6 field7 field8 field9 field10 +SET @@optimizer_switch='subquery_cache=on'; +/* cache is on */ SELECT SQL_SMALL_RESULT MAX( DISTINCT table1 . `col_varchar_key` ) AS field1 , MIN( table1 . `col_varchar_nokey` ) AS field2 , COUNT( table1 . `col_varchar_key` ) AS field3 , table2 . `col_time_key` AS field4 , COUNT( DISTINCT table2 . `col_int_key` ) AS field5 , ( +SELECT MAX( SUBQUERY1_t2 . `col_int_nokey` ) AS SUBQUERY1_field1 +FROM ( t3 AS SUBQUERY1_t1 INNER JOIN t1 AS SUBQUERY1_t2 ON (SUBQUERY1_t2 . `col_varchar_key` = SUBQUERY1_t1 . `col_varchar_nokey` ) ) +WHERE SUBQUERY1_t2 . `pk` < SUBQUERY1_t2 . `pk` ) AS field6 , COUNT( table1 . `col_varchar_nokey` ) AS field7 , COUNT( table2 . `pk` ) AS field8 , ( +SELECT MAX( SUBQUERY2_t1 . `col_int_key` ) AS SUBQUERY2_field1 +FROM ( t5 AS SUBQUERY2_t1 LEFT JOIN t2 AS SUBQUERY2_t2 ON (SUBQUERY2_t2 . `col_int_key` = SUBQUERY2_t1 . `col_int_key` ) ) +WHERE SUBQUERY2_t2 . `col_varchar_nokey` != table1 . `col_varchar_key` OR SUBQUERY2_t1 . `col_varchar_nokey` >= 'o' ) AS field9 , CONCAT ( table1 . `col_varchar_key` , table2 . `col_varchar_nokey` ) AS field10 +FROM ( t4 AS table1 LEFT JOIN ( ( t1 AS table2 STRAIGHT_JOIN t1 AS table3 ON (table3 . `col_int_nokey` = table2 . `pk` ) ) ) ON (table3 . `col_varchar_key` = table2 . `col_varchar_key` ) ) +WHERE ( EXISTS ( +SELECT SUBQUERY3_t1 . `pk` AS SUBQUERY3_field1 +FROM ( t4 AS SUBQUERY3_t1 INNER JOIN t4 AS SUBQUERY3_t2 ON (SUBQUERY3_t2 . `col_varchar_key` = SUBQUERY3_t1 . `col_varchar_key` ) ) +WHERE SUBQUERY3_t1 . `col_int_key` > table3 . `pk` AND SUBQUERY3_t1 . `pk` != table3 . `pk` ) ) AND ( table1 . `pk` > 116 AND table1 . `pk` < ( 116 + 175 ) OR table1 . `pk` IN (251) ) OR table1 . `col_int_nokey` = table1 . `col_int_nokey` +GROUP BY field4, field6, field9, field10 +HAVING field10 = 'c' +; +field1 field2 field3 field4 field5 field6 field7 field8 field9 field10 +drop table t1,t2,t3,t4,t5; +set @@optimizer_switch= default; +#launchpad BUG#609043 +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (19,NULL,6,'2004-08-20','2004-08-20','05:03:03','05:03:03','2007-04-19 00:19:53','2007-04-19 00:19:53','f','f'); +INSERT INTO `t1` VALUES (20,4,2,'1900-01-01','1900-01-01','18:38:59','18:38:59','1900-01-01 00:00:00','1900-01-01 00:00:00','d','d'); +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_date_key` (`col_date_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1; +CREATE TABLE `t3` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_date_key` (`col_date_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1; +CREATE TABLE `t4` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_date_key` date DEFAULT NULL, +`col_date_nokey` date DEFAULT NULL, +`col_time_key` time DEFAULT NULL, +`col_time_nokey` time DEFAULT NULL, +`col_datetime_key` datetime DEFAULT NULL, +`col_datetime_nokey` datetime DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_date_key` (`col_date_key`), +KEY `col_time_key` (`col_time_key`), +KEY `col_datetime_key` (`col_datetime_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) ENGINE=MyISAM AUTO_INCREMENT=101 DEFAULT CHARSET=latin1; +INSERT INTO `t4` VALUES (100,2,5,'2001-07-26','2001-07-26','11:49:25','11:49:25','2007-04-25 05:08:49','2007-04-25 05:08:49','f','f'); +SET @@optimizer_switch = 'subquery_cache=off'; +/* cache is off */ SELECT COUNT( DISTINCT table2 .`col_int_key` ) , ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) , table2 .`col_varchar_nokey` field10 +FROM t4 table1 JOIN ( t1 table2 STRAIGHT_JOIN t1 table3 ON table2 .`pk` ) ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +GROUP BY field10 ; +COUNT( DISTINCT table2 .`col_int_key` ) ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) field10 +1 NULL d +1 NULL f +SET @@optimizer_switch = 'subquery_cache=on'; +/* cache is on */ SELECT COUNT( DISTINCT table2 .`col_int_key` ) , ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) , table2 .`col_varchar_nokey` field10 +FROM t4 table1 JOIN ( t1 table2 STRAIGHT_JOIN t1 table3 ON table2 .`pk` ) ON table3 .`col_varchar_key` = table2 .`col_varchar_key` +GROUP BY field10 ; +COUNT( DISTINCT table2 .`col_int_key` ) ( +SELECT SUBQUERY2_t1 .`col_int_key` +FROM t3 SUBQUERY2_t1 JOIN t2 ON SUBQUERY2_t1 .`col_int_key` +WHERE table1 .`col_varchar_key` ) field10 +1 NULL d +1 NULL f +drop table t1,t2,t3,t4; +set @@optimizer_switch= default; +#launchpad BUG#611625 +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`) +) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (1,NULL,'w'); +INSERT INTO `t1` VALUES (2,7,'m'); +INSERT INTO `t1` VALUES (3,9,'m'); +INSERT INTO `t1` VALUES (4,7,'k'); +INSERT INTO `t1` VALUES (5,4,'r'); +INSERT INTO `t1` VALUES (6,2,'t'); +INSERT INTO `t1` VALUES (7,6,'j'); +INSERT INTO `t1` VALUES (8,8,'u'); +INSERT INTO `t1` VALUES (9,NULL,'h'); +INSERT INTO `t1` VALUES (10,5,'o'); +INSERT INTO `t1` VALUES (11,NULL,NULL); +INSERT INTO `t1` VALUES (12,6,'k'); +INSERT INTO `t1` VALUES (13,188,'e'); +INSERT INTO `t1` VALUES (14,2,'n'); +INSERT INTO `t1` VALUES (15,1,'t'); +INSERT INTO `t1` VALUES (16,1,'c'); +INSERT INTO `t1` VALUES (17,0,'m'); +INSERT INTO `t1` VALUES (18,9,'y'); +INSERT INTO `t1` VALUES (19,NULL,'f'); +INSERT INTO `t1` VALUES (20,4,'d'); +CREATE TABLE `t3` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`) +) ENGINE=MyISAM AUTO_INCREMENT=101 DEFAULT CHARSET=latin1; +INSERT INTO `t3` VALUES (1,6,'r'); +INSERT INTO `t3` VALUES (2,8,'c'); +INSERT INTO `t3` VALUES (3,6,'o'); +INSERT INTO `t3` VALUES (4,6,'c'); +INSERT INTO `t3` VALUES (5,3,'d'); +INSERT INTO `t3` VALUES (6,9,'v'); +INSERT INTO `t3` VALUES (7,2,'m'); +INSERT INTO `t3` VALUES (8,1,'j'); +INSERT INTO `t3` VALUES (9,8,'f'); +INSERT INTO `t3` VALUES (10,0,'n'); +INSERT INTO `t3` VALUES (11,9,'z'); +INSERT INTO `t3` VALUES (12,8,'h'); +INSERT INTO `t3` VALUES (13,NULL,'q'); +INSERT INTO `t3` VALUES (14,0,'w'); +INSERT INTO `t3` VALUES (15,5,'z'); +INSERT INTO `t3` VALUES (16,1,'j'); +INSERT INTO `t3` VALUES (17,1,'a'); +INSERT INTO `t3` VALUES (18,6,'m'); +INSERT INTO `t3` VALUES (19,6,'n'); +INSERT INTO `t3` VALUES (20,1,'e'); +INSERT INTO `t3` VALUES (21,8,'u'); +INSERT INTO `t3` VALUES (22,1,'s'); +INSERT INTO `t3` VALUES (23,0,'u'); +INSERT INTO `t3` VALUES (24,4,'r'); +INSERT INTO `t3` VALUES (25,9,'g'); +INSERT INTO `t3` VALUES (26,8,'o'); +INSERT INTO `t3` VALUES (27,5,'w'); +INSERT INTO `t3` VALUES (28,9,'b'); +INSERT INTO `t3` VALUES (29,5,NULL); +INSERT INTO `t3` VALUES (30,NULL,'y'); +INSERT INTO `t3` VALUES (31,NULL,'y'); +INSERT INTO `t3` VALUES (32,105,'u'); +INSERT INTO `t3` VALUES (33,0,'p'); +INSERT INTO `t3` VALUES (34,3,'s'); +INSERT INTO `t3` VALUES (35,1,'e'); +INSERT INTO `t3` VALUES (36,75,'d'); +INSERT INTO `t3` VALUES (37,9,'d'); +INSERT INTO `t3` VALUES (38,7,'c'); +INSERT INTO `t3` VALUES (39,NULL,'b'); +INSERT INTO `t3` VALUES (40,NULL,'t'); +INSERT INTO `t3` VALUES (41,4,NULL); +INSERT INTO `t3` VALUES (42,0,'y'); +INSERT INTO `t3` VALUES (43,204,'c'); +INSERT INTO `t3` VALUES (44,0,'d'); +INSERT INTO `t3` VALUES (45,9,'x'); +INSERT INTO `t3` VALUES (46,8,'p'); +INSERT INTO `t3` VALUES (47,7,'e'); +INSERT INTO `t3` VALUES (48,8,'g'); +INSERT INTO `t3` VALUES (49,NULL,'x'); +INSERT INTO `t3` VALUES (50,6,'s'); +INSERT INTO `t3` VALUES (51,5,'e'); +INSERT INTO `t3` VALUES (52,2,'l'); +INSERT INTO `t3` VALUES (53,3,'p'); +INSERT INTO `t3` VALUES (54,7,'h'); +INSERT INTO `t3` VALUES (55,NULL,'m'); +INSERT INTO `t3` VALUES (56,145,'n'); +INSERT INTO `t3` VALUES (57,0,'v'); +INSERT INTO `t3` VALUES (58,1,'b'); +INSERT INTO `t3` VALUES (59,7,'x'); +INSERT INTO `t3` VALUES (60,3,'r'); +INSERT INTO `t3` VALUES (61,NULL,'t'); +INSERT INTO `t3` VALUES (62,2,'w'); +INSERT INTO `t3` VALUES (63,2,'w'); +INSERT INTO `t3` VALUES (64,2,'k'); +INSERT INTO `t3` VALUES (65,8,'a'); +INSERT INTO `t3` VALUES (66,6,'t'); +INSERT INTO `t3` VALUES (67,1,'z'); +INSERT INTO `t3` VALUES (68,NULL,'e'); +INSERT INTO `t3` VALUES (69,1,'q'); +INSERT INTO `t3` VALUES (70,0,'e'); +INSERT INTO `t3` VALUES (71,4,'v'); +INSERT INTO `t3` VALUES (72,1,'d'); +INSERT INTO `t3` VALUES (73,1,'u'); +INSERT INTO `t3` VALUES (74,27,'o'); +INSERT INTO `t3` VALUES (75,4,'b'); +INSERT INTO `t3` VALUES (76,6,'c'); +INSERT INTO `t3` VALUES (77,2,'q'); +INSERT INTO `t3` VALUES (78,248,NULL); +INSERT INTO `t3` VALUES (79,NULL,'h'); +INSERT INTO `t3` VALUES (80,9,'d'); +INSERT INTO `t3` VALUES (81,75,'w'); +INSERT INTO `t3` VALUES (82,2,'m'); +INSERT INTO `t3` VALUES (83,9,'i'); +INSERT INTO `t3` VALUES (84,4,'w'); +INSERT INTO `t3` VALUES (85,0,'f'); +INSERT INTO `t3` VALUES (86,0,'k'); +INSERT INTO `t3` VALUES (87,1,'v'); +INSERT INTO `t3` VALUES (88,119,'c'); +INSERT INTO `t3` VALUES (89,1,'y'); +INSERT INTO `t3` VALUES (90,7,'h'); +INSERT INTO `t3` VALUES (91,2,NULL); +INSERT INTO `t3` VALUES (92,7,'t'); +INSERT INTO `t3` VALUES (93,2,'l'); +INSERT INTO `t3` VALUES (94,6,'a'); +INSERT INTO `t3` VALUES (95,4,'r'); +INSERT INTO `t3` VALUES (96,5,'s'); +INSERT INTO `t3` VALUES (97,7,'z'); +INSERT INTO `t3` VALUES (98,1,'j'); +INSERT INTO `t3` VALUES (99,7,'c'); +INSERT INTO `t3` VALUES (100,2,'f'); +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`) +) ENGINE=MyISAM AUTO_INCREMENT=11 DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (10,8,NULL); +set optimizer_switch='subquery_cache=off'; +SELECT ( +SELECT `col_int_nokey` +FROM t3 +WHERE table1 .`col_varchar_nokey` ) field13 +FROM t2 table1 JOIN t1 table2 ON table2 .`pk` +ORDER BY field13; +field13 +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +set optimizer_switch='subquery_cache=on'; +SELECT +(SELECT `col_int_nokey` + FROM t3 +WHERE table1 .`col_varchar_nokey` ) field13 +FROM t2 table1 JOIN t1 table2 ON table2 .`pk` +ORDER BY field13; +field13 +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +NULL +drop table t1,t2,t3; +set @@optimizer_switch= default; +# LP BUG#615760 (part 1: double transformation) +create table t1 (a int); +insert into t1 values (1),(2); +create table t2 (b int); +insert into t2 values (1),(2); +set optimizer_switch='default,semijoin=off,materialization=off,subquery_cache=on'; +explain extended +select * from t1 where a in (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` where (<cache>(`test`.`t1`.`a`) = `test`.`t2`.`b`)))) +drop table t1,t2; +set @@optimizer_switch= default; +# LP BUG#615760 (part 2: incorrect heap table index flags) +SET SESSION optimizer_switch = 'index_merge=off,index_merge_union=off,index_merge_sort_union=off,index_merge_intersection=off,index_condition_pushdown=off,firstmatch=off,loosescan=off,materialization=off,semijoin=off,partial_match_rowid_merge=off,partial_match_table_scan=off,subquery_cache=on'; +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) AUTO_INCREMENT=30 DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (10,7,8,'v','v'); +INSERT INTO `t1` VALUES (11,1,9,'r','r'); +INSERT INTO `t1` VALUES (12,5,9,'a','a'); +INSERT INTO `t1` VALUES (13,3,186,'m','m'); +INSERT INTO `t1` VALUES (14,6,NULL,'y','y'); +INSERT INTO `t1` VALUES (15,92,2,'j','j'); +INSERT INTO `t1` VALUES (16,7,3,'d','d'); +INSERT INTO `t1` VALUES (17,NULL,0,'z','z'); +INSERT INTO `t1` VALUES (18,3,133,'e','e'); +INSERT INTO `t1` VALUES (19,5,1,'h','h'); +INSERT INTO `t1` VALUES (20,1,8,'b','b'); +INSERT INTO `t1` VALUES (21,2,5,'s','s'); +INSERT INTO `t1` VALUES (22,NULL,5,'e','e'); +INSERT INTO `t1` VALUES (23,1,8,'j','j'); +INSERT INTO `t1` VALUES (24,0,6,'e','e'); +INSERT INTO `t1` VALUES (25,210,51,'f','f'); +INSERT INTO `t1` VALUES (26,8,4,'v','v'); +INSERT INTO `t1` VALUES (27,7,7,'x','x'); +INSERT INTO `t1` VALUES (28,5,6,'m','m'); +INSERT INTO `t1` VALUES (29,NULL,4,'c','c'); +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_int_nokey` int(11) DEFAULT NULL, +`col_int_key` int(11) DEFAULT NULL, +`col_varchar_key` varchar(1) DEFAULT NULL, +`col_varchar_nokey` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_int_key` (`col_int_key`), +KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`) +) AUTO_INCREMENT=21 DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (1,NULL,2,'w','w'); +INSERT INTO `t2` VALUES (2,7,9,'m','m'); +INSERT INTO `t2` VALUES (3,9,3,'m','m'); +INSERT INTO `t2` VALUES (4,7,9,'k','k'); +INSERT INTO `t2` VALUES (5,4,NULL,'r','r'); +INSERT INTO `t2` VALUES (6,2,9,'t','t'); +INSERT INTO `t2` VALUES (7,6,3,'j','j'); +INSERT INTO `t2` VALUES (8,8,8,'u','u'); +INSERT INTO `t2` VALUES (9,NULL,8,'h','h'); +INSERT INTO `t2` VALUES (10,5,53,'o','o'); +INSERT INTO `t2` VALUES (11,NULL,0,NULL,NULL); +INSERT INTO `t2` VALUES (12,6,5,'k','k'); +INSERT INTO `t2` VALUES (13,188,166,'e','e'); +INSERT INTO `t2` VALUES (14,2,3,'n','n'); +INSERT INTO `t2` VALUES (15,1,0,'t','t'); +INSERT INTO `t2` VALUES (16,1,1,'c','c'); +INSERT INTO `t2` VALUES (17,0,9,'m','m'); +INSERT INTO `t2` VALUES (18,9,5,'y','y'); +INSERT INTO `t2` VALUES (19,NULL,6,'f','f'); +INSERT INTO `t2` VALUES (20,4,2,'d','d'); +SELECT table1 .`col_varchar_nokey` +FROM t2 table1 RIGHT JOIN t1 LEFT JOIN ( +SELECT SUBQUERY1_t2 .* +FROM t1 SUBQUERY1_t1 LEFT JOIN t2 SUBQUERY1_t2 ON SUBQUERY1_t2 .`col_int_key` = SUBQUERY1_t1 .`col_int_nokey` ) table3 STRAIGHT_JOIN ( ( +SELECT * +FROM t1 ) table4 JOIN ( t1 table5 JOIN t2 table6 ON table5 .`pk` ) ON table5 .`col_varchar_nokey` ) ON table6 .`pk` = table5 .`col_int_key` ON table5 .`col_varchar_nokey` ON table5 .`col_varchar_key` +WHERE table3 .`col_varchar_key` IN ( +SELECT `col_varchar_key` +FROM t2 ) AND table1 .`col_varchar_key` OR table1 .`pk` ; +col_varchar_nokey +drop table t1,t2; +set @@optimizer_switch= default; +# LP BUG#615378 (incorrect NULL result returning in Item_cache) +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_varchar_key` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_varchar_key` (`col_varchar_key`) +) DEFAULT CHARSET=latin1; +INSERT INTO `t1` VALUES (10,'v'); +INSERT INTO `t1` VALUES (11,'r'); +CREATE TABLE `t2` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_varchar_key` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_varchar_key` (`col_varchar_key`) +) DEFAULT CHARSET=latin1; +INSERT INTO `t2` VALUES (1,'r'); +INSERT INTO `t2` VALUES (2,'c'); +CREATE TABLE `t3` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`col_varchar_key` varchar(1) DEFAULT NULL, +PRIMARY KEY (`pk`), +KEY `col_varchar_key` (`col_varchar_key`) +) DEFAULT CHARSET=latin1; +INSERT INTO `t3` VALUES (1,'w'); +SELECT SUM( DISTINCT table2 . `pk` ) AS field2 , +(SELECT SUM( SUBQUERY1_t2 . `pk` ) AS SUBQUERY1_field1 +FROM t2 AS SUBQUERY1_t2 STRAIGHT_JOIN +t3 AS SUBQUERY1_t3 ON (SUBQUERY1_t3 . `pk` = SUBQUERY1_t2 . `pk` ) +WHERE table1 . `col_varchar_key` ) AS field3 +FROM ( t1 AS table1 LEFT JOIN +( t2 AS table2 STRAIGHT_JOIN +t3 AS table3 ON (table3 . `pk` = table2 . `pk` ) ) +ON (table3 . `col_varchar_key` = table1 . `col_varchar_key` ) ) +WHERE ( table1 . `pk` < 5 ) OR ( table1 . `col_varchar_key` IS NOT NULL) +GROUP BY field3 +HAVING (field3 <= 'h' AND field2 != 4) ; +field2 field3 +drop tables t1, t2, t3; diff --git a/mysql-test/r/subselect_mat.result b/mysql-test/r/subselect_mat.result new file mode 100644 index 00000000000..7b7c2fe3a59 --- /dev/null +++ b/mysql-test/r/subselect_mat.result @@ -0,0 +1,1434 @@ +drop table if exists t1, t2, t3, t1i, t2i, t3i; +drop view if exists v1, v2, v1m, v2m; +create table t1 (a1 char(8), a2 char(8)); +create table t2 (b1 char(8), b2 char(8)); +create table t3 (c1 char(8), c2 char(8)); +insert into t1 values ('1 - 00', '2 - 00'); +insert into t1 values ('1 - 01', '2 - 01'); +insert into t1 values ('1 - 02', '2 - 02'); +insert into t2 values ('1 - 01', '2 - 01'); +insert into t2 values ('1 - 01', '2 - 01'); +insert into t2 values ('1 - 02', '2 - 02'); +insert into t2 values ('1 - 02', '2 - 02'); +insert into t2 values ('1 - 03', '2 - 03'); +insert into t3 values ('1 - 01', '2 - 01'); +insert into t3 values ('1 - 02', '2 - 02'); +insert into t3 values ('1 - 03', '2 - 03'); +insert into t3 values ('1 - 04', '2 - 04'); +create table t1i (a1 char(8), a2 char(8)); +create table t2i (b1 char(8), b2 char(8)); +create table t3i (c1 char(8), c2 char(8)); +create index it1i1 on t1i (a1); +create index it1i2 on t1i (a2); +create index it1i3 on t1i (a1, a2); +create index it2i1 on t2i (b1); +create index it2i2 on t2i (b2); +create index it2i3 on t2i (b1, b2); +create index it3i1 on t3i (c1); +create index it3i2 on t3i (c2); +create index it3i3 on t3i (c1, c2); +insert into t1i select * from t1; +insert into t2i select * from t2; +insert into t3i select * from t3; +set @@optimizer_switch='semijoin=off'; +/****************************************************************************** +* Simple tests. +******************************************************************************/ +# non-indexed nullable fields +explain extended +select * from t1 where a1 in (select b1 from t2 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`)))))) +select * from t1 where a1 in (select b1 from t2 where b1 > '0'); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`)))))) +select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) +select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`min(b2)`)))))) +select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where a1 in (select b1 from t2i where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i index it2i1,it2i3 it2i1 9 NULL 5 100.00 Using where; Using index +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`)))))) +select * from t1i where a1 in (select b1 from t2i where b1 > '0'); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i range it2i1,it2i3 it2i1 9 NULL 3 100.00 Using where; Using index for group-by +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`)))))) +select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i index it2i1,it2i3 it2i3 18 NULL 5 100.00 Using where; Using index +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) +select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0'); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) +select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`min(b2)`)))))) +select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`max(b2)`)))))) +select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)"; +execute st1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by +execute st1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by +prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)"; +execute st2; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +execute st2; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`min(b2)`)))))) +select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +set @@optimizer_switch='default,semijoin=off'; +prepare st1 from +"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)"; +set @@optimizer_switch='default,materialization=off'; +execute st1; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +set @@optimizer_switch='default,semijoin=off'; +execute st1; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +set @@optimizer_switch='default,materialization=off'; +prepare st1 from +"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)"; +set @@optimizer_switch='default,semijoin=off'; +execute st1; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +set @@optimizer_switch='default,materialization=off'; +execute st1; +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +set @@optimizer_switch='default,semijoin=off'; +explain extended +select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) +select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +2 SUBQUERY t2i index NULL it2i3 18 NULL 5 100.00 Using index +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) +select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +/****************************************************************************** +* Views, UNIONs, several levels of nesting. +******************************************************************************/ +# materialize the result of subquery over temp-table view +create algorithm=merge view v1 as +select b1, c2 from t2, t3 where b2 > c2; +create algorithm=merge view v2 as +select b1, c2 from t2, t3 group by b2, c2; +Warnings: +Warning 1354 View merge algorithm can't be used here for now (assumed undefined algorithm) +create algorithm=temptable view v1m as +select b1, c2 from t2, t3 where b2 > c2; +create algorithm=temptable view v2m as +select b1, c2 from t2, t3 group by b2, c2; +select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null); +b1 c2 +1 - 02 2 - 01 +1 - 02 2 - 01 +1 - 03 2 - 01 +1 - 03 2 - 02 +select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null); +b1 c2 +1 - 02 2 - 01 +1 - 02 2 - 01 +1 - 03 2 - 01 +1 - 03 2 - 02 +select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null); +b1 c2 +1 - 02 2 - 01 +1 - 02 2 - 01 +1 - 03 2 - 01 +1 - 03 2 - 02 +select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null); +b1 c2 +1 - 02 2 - 01 +1 - 02 2 - 01 +1 - 03 2 - 01 +1 - 03 2 - 02 +drop view v1, v2, v1m, v2m; +explain extended +select * from t1 +where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +4 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`))))))) +select * from t1 +where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1i +where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and +(a1, a2) in (select c1, c2 from t3i +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +3 SUBQUERY t3i index NULL it3i3 18 NULL 4 100.00 Using where; Using index +4 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 SUBQUERY t2i index it2i1,it2i3 it2i3 18 NULL 5 100.00 Using where; Using index +Warnings: +Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3i`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`c2`))))))) +select * from t1i +where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and +(a1, a2) in (select c1, c2 from t3i +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 where c2 LIKE '%02') or +b2 in (select c2 from t3 where c2 LIKE '%03')) and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +5 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`))))))) +select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 where c2 LIKE '%02') or +b2 in (select c2 from t3 where c2 LIKE '%03')) and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +a1 a2 +1 - 02 2 - 02 +explain extended +select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 t3a where c1 = a1) or +b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and +(a1, a2) in (select c1, c2 from t3 t3c +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +5 SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where +6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where +3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select 1 from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),(`test`.`t3c`.`c1`,`test`.`t3c`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3c`.`c1` in <temporary table> on distinct_key where ((`test`.`t3c`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3c`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`))))))) +select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 t3a where c1 = a1) or +b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and +(a1, a2) in (select c1, c2 from t3 t3c +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +(select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 where c2 LIKE '%02') or +b2 in (select c2 from t3 where c2 LIKE '%03') +group by b1, b2) and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0'))) +UNION +(select * from t1i +where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and +(a1, a2) in (select c1, c2 from t3i +where (c1, c2) in (select b1, b2 from t2i where b2 > '0'))); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +5 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary; Using filesort +4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +7 UNION t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index +9 SUBQUERY t3i index NULL it3i3 18 NULL 4 100.00 Using where; Using index +10 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +8 SUBQUERY t2i index it2i1,it2i3 it2i3 18 NULL 5 100.00 Using where; Using index +NULL UNION RESULT <union1,7> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`)))))))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a2`,`test`.`t1i`.`a1`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c2`,`test`.`t3i`.`c1`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3i`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1i`.`a2` = `materialized subselect`.`c2`)))))))) +(select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 where c2 LIKE '%02') or +b2 in (select c2 from t3 where c2 LIKE '%03') +group by b1, b2) and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0'))) +UNION +(select * from t1i +where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and +(a1, a2) in (select c1, c2 from t3i +where (c1, c2) in (select b1, b2 from t2i where b2 > '0'))); +a1 a2 +1 - 02 2 - 02 +1 - 01 2 - 01 +explain extended +select * from t1 +where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +5 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `materialized subselect`.`c1`) and (`test`.`t1`.`a2` = `materialized subselect`.`c2`))))))) +select * from t1 +where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and +(a1, a2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); +a1 a2 +1 - 01 2 - 01 +1 - 02 2 - 02 +explain extended +select * from t1, t3 +where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and +(c1, c2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and +a1 = c1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join) +4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +5 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`c1` = `test`.`t1`.`a1`) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c2`,`test`.`t3`.`c1`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`b1`) and (`test`.`t3`.`c2` = `materialized subselect`.`b2`)))))) ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `materialized subselect`.`c1`) and (`test`.`t3`.`c2` = `materialized subselect`.`c2`))))))) +select * from t1, t3 +where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and +(c1, c2) in (select c1, c2 from t3 +where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and +a1 = c1; +a1 a2 c1 c2 +1 - 01 2 - 01 1 - 01 2 - 01 +1 - 02 2 - 02 1 - 02 2 - 02 +/****************************************************************************** +* Negative tests, where materialization should not be applied. +******************************************************************************/ +# UNION in a subquery +explain extended +select * from t3 +where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`>(<in_optimizer>(`test`.`t3`.`c1`,<exists>(select 1 from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t3`.`c1`) = `test`.`t1`.`a1`)) union select 1 from `test`.`t2` where ((`test`.`t2`.`b1` < '9') and (<cache>(`test`.`t3`.`c1`) = `test`.`t2`.`b1`))))) +select * from t3 +where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9'); +c1 c2 +1 - 01 2 - 01 +1 - 02 2 - 02 +1 - 03 2 - 03 +explain extended +select * from t1 +where (a1, a2) in (select b1, b2 from t2 +where b2 in (select c2 from t3 t3a where c1 = a1) or +b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and +(a1, a2) in (select c1, c2 from t3 t3c +where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +5 DEPENDENT SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where +6 DEPENDENT SUBQUERY t2i index_subquery it2i1,it2i2,it2i3 it2i3 18 func,func 2 100.00 Using index; Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where +3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(select 1 from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `materialized subselect`.`c2`))))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))))) and <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where (<expr_cache><`test`.`t3c`.`c2`,`test`.`t3c`.`c1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),<exists>(<index_lookup>(<cache>(`test`.`t3c`.`c1`) in t2i on it2i3 where (((`test`.`t2i`.`b2` > '0') or (`test`.`t2i`.`b2` = `test`.`t1`.`a2`)) and (<cache>(`test`.`t3c`.`c1`) = `test`.`t2i`.`b1`) and (<cache>(`test`.`t3c`.`c2`) = `test`.`t2i`.`b2`)))))) and (<cache>(`test`.`t1`.`a1`) = `test`.`t3c`.`c1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t3c`.`c2`)))))) +explain extended +select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having ((<cache>(`test`.`t1`.`a1`) = '1 - 01') and (<cache>(`test`.`t1`.`a2`) = '2 - 01'))))) +select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01'); +a1 a2 +1 - 01 2 - 01 +explain extended +select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a2`,`test`.`t1`.`a1`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having ((<cache>(`test`.`t1`.`a1`) = '1 - 01') and (<cache>(`test`.`t1`.`a2`) = '2 - 01'))))) +select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual); +a1 a2 +1 - 01 2 - 01 +/****************************************************************************** +* Subqueries in other uncovered clauses. +******************************************************************************/ +/* SELECT clause */ +select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1; +((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL +0 +0 +0 +/* GROUP BY clause */ +create table columns (col int key); +insert into columns values (1), (2); +explain extended +select * from t1 group by (select col from columns limit 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +2 SUBQUERY columns index NULL PRIMARY 4 NULL 2 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by (select `test`.`columns`.`col` from `test`.`columns` limit 1) +select * from t1 group by (select col from columns limit 1); +a1 a2 +1 - 00 2 - 00 +explain extended +select * from t1 group by (a1 in (select col from columns)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort +2 DEPENDENT SUBQUERY columns unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`a1`) in columns on PRIMARY where trigcond((<cache>(`test`.`t1`.`a1`) = `test`.`columns`.`col`)))))) +select * from t1 group by (a1 in (select col from columns)); +a1 a2 +1 - 00 2 - 00 +/* ORDER BY clause */ +explain extended +select * from t1 order by (select col from columns limit 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +2 SUBQUERY columns index NULL PRIMARY 4 NULL 2 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` order by (select `test`.`columns`.`col` from `test`.`columns` limit 1) +select * from t1 order by (select col from columns limit 1); +a1 a2 +1 - 00 2 - 00 +1 - 01 2 - 01 +1 - 02 2 - 02 +/****************************************************************************** +* Column types/sizes that affect materialization. +******************************************************************************/ +/* +Test that BLOBs are not materialized (except when arguments of some functions). +*/ +# force materialization to be always considered +set @@optimizer_switch='semijoin=off'; +set @prefix_len = 6; +set @blob_len = 16; +set @suffix_len = @blob_len - @prefix_len; +create table t1_16 (a1 blob(16), a2 blob(16)); +create table t2_16 (b1 blob(16), b2 blob(16)); +create table t3_16 (c1 blob(16), c2 blob(16)); +insert into t1_16 values +(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len))); +insert into t1_16 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t1_16 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_16 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t2_16 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_16 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_16 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t3_16 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t3_16 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_16 values +(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len))); +explain extended select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select b1 from t2_16 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,<exists>(select 1 from `test`.`t2_16` where ((`test`.`t2_16`.`b1` > '0') and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`))))) +select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select b1 from t2_16 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_16 +where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a2`,`test`.`t1_16`.`a1`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` where ((`test`.`t2_16`.`b1` > '0') and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`) and (<cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))))) +select left(a1,7), left(a2,7) +from t1_16 +where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select substr(`test`.`t2_16`.`b1`,1,16) from `test`.`t2_16` where (`test`.`t2_16`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `materialized subselect`.`substring(b1,1,16)`)))))) +select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select group_concat(b1) from t2_16 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,<exists>(select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` having (<cache>(`test`.`t1_16`.`a1`) = <ref_null_helper>(group_concat(`test`.`t2_16`.`b1` separator ',')))))) +select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select group_concat(b1) from t2_16 group by b2); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +set @@group_concat_max_len = 256; +explain extended select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select group_concat(b1) from t2_16 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_16 +where a1 in (select group_concat(b1) from t2_16 group by b2); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended +select * from t1 +where concat(a1,'x') IN +(select left(a1,8) from t1_16 +where (a1, a2) IN +(select t2_16.b1, t2_16.b2 from t2_16, t2 +where t2.b2 = substring(t2_16.b2,1,6) and +t2.b1 IN (select c1 from t3 where c2 > '0'))); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where +3 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where +3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join) +4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><concat(`test`.`t1`.`a1`,'x')>(<in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(select 1 from `test`.`t1_16` where (<expr_cache><`test`.`t1_16`.`a2`,`test`.`t1_16`.`a1`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` join `test`.`t2` where ((`test`.`t2`.`b2` = substr(`test`.`t2_16`.`b2`,1,6)) and <expr_cache><`test`.`t2`.`b1`>(<in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (select `test`.`t3`.`c1` from `test`.`t3` where (`test`.`t3`.`c2` > '0') ), <primary_index_lookup>(`test`.`t2`.`b1` in <temporary table> on distinct_key where ((`test`.`t2`.`b1` = `materialized subselect`.`c1`)))))) and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`) and (<cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))))) and (<cache>(concat(`test`.`t1`.`a1`,'x')) = left(`test`.`t1_16`.`a1`,8)))))) +drop table t1_16, t2_16, t3_16; +set @blob_len = 512; +set @suffix_len = @blob_len - @prefix_len; +create table t1_512 (a1 blob(512), a2 blob(512)); +create table t2_512 (b1 blob(512), b2 blob(512)); +create table t3_512 (c1 blob(512), c2 blob(512)); +insert into t1_512 values +(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len))); +insert into t1_512 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t1_512 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_512 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t2_512 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_512 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_512 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t3_512 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t3_512 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_512 values +(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len))); +explain extended select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select b1 from t2_512 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,<exists>(select 1 from `test`.`t2_512` where ((`test`.`t2_512`.`b1` > '0') and (<cache>(`test`.`t1_512`.`a1`) = `test`.`t2_512`.`b1`))))) +select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select b1 from t2_512 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_512 +where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a2`,`test`.`t1_512`.`a1`>(<in_optimizer>((`test`.`t1_512`.`a1`,`test`.`t1_512`.`a2`),<exists>(select `test`.`t2_512`.`b1`,`test`.`t2_512`.`b2` from `test`.`t2_512` where ((`test`.`t2_512`.`b1` > '0') and (<cache>(`test`.`t1_512`.`a1`) = `test`.`t2_512`.`b1`) and (<cache>(`test`.`t1_512`.`a2`) = `test`.`t2_512`.`b2`))))) +select left(a1,7), left(a2,7) +from t1_512 +where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select substr(`test`.`t2_512`.`b1`,1,512) from `test`.`t2_512` where (`test`.`t2_512`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`substring(b1,1,512)`)))))) +select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select group_concat(b1) from t2_512 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select group_concat(b1) from t2_512 group by b2); +left(a1,7) left(a2,7) +set @@group_concat_max_len = 256; +explain extended select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select group_concat(b1) from t2_512 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_512 +where a1 in (select group_concat(b1) from t2_512 group by b2); +left(a1,7) left(a2,7) +drop table t1_512, t2_512, t3_512; +set @blob_len = 1024; +set @suffix_len = @blob_len - @prefix_len; +create table t1_1024 (a1 blob(1024), a2 blob(1024)); +create table t2_1024 (b1 blob(1024), b2 blob(1024)); +create table t3_1024 (c1 blob(1024), c2 blob(1024)); +insert into t1_1024 values +(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len))); +insert into t1_1024 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t1_1024 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_1024 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t2_1024 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_1024 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_1024 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t3_1024 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t3_1024 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_1024 values +(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len))); +explain extended select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select b1 from t2_1024 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,<exists>(select 1 from `test`.`t2_1024` where ((`test`.`t2_1024`.`b1` > '0') and (<cache>(`test`.`t1_1024`.`a1`) = `test`.`t2_1024`.`b1`))))) +select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select b1 from t2_1024 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1024 +where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a2`,`test`.`t1_1024`.`a1`>(<in_optimizer>((`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a2`),<exists>(select `test`.`t2_1024`.`b1`,`test`.`t2_1024`.`b2` from `test`.`t2_1024` where ((`test`.`t2_1024`.`b1` > '0') and (<cache>(`test`.`t1_1024`.`a1`) = `test`.`t2_1024`.`b1`) and (<cache>(`test`.`t1_1024`.`a2`) = `test`.`t2_1024`.`b2`))))) +select left(a1,7), left(a2,7) +from t1_1024 +where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in (select 1 from `test`.`t2_1024` where ((`test`.`t2_1024`.`b1` > '0') and (<cache>(`test`.`t1_1024`.`a1`) = substr(`test`.`t2_1024`.`b1`,1,1024)))))) +select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select group_concat(b1) from t2_1024 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select group_concat(b1) from t2_1024 group by b2); +left(a1,7) left(a2,7) +set @@group_concat_max_len = 256; +explain extended select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select group_concat(b1) from t2_1024 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_1024 +where a1 in (select group_concat(b1) from t2_1024 group by b2); +left(a1,7) left(a2,7) +drop table t1_1024, t2_1024, t3_1024; +set @blob_len = 1025; +set @suffix_len = @blob_len - @prefix_len; +create table t1_1025 (a1 blob(1025), a2 blob(1025)); +create table t2_1025 (b1 blob(1025), b2 blob(1025)); +create table t3_1025 (c1 blob(1025), c2 blob(1025)); +insert into t1_1025 values +(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len))); +insert into t1_1025 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t1_1025 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_1025 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t2_1025 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t2_1025 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_1025 values +(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len))); +insert into t3_1025 values +(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len))); +insert into t3_1025 values +(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len))); +insert into t3_1025 values +(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len))); +explain extended select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select b1 from t2_1025 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,<exists>(select 1 from `test`.`t2_1025` where ((`test`.`t2_1025`.`b1` > '0') and (<cache>(`test`.`t1_1025`.`a1`) = `test`.`t2_1025`.`b1`))))) +select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select b1 from t2_1025 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1025 +where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a2`,`test`.`t1_1025`.`a1`>(<in_optimizer>((`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a2`),<exists>(select `test`.`t2_1025`.`b1`,`test`.`t2_1025`.`b2` from `test`.`t2_1025` where ((`test`.`t2_1025`.`b1` > '0') and (<cache>(`test`.`t1_1025`.`a1`) = `test`.`t2_1025`.`b1`) and (<cache>(`test`.`t1_1025`.`a2`) = `test`.`t2_1025`.`b2`))))) +select left(a1,7), left(a2,7) +from t1_1025 +where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in (select 1 from `test`.`t2_1025` where ((`test`.`t2_1025`.`b1` > '0') and (<cache>(`test`.`t1_1025`.`a1`) = substr(`test`.`t2_1025`.`b1`,1,1025)))))) +select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0'); +left(a1,7) left(a2,7) +1 - 01x 2 - 01x +1 - 02x 2 - 02x +explain extended select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select group_concat(b1) from t2_1025 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select group_concat(b1) from t2_1025 group by b2); +left(a1,7) left(a2,7) +set @@group_concat_max_len = 256; +explain extended select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select group_concat(b1) from t2_1025 group by b2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `materialized subselect`.`group_concat(b1)`)))))) +select left(a1,7), left(a2,7) +from t1_1025 +where a1 in (select group_concat(b1) from t2_1025 group by b2); +left(a1,7) left(a2,7) +drop table t1_1025, t2_1025, t3_1025; +create table t1bit (a1 bit(3), a2 bit(3)); +create table t2bit (b1 bit(3), b2 bit(3)); +insert into t1bit values (b'000', b'100'); +insert into t1bit values (b'001', b'101'); +insert into t1bit values (b'010', b'110'); +insert into t2bit values (b'001', b'101'); +insert into t2bit values (b'010', b'110'); +insert into t2bit values (b'110', b'111'); +set @@optimizer_switch='semijoin=off'; +explain extended select bin(a1), bin(a2) +from t1bit +where (a1, a2) in (select b1, b2 from t2bit); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1bit ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2bit ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <expr_cache><`test`.`t1bit`.`a2`,`test`.`t1bit`.`a1`>(<in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (select `test`.`t2bit`.`b1`,`test`.`t2bit`.`b2` from `test`.`t2bit` ), <primary_index_lookup>(`test`.`t1bit`.`a1` in <temporary table> on distinct_key where ((`test`.`t1bit`.`a1` = `materialized subselect`.`b1`) and (`test`.`t1bit`.`a2` = `materialized subselect`.`b2`)))))) +select bin(a1), bin(a2) +from t1bit +where (a1, a2) in (select b1, b2 from t2bit); +bin(a1) bin(a2) +1 101 +10 110 +drop table t1bit, t2bit; +create table t1bb (a1 bit(3), a2 blob(3)); +create table t2bb (b1 bit(3), b2 blob(3)); +insert into t1bb values (b'000', '100'); +insert into t1bb values (b'001', '101'); +insert into t1bb values (b'010', '110'); +insert into t2bb values (b'001', '101'); +insert into t2bb values (b'010', '110'); +insert into t2bb values (b'110', '111'); +explain extended select bin(a1), a2 +from t1bb +where (a1, a2) in (select b1, b2 from t2bb); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1bb ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t2bb ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select conv(`test`.`t1bb`.`a1`,10,2) AS `bin(a1)`,`test`.`t1bb`.`a2` AS `a2` from `test`.`t1bb` where <expr_cache><`test`.`t1bb`.`a2`,`test`.`t1bb`.`a1`>(<in_optimizer>((`test`.`t1bb`.`a1`,`test`.`t1bb`.`a2`),<exists>(select `test`.`t2bb`.`b1`,`test`.`t2bb`.`b2` from `test`.`t2bb` where ((<cache>(`test`.`t1bb`.`a1`) = `test`.`t2bb`.`b1`) and (<cache>(`test`.`t1bb`.`a2`) = `test`.`t2bb`.`b2`))))) +select bin(a1), a2 +from t1bb +where (a1, a2) in (select b1, b2 from t2bb); +bin(a1) a2 +1 101 +10 110 +drop table t1bb, t2bb; +drop table t1, t2, t3, t1i, t2i, t3i, columns; +/****************************************************************************** +* Test the cache of the left operand of IN. +******************************************************************************/ +set @@optimizer_switch='semijoin=off'; +create table t1 (s1 int); +create table t2 (s2 int); +insert into t1 values (5),(1),(0); +insert into t2 values (0), (1); +select s2 from t2 where s2 in (select s1 from t1); +s2 +0 +1 +drop table t1, t2; +create table t1 (a int not null, b int not null); +create table t2 (c int not null, d int not null); +create table t3 (e int not null); +insert into t1 values (1,10); +insert into t1 values (1,20); +insert into t1 values (2,10); +insert into t1 values (2,20); +insert into t1 values (2,30); +insert into t1 values (3,20); +insert into t1 values (4,40); +insert into t2 values (2,10); +insert into t2 values (2,20); +insert into t2 values (2,40); +insert into t2 values (3,20); +insert into t2 values (4,10); +insert into t2 values (5,10); +insert into t3 values (10); +insert into t3 values (10); +insert into t3 values (20); +insert into t3 values (30); +explain extended +select a from t1 where a in (select c from t2 where d >= 20); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`)))))) +select a from t1 where a in (select c from t2 where d >= 20); +a +2 +2 +2 +3 +create index it1a on t1(a); +explain extended +select a from t1 where a in (select c from t2 where d >= 20); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`)))))) +select a from t1 where a in (select c from t2 where d >= 20); +a +2 +2 +2 +3 +insert into t2 values (1,10); +explain extended +select a from t1 where a in (select c from t2 where d >= 20); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`)))))) +select a from t1 where a in (select c from t2 where d >= 20); +a +2 +2 +2 +3 +explain extended +select a from t1 group by a having a in (select c from t2 where d >= 20); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`)))))) +select a from t1 group by a having a in (select c from t2 where d >= 20); +a +2 +3 +create index iab on t1(a, b); +explain extended +select a from t1 group by a having a in (select c from t2 where d >= 20); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index +2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `materialized subselect`.`c`)))))) +select a from t1 group by a having a in (select c from t2 where d >= 20); +a +2 +3 +explain extended +select a from t1 group by a +having a in (select c from t2 where d >= some(select e from t3 where max(b)=e)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL iab 8 NULL 7 100.00 Using index +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`,max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` where (<nop>(<expr_cache><`test`.`t2`.`d`,max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where (max(`test`.`t1`.`b`) = `test`.`t3`.`e`) having (<cache>(`test`.`t2`.`d`) >= <ref_null_helper>(`test`.`t3`.`e`)))))) and (<cache>(`test`.`t1`.`a`) = `test`.`t2`.`c`))))) +select a from t1 group by a +having a in (select c from t2 where d >= some(select e from t3 where max(b)=e)); +a +2 +3 +explain extended +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL iab 8 NULL 7 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` where (<nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))) and (<cache>(`test`.`t1`.`a`) = `test`.`t2`.`c`))))) +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +a +1 +2 +2 +2 +3 +drop table t1, t2, t3; +create table t2 (a int, b int, key(a), key(b)); +insert into t2 values (3,3),(3,3),(3,3); +select 1 from t2 where +t2.a > 1 +or +t2.a = 3 and not t2.a not in (select t2.b from t2); +1 +1 +1 +1 +drop table t2; +create table t1 (a1 int key); +create table t2 (b1 int); +insert into t1 values (5); +explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +select min(a1) from t1 where 7 in (select b1 from t2 group by b1); +min(a1) +set @@optimizer_switch='default,materialization=off'; +explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +select min(a1) from t1 where 7 in (select b1 from t2 group by b1); +min(a1) +set @@optimizer_switch='default,semijoin=off'; +explain select min(a1) from t1 where 7 in (select b1 from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found +select min(a1) from t1 where 7 in (select b1 from t2); +min(a1) +set @@optimizer_switch='default,materialization=off'; +explain select min(a1) from t1 where 7 in (select b1 from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select min(a1) from t1 where 7 in (select b1 from t2); +min(a1) +NULL +drop table t1,t2; +create table t1 (a char(2), b varchar(10)); +insert into t1 values ('a', 'aaa'); +insert into t1 values ('aa', 'aaaa'); +set @@optimizer_switch='default,semijoin=off'; +explain select a,b from t1 where b in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 +select a,b from t1 where b in (select a from t1); +a b +prepare st1 from "select a,b from t1 where b in (select a from t1)"; +execute st1; +a b +execute st1; +a b +drop table t1; +CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM; +INSERT INTO t1 (f1, f2) VALUES (1, 1.789); +INSERT INTO t1 (f1, f2) VALUES (13, 1.454); +INSERT INTO t1 (f1, f2) VALUES (10, 1.668); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES (1, 1.789); +INSERT INTO t2 VALUES (13, 1.454); +SET @@optimizer_switch='default,semijoin=on,materialization=on'; +EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 +SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2); +COUNT(*) +2 +DROP TABLE t1, t2; +CREATE TABLE t1 ( +pk int, +a varchar(1), +b varchar(4), +c varchar(4), +d varchar(4), +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff'); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff'); +SET @@optimizer_switch='default,semijoin=on,materialization=on'; +EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan +SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0); +pk +2 +SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0); +pk +2 +DROP TABLE t1, t2; +# +# BUG#50019: Wrong result for IN-subquery with materialization +# +create table t1(i int); +insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); +create table t2(i int); +insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); +create table t3(i int); +insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); +select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5); +i +1 +2 +3 +4 +set @save_optimizer_switch=@@optimizer_switch; +set session optimizer_switch='materialization=off'; +select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5); +i +1 +2 +3 +4 +set session optimizer_switch=@save_optimizer_switch; +drop table t1, t2, t3; +create table t0 (a int); +insert into t0 values (0),(1),(2); +create table t1 (a int); +insert into t1 values (0),(1),(2); +explain select a, a in (select a from t1) from t0; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 3 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 +select a, a in (select a from t1) from t0; +a a in (select a from t1) +0 1 +1 1 +2 1 +prepare s from 'select a, a in (select a from t1) from t0'; +execute s; +a a in (select a from t1) +0 1 +1 1 +2 1 +update t1 set a=123; +execute s; +a a in (select a from t1) +0 0 +1 0 +2 0 +drop table t0, t1; +# +# LPBUG#609121: RQG: wrong result on aggregate + NOT IN + HAVING and +# partial_match_table_scan=on +# +create table t1 (c1 int); +create table t2 (c2 int); +insert into t1 values (1); +insert into t2 values (2); +set @@optimizer_switch='semijoin=off'; +EXPLAIN +SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +2 SUBQUERY t2 system NULL NULL NULL NULL 1 +SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2); +c1_sum +NULL +EXPLAIN +SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +2 SUBQUERY t2 system NULL NULL NULL NULL 1 +SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum; +c1_sum +drop table t1, t2; +# +# BUG#52344 - Subquery materialization: +# Assertion if subquery in on-clause of outer join +# +set @@optimizer_switch='semijoin=off'; +CREATE TABLE t1 (i INTEGER); +INSERT INTO t1 VALUES (10); +CREATE TABLE t2 (j INTEGER); +INSERT INTO t2 VALUES (5); +CREATE TABLE t3 (k INTEGER); +EXPLAIN +SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY t2 system NULL NULL NULL NULL 1 +2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found +SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3); +i +10 +EXPLAIN +SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY t2 system NULL NULL NULL NULL 1 +2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found +SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3); +i +10 +DROP TABLE t1, t2, t3; +# +# LPBUG#609121: RQG: wrong result on aggregate + NOT IN + HAVING and +# partial_match_table_scan=on +# +CREATE TABLE t1 (c1 int); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (c2 int); +INSERT INTO t2 VALUES (10); +PREPARE st1 FROM " +SELECT * +FROM t2 LEFT JOIN (SELECT * FROM t2) t3 ON (8, 4) IN (SELECT c1, c1 FROM t1)"; +EXECUTE st1; +c2 c2 +10 10 +EXECUTE st1; +c2 c2 +10 10 +DROP TABLE t1, t2; +# +# Testcase backport: BUG#46548 IN-subqueries return 0 rows with materialization=on +# +CREATE TABLE t1 ( +pk int, +a varchar(1), +b varchar(4), +c varchar(4), +d varchar(4), +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff'); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff'); +SET @@optimizer_switch='default,semijoin=on,materialization=on'; +EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan +SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0); +pk +2 +SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0); +pk +2 +DROP TABLE t1, t2; +# +# LPBUG#719198 Ordered_key::cmp_key_with_search_key(rownum_t): Assertion `!compare_pred[i]->null_value' +# failed with subquery on both sides of NOT IN and materialization +# +CREATE TABLE t1 (f1a int, f1b int) ; +INSERT IGNORE INTO t1 VALUES (1,1),(2,2); +CREATE TABLE t2 ( f2 int); +INSERT IGNORE INTO t2 VALUES (3),(4); +CREATE TABLE t3 (f3a int, f3b int); +set session optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off'; +EXPLAIN +SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where +3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); +f2 +EXPLAIN +SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where +3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found +SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1); +f2 +insert into t3 values (1,1),(2,2); +EXPLAIN +SELECT * FROM t2 WHERE (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where +3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t2 WHERE (SELECT f3a FROM t3 where f3a > 3) NOT IN (SELECT f1a FROM t1); +f2 +3 +4 +drop table t1, t2, t3; +# +# LPBUG#730604 Assertion `bit < (map)->n_bits' failed in maria-5.3 with +# partial_match_rowid_merge +# +CREATE TABLE t1 (f1 int NOT NULL, f2 int, f3 int) ; +CREATE TABLE t2 (f1 int NOT NULL, f2 int, f3 int) ; +INSERT INTO t1 VALUES (60, 3, null), (61, null, 77); +INSERT INTO t2 VALUES (1000,6,2); +set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off'; +EXPLAIN +SELECT (f1, f2, f3) NOT IN +(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3) +FROM t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using filesort +SELECT (f1, f2, f3) NOT IN +(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3) +FROM t2; +(f1, f2, f3) NOT IN +(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3) +1 +drop table t1, t2; diff --git a/mysql-test/r/subselect_no_mat.result b/mysql-test/r/subselect_no_mat.result new file mode 100644 index 00000000000..9a8840f4d2b --- /dev/null +++ b/mysql-test/r/subselect_no_mat.result @@ -0,0 +1,5117 @@ +select @@optimizer_switch like '%materialization=on%'; +@@optimizer_switch like '%materialization=on%' +1 +set optimizer_switch='materialization=off'; +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12; +drop view if exists v2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; +select (select 2); +(select 2) +2 +explain extended select (select 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select 2 AS `(select 2)` +SELECT (SELECT 1) UNION SELECT (SELECT 2); +(SELECT 1) +1 +2 +explain extended SELECT (SELECT 1) UNION SELECT (SELECT 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1249 Select 4 was reduced during optimization +Note 1003 select 1 AS `(SELECT 1)` union select 2 AS `(SELECT 2)` +SELECT (SELECT (SELECT 0 UNION SELECT 0)); +(SELECT (SELECT 0 UNION SELECT 0)) +0 +explain extended SELECT (SELECT (SELECT 0 UNION SELECT 0)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +4 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select (select 0 union select 0) AS `(SELECT (SELECT 0 UNION SELECT 0))` +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING a=1) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING b=1) as a,(SELECT 1 FROM (SELECT 1) as c HAVING a=1) as b; +ERROR 42S22: Reference 'b' not supported (forward reference in item list) +SELECT (SELECT 1),MAX(1) FROM (SELECT 1) as a; +(SELECT 1) MAX(1) +1 1 +SELECT (SELECT a) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +EXPLAIN EXTENDED SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having (<expr_cache><'1'>((select '1')) = 1) +SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +1 +1 +SELECT (SELECT 1), a; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT 1 as a FROM (SELECT 1) as b HAVING (SELECT a)=1; +a +1 +SELECT 1 FROM (SELECT (SELECT a) b) c; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT * FROM (SELECT 1 as id) b WHERE id IN (SELECT * FROM (SELECT 1 as id) c ORDER BY id); +id +1 +SELECT * FROM (SELECT 1) a WHERE 1 IN (SELECT 1,1); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 IN (SELECT 1); +1 IN (SELECT 1) +1 +SELECT 1 FROM (SELECT 1 as a) b WHERE 1 IN (SELECT (SELECT a)); +1 +1 +select (SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE(1)); +ERROR HY000: Incorrect usage of PROCEDURE and subquery +SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE((SELECT 1)); +ERROR HY000: Incorrect parameters to procedure 'ANALYSE' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NOT NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1,2,3) = ROW(1,2,3); +(SELECT 1,2,3) = ROW(1,2,3) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,1); +(SELECT 1,2,3) = ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) < ROW(1,2,1); +(SELECT 1,2,3) < ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) > ROW(1,2,1); +(SELECT 1,2,3) > ROW(1,2,1) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,NULL); +(SELECT 1,2,3) = ROW(1,2,NULL) +NULL +SELECT ROW(1,2,3) = (SELECT 1,2,3); +ROW(1,2,3) = (SELECT 1,2,3) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,1); +ROW(1,2,3) = (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) < (SELECT 1,2,1); +ROW(1,2,3) < (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) > (SELECT 1,2,1); +ROW(1,2,3) > (SELECT 1,2,1) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,NULL); +ROW(1,2,3) = (SELECT 1,2,NULL) +NULL +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'a'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'a') +1 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'b'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'b') +0 +SELECT (SELECT 1.5,2,'a') = ROW('1.5b',2,'b'); +(SELECT 1.5,2,'a') = ROW('1.5b',2,'b') +0 +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: '1.5b' +SELECT (SELECT 'b',2,'a') = ROW(1.5,2,'a'); +(SELECT 'b',2,'a') = ROW(1.5,2,'a') +0 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,'2','a'); +(SELECT 1.5,2,'a') = ROW(1.5,'2','a') +1 +SELECT (SELECT 1.5,'c','a') = ROW(1.5,2,'a'); +(SELECT 1.5,'c','a') = ROW(1.5,2,'a') +0 +SELECT (SELECT * FROM (SELECT 'test' a,'test' b) a); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 as a,(SELECT a+a) b,(SELECT b); +a b (SELECT b) +1 2 2 +create table t1 (a int); +create table t2 (a int, b int); +create table t3 (a int); +create table t4 (a int not null, b int not null); +insert into t1 values (2); +insert into t2 values (1,7),(2,7); +insert into t4 values (4,8),(3,8),(5,9); +select (select a from t1 where t1.a = a1) as a2, (select b from t2 where t2.b=a2) as a1; +ERROR 42S22: Reference 'a1' not supported (forward reference in item list) +select (select a from t1 where t1.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a) a +NULL 1 +2 2 +select (select a from t1 where t1.a=t2.b), a from t2; +(select a from t1 where t1.a=t2.b) a +NULL 1 +NULL 2 +select (select a from t1), a, (select 1 union select 2 limit 1) from t2; +(select a from t1) a (select 1 union select 2 limit 1) +2 1 1 +2 2 1 +select (select a from t3), a from t2; +(select a from t3) a +NULL 1 +NULL 2 +select * from t2 where t2.a=(select a from t1); +a b +2 7 +insert into t3 values (6),(7),(3); +select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1); +a b +1 7 +2 7 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 order by a limit 2) limit 3; +a b +1 7 +2 7 +3 8 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +a b +1 7 +2 7 +4 8 +3 8 +explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using filesort +3 UNION t4 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = (select `test`.`t3`.`a` from `test`.`t3` order by 1 desc limit 1))) union (select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t4` where (`test`.`t4`.`b` = (select (max(`test`.`t2`.`a`) * 4) from `test`.`t2`)) order by `a`) +select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2; +(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a +3 1 +7 2 +select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +(select t3.a from t3 where a<8 order by 1 desc limit 1) a +7 2 +explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> system NULL NULL NULL NULL 1 100.00 +3 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort +Warnings: +Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,'2' AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); +a +select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) +8 7.5000 +8 4.5000 +9 7.5000 +explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t4.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t4`.`b` AS `b`,(select avg((`test`.`t2`.`a` + (select min(`test`.`t3`.`a`) from `test`.`t3` where (`test`.`t3`.`a` >= `test`.`t4`.`a`)))) from `test`.`t2`) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from `test`.`t4` +select * from t3 where exists (select * from t2 where t2.b=t3.a); +a +7 +select * from t3 where not exists (select * from t2 where t2.b=t3.a); +a +6 +3 +select * from t3 where a in (select b from t2); +a +7 +select * from t3 where a not in (select b from t2); +a +6 +3 +select * from t3 where a = some (select b from t2); +a +7 +select * from t3 where a <> any (select b from t2); +a +6 +3 +select * from t3 where a = all (select b from t2); +a +7 +select * from t3 where a <> all (select b from t2); +a +6 +3 +insert into t2 values (100, 5); +select * from t3 where a < any (select b from t2); +a +6 +3 +select * from t3 where a < all (select b from t2); +a +3 +select * from t3 where a >= any (select b from t2); +a +6 +7 +explain extended select * from t3 where a >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2); +a +7 +delete from t2 where a=100; +select * from t3 where a in (select a,b from t2); +ERROR 21000: Operand should contain 1 column(s) +select * from t3 where a in (select * from t2); +ERROR 21000: Operand should contain 1 column(s) +insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9),(1,10); +select b,max(a) as ma from t4 group by b having b < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +insert into t2 values (2,10); +select b,max(a) as ma from t4 group by b having ma < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +10 1 +delete from t2 where a=2 and b=10; +select b,max(a) as ma from t4 group by b having b >= (select max(t2.a) from t2 where t2.b=t4.b); +b ma +7 12 +create table t5 (a int); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (5); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (2); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +explain extended select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 +Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select <expr_cache><`test`.`t2`.`a`>((select '2' from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`))) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` +select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2; +ERROR 21000: Subquery returns more than 1 row +create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq)); +create table t7( uq int primary key, name char(25)); +insert into t7 values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta"); +insert into t6 values (1,1),(1,2),(2,2),(1,3); +select * from t6 where exists (select * from t7 where uq = clinic_uq); +patient_uq clinic_uq +1 1 +1 2 +2 2 +explain extended select * from t6 where exists (select * from t7 where uq = clinic_uq); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t6 ALL NULL NULL NULL NULL 4 100.00 Using where +2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 100.00 Using index +Warnings: +Note 1276 Field or reference 'test.t6.clinic_uq' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where <expr_cache><`test`.`t6`.`clinic_uq`>(exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`))) +select * from t1 where a= (select a from t2,t4 where t2.b=t4.b); +ERROR 23000: Column 'a' in field list is ambiguous +drop table t1,t2,t3; +CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0'); +INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b'); +CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0'); +INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2'); +CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00'); +INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13'); +SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1); +a b +W 1732-02-22 +SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2); +a b +W 1 +SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3); +a b +W a +CREATE TABLE `t8` ( +`pseudo` varchar(35) character set latin1 NOT NULL default '', +`email` varchar(60) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`), +UNIQUE KEY `email` (`email`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +INSERT INTO t8 (pseudo,email) VALUES ('joce','test'); +INSERT INTO t8 (pseudo,email) VALUES ('joce1','test1'); +INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1'); +EXPLAIN EXTENDED SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index +4 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +2 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00 +3 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +Warnings: +Note 1003 select 'joce' AS `pseudo`,(select 'test' from `test`.`t8` where 1) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from `test`.`t8` where 1 +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM +t8 WHERE pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT * FROM t8 WHERE +pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +pseudo +joce +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo LIKE '%joce%'); +ERROR 21000: Subquery returns more than 1 row +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8; +CREATE TABLE `t1` ( +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (topic,date,pseudo) VALUES +('43506','2002-10-02','joce'),('40143','2002-08-03','joce'); +EXPLAIN EXTENDED SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03') +EXPLAIN EXTENDED SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 SUBQUERY t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select (select distinct `test`.`t1`.`date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03')) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')` +SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +date +2002-08-03 +SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03') +2002-08-03 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1; +1 +1 +1 +1 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1; +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL topic 3 NULL 2 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (40143,1),(43506,2); +CREATE TABLE `t2` ( +`mot` varchar(30) NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t2 (mot,topic,date,pseudo) VALUES ('joce','40143','2002-10-22','joce'), ('joce','43506','2002-10-22','joce'); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +a +40143 +SELECT numeropost,maxnumrep FROM t1 WHERE exists (SELECT 1 FROM t2 WHERE (mot='joce') AND date >= '2002-10-21' AND t1.numeropost = t2.topic) ORDER BY maxnumrep DESC LIMIT 0, 20; +numeropost maxnumrep +43506 2 +40143 1 +SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) b; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT 1 IN (SELECT 1 FROM t2 HAVING a); +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 1 +SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2); +mot topic date pseudo +SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 0 +drop table t1,t2; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (1,0),(2,1); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +select numeropost as a FROM t1 ORDER BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +show warnings; +Level Code Message +Error 1242 Subquery returns more than 1 row +Error 1028 Sort aborted +drop table t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +(select * from t1) union (select * from t1) order by (select a from t1 limit 1); +a +1 +2 +3 +drop table t1; +CREATE TABLE t1 (field char(1) NOT NULL DEFAULT 'b'); +INSERT INTO t1 VALUES (); +SELECT field FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1 FROM (SELECT 1) a HAVING field='b'); +ERROR 21000: Subquery returns more than 1 row +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL default '0', +`numreponse` int(10) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`numeropost`,`numreponse`), +UNIQUE KEY `numreponse` (`numreponse`), +KEY `pseudo` (`pseudo`,`numeropost`) +) ENGINE=MyISAM; +SELECT (SELECT numeropost FROM t1 HAVING numreponse=a),numreponse FROM (SELECT * FROM t1) as a; +ERROR 42S22: Reference 'numreponse' not supported (forward reference in item list) +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=a) FROM (SELECT * FROM t1) as a; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=1) FROM (SELECT * FROM t1) as a; +numreponse (SELECT numeropost FROM t1 HAVING numreponse=1) +INSERT INTO t1 (numeropost,numreponse,pseudo) VALUES (1,1,'joce'),(1,2,'joce'),(1,3,'test'); +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1 FROM t1 WHERE numeropost='1'); +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1') +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select '3' AS `numreponse` from `test`.`t1` where (('1' = '1')) +drop table t1; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1); +SELECT 1 FROM (SELECT a FROM t1) b HAVING (SELECT b.a)=1; +1 +1 +drop table t1; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 22),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +update t1 set b= (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +update t1 set b= (select b from t2); +ERROR 21000: Subquery returns more than 1 row +update t1 set b= (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 NULL +1 21 +2 22 +drop table t1, t2; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +select * from t1 where b = (select b from t2 where t1.a = t2.a); +a b +2 12 +delete from t1 where b = (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +delete from t1 where b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete from t1 where b = (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 10 +1 11 +drop table t1, t2; +create table t11 (a int NOT NULL, b int, primary key (a)); +create table t12 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t11 values (0, 10),(1, 11),(2, 12); +insert into t12 values (33, 10),(22, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t11; +a b +0 10 +1 11 +2 12 +select * from t12; +a b +33 10 +22 11 +2 12 +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a); +ERROR HY000: You can't specify target table 't12' for update in FROM clause +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a); +select * from t11; +a b +0 10 +1 11 +select * from t12; +a b +33 10 +22 11 +drop table t11, t12, t2; +CREATE TABLE t1 (x int) ENGINE=MyISAM; +create table t2 (a int) ENGINE=MyISAM; +create table t3 (b int); +insert into t2 values (1); +insert into t3 values (1),(2); +INSERT INTO t1 (x) VALUES ((SELECT x FROM t1)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +INSERT INTO t1 (x) VALUES ((SELECT b FROM t3)); +ERROR 21000: Subquery returns more than 1 row +INSERT INTO t1 (x) VALUES ((SELECT a FROM t2)); +select * from t1; +x +1 +insert into t2 values (1); +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2; +select * from t1; +x +1 +2 +3 +3 +INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2; +select * from t1; +x +1 +2 +3 +3 +11 +11 +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2)); +ERROR 42S22: Unknown column 'x' in 'field list' +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +3 +3 +11 +11 +2 +drop table t1, t2, t3; +CREATE TABLE t1 (x int not null, y int, primary key (x)) ENGINE=MyISAM; +create table t2 (a int); +create table t3 (a int); +insert into t2 values (1); +insert into t3 values (1),(2); +select * from t1; +x y +replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2)); +ERROR 21000: Subquery returns more than 1 row +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 2 +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2)); +select * from t1; +x y +1 3 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 1 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 3 +4 2 +replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 2 +2 1 +drop table t1, t2, t3; +SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *); +ERROR HY000: No tables used +CREATE TABLE t2 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (1),(2); +SELECT * FROM t2 WHERE id IN (SELECT 1); +id +1 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1) +SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id +1 +SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id +2 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 3 was reduced during optimization +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = (1 + 1)) +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3))))) +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3); +id +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2); +id +2 +INSERT INTO t2 VALUES ((SELECT * FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +INSERT INTO t2 VALUES ((SELECT id FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +SELECT * FROM t2; +id +1 +2 +CREATE TABLE t1 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 values (1),(1); +UPDATE t2 SET id=(SELECT * FROM t1); +ERROR 21000: Subquery returns more than 1 row +drop table t2, t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2; +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 3 IN (SELECT * from t1); +3 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +NULL +select 1 > ALL (SELECT * from t1); +1 > ALL (SELECT * from t1) +0 +select 10 > ALL (SELECT * from t1); +10 > ALL (SELECT * from t1) +NULL +select 1 > ANY (SELECT * from t1); +1 > ANY (SELECT * from t1) +NULL +select 10 > ANY (SELECT * from t1); +10 > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a varchar(20)); +insert into t1 values ('A'),('BC'),('DEF'); +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a='BC'; +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'DEF' IN (SELECT * from t1); +'DEF' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +NULL +select 'A' > ALL (SELECT * from t1); +'A' > ALL (SELECT * from t1) +0 +select 'XYZS' > ALL (SELECT * from t1); +'XYZS' > ALL (SELECT * from t1) +NULL +select 'A' > ANY (SELECT * from t1); +'A' > ANY (SELECT * from t1) +NULL +select 'XYZS' > ANY (SELECT * from t1); +'XYZS' > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a float); +insert into t1 values (1.5),(2.5),(3.5); +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2.5; +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 3.5 IN (SELECT * from t1); +3.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +NULL +select 1.5 > ALL (SELECT * from t1); +1.5 > ALL (SELECT * from t1) +0 +select 10.5 > ALL (SELECT * from t1); +10.5 > ALL (SELECT * from t1) +NULL +select 1.5 > ANY (SELECT * from t1); +1.5 > ANY (SELECT * from t1) +NULL +select 10.5 > ANY (SELECT * from t1); +10.5 > ANY (SELECT * from t1) +1 +explain extended select (select a+1) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1249 Select 2 was reduced during optimization +Note 1003 select (`test`.`t1`.`a` + 1) AS `(select a+1)` from `test`.`t1` +select (select a+1) from t1; +(select a+1) +2.5 +NULL +4.5 +drop table t1; +CREATE TABLE t1 (a int(11) NOT NULL default '0', PRIMARY KEY (a)); +CREATE TABLE t2 (a int(11) default '0', INDEX (a)); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +a t1.a in (select t2.a from t2) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1` +CREATE TABLE t3 (a int(11) default '0'); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +a t1.a in (select t2.a from t2,t3 where t3.a=t2.a) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1` +drop table t1,t2,t3; +create table t1 (a float); +select 10.5 IN (SELECT * from t1 LIMIT 1); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +select 10.5 IN (SELECT * from t1 LIMIT 1 UNION SELECT 1.5); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int, b int, c varchar(10)); +create table t2 (a int); +insert into t1 values (1,2,'a'),(2,3,'b'),(3,4,'c'); +insert into t2 values (1),(2),(NULL); +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a') (select c from t1 where a=t2.a) +1 1 a +2 0 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b') (select c from t1 where a=t2.a) +1 0 a +2 1 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c') (select c from t1 where a=t2.a) +1 0 a +2 0 b +NULL NULL NULL +drop table t1,t2; +create table t1 (a int, b real, c varchar(10)); +insert into t1 values (1, 1, 'a'), (2,2,'b'), (NULL, 2, 'b'); +select ROW(1, 1, 'a') IN (select a,b,c from t1); +ROW(1, 1, 'a') IN (select a,b,c from t1) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1); +ROW(1, 2, 'a') IN (select a,b,c from t1) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1); +ROW(1, 1, 'a') IN (select b,a,c from t1) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a') +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a') +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a') +1 +select ROW(1, 1, 'a') IN (select b,a,c from t1 limit 2); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int); +insert into t1 values (1); +do @a:=(SELECT a from t1); +select @a; +@a +1 +set @a:=2; +set @a:=(SELECT a from t1); +select @a; +@a +1 +drop table t1; +do (SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +set @a:=(SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 (a int, KEY(a)); +HANDLER t1 OPEN; +HANDLER t1 READ a=((SELECT 1)); +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1))' at line 1 +HANDLER t1 CLOSE; +drop table t1; +create table t1 (a int); +create table t2 (b int); +insert into t1 values (1),(2); +insert into t2 values (1); +select a from t1 where a in (select a from t1 where a in (select b from t2)); +a +1 +drop table t1, t2; +create table t1 (a int, b int); +create table t2 like t1; +insert into t1 values (1,2),(1,3),(1,4),(1,5); +insert into t2 values (1,2),(1,3); +select * from t1 where row(a,b) in (select a,b from t2); +a b +1 2 +1 3 +drop table t1, t2; +CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +select * from t1; +i +2 +drop table t1; +CREATE TABLE t1 (a int(1)); +EXPLAIN EXTENDED SELECT (SELECT RAND() FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select rand() from `test`.`t1`) AS `(SELECT RAND() FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select encrypt('test') from `test`.`t1`) AS `(SELECT ENCRYPT('test') FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select benchmark(1,1) from `test`.`t1`) AS `(SELECT BENCHMARK(1,1) FROM t1)` from `test`.`t1` +drop table t1; +CREATE TABLE `t1` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t2` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t3` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t3 VALUES (1,1); +SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE +numeropost=topic); +topic +2 +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +test 2 0000-00-00 test +DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT +EXISTS(SELECT * FROM t3 WHERE numeropost=topic)); +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +drop table t1, t2, t3; +SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +a (SELECT a) +1 1 +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT 1)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT 1)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a+0)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a+0)` int(3) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT (SELECT 1 as a UNION SELECT 1+1 limit 1,1) as a; +select * from t1; +a +2 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` bigint(20) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (a int); +insert into t1 values (1), (2), (3); +explain extended select a,(select (select rand() from t1 limit 1) from t1 limit 1) +from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,(select (select rand() from `test`.`t1` limit 1) from `test`.`t1` limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from `test`.`t1` +drop table t1; +select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 ( +ID int(11) NOT NULL auto_increment, +name char(35) NOT NULL default '', +t2 char(3) NOT NULL default '', +District char(20) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (130,'Sydney','AUS','New South Wales',3276207); +INSERT INTO t1 VALUES (131,'Melbourne','AUS','Victoria',2865329); +INSERT INTO t1 VALUES (132,'Brisbane','AUS','Queensland',1291117); +CREATE TABLE t2 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '', +PRIMARY KEY (Code) +) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('AUS','Australia','Oceania','Australia and New Zealand',7741220.00,1901,18886000,79.8,351182.00,392911.00,'Australia','Constitutional Monarchy, Federation','Elisabeth II',135,'AU'); +INSERT INTO t2 VALUES ('AZE','Azerbaijan','Asia','Middle East',86600.00,1991,7734000,62.9,4127.00,4100.00,'Azärbaycan','Federal Republic','Heydär Äliyev',144,'AZ'); +select t2.Continent, t1.Name, t1.Population from t2 LEFT JOIN t1 ON t2.Code = t1.t2 where t1.Population IN (select max(t1.Population) AS Population from t1, t2 where t1.t2 = t2.Code group by Continent); +Continent Name Population +Oceania Sydney 3276207 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (pseudo) VALUES ('test'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +INSERT INTO t1 (pseudo) VALUES ('test1'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +drop table t1; +CREATE TABLE `t1` ( +`i` int(11) NOT NULL default '0', +PRIMARY KEY (`i`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+(SELECT MAX(i) FROM (SELECT 1) t) WHERE i=(SELECT MAX(i)); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t); +ERROR 42S22: Unknown column 't.i' in 'field list' +select * from t1; +i +3 +drop table t1; +CREATE TABLE t1 ( +id int(11) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(1),(2),(2),(1),(3); +CREATE TABLE t2 ( +id int(11) default NULL, +name varchar(15) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (4,'vita'), (1,'vita'), (2,'vita'), (1,'vita'); +update t1, t2 set t2.name='lenka' where t2.id in (select id from t1); +select * from t2; +id name +4 vita +1 lenka +2 lenka +1 lenka +drop table t1,t2; +create table t1 (a int, unique index indexa (a)); +insert into t1 values (-1), (-4), (-2), (NULL); +select -10 IN (select a from t1 FORCE INDEX (indexa)); +-10 IN (select a from t1 FORCE INDEX (indexa)) +NULL +drop table t1; +create table t1 (id int not null auto_increment primary key, salary int, key(salary)); +insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000); +explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using index condition +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`)) +drop table t1; +CREATE TABLE t1 ( +ID int(10) unsigned NOT NULL auto_increment, +SUB_ID int(3) unsigned NOT NULL default '0', +REF_ID int(10) unsigned default NULL, +REF_SUB int(3) unsigned default '0', +PRIMARY KEY (ID,SUB_ID), +UNIQUE KEY t1_PK (ID,SUB_ID), +KEY t1_FK (REF_ID,REF_SUB), +KEY t1_REFID (REF_ID) +) ENGINE=MyISAM CHARSET=cp1251; +INSERT INTO t1 VALUES (1,0,NULL,NULL),(2,0,NULL,NULL); +SELECT DISTINCT REF_ID FROM t1 WHERE ID= (SELECT DISTINCT REF_ID FROM t1 WHERE ID=2); +REF_ID +DROP TABLE t1; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,0), (2,0), (3,0); +insert into t2 values (1,1), (2,1), (3,1), (2,2); +update ignore t1 set b=(select b from t2 where t1.a=t2.a); +Warnings: +Error 1242 Subquery returns more than 1 row +select * from t1; +a b +1 1 +2 NULL +3 1 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +`email` varchar(60) NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `email` (`email`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM CHARSET=latin1 PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (id,pseudo,email) VALUES (1,'test','test'),(2,'test1','test1'); +SELECT pseudo as a, pseudo as b FROM t1 GROUP BY (SELECT a) ORDER BY (SELECT id*1); +a b +test test +test1 test1 +drop table if exists t1; +(SELECT 1 as a) UNION (SELECT 1) ORDER BY (SELECT a+0); +a +1 +create table t1 (a int not null, b int, primary key (a)); +create table t2 (a int not null, primary key (a)); +create table t3 (a int not null, b int, primary key (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 4 75.00 Using where; Using index; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`a`) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 4 75.00 Using where; Using join buffer (flat, BNL join) +1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t3` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t3`.`a` = `test`.`t1`.`b`)) +drop table t1, t2, t3; +create table t1 (a int, b int, index a (a,b)); +create table t2 (a int, index a (a)); +create table t3 (a int, b int, index a (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 +select rand()*100000+200,rand()*100000 from t0 A, t0 B, t0 C, t0 D; +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using index; FirstMatch(t2) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where (`test`.`t1`.`a` = `test`.`t2`.`a`) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t3 index a a 5 NULL 3 100.00 Using where; Using index +1 PRIMARY t1 ref a a 10 test.t2.a,test.t3.a 116 100.61 Using index; FirstMatch(t2) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` = `test`.`t3`.`a`)) +insert into t1 values (3,31); +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +3 +4 +select * from t2 where t2.a in (select a from t1 where t1.b <> 30 and t1.b <> 31); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ref a a 5 test.t2.a 101 100.00 Using where; Using index; FirstMatch(t2) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t1`.`b` <> 30)) +drop table t0, t1, t2, t3; +create table t1 (a int, b int); +create table t2 (a int, b int); +create table t3 (a int, b int); +insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10); +insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1); +insert into t3 values (3,3), (2,2), (1,1); +select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) from t3; +a (select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) +3 1 +2 2 +1 2 +drop table t1,t2,t3; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +select * from t1 where exists (select s1 from t2 having max(t2.s1)=t1.s1); +s1 +1 +drop table t1,t2; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +update t1 set s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A); +ERROR 42S22: Unknown column 'x.s1' in 'field list' +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 CHAR(5) COLLATE latin1_german1_ci, +s2 CHAR(5) COLLATE latin1_swedish_ci); +INSERT INTO t1 VALUES ('z','?'); +select * from t1 where s1 > (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +select * from t1 where s1 > any (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +drop table t1; +create table t1(toid int,rd int); +create table t2(userid int,pmnew int,pmtotal int); +insert into t2 values(1,0,0),(2,0,0); +insert into t1 values(1,0),(1,0),(1,0),(1,12),(1,15),(1,123),(1,12312),(1,12312),(1,123),(2,0),(2,0),(2,1),(2,2); +select userid,pmtotal,pmnew, (select count(rd) from t1 where toid=t2.userid) calc_total, (select count(rd) from t1 where rd=0 and toid=t2.userid) calc_new from t2 where userid in (select distinct toid from t1); +userid pmtotal pmnew calc_total calc_new +1 0 0 9 3 +2 0 0 4 2 +drop table t1, t2; +create table t1 (s1 char(5)); +select (select 'a','b' from t1 union select 'a','b' from t1) from t1; +ERROR 21000: Operand should contain 1 column(s) +insert into t1 values ('tttt'); +select * from t1 where ('a','b')=(select 'a','b' from t1 union select 'a','b' from t1); +s1 +tttt +explain extended (select * from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 (select 'tttt' AS `s1` from `test`.`t1`) +(select * from t1); +s1 +tttt +drop table t1; +create table t1 (s1 char(5), index s1(s1)); +create table t2 (s1 char(5), index s1(s1)); +insert into t1 values ('a1'),('a2'),('a3'); +insert into t2 values ('a1'),('a2'); +select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +s1 s1 NOT IN (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +s1 s1 = ANY (SELECT s1 FROM t2) +a1 1 +a2 1 +a3 0 +select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +s1 s1 <> ALL (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +s1 s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') +a1 0 +a2 1 +a3 1 +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Using where; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1` +drop table t1,t2; +create table t2 (a int, b int); +create table t3 (a int); +insert into t3 values (6),(7),(3); +select * from t3 where a >= all (select b from t2); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) +select * from t3 where a >= some (select b from t2); +a +explain extended select * from t3 where a >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2 group by 1); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) +select * from t3 where a >= some (select b from t2 group by 1); +a +explain extended select * from t3 where a >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) +select * from t3 where NULL >= any (select b from t2); +a +explain extended select * from t3 where NULL >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= any (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= any (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2); +a +explain extended select * from t3 where NULL >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +insert into t2 values (2,2), (2,1), (3,3), (3,1); +select * from t3 where a > all (select max(b) from t2 group by a); +a +6 +7 +explain extended select * from t3 where a > all (select max(b) from t2 group by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) +drop table t2, t3; +CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; +INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); +CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647; +INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0); +CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY (`taskgenid`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ; +INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1); +CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status'); +select dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid; +dbid name (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') +-1 Valid 1 +-1 Valid 2 1 +-1 Should Not Return 0 +SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')) AND t4.task_id = taskid; +dbid name +-1 Valid +-1 Valid 2 +drop table t1,t2,t3,t4; +CREATE TABLE t1 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(5); +CREATE TABLE t2 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (2),(6); +select * from t1 where (1,2,6) in (select * from t2); +ERROR 21000: Operand should contain 3 column(s) +DROP TABLE t1,t2; +create table t1 (s1 int); +insert into t1 values (1); +insert into t1 values (2); +set sort_buffer_size = (select s1 from t1); +ERROR 21000: Subquery returns more than 1 row +do (select * from t1); +Warnings: +Error 1242 Subquery returns more than 1 row +drop table t1; +create table t1 (s1 char); +insert into t1 values ('e'); +select * from t1 where 'f' > any (select s1 from t1); +s1 +e +select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +s1 +e +explain extended select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 UNION t1 system NULL NULL NULL NULL 1 100.00 +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 'e' AS `s1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); +CREATE TABLE t2 (code char(5) NOT NULL default '',UNIQUE KEY code (code)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES ('1'),('1226'),('1245'),('1862'),('18623'),('1874'),('1967'),('6'); +select c.number as phone,(select p.code from t2 p where c.number like concat(p.code, '%') order by length(p.code) desc limit 1) as code from t1 c; +phone code +69294728265 6 +18621828126 1862 +89356874041 NULL +95895001874 NULL +drop table t1, t2; +create table t1 (s1 int); +create table t2 (s1 int); +select * from t1 where (select count(*) from t2 where t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'where clause' +select * from t1 where (select count(*) from t2 group by t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +select count(*) from t2 group by t1.s2; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +drop table t1, t2; +CREATE TABLE t1(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC VARCHAR(20) DEFAULT NULL,PRIMARY KEY (COLA, COLB)); +CREATE TABLE t2(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC CHAR(1) NOT NULL,PRIMARY KEY (COLA)); +INSERT INTO t1 VALUES (1,1,'1A3240'), (1,2,'4W2365'); +INSERT INTO t2 VALUES (100, 200, 'C'); +SELECT DISTINCT COLC FROM t1 WHERE COLA = (SELECT COLA FROM t2 WHERE COLB = 200 AND COLC ='C' LIMIT 1); +COLC +DROP TABLE t1, t2; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5); +SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100; +(SELECT a) +1 +2 +3 +4 +5 +DROP TABLE t1; +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +select a, (select max(b) from t1) into outfile "../../tmp/subselect.out.file.1" from t1; +delete from t1; +load data infile "../../tmp/subselect.out.file.1" into table t1; +select * from t1; +a b +1 0.123 +drop table t1; +CREATE TABLE `t1` ( +`id` int(11) NOT NULL auto_increment, +`id_cns` tinyint(3) unsigned NOT NULL default '0', +`tipo` enum('','UNO','DUE') NOT NULL default '', +`anno_dep` smallint(4) unsigned zerofill NOT NULL default '0000', +`particolare` mediumint(8) unsigned NOT NULL default '0', +`generale` mediumint(8) unsigned NOT NULL default '0', +`bis` tinyint(3) unsigned NOT NULL default '0', +PRIMARY KEY (`id`), +UNIQUE KEY `idx_cns_gen_anno` (`anno_dep`,`id_cns`,`generale`,`particolare`), +UNIQUE KEY `idx_cns_par_anno` (`id_cns`,`anno_dep`,`tipo`,`particolare`,`bis`) +); +INSERT INTO `t1` VALUES (1,16,'UNO',1987,2048,9681,0),(2,50,'UNO',1987,1536,13987,0),(3,16,'UNO',1987,2432,14594,0),(4,16,'UNO',1987,1792,13422,0),(5,16,'UNO',1987,1025,10240,0),(6,16,'UNO',1987,1026,7089,0); +CREATE TABLE `t2` ( +`id` tinyint(3) unsigned NOT NULL auto_increment, +`max_anno_dep` smallint(6) unsigned NOT NULL default '0', +PRIMARY KEY (`id`) +); +INSERT INTO `t2` VALUES (16,1987),(50,1990),(51,1990); +SELECT cns.id, cns.max_anno_dep, cns.max_anno_dep = (SELECT s.anno_dep FROM t1 AS s WHERE s.id_cns = cns.id ORDER BY s.anno_dep DESC LIMIT 1) AS PIPPO FROM t2 AS cns; +id max_anno_dep PIPPO +16 1987 1 +50 1990 0 +51 1990 NULL +DROP TABLE t1, t2; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SET SQL_SELECT_LIMIT=1; +select sum(a) from (select * from t1) as a; +sum(a) +6 +select 2 in (select * from t1); +2 in (select * from t1) +1 +SET SQL_SELECT_LIMIT=default; +drop table t1; +CREATE TABLE t1 (a int, b int, INDEX (a)); +INSERT INTO t1 VALUES (1, 1), (1, 2), (1, 3); +SELECT * FROM t1 WHERE a = (SELECT MAX(a) FROM t1 WHERE a = 1) ORDER BY b; +a b +1 1 +1 2 +1 3 +DROP TABLE t1; +create table t1(val varchar(10)); +insert into t1 values ('aaa'), ('bbb'),('eee'),('mmm'),('ppp'); +select count(*) from t1 as w1 where w1.val in (select w2.val from t1 as w2 where w2.val like 'm%') and w1.val in (select w3.val from t1 as w3 where w3.val like 'e%'); +count(*) +0 +drop table t1; +create table t1 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t1 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text11'), (12, 'text12'); +select * from t1 where id not in (select id from t1 where id < 8); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +explain extended select * from t1 where id not in (select id from t1 where id < 8); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`)))))))) +explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY tt ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 100.00 Using where; Using index +Warnings: +Note 1276 Field or reference 'test.tt.id' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(<expr_cache><`test`.`tt`.`id`>(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null))))) +insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001'); +create table t2 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10'); +select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id text id text id text +1 text1 1 text1 1 text1 +2 text2 2 text2 2 text2 +3 text3 3 text3 3 text3 +4 text4 4 text4 4 text4 +5 text5 5 text5 5 text5 +6 text6 6 text6 6 text6 +7 text7 7 text7 7 text7 +8 text8 8 text8 8 text8 +9 text9 9 text9 9 text9 +10 text10 10 text10 10 text10 +11 text11 11 text1 11 text11 +12 text12 12 text2 12 text12 +1000 text1000 NULL NULL 1000 text1000 +1001 text1001 NULL NULL 1000 text1000 +explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE a ALL NULL NULL NULL NULL 14 100.00 +1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2 100.00 +1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using index condition +Warnings: +Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`b`.`id` = `test`.`a`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`) +drop table t1,t2; +create table t1 (a int); +insert into t1 values (1); +explain select benchmark(1000, (select a from t1 where a=sha(rand()))); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 1 +drop table t1; +create table t1(id int); +create table t2(id int); +create table t3(flag int); +select (select * from t3 where id not null) from t1, t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'null) from t1, t2' at line 1 +drop table t1,t2,t3; +CREATE TABLE t1 (id INT); +CREATE TABLE t2 (id INT); +INSERT INTO t1 VALUES (1), (2); +INSERT INTO t2 VALUES (1); +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY t1.id; +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY id; +id c +1 1 +2 0 +DROP TABLE t1,t2; +CREATE TABLE t1 ( a int, b int ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +ALTER TABLE t1 ADD INDEX (a); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a = ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a,2 FROM t1 WHERE b = 2); +a +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +a +1 +2 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') +0- +0- +1- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') +1- +0- +0- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') +0- +1- +0- +DROP TABLE t1; +CREATE TABLE t1 ( a double, b double ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +DROP TABLE t1; +CREATE TABLE t1 ( a char(1), b char(1)); +INSERT INTO t1 VALUES ('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +create table t1 (a int, b int); +insert into t1 values (1,2),(3,4); +select * from t1 up where exists (select * from t1 where t1.a=up.a); +a b +1 2 +3 4 +explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY up ALL NULL NULL NULL NULL 2 100.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.up.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where <expr_cache><`test`.`up`.`a`>(exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`))) +drop table t1; +CREATE TABLE t1 (t1_a int); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b)); +INSERT INTO t2 VALUES (1, 1), (1, 2); +SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1 +HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a); +t1_a t2_a t2_b +1 1 2 +DROP TABLE t1, t2; +CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL); +INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL); +CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL); +INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix'); +SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id; +id name id pet +1 Tim 1 Fido +2 Rebecca 2 Spot +3 NULL 3 Felix +drop table t1,t2; +CREATE TABLE t1 ( a int, b int ); +CREATE TABLE t2 ( c int, d int ); +INSERT INTO t1 VALUES (1,2), (2,3), (3,4); +SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +abc b +1 2 +2 3 +3 4 +INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t2; +c d +1 2 +2 3 +3 4 +CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t3; +abc b +1 2 +2 3 +3 4 +prepare stmt1 from "INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +deallocate prepare stmt1; +select * from t2; +c d +1 2 +2 3 +3 4 +1 2 +2 3 +3 4 +drop table t3; +prepare stmt1 from "CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +select * from t3; +abc b +1 2 +2 3 +3 4 +deallocate prepare stmt1; +DROP TABLE t1, t2, t3; +CREATE TABLE `t1` ( `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t1 values (1); +CREATE TABLE `t2` ( `b` int(11) default NULL, `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t2 values (1,2); +select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1); +a C +1 1 +drop table t1,t2; +create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b)); +insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'), ('Patrik'),('Hakan'); +create table t2 (a int); +insert into t2 values (1),(3),(2),(7); +select a,b from t1 where match(b) against ('Ball') > 0; +a b +1 ball +2 ball games +select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0); +a +1 +2 +drop table t1,t2; +CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin); +CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001'); +SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001'); +IZAVORGANG_ID +D0000000001 +drop table t1; +CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +insert into t1 values (1,1),(1,2),(2,1),(2,2); +insert into t2 values (1,2),(2,2); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop primary key; +alter table t2 add key KEY1 (aid, bid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop key KEY1; +alter table t2 add primary key (bid, aid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +drop table t1,t2; +CREATE TABLE t1 (howmanyvalues bigint, avalue int); +INSERT INTO t1 VALUES (1, 1),(2, 1),(2, 2),(3, 1),(3, 2),(3, 3),(4, 1),(4, 2),(4, 3),(4, 4); +SELECT howmanyvalues, count(*) from t1 group by howmanyvalues; +howmanyvalues count(*) +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +CREATE INDEX t1_howmanyvalues_idx ON t1 (howmanyvalues); +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues+1 = a.howmanyvalues+1) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.avalue) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 1 +3 1 +4 1 +drop table t1; +create table t1 (x int); +select (select b.x from t1 as b where b.x=a.x) from t1 as a where a.x=2 group by a.x; +(select b.x from t1 as b where b.x=a.x) +drop table t1; +CREATE TABLE `t1` ( `master` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `slave` int(10) unsigned NOT NULL default '0', `access` int(10) unsigned NOT NULL default '0', UNIQUE KEY `access_u` (`master`,`map`,`slave`)); +INSERT INTO `t1` VALUES (1,0,0,700),(1,1,1,400),(1,5,5,400),(1,12,12,400),(1,12,32,400),(4,12,32,400); +CREATE TABLE `t2` ( `id` int(10) unsigned NOT NULL default '0', `pid` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `level` tinyint(4) unsigned NOT NULL default '0', `title` varchar(255) default NULL, PRIMARY KEY (`id`,`pid`,`map`), KEY `level` (`level`), KEY `id` (`id`,`map`)) ; +INSERT INTO `t2` VALUES (6,5,12,7,'a'),(12,0,0,7,'a'),(12,1,0,7,'a'),(12,5,5,7,'a'),(12,5,12,7,'a'); +SELECT b.sc FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ERROR 42S22: Unknown column 'b.sc' in 'field list' +SELECT b.ac FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ac +700 +NULL +drop tables t1,t2; +create table t1 (a int not null, b int not null, c int, primary key (a,b)); +insert into t1 values (1,1,1), (2,2,2), (3,3,3); +set @b:= 0; +explain select sum(a) from t1 where b > @b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 8 NULL 3 Using where; Using index +set @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +do @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +drop table t1; +set @got_val= (SELECT 1 FROM (SELECT 'A' as my_col) as T1 ) ; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,1),(1,2),(1,3),(2,4),(2,5); +insert into t2 values (1,3),(2,1); +select distinct a,b, (select max(b) from t2 where t1.b=t2.a) from t1 order by t1.b; +a b (select max(b) from t2 where t1.b=t2.a) +1 1 3 +1 2 1 +1 3 NULL +2 4 NULL +2 5 NULL +drop table t1, t2; +create table t1 (id int); +create table t2 (id int, body text, fulltext (body)); +insert into t1 values(1),(2),(3); +insert into t2 values (1,'test'), (2,'mysql'), (3,'test'), (4,'test'); +select count(distinct id) from t1 where id in (select id from t2 where match(body) against ('mysql' in boolean mode)); +count(distinct id) +1 +drop table t2,t1; +create table t1 (s1 int,s2 int); +insert into t1 values (20,15); +select * from t1 where (('a',null) <=> (select 'a',s2 from t1 where s1 = 0)); +s1 s2 +drop table t1; +create table t1 (s1 int); +insert into t1 values (1),(null); +select * from t1 where s1 < all (select s1 from t1); +s1 +select s1, s1 < all (select s1 from t1) from t1; +s1 s1 < all (select s1 from t1) +1 0 +NULL NULL +drop table t1; +CREATE TABLE t1 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '' +) ENGINE=MyISAM; +INSERT INTO t1 VALUES ('XXX','Xxxxx','Oceania','Xxxxxx',26.00,0,0,0,0,0,'Xxxxx','Xxxxx','Xxxxx',NULL,'XX'); +INSERT INTO t1 VALUES ('ASM','American Samoa','Oceania','Polynesia',199.00,0,68000,75.1,334.00,NULL,'Amerika Samoa','US Territory','George W. Bush',54,'AS'); +INSERT INTO t1 VALUES ('ATF','French Southern territories','Antarctica','Antarctica',7780.00,0,0,NULL,0.00,NULL,'Terres australes françaises','Nonmetropolitan Territory of France','Jacques Chirac',NULL,'TF'); +INSERT INTO t1 VALUES ('UMI','United States Minor Outlying Islands','Oceania','Micronesia/Caribbean',16.00,0,0,NULL,0.00,NULL,'United States Minor Outlying Islands','Dependent Territory of the US','George W. Bush',NULL,'UM'); +/*!40000 ALTER TABLE t1 ENABLE KEYS */; +SELECT DISTINCT Continent AS c FROM t1 outr WHERE +Code <> SOME ( SELECT Code FROM t1 WHERE Continent = outr.Continent AND +Population < 200); +c +Oceania +drop table t1; +create table t1 (a1 int); +create table t2 (b1 int); +select * from t1 where a2 > any(select b1 from t2); +ERROR 42S22: Unknown column 'a2' in 'IN/ALL/ANY subquery' +select * from t1 where a1 > any(select b1 from t2); +a1 +drop table t1,t2; +create table t1 (a integer, b integer); +select (select * from t1) = (select 1,2); +(select * from t1) = (select 1,2) +NULL +select (select 1,2) = (select * from t1); +(select 1,2) = (select * from t1) +NULL +select row(1,2) = ANY (select * from t1); +row(1,2) = ANY (select * from t1) +0 +select row(1,2) != ALL (select * from t1); +row(1,2) != ALL (select * from t1) +1 +drop table t1; +create table t1 (a integer, b integer); +select row(1,(2,2)) in (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select row(1,(2,2)) = (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select (select * from t1) = row(1,(2,2)); +ERROR 21000: Operand should contain 1 column(s) +drop table t1; +create table t1 (a integer); +insert into t1 values (1); +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx ; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 as xx, 1 = ALL ( select 1 from t1 where 1 = xx ); +xx 1 = ALL ( select 1 from t1 where 1 = xx ) +1 1 +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx from DUAL; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +drop table t1; +CREATE TABLE t1 ( +categoryId int(11) NOT NULL, +courseId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +attributes text NOT NULL +); +INSERT INTO t1 VALUES (1,41,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(1,86,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(1,87,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,52,'2004-03-15','2004-10-01','2004-03-15','2004-09-17',''), +(2,53,'2004-03-16','2004-10-01','2004-03-16','2004-09-17',''), +(2,88,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,89,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(3,51,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(5,12,'2004-02-18','2010-01-01','2004-02-18','2004-02-18',''); +CREATE TABLE t2 ( +userId int(11) NOT NULL, +courseId int(11) NOT NULL, +date datetime NOT NULL +); +INSERT INTO t2 VALUES (5141,71,'2003-11-18'), +(5141,72,'2003-11-25'),(5141,41,'2004-08-06'), +(5141,52,'2004-08-06'),(5141,53,'2004-08-06'), +(5141,12,'2004-08-06'),(5141,86,'2004-10-21'), +(5141,87,'2004-10-21'),(5141,88,'2004-10-21'), +(5141,89,'2004-10-22'),(5141,51,'2004-10-26'); +CREATE TABLE t3 ( +groupId int(11) NOT NULL, +parentId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +ordering int(11) +); +INSERT INTO t3 VALUES (12,9,'1000-01-01','3999-12-31','2004-01-29','2004-01-29',NULL); +CREATE TABLE t4 ( +id int(11) NOT NULL, +groupTypeId int(11) NOT NULL, +groupKey varchar(50) NOT NULL, +name text, +ordering int(11), +description text, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t4 VALUES (9,5,'stationer','stationer',0,'Stationer','2004-01-29','2004-01-29'), +(12,5,'group2','group2',0,'group2','2004-01-29','2004-01-29'); +CREATE TABLE t5 ( +userId int(11) NOT NULL, +groupId int(11) NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t5 VALUES (5141,12,'2004-08-06','2004-08-06'); +select +count(distinct t2.userid) pass, +groupstuff.*, +count(t2.courseid) crse, +t1.categoryid, +t2.courseid, +date_format(date, '%b%y') as colhead +from t2 +join t1 on t2.courseid=t1.courseid +join +( +select +t5.userid, +parentid, +parentgroup, +childid, +groupname, +grouptypeid +from t5 +join +( +select t4.id as parentid, +t4.name as parentgroup, +t4.id as childid, +t4.name as groupname, +t4.grouptypeid +from t4 +) as gin on t5.groupid=gin.childid +) as groupstuff on t2.userid = groupstuff.userid +group by +groupstuff.groupname, colhead , t2.courseid; +pass userid parentid parentgroup childid groupname grouptypeid crse categoryid courseid colhead +1 5141 12 group2 12 group2 5 1 5 12 Aug04 +1 5141 12 group2 12 group2 5 1 1 41 Aug04 +1 5141 12 group2 12 group2 5 1 2 52 Aug04 +1 5141 12 group2 12 group2 5 1 2 53 Aug04 +1 5141 12 group2 12 group2 5 1 3 51 Oct04 +1 5141 12 group2 12 group2 5 1 1 86 Oct04 +1 5141 12 group2 12 group2 5 1 1 87 Oct04 +1 5141 12 group2 12 group2 5 1 2 88 Oct04 +1 5141 12 group2 12 group2 5 1 2 89 Oct04 +drop table t1, t2, t3, t4, t5; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SELECT 1 FROM t1 WHERE (SELECT 1) in (SELECT 1); +1 +1 +1 +1 +drop table t1; +create table t1 (a int); +create table t2 (a int); +insert into t1 values (1),(2); +insert into t2 values (0),(1),(2),(3); +select a from t2 where a in (select a from t1); +a +1 +2 +select a from t2 having a in (select a from t1); +a +1 +2 +prepare stmt1 from "select a from t2 where a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +prepare stmt1 from "select a from t2 having a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +drop table t1, t2; +create table t1 (a int, b int); +insert into t1 values (1,2); +select 1 = (select * from t1); +ERROR 21000: Operand should contain 1 column(s) +select (select * from t1) = 1; +ERROR 21000: Operand should contain 2 column(s) +select (1,2) = (select a from t1); +ERROR 21000: Operand should contain 2 column(s) +select (select a from t1) = (1,2); +ERROR 21000: Operand should contain 1 column(s) +select (1,2,3) = (select * from t1); +ERROR 21000: Operand should contain 3 column(s) +select (select * from t1) = (1,2,3); +ERROR 21000: Operand should contain 2 column(s) +drop table t1; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (one int, two int, flag char(1)); +CREATE TABLE t2 (one int, two int, flag char(1)); +INSERT INTO t1 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +INSERT INTO t2 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t2 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t1 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +insert into t2 values (null,null,'N'); +insert into t2 values (null,3,'0'); +insert into t2 values (null,5,'0'); +insert into t2 values (10,null,'0'); +insert into t1 values (10,3,'0'); +insert into t1 values (10,5,'0'); +insert into t1 values (10,10,'0'); +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +one two +5 6 +7 8 +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`two` = `test`.`t1`.`two`) and (`test`.`t2`.`one` = `test`.`t1`.`one`) and (`test`.`t2`.`flag` = 'N')) +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +DROP TABLE t1,t2; +CREATE TABLE t1 (a char(5), b char(5)); +INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa'); +SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb')); +a b +aaa aaa +DROP TABLE t1; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int, b int); +CREATE TABLE t3 (b int NOT NULL); +INSERT INTO t1 VALUES (1), (2), (3), (4); +INSERT INTO t2 VALUES (1,10), (3,30); +SELECT * FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10; +a b b +SELECT * FROM t1 +WHERE t1.a NOT IN (SELECT a FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10); +a +1 +2 +3 +4 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (f1 INT); +CREATE TABLE t2 (f2 INT); +INSERT INTO t1 VALUES (1); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2); +f1 +1 +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE 1=0); +f1 +1 +INSERT INTO t2 VALUES (1); +INSERT INTO t2 VALUES (2); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE f2=0); +f1 +1 +DROP TABLE t1, t2; +select 1 from dual where 1 < any (select 2); +1 +1 +select 1 from dual where 1 < all (select 2); +1 +1 +select 1 from dual where 2 > any (select 1); +1 +1 +select 1 from dual where 2 > all (select 1); +1 +1 +select 1 from dual where 1 < any (select 2 from dual); +1 +1 +select 1 from dual where 1 < all (select 2 from dual where 1!=1); +1 +1 +create table t1 (s1 char); +insert into t1 values (1),(2); +select * from t1 where (s1 < any (select s1 from t1)); +s1 +1 +select * from t1 where not (s1 < any (select s1 from t1)); +s1 +2 +select * from t1 where (s1 < ALL (select s1+1 from t1)); +s1 +1 +select * from t1 where not(s1 < ALL (select s1+1 from t1)); +s1 +2 +select * from t1 where (s1+1 = ANY (select s1 from t1)); +s1 +1 +select * from t1 where NOT(s1+1 = ANY (select s1 from t1)); +s1 +2 +select * from t1 where (s1 = ALL (select s1/s1 from t1)); +s1 +1 +select * from t1 where NOT(s1 = ALL (select s1/s1 from t1)); +s1 +2 +drop table t1; +create table t1 ( +retailerID varchar(8) NOT NULL, +statusID int(10) unsigned NOT NULL, +changed datetime NOT NULL, +UNIQUE KEY retailerID (retailerID, statusID, changed) +); +INSERT INTO t1 VALUES("0026", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0026", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0037", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0037", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0048", "1", "2006-01-06 12:37:50"); +INSERT INTO t1 VALUES("0059", "1", "2006-01-06 12:37:50"); +select * from t1 r1 +where (r1.retailerID,(r1.changed)) in +(SELECT r2.retailerId,(max(changed)) from t1 r2 +group by r2.retailerId); +retailerID statusID changed +0026 2 2006-01-06 12:25:53 +0037 2 2006-01-06 12:25:53 +0048 1 2006-01-06 12:37:50 +0059 1 2006-01-06 12:37:50 +drop table t1; +create table t1(a int, primary key (a)); +insert into t1 values (10); +create table t2 (a int primary key, b varchar(32), c int, unique key b(c, b)); +insert into t2(a, c, b) values (1,10,'359'), (2,10,'35988'), (3,10,'35989'); +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +a a b +10 3 35989 +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +a a b +10 1 359 +drop table t1,t2; +CREATE TABLE t1 ( +field1 int NOT NULL, +field2 int NOT NULL, +field3 int NOT NULL, +PRIMARY KEY (field1,field2,field3) +); +CREATE TABLE t2 ( +fieldA int NOT NULL, +fieldB int NOT NULL, +PRIMARY KEY (fieldA,fieldB) +); +INSERT INTO t1 VALUES +(1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1); +INSERT INTO t2 VALUES (1,1), (1,2), (1,3); +SELECT field1, field2, COUNT(*) +FROM t1 GROUP BY field1, field2; +field1 field2 COUNT(*) +1 1 2 +1 2 3 +1 3 1 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) >= ALL (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 2 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) < ANY (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 1 +1 3 +DROP TABLE t1, t2; +CREATE TABLE t1(a int, INDEX (a)); +INSERT INTO t1 VALUES (1), (3), (5), (7); +INSERT INTO t1 VALUES (NULL); +CREATE TABLE t2(a int); +INSERT INTO t2 VALUES (1),(2),(3); +EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index; Full scan on NULL key +SELECT a, a IN (SELECT a FROM t1) FROM t2; +a a IN (SELECT a FROM t1) +1 1 +2 NULL +3 1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a DATETIME); +INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25'); +CREATE TABLE t2 AS SELECT +(SELECT a FROM t1 WHERE a < '2000-01-01') AS sub_a +FROM t1 WHERE a > '2000-01-01'; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `sub_a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +CREATE TABLE t3 AS (SELECT a FROM t1 WHERE a < '2000-01-01') UNION (SELECT a FROM t1 WHERE a > '2000-01-01'); +SHOW CREATE TABLE t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) > 0; +a +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +a +1 +2 +EXPLAIN SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +DROP TABLE t1; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2), (4), (1), (3); +CREATE TABLE t2 (b int, c int); +INSERT INTO t2 VALUES +(2,1), (1,3), (2,1), (4,4), (2,2), (1,4); +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2 ); +a +2 +4 +1 +3 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2), a; +a +1 +2 +3 +4 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1), a; +ERROR 21000: Subquery returns more than 1 row +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 2); +b MAX(c) +1 4 +2 2 +4 4 +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +1 +2 +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +4 +1 +3 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +1 +3 +4 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +DROP TABLE t1,t2; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +insert into t1 values(2.2); +select * from t1 where df <= all (select avg(df) from t1 group by df); +df +1.1 +select * from t1 where df >= all (select avg(df) from t1 group by df); +df +2.2 +drop table t1; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +select 1.1 * exists(select * from t1); +1.1 * exists(select * from t1) +1.1 +drop table t1; +CREATE TABLE t1 ( +grp int(11) default NULL, +a decimal(10,2) default NULL); +insert into t1 values (1, 1), (2, 2), (2, 3), (3, 4), (3, 5), (3, 6), (NULL, NULL); +select * from t1; +grp a +1 1.00 +2 2.00 +2 3.00 +3 4.00 +3 5.00 +3 6.00 +NULL NULL +select min(a) from t1 group by grp; +min(a) +NULL +1.00 +2.00 +4.00 +drop table t1; +CREATE table t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 WHERE c2 IN (1); +c1 c2 +1 1 +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE c2 IN ( SELECT c2 FROM t2 WHERE c2 IN ( 1 ) ); +c1 c2 +1 1 +DROP TABLE t1,t2; +CREATE TABLE t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +INSERT INTO t1 VALUES ( 6 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +INSERT INTO t2 VALUES ( 6 ); +CREATE TABLE t3 ( c3 integer ); +INSERT INTO t3 VALUES ( 7 ); +INSERT INTO t3 VALUES ( 8 ); +SELECT c1,c2 FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE EXISTS (SELECT c3 FROM t3 WHERE c2 IS NULL ); +c1 c2 +2 NULL +3 NULL +DROP TABLE t1,t2,t3; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +CREATE TABLE t1 (EMPNUM CHAR(3)); +CREATE TABLE t2 (EMPNUM CHAR(3) ); +INSERT INTO t1 VALUES ('E1'),('E2'); +INSERT INTO t2 VALUES ('E1'); +DELETE FROM t1 +WHERE t1.EMPNUM NOT IN +(SELECT t2.EMPNUM +FROM t2 +WHERE t1.EMPNUM = t2.EMPNUM); +select * from t1; +EMPNUM +E1 +DROP TABLE t1,t2; +CREATE TABLE t1(select_id BIGINT, values_id BIGINT); +INSERT INTO t1 VALUES (1, 1); +CREATE TABLE t2 (select_id BIGINT, values_id BIGINT, +PRIMARY KEY(select_id,values_id)); +INSERT INTO t2 VALUES (0, 1), (0, 2), (0, 3), (1, 5); +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id IN (1, 0)); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id BETWEEN 0 AND 1); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id = 0 OR select_id = 1); +values_id +1 +DROP TABLE t1, t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (c int, d int); +CREATE TABLE t3 (e int); +INSERT INTO t1 VALUES +(1,10), (2,10), (1,20), (2,20), (3,20), (2,30), (4,40); +INSERT INTO t2 VALUES +(2,10), (2,20), (4,10), (5,10), (3,20), (2,40); +INSERT INTO t3 VALUES (10), (30), (10), (20) ; +SELECT a, MAX(b), MIN(b) FROM t1 GROUP BY a; +a MAX(b) MIN(b) +1 20 10 +2 30 10 +3 20 20 +4 40 40 +SELECT * FROM t2; +c d +2 10 +2 20 +4 10 +5 10 +3 20 +2 40 +SELECT * FROM t3; +e +10 +30 +10 +20 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>20); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)<d); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>d); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d >= SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d > SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e < d)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE MIN(b) < d AND +EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +SELECT a, SUM(a) FROM t1 GROUP BY a; +a SUM(a) +1 2 +2 6 +3 3 +4 4 +SELECT a FROM t1 +WHERE EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c) GROUP BY a; +a +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c); +a +1 +3 +4 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c) GROUP BY a; +a +1 +2 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c); +a +1 +2 +1 +2 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a < ALL(SELECT t2.c FROM t2 GROUP BY t2.c +HAVING EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +1 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 +WHERE SUM(t1.a+t2.c) < t3.e/4)); +ERROR HY000: Invalid use of group function +SELECT t1.a from t1 GROUP BY t1.a HAVING AVG(SUM(t1.b)) > 20; +ERROR HY000: Invalid use of group function +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(t2.c+SUM(t1.b)) > 20); +a +2 +3 +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(SUM(t1.b)) > 20); +a +2 +4 +SELECT t1.a, SUM(b) AS sum FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING t2.c+sum > 20); +a sum +2 60 +3 20 +4 40 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a varchar(5), b varchar(10)); +INSERT INTO t1 VALUES +('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2), +('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +ALTER TABLE t1 ADD INDEX(a); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 DEPENDENT SUBQUERY t1 index NULL a 8 NULL 1 Using filesort +DROP TABLE t1; +create table t1( f1 int,f2 int); +insert into t1 values (1,1),(2,2); +select tt.t from (select 'crash1' as t, f2 from t1) as tt left join t1 on tt.t = 'crash2' and tt.f2 = t1.f2 where tt.t = 'crash1'; +t +crash1 +crash1 +drop table t1; +create table t1 (c int, key(c)); +insert into t1 values (1142477582), (1142455969); +create table t2 (a int, b int); +insert into t2 values (2, 1), (1, 0); +delete from t1 where c <= 1140006215 and (select b from t2 where a = 2) = 1; +drop table t1, t2; +CREATE TABLE t1 (a INT); +CREATE VIEW v1 AS SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +CREATE VIEW v2 AS SELECT * FROM t1 WHERE no_such_column = (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'IN/ALL/ANY subquery' +DROP TABLE t1; +create table t1 (i int, j bigint); +insert into t1 values (1, 2), (2, 2), (3, 2); +select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3; +min(i) +1 +drop table t1; +CREATE TABLE t1 (i BIGINT UNSIGNED); +INSERT INTO t1 VALUES (10000000000000000000); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (i BIGINT UNSIGNED); +INSERT INTO t2 VALUES (10000000000000000000); +INSERT INTO t2 VALUES (1); +/* simple test */ +SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i; +i +10000000000000000000 +1 +/* subquery test */ +SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2); +i +10000000000000000000 +/* subquery test with cast*/ +SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED); +i +10000000000000000000 +DROP TABLE t1; +DROP TABLE t2; +CREATE TABLE t1 ( +id bigint(20) unsigned NOT NULL auto_increment, +name varchar(255) NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES +(1, 'Balazs'), (2, 'Joe'), (3, 'Frank'); +CREATE TABLE t2 ( +id bigint(20) unsigned NOT NULL auto_increment, +mid bigint(20) unsigned NOT NULL, +date date NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t2 VALUES +(1, 1, '2006-03-30'), (2, 2, '2006-04-06'), (3, 3, '2006-04-13'), +(4, 2, '2006-04-20'), (5, 1, '2006-05-01'); +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 3, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 NULL +2 Joe 2006-04-20 NULL +3 Frank 2006-04-13 NULL +SELECT *, +(SELECT COUNT(*) FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_count +FROM t1; +id name date_count +1 Balazs NULL +2 Joe NULL +3 Frank NULL +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 2006-03-30 +2 Joe 2006-04-20 2006-04-06 +3 Frank 2006-04-13 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime NOT NULL default '0000-00-00 00:00:00', +PRIMARY KEY (i1,i2,t) +); +INSERT INTO t1 VALUES +(24,1,'2005-03-03 16:31:31'),(24,1,'2005-05-27 12:40:07'), +(24,1,'2005-05-27 12:40:08'),(24,1,'2005-05-27 12:40:10'), +(24,1,'2005-05-27 12:40:25'),(24,1,'2005-05-27 12:40:30'), +(24,2,'2005-03-03 13:43:05'),(24,2,'2005-03-03 16:23:31'), +(24,2,'2005-03-03 16:31:30'),(24,2,'2005-05-27 12:37:02'), +(24,2,'2005-05-27 12:40:06'); +CREATE TABLE t2 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime default NULL, +PRIMARY KEY (i1) +); +INSERT INTO t2 VALUES (24,1,'2006-06-20 12:29:40'); +EXPLAIN +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY t1 index NULL PRIMARY 16 NULL 11 Using where; Using index +2 DEPENDENT SUBQUERY t1 range PRIMARY PRIMARY 16 NULL 5 Using where; Using index +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +i1 i2 t i1 i2 t +24 1 2005-05-27 12:40:30 24 1 2006-06-20 12:29:40 +DROP TABLE t1, t2; +CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b)); +insert into t1 (a) values (FLOOR(rand() * 100)); +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +SELECT a, +(SELECT REPEAT(' ',250) FROM t1 i1 +WHERE i1.b=t1.a ORDER BY RAND() LIMIT 1) AS a +FROM t1 ORDER BY a LIMIT 5; +a a +0 NULL +0 NULL +0 NULL +0 NULL +0 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT); +INSERT INTO t2 values (1); +INSERT INTO t1 VALUES (1,1),(1,2),(2,3),(3,4); +SELECT (SELECT COUNT(DISTINCT t1.b) from t2) FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2) +2 +1 +1 +SELECT (SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +2 +1 +1 +SELECT COUNT(DISTINCT t1.b), (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b)) +2 2 +1 1 +1 1 +SELECT COUNT(DISTINCT t1.b), +(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +2 2 +1 1 +1 1 +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a; +( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +2 +1 +1 +SELECT ( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +FROM t1 t2 +GROUP BY t2.a; +( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +2 +2 +2 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, PRIMARY KEY (b)); +CREATE TABLE t2 (x int auto_increment, y int, z int, +PRIMARY KEY (x), FOREIGN KEY (y) REFERENCES t1 (b)); +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 select RAND()*1000, A.a + 10*(B.a+10*(C.a+10*D.a)) +from t3 A, t3 B, t3 C, t3 D where D.a<3; +insert into t2(y,z) select t1.b, RAND()*1000 from t1, t3; +SET SESSION sort_buffer_size = 32 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +SET SESSION sort_buffer_size = 8 * 1024 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id char(4) PRIMARY KEY, c int); +CREATE TABLE t2 (c int); +INSERT INTO t1 VALUES ('aa', 1); +INSERT INTO t2 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +INSERT INTO t2 VALUES (2); +CREATE TABLE t3 (c int); +INSERT INTO t3 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1(f1 int); +CREATE TABLE t2(f2 int, f21 int, f3 timestamp); +INSERT INTO t1 VALUES (1),(1),(2),(2); +INSERT INTO t2 VALUES (1,1,"2004-02-29 11:11:11"), (2,2,"2004-02-29 11:11:11"); +SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1; +sq +2 +4 +SELECT (SELECT SUM(1) FROM t2 ttt GROUP BY t2.f3 LIMIT 1) AS tt FROM t2; +tt +2 +2 +PREPARE stmt1 FROM 'SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1'; +EXECUTE stmt1; +sq +2 +4 +EXECUTE stmt1; +sq +2 +4 +DEALLOCATE PREPARE stmt1; +SELECT f2, AVG(f21), +(SELECT t.f3 FROM t2 AS t WHERE t2.f2=t.f2 AND t.f3=MAX(t2.f3)) AS test +FROM t2 GROUP BY f2; +f2 AVG(f21) test +1 1.0000 2004-02-29 11:11:11 +2 2.0000 2004-02-29 11:11:11 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL); +INSERT INTO t1 VALUES +(1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'), +(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'), (3,3,'j'), +(3,2,'k'), (3,1,'l'), (1,9,'m'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) AS test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +DROP TABLE t1; +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +DROP TABLE IF EXISTS t1xt2; +CREATE TABLE t1 ( +id_1 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t2 ( +id_2 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t1xt2 ( +id_1 int(5) NOT NULL, +id_2 int(5) NOT NULL +); +INSERT INTO t1 VALUES (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd'); +INSERT INTO t2 VALUES (2, 'bb'), (3, 'cc'), (4, 'dd'), (12, 'aa'); +INSERT INTO t1xt2 VALUES (2, 2), (3, 3), (4, 4); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +3 +4 +insert INTO t1xt2 VALUES (1, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +2 +3 +4 +insert INTO t1xt2 VALUES (2, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +3 +4 +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t1xt2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (3), (1), (2); +SELECT 'this is ' 'a test.' AS col1, a AS col2 FROM t1; +col1 col2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +SELECT * FROM (SELECT 'this is ' 'a test.' AS col1, a AS t2 FROM t1) t; +col1 t2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +DROP table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*), a, +(SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a, +(SELECT MIN(m) FROM t2 WHERE m = count(*)) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT MIN(m) FROM t2 WHERE m = count(*)) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a +FROM t1 GROUP BY a +HAVING (SELECT MIN(m) FROM t2 WHERE m = count(*)) > 1; +COUNT(*) a +2 2 +3 3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +2 2 2 +3 3 3 +1 4 1,1 +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +2 2 3 +3 3 4 +1 4 2,2 +DROP table t1,t2; +CREATE TABLE t1 (a int, b INT, d INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t1 VALUES (1,1,0,'a'), (1,2,0,'b'), (1,3,0,'c'), (1,4,0,'d'), +(1,5,0,'e'), (2,1,0,'f'), (2,2,0,'g'), (2,3,0,'h'), (3,4,0,'i'), (3,3,0,'j'), +(3,2,0,'k'), (3,1,0,'l'), (1,9,0,'m'), (1,0,10,'n'), (2,0,5,'o'), (3,0,7,'p'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a x, MAX(b), +(SELECT t.c FROM t1 AS t WHERE x=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +x MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a, AVG(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=AVG(t1.b)) AS test +FROM t1 WHERE t1.d=0 GROUP BY a; +a AVG(b) test +1 4.0000 d +2 2.0000 g +3 2.5000 NULL +SELECT tt.a, +(SELECT (SELECT c FROM t1 as t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt; +a test +1 n +1 n +1 n +1 n +1 n +1 n +1 n +2 o +2 o +2 o +2 o +3 p +3 p +3 p +3 p +3 p +SELECT tt.a, +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +SELECT tt.a, MAX( +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1)) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +DROP TABLE t1; +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 values (1),(1),(1),(1); +CREATE TABLE t2 (x INT); +INSERT INTO t1 values (1000),(1001),(1002); +SELECT SUM( (SELECT COUNT(a) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT SUM( (SELECT SUM(COUNT(a)) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT COUNT(1) FROM DUAL; +COUNT(1) +1 +SELECT SUM( (SELECT AVG( (SELECT t1.a FROM t2) ) FROM DUAL) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING t1.a < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +SELECT t1.a as XXA, +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING XXA < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, KEY (a)); +INSERT INTO t1 VALUES (1,1),(2,1); +EXPLAIN SELECT 1 FROM t1 WHERE a = (SELECT COUNT(*) FROM t1 GROUP BY b); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref a a 5 const 1 Using where; Using index +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +DROP TABLE t1; +CREATE TABLE t1 (id int NOT NULL, st CHAR(2), INDEX idx(id)); +INSERT INTO t1 VALUES +(3,'FL'), (2,'GA'), (4,'FL'), (1,'GA'), (5,'NY'), (7,'FL'), (6,'NY'); +CREATE TABLE t2 (id int NOT NULL, INDEX idx(id)); +INSERT INTO t2 VALUES (7), (5), (1), (3); +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +3 FL +1 GA +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +1 GA +3 FL +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +2 GA +4 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +2 GA +4 FL +DROP TABLE t1,t2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +EXPLAIN EXTENDED +SELECT * FROM (SELECT count(*) FROM t1 GROUP BY a) as res; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `res`.`count(*)` AS `count(*)` from (select count(0) AS `count(*)` from `test`.`t1` group by `test`.`t1`.`a`) `res` +DROP TABLE t1; +CREATE TABLE t1 ( +a varchar(255) default NULL, +b timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, +INDEX idx(a,b) +); +CREATE TABLE t2 ( +a varchar(255) default NULL +); +INSERT INTO t1 VALUES ('abcdefghijk','2007-05-07 06:00:24'); +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO `t1` VALUES ('asdf','2007-02-08 01:11:26'); +INSERT INTO `t2` VALUES ('abcdefghijk'); +INSERT INTO `t2` VALUES ('asdf'); +SET session sort_buffer_size=8192; +SELECT (SELECT 1 FROM t1 WHERE t1.a=t2.a ORDER BY t1.b LIMIT 1) AS d1 FROM t2; +d1 +1 +1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INTEGER, b INTEGER); +CREATE TABLE t2 (x INTEGER); +INSERT INTO t1 VALUES (1,11), (2,22), (2,22); +INSERT INTO t2 VALUES (1), (2); +SELECT a, COUNT(b), (SELECT COUNT(b) FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT a, COUNT(b), (SELECT COUNT(b)+0 FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a)/AVG(t2.x) FROM t2) FROM t1; +(SELECT SUM(t1.a)/AVG(t2.x) FROM t2) +3.3333 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (1, 2), (1,3), (1,4), (2,1), (2,2); +SELECT a1.a, COUNT(*) FROM t1 a1 WHERE a1.a = 1 +AND EXISTS( SELECT a2.a FROM t1 a2 WHERE a2.a = a1.a) +GROUP BY a1.a; +a COUNT(*) +1 3 +DROP TABLE t1; +CREATE TABLE t1 (a INT); +CREATE TABLE t2 (a INT); +INSERT INTO t1 VALUES (1),(2); +INSERT INTO t2 VALUES (1),(2); +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=0) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=0) +NULL +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=1) +3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a1 INT, a2 INT); +CREATE TABLE t2 (b1 INT, b2 INT); +INSERT INTO t1 VALUES (100, 200); +INSERT INTO t1 VALUES (101, 201); +INSERT INTO t2 VALUES (101, 201); +INSERT INTO t2 VALUES (103, 203); +SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1; +((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL +0 +0 +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 BINARY(5), s2 VARBINARY(5)); +INSERT INTO t1 VALUES (0x41,0x41), (0x42,0x42), (0x43,0x43); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +CREATE INDEX I1 ON t1 (s1); +CREATE INDEX I2 ON t1 (s2); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +TRUNCATE t1; +INSERT INTO t1 VALUES (0x41,0x41); +SELECT * FROM t1 WHERE s1 = (SELECT s2 FROM t1); +s1 s2 +DROP TABLE t1; +CREATE TABLE t1 (a1 VARBINARY(2) NOT NULL DEFAULT '0', PRIMARY KEY (a1)); +CREATE TABLE t2 (a2 BINARY(2) default '0', INDEX (a2)); +CREATE TABLE t3 (a3 BINARY(2) default '0'); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT LEFT(t2.a2, 1) FROM t2,t3 WHERE t3.a3=t2.a2; +LEFT(t2.a2, 1) +1 +2 +3 +SELECT t1.a1, t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) FROM t1; +a1 t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) +1 0 +2 0 +3 0 +4 0 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a1 BINARY(3) PRIMARY KEY, b1 VARBINARY(3)); +CREATE TABLE t2 (a2 VARBINARY(3) PRIMARY KEY); +CREATE TABLE t3 (a3 VARBINARY(3) PRIMARY KEY); +INSERT INTO t1 VALUES (1,10), (2,20), (3,30), (4,40); +INSERT INTO t2 VALUES (2), (3), (4), (5); +INSERT INTO t3 VALUES (10), (20), (30); +SELECT LEFT(t1.a1,1) FROM t1,t3 WHERE t1.b1=t3.a3; +LEFT(t1.a1,1) +1 +2 +3 +SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); +a2 +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); +INSERT INTO t1 VALUES ('a', 'aa'); +INSERT INTO t1 VALUES ('a', 'aaa'); +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE INDEX I1 ON t1 (a); +CREATE INDEX I2 ON t1 (b); +EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1) +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10)); +INSERT INTO t2 SELECT * FROM t1; +CREATE INDEX I1 ON t2 (a); +CREATE INDEX I2 ON t2 (b); +EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t2 ref I1 I1 4 test.t2.b 2 Using where; Using index; FirstMatch(t2) +SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +a b +EXPLAIN +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL I2 NULL NULL NULL 2 Using where +1 PRIMARY t1 ref I1 I1 2 test.t1.b 2 Using where; Using index; FirstMatch(t1) +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(a INT, b INT); +INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1_outer ALL NULL NULL NULL NULL 4 Using where; Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 4 Using where +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +out_a MIN(b) +1 2 +2 4 +DROP TABLE t1; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(f11 int, f12 int); +create table t2(f21 int unsigned not null, f22 int, f23 varchar(10)); +insert into t1 values(1,1),(2,2), (3, 3); +insert into t2 +select -1 , (@a:=(A.a + 10 * (B.a + 10 * (C.a+10*D.a))))/5000 + 1, @a +from t0 A, t0 B, t0 C, t0 D; +set session sort_buffer_size= 33*1024; +select count(*) from t1 where f12 = +(select f22 from t2 where f22 = f12 order by f21 desc, f22, f23 limit 1); +count(*) +3 +drop table t0,t1,t2; +CREATE TABLE t4 ( +f7 varchar(32) collate utf8_bin NOT NULL default '', +f10 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f7) +); +INSERT INTO t4 VALUES(1,1), (2,null); +CREATE TABLE t2 ( +f4 varchar(32) collate utf8_bin NOT NULL default '', +f2 varchar(50) collate utf8_bin default NULL, +f3 varchar(10) collate utf8_bin default NULL, +PRIMARY KEY (f4), +UNIQUE KEY uk1 (f2) +); +INSERT INTO t2 VALUES(1,1,null), (2,2,null); +CREATE TABLE t1 ( +f8 varchar(32) collate utf8_bin NOT NULL default '', +f1 varchar(10) collate utf8_bin default NULL, +f9 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f8) +); +INSERT INTO t1 VALUES (1,'P',1), (2,'P',1), (3,'R',2); +CREATE TABLE t3 ( +f6 varchar(32) collate utf8_bin NOT NULL default '', +f5 varchar(50) collate utf8_bin default NULL, +PRIMARY KEY (f6) +); +INSERT INTO t3 VALUES (1,null), (2,null); +SELECT +IF(t1.f1 = 'R', a1.f2, t2.f2) AS a4, +IF(t1.f1 = 'R', a1.f3, t2.f3) AS f3, +SUM( +IF( +(SELECT VPC.f2 +FROM t2 VPC, t4 a2, t2 a3 +WHERE +VPC.f4 = a2.f10 AND a3.f2 = a4 +LIMIT 1) IS NULL, +0, +t3.f5 +) +) AS a6 +FROM +t2, t3, t1 JOIN t2 a1 ON t1.f9 = a1.f4 +GROUP BY a4; +a4 f3 a6 +1 NULL NULL +2 NULL NULL +DROP TABLE t1, t2, t3, t4; +create table t1 (a float(5,4) zerofill); +create table t2 (a float(5,4),b float(2,0)); +select t1.a from t1 where +t1.a= (select b from t2 limit 1) and not +t1.a= (select a from t2 limit 1) ; +a +drop table t1, t2; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2); +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,<exists>(select 1 from `test`.`t1` group by `test`.`t1`.`a` having 1))) +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having 1)) +DROP TABLE t1; +# +# Bug#45061: Incorrectly market field caused wrong result. +# +CREATE TABLE `C` ( +`int_nokey` int(11) NOT NULL, +`int_key` int(11) NOT NULL, +KEY `int_key` (`int_key`) +); +INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4), +(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7), +(5,2), (1,8), (7,0), (0,9), (9,5); +SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +int_nokey int_key +9 9 +0 0 +5 5 +0 0 +EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where +DROP TABLE C; +# End of test for bug#45061. +# +# Bug #46749: Segfault in add_key_fields() with outer subquery level +# field references +# +CREATE TABLE t1 ( +a int, +b int, +UNIQUE (a), KEY (b) +); +INSERT INTO t1 VALUES (1,1), (2,1); +CREATE TABLE st1 like t1; +INSERT INTO st1 VALUES (1,1), (2,1); +CREATE TABLE st2 like t1; +INSERT INTO st2 VALUES (1,1), (2,1); +EXPLAIN +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +MAX(b) (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +NULL 0 +DROP TABLE t1, st1, st2; +# +# Bug #48709: Assertion failed in sql_select.cc:11782: +# int join_read_key(JOIN_TAB*) +# +CREATE TABLE t1 (pk int PRIMARY KEY, int_key int); +INSERT INTO t1 VALUES (10,1), (14,1); +CREATE TABLE t2 (pk int PRIMARY KEY, int_key int); +INSERT INTO t2 VALUES (3,3), (5,NULL), (7,3); +# should have eq_ref for t1 +EXPLAIN +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +id select_type table type possible_keys key key_len ref rows Extra +x x outr ALL x x x x x x +x x t1 eq_ref x x x x x x +x x t2 index x x x x x x +# should not crash on debug binaries +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +pk int_key +3 3 +7 3 +DROP TABLE t1,t2; +End of 5.0 tests. +create table t_out (subcase char(3), +a1 char(2), b1 char(2), c1 char(2)); +create table t_in (a2 char(2), b2 char(2), c2 char(2)); +insert into t_out values ('A.1','2a', NULL, '2a'); +insert into t_out values ('A.3', '2a', NULL, '2a'); +insert into t_out values ('A.4', '2a', NULL, 'xx'); +insert into t_out values ('B.1', '2a', '2a', '2a'); +insert into t_out values ('B.2', '2a', '2a', '2a'); +insert into t_out values ('B.3', '3a', 'xx', '3a'); +insert into t_out values ('B.4', 'xx', '3a', '3a'); +insert into t_in values ('1a', '1a', '1a'); +insert into t_in values ('2a', '2a', '2a'); +insert into t_in values (NULL, '2a', '2a'); +insert into t_in values ('3a', NULL, '3a'); + +Test general IN semantics (not top-level) + +case A.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'A.1'; +subcase pred_in pred_not_in +A.1 0 1 +case A.2 - impossible +case A.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.3'; +subcase pred_in pred_not_in +A.3 NULL NULL +case A.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.4'; +subcase pred_in pred_not_in +A.4 0 1 +case B.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'B.1'; +subcase pred_in pred_not_in +B.1 0 1 +case B.2 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.2'; +subcase pred_in pred_not_in +B.2 1 0 +case B.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.3'; +subcase pred_in pred_not_in +B.3 NULL NULL +case B.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.4'; +subcase pred_in pred_not_in +B.4 0 1 + +Test IN as top-level predicate, and +as non-top level for cases A.3, B.3 (the only cases with NULL result). + +case A.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case A.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'A.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case A.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +case B.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case B.2 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) IN (select * from t_in); +pred_in +T +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.2' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +case B.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'B.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case B.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +drop table t_out; +drop table t_in; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (s1 CHAR(1)); +INSERT INTO t1 VALUES ('a'); +SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1); +s1 +a +DROP TABLE t1; +CREATE TABLE t1(c INT, KEY(c)); +CREATE TABLE t2(a INT, b INT); +INSERT INTO t2 VALUES (1, 10), (2, NULL); +INSERT INTO t1 VALUES (1), (3); +SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(pk INT PRIMARY KEY, a INT, INDEX idx(a)); +INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20); +CREATE TABLE t2(pk INT PRIMARY KEY, a INT, b INT, INDEX idxa(a)); +INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100); +SELECT * FROM t1 +WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b); +pk a +1 10 +3 30 +2 20 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), KEY b (b)); +INSERT INTO t1 VALUES (1,NULL), (9,NULL); +CREATE TABLE t2 ( +a INT, +b INT, +c INT, +d INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c,d), +KEY b_2 (b), +KEY c (c), +KEY d (d) +); +INSERT INTO t2 VALUES +(43, 2, 11 ,30), +(44, 2, 12 ,30), +(45, 1, 1 ,10000), +(46, 1, 2 ,10000), +(556,1, 32 ,10000); +CREATE TABLE t3 ( +a INT, +b INT, +c INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c), +KEY c (c), +KEY b_2 (b) +); +INSERT INTO t3 VALUES (1,1,1), (2,32,1); +explain +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t3 ref b,b_2 b 5 test.t1.a 1 Using index +2 DEPENDENT SUBQUERY t2 ref b,b_2,c b 10 test.t3.c,test.t1.a 1 Using where; Using index; Using filesort +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +a incorrect +1 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int, c int); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +CREATE VIEW v1 AS +SELECT t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +UPDATE v1 SET c=1; +CREATE VIEW v2 (a,b) AS +SELECT t2.id, t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +INSERT INTO v2(a,b) VALUES (2,2); +ERROR HY000: CHECK OPTION failed 'test.v2' +SELECT * FROM v1; +c +1 +1 +1 +1 +CREATE VIEW v3 AS +SELECT t2.c AS c FROM t2 +WHERE 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +DELETE FROM v3; +DROP VIEW v1,v2,v3; +DROP TABLE t1,t2; +# +# BUG#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +# +# Bug#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +CREATE TABLE t1 (a ENUM('rainbow')); +INSERT INTO t1 VALUES (),(),(),(),(); +SELECT 1 FROM t1 GROUP BY (SELECT 1 FROM t1 ORDER BY AVG(LAST_INSERT_ID())); +1 +1 +DROP TABLE t1; +CREATE TABLE t1 (a LONGBLOB); +INSERT INTO t1 SET a = 'aaaa'; +INSERT INTO t1 SET a = 'aaaa'; +SELECT 1 FROM t1 GROUP BY +(SELECT LAST_INSERT_ID() FROM t1 ORDER BY MIN(a) ASC LIMIT 1); +1 +1 +DROP TABLE t1; +set @@optimizer_switch=@save_optimizer_switch; +# +# Bug #49512 : subquery with aggregate function crash +# subselect_single_select_engine::exec() +CREATE TABLE t1(a INT); +INSERT INTO t1 VALUES(); +# should not crash +SELECT 1 FROM t1 WHERE a <> SOME +( +SELECT MAX((SELECT a FROM t1 LIMIT 1)) AS d +FROM t1,t1 a +); +1 +DROP TABLE t1; +# +# Bug #45989 take 2 : memory leak after explain encounters an +# error in the query +# +CREATE TABLE t1(a LONGTEXT); +INSERT INTO t1 VALUES (repeat('a',@@global.max_allowed_packet)); +INSERT INTO t1 VALUES (repeat('b',@@global.max_allowed_packet)); +EXPLAIN EXTENDED SELECT DISTINCT 1 FROM t1, +(SELECT DISTINCTROW a AS away FROM t1 GROUP BY a WITH ROLLUP) AS d1 +WHERE t1.a = d1.a; +ERROR 42S22: Unknown column 'd1.a' in 'where clause' +DROP TABLE t1; +End of 5.1 tests. +Set up test tables. +CREATE TABLE t1 ( +t1_id INT UNSIGNED, +PRIMARY KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t1 (t1_id) VALUES (1), (2), (3), (4), (5); +CREATE TABLE t2 SELECT * FROM t1; +CREATE TABLE t3 ( +t3_id INT UNSIGNED AUTO_INCREMENT, +t1_id INT UNSIGNED, +amount DECIMAL(16,2), +PRIMARY KEY(t3_id), +KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t3 (t1_id, t3_id, amount) +VALUES (1, 1, 100.00), (2, 2, 200.00), (4, 4, 400.00); +This is the 'inner query' running by itself. +Produces correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query) +Produces correct results. +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +Now make t2.t1_id part of a key. +ALTER TABLE t2 ADD PRIMARY KEY(t1_id); +Same inner query by itself. +Still correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query), now with indexes on the LEFT JOIN +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +DROP TABLE t3; +DROP TABLE t2; +DROP TABLE t1; +# +# Bug #52711: Segfault when doing EXPLAIN SELECT with +# union...order by (select... where...) +# +CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a)); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (1),(2); +# Should not crash +EXPLAIN +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +# Should not crash +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +DROP TABLE t1,t2; +# LP BUG#675248 - select->prep_where references on freed memory +CREATE TABLE t1 (a int, b int); +insert into t1 values (1,1),(0,0); +CREATE TABLE t2 (c int); +insert into t2 values (1),(2); +prepare stmt1 from "select sum(a),(select sum(c) from t2 where table1.b) as sub +from t1 as table1 group by sub"; +execute stmt1; +sum(a) sub +0 NULL +1 3 +deallocate prepare stmt1; +prepare stmt1 from "select sum(a),(select sum(c) from t2 having table1.b) as sub +from t1 as table1"; +execute stmt1; +sum(a) sub +1 3 +deallocate prepare stmt1; +drop table t1,t2; +# +# Bug LP#693935/#58727: Assertion failure with +# a single row subquery returning more than one row +# +create table t1 (a char(1) charset utf8); +insert into t1 values ('a'), ('b'); +create table t2 (a binary(1)); +insert into t2 values ('x'), ('y'); +select * from t2 where a=(select a from t1) and a='x'; +ERROR 21000: Subquery returns more than 1 row +drop table t1,t2; +End of 5.1 tests +# +# No BUG#, a case brought from 5.2's innodb_mysql_lock.test +# +create table t1 (i int not null primary key); +insert into t1 values (1),(2),(3),(4),(5); +create table t2 (j int not null primary key); +insert into t2 values (1),(2),(3),(4),(5); +create table t3 (k int not null primary key); +insert into t3 values (1),(2),(3); +create view v2 as select t2.j as j from t2 where t2.j in (select t1.i from t1); +select * from t3 where k in (select j from v2); +k +1 +2 +3 +drop table t1,t2,t3; +drop view v2; +# +# Bug#52068: Optimizer generates invalid semijoin materialization plan +# +drop table if exists ot1, ot2, it1, it2; +CREATE TABLE ot1(a INTEGER); +INSERT INTO ot1 VALUES(5), (8); +CREATE TABLE it2(a INTEGER); +INSERT INTO it2 VALUES(9), (5), (1), (8); +CREATE TABLE it3(a INTEGER); +INSERT INTO it3 VALUES(7), (1), (0), (5), (1), (4); +CREATE TABLE ot4(a INTEGER); +INSERT INTO ot4 VALUES(1), (3), (5), (7), (9), (7), (3), (1); +SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +a a +5 1 +8 1 +5 5 +8 5 +5 7 +8 7 +5 7 +8 7 +5 1 +8 1 +explain SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot1 ALL NULL NULL NULL NULL 2 Start temporary +1 PRIMARY it2 ALL NULL NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) +1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; End temporary; Using join buffer (flat, BNL join) +DROP TABLE IF EXISTS ot1, ot4, it2, it3; +# +# Bug#729039: NULL keys used to evaluate subquery +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (NULL), (1), (NULL), (2); +CREATE TABLE t2 (a int, INDEX idx(a)) ; +INSERT INTO t2 VALUES (NULL), (1), (NULL); +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX () WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX() WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ref idx idx 5 test.t1.a 2 Using index +DROP TABLE t1,t2; +# +# BUG#752992: Wrong results for a subquery with 'semijoin=on' +# +CREATE TABLE t1 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t1 VALUES (11,0); +INSERT INTO t1 VALUES (12,5); +INSERT INTO t1 VALUES (15,0); +CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t2 VALUES (11,1); +INSERT INTO t2 VALUES (12,2); +INSERT INTO t2 VALUES (15,4); +EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3 Start temporary +1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join) +1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index; End temporary +SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +pk i +11 0 +12 5 +15 0 +DROP table t1,t2; +# +# Bug#751350: crash with pushed condition for outer references when +# there should be none of such conditions +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (0,0),(0,0); +EXPLAIN +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +b +0 +DROP TABLE t1; +# +# Bug #11765713 58705: +# OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES +# CREATED BY OPT_SUM_QUERY +# +CREATE TABLE t1(a INT NOT NULL, KEY (a)); +INSERT INTO t1 VALUES (0), (1); +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1) +); +ERROR 21000: Subquery returns more than 1 row +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1 where a is null) +); +foo +DROP TABLE t1; +set optimizer_switch=default; +select @@optimizer_switch like '%materialization=on%'; +@@optimizer_switch like '%materialization=on%' +1 diff --git a/mysql-test/r/subselect_no_opts.result b/mysql-test/r/subselect_no_opts.result new file mode 100644 index 00000000000..4cee8152006 --- /dev/null +++ b/mysql-test/r/subselect_no_opts.result @@ -0,0 +1,5111 @@ +set optimizer_switch='materialization=off,semijoin=off'; +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12; +drop view if exists v2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; +select (select 2); +(select 2) +2 +explain extended select (select 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select 2 AS `(select 2)` +SELECT (SELECT 1) UNION SELECT (SELECT 2); +(SELECT 1) +1 +2 +explain extended SELECT (SELECT 1) UNION SELECT (SELECT 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1249 Select 4 was reduced during optimization +Note 1003 select 1 AS `(SELECT 1)` union select 2 AS `(SELECT 2)` +SELECT (SELECT (SELECT 0 UNION SELECT 0)); +(SELECT (SELECT 0 UNION SELECT 0)) +0 +explain extended SELECT (SELECT (SELECT 0 UNION SELECT 0)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +4 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select (select 0 union select 0) AS `(SELECT (SELECT 0 UNION SELECT 0))` +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING a=1) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING b=1) as a,(SELECT 1 FROM (SELECT 1) as c HAVING a=1) as b; +ERROR 42S22: Reference 'b' not supported (forward reference in item list) +SELECT (SELECT 1),MAX(1) FROM (SELECT 1) as a; +(SELECT 1) MAX(1) +1 1 +SELECT (SELECT a) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +EXPLAIN EXTENDED SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having (<expr_cache><'1'>((select '1')) = 1) +SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +1 +1 +SELECT (SELECT 1), a; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT 1 as a FROM (SELECT 1) as b HAVING (SELECT a)=1; +a +1 +SELECT 1 FROM (SELECT (SELECT a) b) c; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT * FROM (SELECT 1 as id) b WHERE id IN (SELECT * FROM (SELECT 1 as id) c ORDER BY id); +id +1 +SELECT * FROM (SELECT 1) a WHERE 1 IN (SELECT 1,1); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 IN (SELECT 1); +1 IN (SELECT 1) +1 +SELECT 1 FROM (SELECT 1 as a) b WHERE 1 IN (SELECT (SELECT a)); +1 +1 +select (SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE(1)); +ERROR HY000: Incorrect usage of PROCEDURE and subquery +SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE((SELECT 1)); +ERROR HY000: Incorrect parameters to procedure 'ANALYSE' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NOT NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1,2,3) = ROW(1,2,3); +(SELECT 1,2,3) = ROW(1,2,3) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,1); +(SELECT 1,2,3) = ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) < ROW(1,2,1); +(SELECT 1,2,3) < ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) > ROW(1,2,1); +(SELECT 1,2,3) > ROW(1,2,1) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,NULL); +(SELECT 1,2,3) = ROW(1,2,NULL) +NULL +SELECT ROW(1,2,3) = (SELECT 1,2,3); +ROW(1,2,3) = (SELECT 1,2,3) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,1); +ROW(1,2,3) = (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) < (SELECT 1,2,1); +ROW(1,2,3) < (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) > (SELECT 1,2,1); +ROW(1,2,3) > (SELECT 1,2,1) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,NULL); +ROW(1,2,3) = (SELECT 1,2,NULL) +NULL +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'a'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'a') +1 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'b'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'b') +0 +SELECT (SELECT 1.5,2,'a') = ROW('1.5b',2,'b'); +(SELECT 1.5,2,'a') = ROW('1.5b',2,'b') +0 +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: '1.5b' +SELECT (SELECT 'b',2,'a') = ROW(1.5,2,'a'); +(SELECT 'b',2,'a') = ROW(1.5,2,'a') +0 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,'2','a'); +(SELECT 1.5,2,'a') = ROW(1.5,'2','a') +1 +SELECT (SELECT 1.5,'c','a') = ROW(1.5,2,'a'); +(SELECT 1.5,'c','a') = ROW(1.5,2,'a') +0 +SELECT (SELECT * FROM (SELECT 'test' a,'test' b) a); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 as a,(SELECT a+a) b,(SELECT b); +a b (SELECT b) +1 2 2 +create table t1 (a int); +create table t2 (a int, b int); +create table t3 (a int); +create table t4 (a int not null, b int not null); +insert into t1 values (2); +insert into t2 values (1,7),(2,7); +insert into t4 values (4,8),(3,8),(5,9); +select (select a from t1 where t1.a = a1) as a2, (select b from t2 where t2.b=a2) as a1; +ERROR 42S22: Reference 'a1' not supported (forward reference in item list) +select (select a from t1 where t1.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a) a +NULL 1 +2 2 +select (select a from t1 where t1.a=t2.b), a from t2; +(select a from t1 where t1.a=t2.b) a +NULL 1 +NULL 2 +select (select a from t1), a, (select 1 union select 2 limit 1) from t2; +(select a from t1) a (select 1 union select 2 limit 1) +2 1 1 +2 2 1 +select (select a from t3), a from t2; +(select a from t3) a +NULL 1 +NULL 2 +select * from t2 where t2.a=(select a from t1); +a b +2 7 +insert into t3 values (6),(7),(3); +select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1); +a b +1 7 +2 7 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 order by a limit 2) limit 3; +a b +1 7 +2 7 +3 8 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +a b +1 7 +2 7 +4 8 +3 8 +explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using filesort +3 UNION t4 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = (select `test`.`t3`.`a` from `test`.`t3` order by 1 desc limit 1))) union (select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t4` where (`test`.`t4`.`b` = (select (max(`test`.`t2`.`a`) * 4) from `test`.`t2`)) order by `a`) +select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2; +(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a +3 1 +7 2 +select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +(select t3.a from t3 where a<8 order by 1 desc limit 1) a +7 2 +explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> system NULL NULL NULL NULL 1 100.00 +3 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort +Warnings: +Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,'2' AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); +a +select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) +8 7.5000 +8 4.5000 +9 7.5000 +explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t4.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t4`.`b` AS `b`,(select avg((`test`.`t2`.`a` + (select min(`test`.`t3`.`a`) from `test`.`t3` where (`test`.`t3`.`a` >= `test`.`t4`.`a`)))) from `test`.`t2`) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from `test`.`t4` +select * from t3 where exists (select * from t2 where t2.b=t3.a); +a +7 +select * from t3 where not exists (select * from t2 where t2.b=t3.a); +a +6 +3 +select * from t3 where a in (select b from t2); +a +7 +select * from t3 where a not in (select b from t2); +a +6 +3 +select * from t3 where a = some (select b from t2); +a +7 +select * from t3 where a <> any (select b from t2); +a +6 +3 +select * from t3 where a = all (select b from t2); +a +7 +select * from t3 where a <> all (select b from t2); +a +6 +3 +insert into t2 values (100, 5); +select * from t3 where a < any (select b from t2); +a +6 +3 +select * from t3 where a < all (select b from t2); +a +3 +select * from t3 where a >= any (select b from t2); +a +6 +7 +explain extended select * from t3 where a >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2); +a +7 +delete from t2 where a=100; +select * from t3 where a in (select a,b from t2); +ERROR 21000: Operand should contain 1 column(s) +select * from t3 where a in (select * from t2); +ERROR 21000: Operand should contain 1 column(s) +insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9),(1,10); +select b,max(a) as ma from t4 group by b having b < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +insert into t2 values (2,10); +select b,max(a) as ma from t4 group by b having ma < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +10 1 +delete from t2 where a=2 and b=10; +select b,max(a) as ma from t4 group by b having b >= (select max(t2.a) from t2 where t2.b=t4.b); +b ma +7 12 +create table t5 (a int); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (5); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (2); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +explain extended select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 +Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select <expr_cache><`test`.`t2`.`a`>((select '2' from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`))) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` +select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2; +ERROR 21000: Subquery returns more than 1 row +create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq)); +create table t7( uq int primary key, name char(25)); +insert into t7 values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta"); +insert into t6 values (1,1),(1,2),(2,2),(1,3); +select * from t6 where exists (select * from t7 where uq = clinic_uq); +patient_uq clinic_uq +1 1 +1 2 +2 2 +explain extended select * from t6 where exists (select * from t7 where uq = clinic_uq); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t6 ALL NULL NULL NULL NULL 4 100.00 Using where +2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 100.00 Using index +Warnings: +Note 1276 Field or reference 'test.t6.clinic_uq' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where <expr_cache><`test`.`t6`.`clinic_uq`>(exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`))) +select * from t1 where a= (select a from t2,t4 where t2.b=t4.b); +ERROR 23000: Column 'a' in field list is ambiguous +drop table t1,t2,t3; +CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0'); +INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b'); +CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0'); +INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2'); +CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00'); +INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13'); +SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1); +a b +W 1732-02-22 +SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2); +a b +W 1 +SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3); +a b +W a +CREATE TABLE `t8` ( +`pseudo` varchar(35) character set latin1 NOT NULL default '', +`email` varchar(60) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`), +UNIQUE KEY `email` (`email`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +INSERT INTO t8 (pseudo,email) VALUES ('joce','test'); +INSERT INTO t8 (pseudo,email) VALUES ('joce1','test1'); +INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1'); +EXPLAIN EXTENDED SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index +4 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +2 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00 +3 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +Warnings: +Note 1003 select 'joce' AS `pseudo`,(select 'test' from `test`.`t8` where 1) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from `test`.`t8` where 1 +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM +t8 WHERE pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT * FROM t8 WHERE +pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +pseudo +joce +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo LIKE '%joce%'); +ERROR 21000: Subquery returns more than 1 row +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8; +CREATE TABLE `t1` ( +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (topic,date,pseudo) VALUES +('43506','2002-10-02','joce'),('40143','2002-08-03','joce'); +EXPLAIN EXTENDED SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03') +EXPLAIN EXTENDED SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 SUBQUERY t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select (select distinct `test`.`t1`.`date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03')) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')` +SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +date +2002-08-03 +SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03') +2002-08-03 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1; +1 +1 +1 +1 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1; +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL topic 3 NULL 2 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (40143,1),(43506,2); +CREATE TABLE `t2` ( +`mot` varchar(30) NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t2 (mot,topic,date,pseudo) VALUES ('joce','40143','2002-10-22','joce'), ('joce','43506','2002-10-22','joce'); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +a +40143 +SELECT numeropost,maxnumrep FROM t1 WHERE exists (SELECT 1 FROM t2 WHERE (mot='joce') AND date >= '2002-10-21' AND t1.numeropost = t2.topic) ORDER BY maxnumrep DESC LIMIT 0, 20; +numeropost maxnumrep +43506 2 +40143 1 +SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) b; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT 1 IN (SELECT 1 FROM t2 HAVING a); +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 1 +SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2); +mot topic date pseudo +SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 0 +drop table t1,t2; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (1,0),(2,1); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +select numeropost as a FROM t1 ORDER BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +show warnings; +Level Code Message +Error 1242 Subquery returns more than 1 row +Error 1028 Sort aborted +drop table t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +(select * from t1) union (select * from t1) order by (select a from t1 limit 1); +a +1 +2 +3 +drop table t1; +CREATE TABLE t1 (field char(1) NOT NULL DEFAULT 'b'); +INSERT INTO t1 VALUES (); +SELECT field FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1 FROM (SELECT 1) a HAVING field='b'); +ERROR 21000: Subquery returns more than 1 row +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL default '0', +`numreponse` int(10) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`numeropost`,`numreponse`), +UNIQUE KEY `numreponse` (`numreponse`), +KEY `pseudo` (`pseudo`,`numeropost`) +) ENGINE=MyISAM; +SELECT (SELECT numeropost FROM t1 HAVING numreponse=a),numreponse FROM (SELECT * FROM t1) as a; +ERROR 42S22: Reference 'numreponse' not supported (forward reference in item list) +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=a) FROM (SELECT * FROM t1) as a; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=1) FROM (SELECT * FROM t1) as a; +numreponse (SELECT numeropost FROM t1 HAVING numreponse=1) +INSERT INTO t1 (numeropost,numreponse,pseudo) VALUES (1,1,'joce'),(1,2,'joce'),(1,3,'test'); +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1 FROM t1 WHERE numeropost='1'); +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1') +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select '3' AS `numreponse` from `test`.`t1` where (('1' = '1')) +drop table t1; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1); +SELECT 1 FROM (SELECT a FROM t1) b HAVING (SELECT b.a)=1; +1 +1 +drop table t1; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 22),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +update t1 set b= (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +update t1 set b= (select b from t2); +ERROR 21000: Subquery returns more than 1 row +update t1 set b= (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 NULL +1 21 +2 22 +drop table t1, t2; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +select * from t1 where b = (select b from t2 where t1.a = t2.a); +a b +2 12 +delete from t1 where b = (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +delete from t1 where b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete from t1 where b = (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 10 +1 11 +drop table t1, t2; +create table t11 (a int NOT NULL, b int, primary key (a)); +create table t12 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t11 values (0, 10),(1, 11),(2, 12); +insert into t12 values (33, 10),(22, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t11; +a b +0 10 +1 11 +2 12 +select * from t12; +a b +33 10 +22 11 +2 12 +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a); +ERROR HY000: You can't specify target table 't12' for update in FROM clause +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a); +select * from t11; +a b +0 10 +1 11 +select * from t12; +a b +33 10 +22 11 +drop table t11, t12, t2; +CREATE TABLE t1 (x int) ENGINE=MyISAM; +create table t2 (a int) ENGINE=MyISAM; +create table t3 (b int); +insert into t2 values (1); +insert into t3 values (1),(2); +INSERT INTO t1 (x) VALUES ((SELECT x FROM t1)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +INSERT INTO t1 (x) VALUES ((SELECT b FROM t3)); +ERROR 21000: Subquery returns more than 1 row +INSERT INTO t1 (x) VALUES ((SELECT a FROM t2)); +select * from t1; +x +1 +insert into t2 values (1); +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2; +select * from t1; +x +1 +2 +3 +3 +INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2; +select * from t1; +x +1 +2 +3 +3 +11 +11 +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2)); +ERROR 42S22: Unknown column 'x' in 'field list' +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +3 +3 +11 +11 +2 +drop table t1, t2, t3; +CREATE TABLE t1 (x int not null, y int, primary key (x)) ENGINE=MyISAM; +create table t2 (a int); +create table t3 (a int); +insert into t2 values (1); +insert into t3 values (1),(2); +select * from t1; +x y +replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2)); +ERROR 21000: Subquery returns more than 1 row +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 2 +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2)); +select * from t1; +x y +1 3 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 1 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 3 +4 2 +replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 2 +2 1 +drop table t1, t2, t3; +SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *); +ERROR HY000: No tables used +CREATE TABLE t2 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (1),(2); +SELECT * FROM t2 WHERE id IN (SELECT 1); +id +1 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1) +SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id +1 +SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id +2 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 3 was reduced during optimization +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = (1 + 1)) +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3))))) +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3); +id +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2); +id +2 +INSERT INTO t2 VALUES ((SELECT * FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +INSERT INTO t2 VALUES ((SELECT id FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +SELECT * FROM t2; +id +1 +2 +CREATE TABLE t1 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 values (1),(1); +UPDATE t2 SET id=(SELECT * FROM t1); +ERROR 21000: Subquery returns more than 1 row +drop table t2, t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2; +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 3 IN (SELECT * from t1); +3 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +NULL +select 1 > ALL (SELECT * from t1); +1 > ALL (SELECT * from t1) +0 +select 10 > ALL (SELECT * from t1); +10 > ALL (SELECT * from t1) +NULL +select 1 > ANY (SELECT * from t1); +1 > ANY (SELECT * from t1) +NULL +select 10 > ANY (SELECT * from t1); +10 > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a varchar(20)); +insert into t1 values ('A'),('BC'),('DEF'); +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a='BC'; +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'DEF' IN (SELECT * from t1); +'DEF' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +NULL +select 'A' > ALL (SELECT * from t1); +'A' > ALL (SELECT * from t1) +0 +select 'XYZS' > ALL (SELECT * from t1); +'XYZS' > ALL (SELECT * from t1) +NULL +select 'A' > ANY (SELECT * from t1); +'A' > ANY (SELECT * from t1) +NULL +select 'XYZS' > ANY (SELECT * from t1); +'XYZS' > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a float); +insert into t1 values (1.5),(2.5),(3.5); +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2.5; +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 3.5 IN (SELECT * from t1); +3.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +NULL +select 1.5 > ALL (SELECT * from t1); +1.5 > ALL (SELECT * from t1) +0 +select 10.5 > ALL (SELECT * from t1); +10.5 > ALL (SELECT * from t1) +NULL +select 1.5 > ANY (SELECT * from t1); +1.5 > ANY (SELECT * from t1) +NULL +select 10.5 > ANY (SELECT * from t1); +10.5 > ANY (SELECT * from t1) +1 +explain extended select (select a+1) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1249 Select 2 was reduced during optimization +Note 1003 select (`test`.`t1`.`a` + 1) AS `(select a+1)` from `test`.`t1` +select (select a+1) from t1; +(select a+1) +2.5 +NULL +4.5 +drop table t1; +CREATE TABLE t1 (a int(11) NOT NULL default '0', PRIMARY KEY (a)); +CREATE TABLE t2 (a int(11) default '0', INDEX (a)); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +a t1.a in (select t2.a from t2) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1` +CREATE TABLE t3 (a int(11) default '0'); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +a t1.a in (select t2.a from t2,t3 where t3.a=t2.a) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1` +drop table t1,t2,t3; +create table t1 (a float); +select 10.5 IN (SELECT * from t1 LIMIT 1); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +select 10.5 IN (SELECT * from t1 LIMIT 1 UNION SELECT 1.5); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int, b int, c varchar(10)); +create table t2 (a int); +insert into t1 values (1,2,'a'),(2,3,'b'),(3,4,'c'); +insert into t2 values (1),(2),(NULL); +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a') (select c from t1 where a=t2.a) +1 1 a +2 0 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b') (select c from t1 where a=t2.a) +1 0 a +2 1 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c') (select c from t1 where a=t2.a) +1 0 a +2 0 b +NULL NULL NULL +drop table t1,t2; +create table t1 (a int, b real, c varchar(10)); +insert into t1 values (1, 1, 'a'), (2,2,'b'), (NULL, 2, 'b'); +select ROW(1, 1, 'a') IN (select a,b,c from t1); +ROW(1, 1, 'a') IN (select a,b,c from t1) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1); +ROW(1, 2, 'a') IN (select a,b,c from t1) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1); +ROW(1, 1, 'a') IN (select b,a,c from t1) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a') +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a') +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a') +1 +select ROW(1, 1, 'a') IN (select b,a,c from t1 limit 2); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int); +insert into t1 values (1); +do @a:=(SELECT a from t1); +select @a; +@a +1 +set @a:=2; +set @a:=(SELECT a from t1); +select @a; +@a +1 +drop table t1; +do (SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +set @a:=(SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 (a int, KEY(a)); +HANDLER t1 OPEN; +HANDLER t1 READ a=((SELECT 1)); +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1))' at line 1 +HANDLER t1 CLOSE; +drop table t1; +create table t1 (a int); +create table t2 (b int); +insert into t1 values (1),(2); +insert into t2 values (1); +select a from t1 where a in (select a from t1 where a in (select b from t2)); +a +1 +drop table t1, t2; +create table t1 (a int, b int); +create table t2 like t1; +insert into t1 values (1,2),(1,3),(1,4),(1,5); +insert into t2 values (1,2),(1,3); +select * from t1 where row(a,b) in (select a,b from t2); +a b +1 2 +1 3 +drop table t1, t2; +CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +select * from t1; +i +2 +drop table t1; +CREATE TABLE t1 (a int(1)); +EXPLAIN EXTENDED SELECT (SELECT RAND() FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select rand() from `test`.`t1`) AS `(SELECT RAND() FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select encrypt('test') from `test`.`t1`) AS `(SELECT ENCRYPT('test') FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select benchmark(1,1) from `test`.`t1`) AS `(SELECT BENCHMARK(1,1) FROM t1)` from `test`.`t1` +drop table t1; +CREATE TABLE `t1` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t2` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t3` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t3 VALUES (1,1); +SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE +numeropost=topic); +topic +2 +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +test 2 0000-00-00 test +DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT +EXISTS(SELECT * FROM t3 WHERE numeropost=topic)); +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +drop table t1, t2, t3; +SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +a (SELECT a) +1 1 +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT 1)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT 1)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a+0)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a+0)` int(3) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT (SELECT 1 as a UNION SELECT 1+1 limit 1,1) as a; +select * from t1; +a +2 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` bigint(20) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (a int); +insert into t1 values (1), (2), (3); +explain extended select a,(select (select rand() from t1 limit 1) from t1 limit 1) +from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,(select (select rand() from `test`.`t1` limit 1) from `test`.`t1` limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from `test`.`t1` +drop table t1; +select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 ( +ID int(11) NOT NULL auto_increment, +name char(35) NOT NULL default '', +t2 char(3) NOT NULL default '', +District char(20) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (130,'Sydney','AUS','New South Wales',3276207); +INSERT INTO t1 VALUES (131,'Melbourne','AUS','Victoria',2865329); +INSERT INTO t1 VALUES (132,'Brisbane','AUS','Queensland',1291117); +CREATE TABLE t2 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '', +PRIMARY KEY (Code) +) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('AUS','Australia','Oceania','Australia and New Zealand',7741220.00,1901,18886000,79.8,351182.00,392911.00,'Australia','Constitutional Monarchy, Federation','Elisabeth II',135,'AU'); +INSERT INTO t2 VALUES ('AZE','Azerbaijan','Asia','Middle East',86600.00,1991,7734000,62.9,4127.00,4100.00,'Azärbaycan','Federal Republic','Heydär Äliyev',144,'AZ'); +select t2.Continent, t1.Name, t1.Population from t2 LEFT JOIN t1 ON t2.Code = t1.t2 where t1.Population IN (select max(t1.Population) AS Population from t1, t2 where t1.t2 = t2.Code group by Continent); +Continent Name Population +Oceania Sydney 3276207 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (pseudo) VALUES ('test'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +INSERT INTO t1 (pseudo) VALUES ('test1'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +drop table t1; +CREATE TABLE `t1` ( +`i` int(11) NOT NULL default '0', +PRIMARY KEY (`i`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+(SELECT MAX(i) FROM (SELECT 1) t) WHERE i=(SELECT MAX(i)); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t); +ERROR 42S22: Unknown column 't.i' in 'field list' +select * from t1; +i +3 +drop table t1; +CREATE TABLE t1 ( +id int(11) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(1),(2),(2),(1),(3); +CREATE TABLE t2 ( +id int(11) default NULL, +name varchar(15) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (4,'vita'), (1,'vita'), (2,'vita'), (1,'vita'); +update t1, t2 set t2.name='lenka' where t2.id in (select id from t1); +select * from t2; +id name +4 vita +1 lenka +2 lenka +1 lenka +drop table t1,t2; +create table t1 (a int, unique index indexa (a)); +insert into t1 values (-1), (-4), (-2), (NULL); +select -10 IN (select a from t1 FORCE INDEX (indexa)); +-10 IN (select a from t1 FORCE INDEX (indexa)) +NULL +drop table t1; +create table t1 (id int not null auto_increment primary key, salary int, key(salary)); +insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000); +explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using index condition +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`)) +drop table t1; +CREATE TABLE t1 ( +ID int(10) unsigned NOT NULL auto_increment, +SUB_ID int(3) unsigned NOT NULL default '0', +REF_ID int(10) unsigned default NULL, +REF_SUB int(3) unsigned default '0', +PRIMARY KEY (ID,SUB_ID), +UNIQUE KEY t1_PK (ID,SUB_ID), +KEY t1_FK (REF_ID,REF_SUB), +KEY t1_REFID (REF_ID) +) ENGINE=MyISAM CHARSET=cp1251; +INSERT INTO t1 VALUES (1,0,NULL,NULL),(2,0,NULL,NULL); +SELECT DISTINCT REF_ID FROM t1 WHERE ID= (SELECT DISTINCT REF_ID FROM t1 WHERE ID=2); +REF_ID +DROP TABLE t1; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,0), (2,0), (3,0); +insert into t2 values (1,1), (2,1), (3,1), (2,2); +update ignore t1 set b=(select b from t2 where t1.a=t2.a); +Warnings: +Error 1242 Subquery returns more than 1 row +select * from t1; +a b +1 1 +2 NULL +3 1 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +`email` varchar(60) NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `email` (`email`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM CHARSET=latin1 PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (id,pseudo,email) VALUES (1,'test','test'),(2,'test1','test1'); +SELECT pseudo as a, pseudo as b FROM t1 GROUP BY (SELECT a) ORDER BY (SELECT id*1); +a b +test test +test1 test1 +drop table if exists t1; +(SELECT 1 as a) UNION (SELECT 1) ORDER BY (SELECT a+0); +a +1 +create table t1 (a int not null, b int, primary key (a)); +create table t2 (a int not null, primary key (a)); +create table t3 (a int not null, b int, primary key (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY)))) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))))) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using where +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) +drop table t1, t2, t3; +create table t1 (a int, b int, index a (a,b)); +create table t2 (a int, index a (a)); +create table t3 (a int, b int, index a (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 +select rand()*100000+200,rand()*100000 from t0 A, t0 B, t0 C, t0 D; +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a)))) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index; Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))))) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref a a 5 func 1001 100.00 Using index +2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) +insert into t1 values (3,31); +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +3 +4 +select * from t2 where t2.a in (select a from t1 where t1.b <> 30 and t1.b <> 31); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 100.00 Using index; Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where ((`test`.`t1`.`b` <> 30) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))))) +drop table t0, t1, t2, t3; +create table t1 (a int, b int); +create table t2 (a int, b int); +create table t3 (a int, b int); +insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10); +insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1); +insert into t3 values (3,3), (2,2), (1,1); +select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) from t3; +a (select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) +3 1 +2 2 +1 2 +drop table t1,t2,t3; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +select * from t1 where exists (select s1 from t2 having max(t2.s1)=t1.s1); +s1 +1 +drop table t1,t2; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +update t1 set s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A); +ERROR 42S22: Unknown column 'x.s1' in 'field list' +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 CHAR(5) COLLATE latin1_german1_ci, +s2 CHAR(5) COLLATE latin1_swedish_ci); +INSERT INTO t1 VALUES ('z','?'); +select * from t1 where s1 > (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +select * from t1 where s1 > any (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +drop table t1; +create table t1(toid int,rd int); +create table t2(userid int,pmnew int,pmtotal int); +insert into t2 values(1,0,0),(2,0,0); +insert into t1 values(1,0),(1,0),(1,0),(1,12),(1,15),(1,123),(1,12312),(1,12312),(1,123),(2,0),(2,0),(2,1),(2,2); +select userid,pmtotal,pmnew, (select count(rd) from t1 where toid=t2.userid) calc_total, (select count(rd) from t1 where rd=0 and toid=t2.userid) calc_new from t2 where userid in (select distinct toid from t1); +userid pmtotal pmnew calc_total calc_new +1 0 0 9 3 +2 0 0 4 2 +drop table t1, t2; +create table t1 (s1 char(5)); +select (select 'a','b' from t1 union select 'a','b' from t1) from t1; +ERROR 21000: Operand should contain 1 column(s) +insert into t1 values ('tttt'); +select * from t1 where ('a','b')=(select 'a','b' from t1 union select 'a','b' from t1); +s1 +tttt +explain extended (select * from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 (select 'tttt' AS `s1` from `test`.`t1`) +(select * from t1); +s1 +tttt +drop table t1; +create table t1 (s1 char(5), index s1(s1)); +create table t2 (s1 char(5), index s1(s1)); +insert into t1 values ('a1'),('a2'),('a3'); +insert into t2 values ('a1'),('a2'); +select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +s1 s1 NOT IN (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +s1 s1 = ANY (SELECT s1 FROM t2) +a1 1 +a2 1 +a3 0 +select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +s1 s1 <> ALL (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +s1 s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') +a1 0 +a2 1 +a3 1 +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Using where; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1` +drop table t1,t2; +create table t2 (a int, b int); +create table t3 (a int); +insert into t3 values (6),(7),(3); +select * from t3 where a >= all (select b from t2); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) +select * from t3 where a >= some (select b from t2); +a +explain extended select * from t3 where a >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2 group by 1); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) +select * from t3 where a >= some (select b from t2 group by 1); +a +explain extended select * from t3 where a >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) +select * from t3 where NULL >= any (select b from t2); +a +explain extended select * from t3 where NULL >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= any (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= any (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2); +a +explain extended select * from t3 where NULL >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +insert into t2 values (2,2), (2,1), (3,3), (3,1); +select * from t3 where a > all (select max(b) from t2 group by a); +a +6 +7 +explain extended select * from t3 where a > all (select max(b) from t2 group by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) +drop table t2, t3; +CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; +INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); +CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647; +INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0); +CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY (`taskgenid`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ; +INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1); +CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status'); +select dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid; +dbid name (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') +-1 Valid 1 +-1 Valid 2 1 +-1 Should Not Return 0 +SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')) AND t4.task_id = taskid; +dbid name +-1 Valid +-1 Valid 2 +drop table t1,t2,t3,t4; +CREATE TABLE t1 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(5); +CREATE TABLE t2 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (2),(6); +select * from t1 where (1,2,6) in (select * from t2); +ERROR 21000: Operand should contain 3 column(s) +DROP TABLE t1,t2; +create table t1 (s1 int); +insert into t1 values (1); +insert into t1 values (2); +set sort_buffer_size = (select s1 from t1); +ERROR 21000: Subquery returns more than 1 row +do (select * from t1); +Warnings: +Error 1242 Subquery returns more than 1 row +drop table t1; +create table t1 (s1 char); +insert into t1 values ('e'); +select * from t1 where 'f' > any (select s1 from t1); +s1 +e +select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +s1 +e +explain extended select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 UNION t1 system NULL NULL NULL NULL 1 100.00 +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 'e' AS `s1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); +CREATE TABLE t2 (code char(5) NOT NULL default '',UNIQUE KEY code (code)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES ('1'),('1226'),('1245'),('1862'),('18623'),('1874'),('1967'),('6'); +select c.number as phone,(select p.code from t2 p where c.number like concat(p.code, '%') order by length(p.code) desc limit 1) as code from t1 c; +phone code +69294728265 6 +18621828126 1862 +89356874041 NULL +95895001874 NULL +drop table t1, t2; +create table t1 (s1 int); +create table t2 (s1 int); +select * from t1 where (select count(*) from t2 where t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'where clause' +select * from t1 where (select count(*) from t2 group by t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +select count(*) from t2 group by t1.s2; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +drop table t1, t2; +CREATE TABLE t1(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC VARCHAR(20) DEFAULT NULL,PRIMARY KEY (COLA, COLB)); +CREATE TABLE t2(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC CHAR(1) NOT NULL,PRIMARY KEY (COLA)); +INSERT INTO t1 VALUES (1,1,'1A3240'), (1,2,'4W2365'); +INSERT INTO t2 VALUES (100, 200, 'C'); +SELECT DISTINCT COLC FROM t1 WHERE COLA = (SELECT COLA FROM t2 WHERE COLB = 200 AND COLC ='C' LIMIT 1); +COLC +DROP TABLE t1, t2; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5); +SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100; +(SELECT a) +1 +2 +3 +4 +5 +DROP TABLE t1; +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +select a, (select max(b) from t1) into outfile "../../tmp/subselect.out.file.1" from t1; +delete from t1; +load data infile "../../tmp/subselect.out.file.1" into table t1; +select * from t1; +a b +1 0.123 +drop table t1; +CREATE TABLE `t1` ( +`id` int(11) NOT NULL auto_increment, +`id_cns` tinyint(3) unsigned NOT NULL default '0', +`tipo` enum('','UNO','DUE') NOT NULL default '', +`anno_dep` smallint(4) unsigned zerofill NOT NULL default '0000', +`particolare` mediumint(8) unsigned NOT NULL default '0', +`generale` mediumint(8) unsigned NOT NULL default '0', +`bis` tinyint(3) unsigned NOT NULL default '0', +PRIMARY KEY (`id`), +UNIQUE KEY `idx_cns_gen_anno` (`anno_dep`,`id_cns`,`generale`,`particolare`), +UNIQUE KEY `idx_cns_par_anno` (`id_cns`,`anno_dep`,`tipo`,`particolare`,`bis`) +); +INSERT INTO `t1` VALUES (1,16,'UNO',1987,2048,9681,0),(2,50,'UNO',1987,1536,13987,0),(3,16,'UNO',1987,2432,14594,0),(4,16,'UNO',1987,1792,13422,0),(5,16,'UNO',1987,1025,10240,0),(6,16,'UNO',1987,1026,7089,0); +CREATE TABLE `t2` ( +`id` tinyint(3) unsigned NOT NULL auto_increment, +`max_anno_dep` smallint(6) unsigned NOT NULL default '0', +PRIMARY KEY (`id`) +); +INSERT INTO `t2` VALUES (16,1987),(50,1990),(51,1990); +SELECT cns.id, cns.max_anno_dep, cns.max_anno_dep = (SELECT s.anno_dep FROM t1 AS s WHERE s.id_cns = cns.id ORDER BY s.anno_dep DESC LIMIT 1) AS PIPPO FROM t2 AS cns; +id max_anno_dep PIPPO +16 1987 1 +50 1990 0 +51 1990 NULL +DROP TABLE t1, t2; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SET SQL_SELECT_LIMIT=1; +select sum(a) from (select * from t1) as a; +sum(a) +6 +select 2 in (select * from t1); +2 in (select * from t1) +1 +SET SQL_SELECT_LIMIT=default; +drop table t1; +CREATE TABLE t1 (a int, b int, INDEX (a)); +INSERT INTO t1 VALUES (1, 1), (1, 2), (1, 3); +SELECT * FROM t1 WHERE a = (SELECT MAX(a) FROM t1 WHERE a = 1) ORDER BY b; +a b +1 1 +1 2 +1 3 +DROP TABLE t1; +create table t1(val varchar(10)); +insert into t1 values ('aaa'), ('bbb'),('eee'),('mmm'),('ppp'); +select count(*) from t1 as w1 where w1.val in (select w2.val from t1 as w2 where w2.val like 'm%') and w1.val in (select w3.val from t1 as w3 where w3.val like 'e%'); +count(*) +0 +drop table t1; +create table t1 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t1 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text11'), (12, 'text12'); +select * from t1 where id not in (select id from t1 where id < 8); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +explain extended select * from t1 where id not in (select id from t1 where id < 8); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`)))))))) +explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY tt ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 100.00 Using where; Using index +Warnings: +Note 1276 Field or reference 'test.tt.id' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(<expr_cache><`test`.`tt`.`id`>(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null))))) +insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001'); +create table t2 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10'); +select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id text id text id text +1 text1 1 text1 1 text1 +2 text2 2 text2 2 text2 +3 text3 3 text3 3 text3 +4 text4 4 text4 4 text4 +5 text5 5 text5 5 text5 +6 text6 6 text6 6 text6 +7 text7 7 text7 7 text7 +8 text8 8 text8 8 text8 +9 text9 9 text9 9 text9 +10 text10 10 text10 10 text10 +11 text11 11 text1 11 text11 +12 text12 12 text2 12 text12 +1000 text1000 NULL NULL 1000 text1000 +1001 text1001 NULL NULL 1000 text1000 +explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE a ALL NULL NULL NULL NULL 14 100.00 +1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2 100.00 +1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using index condition +Warnings: +Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`b`.`id` = `test`.`a`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`) +drop table t1,t2; +create table t1 (a int); +insert into t1 values (1); +explain select benchmark(1000, (select a from t1 where a=sha(rand()))); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 1 +drop table t1; +create table t1(id int); +create table t2(id int); +create table t3(flag int); +select (select * from t3 where id not null) from t1, t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'null) from t1, t2' at line 1 +drop table t1,t2,t3; +CREATE TABLE t1 (id INT); +CREATE TABLE t2 (id INT); +INSERT INTO t1 VALUES (1), (2); +INSERT INTO t2 VALUES (1); +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY t1.id; +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY id; +id c +1 1 +2 0 +DROP TABLE t1,t2; +CREATE TABLE t1 ( a int, b int ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +ALTER TABLE t1 ADD INDEX (a); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a = ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a,2 FROM t1 WHERE b = 2); +a +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +a +1 +2 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') +0- +0- +1- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') +1- +0- +0- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') +0- +1- +0- +DROP TABLE t1; +CREATE TABLE t1 ( a double, b double ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +DROP TABLE t1; +CREATE TABLE t1 ( a char(1), b char(1)); +INSERT INTO t1 VALUES ('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +create table t1 (a int, b int); +insert into t1 values (1,2),(3,4); +select * from t1 up where exists (select * from t1 where t1.a=up.a); +a b +1 2 +3 4 +explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY up ALL NULL NULL NULL NULL 2 100.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.up.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where <expr_cache><`test`.`up`.`a`>(exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`))) +drop table t1; +CREATE TABLE t1 (t1_a int); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b)); +INSERT INTO t2 VALUES (1, 1), (1, 2); +SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1 +HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a); +t1_a t2_a t2_b +1 1 2 +DROP TABLE t1, t2; +CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL); +INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL); +CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL); +INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix'); +SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id; +id name id pet +1 Tim 1 Fido +2 Rebecca 2 Spot +3 NULL 3 Felix +drop table t1,t2; +CREATE TABLE t1 ( a int, b int ); +CREATE TABLE t2 ( c int, d int ); +INSERT INTO t1 VALUES (1,2), (2,3), (3,4); +SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +abc b +1 2 +2 3 +3 4 +INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t2; +c d +1 2 +2 3 +3 4 +CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t3; +abc b +1 2 +2 3 +3 4 +prepare stmt1 from "INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +deallocate prepare stmt1; +select * from t2; +c d +1 2 +2 3 +3 4 +1 2 +2 3 +3 4 +drop table t3; +prepare stmt1 from "CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +select * from t3; +abc b +1 2 +2 3 +3 4 +deallocate prepare stmt1; +DROP TABLE t1, t2, t3; +CREATE TABLE `t1` ( `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t1 values (1); +CREATE TABLE `t2` ( `b` int(11) default NULL, `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t2 values (1,2); +select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1); +a C +1 1 +drop table t1,t2; +create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b)); +insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'), ('Patrik'),('Hakan'); +create table t2 (a int); +insert into t2 values (1),(3),(2),(7); +select a,b from t1 where match(b) against ('Ball') > 0; +a b +1 ball +2 ball games +select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0); +a +1 +2 +drop table t1,t2; +CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin); +CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001'); +SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001'); +IZAVORGANG_ID +D0000000001 +drop table t1; +CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +insert into t1 values (1,1),(1,2),(2,1),(2,2); +insert into t2 values (1,2),(2,2); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop primary key; +alter table t2 add key KEY1 (aid, bid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop key KEY1; +alter table t2 add primary key (bid, aid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +drop table t1,t2; +CREATE TABLE t1 (howmanyvalues bigint, avalue int); +INSERT INTO t1 VALUES (1, 1),(2, 1),(2, 2),(3, 1),(3, 2),(3, 3),(4, 1),(4, 2),(4, 3),(4, 4); +SELECT howmanyvalues, count(*) from t1 group by howmanyvalues; +howmanyvalues count(*) +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +CREATE INDEX t1_howmanyvalues_idx ON t1 (howmanyvalues); +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues+1 = a.howmanyvalues+1) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.avalue) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 1 +3 1 +4 1 +drop table t1; +create table t1 (x int); +select (select b.x from t1 as b where b.x=a.x) from t1 as a where a.x=2 group by a.x; +(select b.x from t1 as b where b.x=a.x) +drop table t1; +CREATE TABLE `t1` ( `master` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `slave` int(10) unsigned NOT NULL default '0', `access` int(10) unsigned NOT NULL default '0', UNIQUE KEY `access_u` (`master`,`map`,`slave`)); +INSERT INTO `t1` VALUES (1,0,0,700),(1,1,1,400),(1,5,5,400),(1,12,12,400),(1,12,32,400),(4,12,32,400); +CREATE TABLE `t2` ( `id` int(10) unsigned NOT NULL default '0', `pid` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `level` tinyint(4) unsigned NOT NULL default '0', `title` varchar(255) default NULL, PRIMARY KEY (`id`,`pid`,`map`), KEY `level` (`level`), KEY `id` (`id`,`map`)) ; +INSERT INTO `t2` VALUES (6,5,12,7,'a'),(12,0,0,7,'a'),(12,1,0,7,'a'),(12,5,5,7,'a'),(12,5,12,7,'a'); +SELECT b.sc FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ERROR 42S22: Unknown column 'b.sc' in 'field list' +SELECT b.ac FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ac +700 +NULL +drop tables t1,t2; +create table t1 (a int not null, b int not null, c int, primary key (a,b)); +insert into t1 values (1,1,1), (2,2,2), (3,3,3); +set @b:= 0; +explain select sum(a) from t1 where b > @b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 8 NULL 3 Using where; Using index +set @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +do @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +drop table t1; +set @got_val= (SELECT 1 FROM (SELECT 'A' as my_col) as T1 ) ; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,1),(1,2),(1,3),(2,4),(2,5); +insert into t2 values (1,3),(2,1); +select distinct a,b, (select max(b) from t2 where t1.b=t2.a) from t1 order by t1.b; +a b (select max(b) from t2 where t1.b=t2.a) +1 1 3 +1 2 1 +1 3 NULL +2 4 NULL +2 5 NULL +drop table t1, t2; +create table t1 (id int); +create table t2 (id int, body text, fulltext (body)); +insert into t1 values(1),(2),(3); +insert into t2 values (1,'test'), (2,'mysql'), (3,'test'), (4,'test'); +select count(distinct id) from t1 where id in (select id from t2 where match(body) against ('mysql' in boolean mode)); +count(distinct id) +1 +drop table t2,t1; +create table t1 (s1 int,s2 int); +insert into t1 values (20,15); +select * from t1 where (('a',null) <=> (select 'a',s2 from t1 where s1 = 0)); +s1 s2 +drop table t1; +create table t1 (s1 int); +insert into t1 values (1),(null); +select * from t1 where s1 < all (select s1 from t1); +s1 +select s1, s1 < all (select s1 from t1) from t1; +s1 s1 < all (select s1 from t1) +1 0 +NULL NULL +drop table t1; +CREATE TABLE t1 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '' +) ENGINE=MyISAM; +INSERT INTO t1 VALUES ('XXX','Xxxxx','Oceania','Xxxxxx',26.00,0,0,0,0,0,'Xxxxx','Xxxxx','Xxxxx',NULL,'XX'); +INSERT INTO t1 VALUES ('ASM','American Samoa','Oceania','Polynesia',199.00,0,68000,75.1,334.00,NULL,'Amerika Samoa','US Territory','George W. Bush',54,'AS'); +INSERT INTO t1 VALUES ('ATF','French Southern territories','Antarctica','Antarctica',7780.00,0,0,NULL,0.00,NULL,'Terres australes françaises','Nonmetropolitan Territory of France','Jacques Chirac',NULL,'TF'); +INSERT INTO t1 VALUES ('UMI','United States Minor Outlying Islands','Oceania','Micronesia/Caribbean',16.00,0,0,NULL,0.00,NULL,'United States Minor Outlying Islands','Dependent Territory of the US','George W. Bush',NULL,'UM'); +/*!40000 ALTER TABLE t1 ENABLE KEYS */; +SELECT DISTINCT Continent AS c FROM t1 outr WHERE +Code <> SOME ( SELECT Code FROM t1 WHERE Continent = outr.Continent AND +Population < 200); +c +Oceania +drop table t1; +create table t1 (a1 int); +create table t2 (b1 int); +select * from t1 where a2 > any(select b1 from t2); +ERROR 42S22: Unknown column 'a2' in 'IN/ALL/ANY subquery' +select * from t1 where a1 > any(select b1 from t2); +a1 +drop table t1,t2; +create table t1 (a integer, b integer); +select (select * from t1) = (select 1,2); +(select * from t1) = (select 1,2) +NULL +select (select 1,2) = (select * from t1); +(select 1,2) = (select * from t1) +NULL +select row(1,2) = ANY (select * from t1); +row(1,2) = ANY (select * from t1) +0 +select row(1,2) != ALL (select * from t1); +row(1,2) != ALL (select * from t1) +1 +drop table t1; +create table t1 (a integer, b integer); +select row(1,(2,2)) in (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select row(1,(2,2)) = (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select (select * from t1) = row(1,(2,2)); +ERROR 21000: Operand should contain 1 column(s) +drop table t1; +create table t1 (a integer); +insert into t1 values (1); +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx ; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 as xx, 1 = ALL ( select 1 from t1 where 1 = xx ); +xx 1 = ALL ( select 1 from t1 where 1 = xx ) +1 1 +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx from DUAL; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +drop table t1; +CREATE TABLE t1 ( +categoryId int(11) NOT NULL, +courseId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +attributes text NOT NULL +); +INSERT INTO t1 VALUES (1,41,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(1,86,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(1,87,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,52,'2004-03-15','2004-10-01','2004-03-15','2004-09-17',''), +(2,53,'2004-03-16','2004-10-01','2004-03-16','2004-09-17',''), +(2,88,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,89,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(3,51,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(5,12,'2004-02-18','2010-01-01','2004-02-18','2004-02-18',''); +CREATE TABLE t2 ( +userId int(11) NOT NULL, +courseId int(11) NOT NULL, +date datetime NOT NULL +); +INSERT INTO t2 VALUES (5141,71,'2003-11-18'), +(5141,72,'2003-11-25'),(5141,41,'2004-08-06'), +(5141,52,'2004-08-06'),(5141,53,'2004-08-06'), +(5141,12,'2004-08-06'),(5141,86,'2004-10-21'), +(5141,87,'2004-10-21'),(5141,88,'2004-10-21'), +(5141,89,'2004-10-22'),(5141,51,'2004-10-26'); +CREATE TABLE t3 ( +groupId int(11) NOT NULL, +parentId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +ordering int(11) +); +INSERT INTO t3 VALUES (12,9,'1000-01-01','3999-12-31','2004-01-29','2004-01-29',NULL); +CREATE TABLE t4 ( +id int(11) NOT NULL, +groupTypeId int(11) NOT NULL, +groupKey varchar(50) NOT NULL, +name text, +ordering int(11), +description text, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t4 VALUES (9,5,'stationer','stationer',0,'Stationer','2004-01-29','2004-01-29'), +(12,5,'group2','group2',0,'group2','2004-01-29','2004-01-29'); +CREATE TABLE t5 ( +userId int(11) NOT NULL, +groupId int(11) NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t5 VALUES (5141,12,'2004-08-06','2004-08-06'); +select +count(distinct t2.userid) pass, +groupstuff.*, +count(t2.courseid) crse, +t1.categoryid, +t2.courseid, +date_format(date, '%b%y') as colhead +from t2 +join t1 on t2.courseid=t1.courseid +join +( +select +t5.userid, +parentid, +parentgroup, +childid, +groupname, +grouptypeid +from t5 +join +( +select t4.id as parentid, +t4.name as parentgroup, +t4.id as childid, +t4.name as groupname, +t4.grouptypeid +from t4 +) as gin on t5.groupid=gin.childid +) as groupstuff on t2.userid = groupstuff.userid +group by +groupstuff.groupname, colhead , t2.courseid; +pass userid parentid parentgroup childid groupname grouptypeid crse categoryid courseid colhead +1 5141 12 group2 12 group2 5 1 5 12 Aug04 +1 5141 12 group2 12 group2 5 1 1 41 Aug04 +1 5141 12 group2 12 group2 5 1 2 52 Aug04 +1 5141 12 group2 12 group2 5 1 2 53 Aug04 +1 5141 12 group2 12 group2 5 1 3 51 Oct04 +1 5141 12 group2 12 group2 5 1 1 86 Oct04 +1 5141 12 group2 12 group2 5 1 1 87 Oct04 +1 5141 12 group2 12 group2 5 1 2 88 Oct04 +1 5141 12 group2 12 group2 5 1 2 89 Oct04 +drop table t1, t2, t3, t4, t5; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SELECT 1 FROM t1 WHERE (SELECT 1) in (SELECT 1); +1 +1 +1 +1 +drop table t1; +create table t1 (a int); +create table t2 (a int); +insert into t1 values (1),(2); +insert into t2 values (0),(1),(2),(3); +select a from t2 where a in (select a from t1); +a +1 +2 +select a from t2 having a in (select a from t1); +a +1 +2 +prepare stmt1 from "select a from t2 where a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +prepare stmt1 from "select a from t2 having a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +drop table t1, t2; +create table t1 (a int, b int); +insert into t1 values (1,2); +select 1 = (select * from t1); +ERROR 21000: Operand should contain 1 column(s) +select (select * from t1) = 1; +ERROR 21000: Operand should contain 2 column(s) +select (1,2) = (select a from t1); +ERROR 21000: Operand should contain 2 column(s) +select (select a from t1) = (1,2); +ERROR 21000: Operand should contain 1 column(s) +select (1,2,3) = (select * from t1); +ERROR 21000: Operand should contain 3 column(s) +select (select * from t1) = (1,2,3); +ERROR 21000: Operand should contain 2 column(s) +drop table t1; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (one int, two int, flag char(1)); +CREATE TABLE t2 (one int, two int, flag char(1)); +INSERT INTO t1 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +INSERT INTO t2 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t2 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t1 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +insert into t2 values (null,null,'N'); +insert into t2 values (null,3,'0'); +insert into t2 values (null,5,'0'); +insert into t2 values (10,null,'0'); +insert into t1 values (10,3,'0'); +insert into t1 values (10,5,'0'); +insert into t1 values (10,10,'0'); +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +one two +5 6 +7 8 +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = 'N') and (<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) and (<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`))))) +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +DROP TABLE t1,t2; +CREATE TABLE t1 (a char(5), b char(5)); +INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa'); +SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb')); +a b +aaa aaa +DROP TABLE t1; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int, b int); +CREATE TABLE t3 (b int NOT NULL); +INSERT INTO t1 VALUES (1), (2), (3), (4); +INSERT INTO t2 VALUES (1,10), (3,30); +SELECT * FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10; +a b b +SELECT * FROM t1 +WHERE t1.a NOT IN (SELECT a FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10); +a +1 +2 +3 +4 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (f1 INT); +CREATE TABLE t2 (f2 INT); +INSERT INTO t1 VALUES (1); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2); +f1 +1 +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE 1=0); +f1 +1 +INSERT INTO t2 VALUES (1); +INSERT INTO t2 VALUES (2); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE f2=0); +f1 +1 +DROP TABLE t1, t2; +select 1 from dual where 1 < any (select 2); +1 +1 +select 1 from dual where 1 < all (select 2); +1 +1 +select 1 from dual where 2 > any (select 1); +1 +1 +select 1 from dual where 2 > all (select 1); +1 +1 +select 1 from dual where 1 < any (select 2 from dual); +1 +1 +select 1 from dual where 1 < all (select 2 from dual where 1!=1); +1 +1 +create table t1 (s1 char); +insert into t1 values (1),(2); +select * from t1 where (s1 < any (select s1 from t1)); +s1 +1 +select * from t1 where not (s1 < any (select s1 from t1)); +s1 +2 +select * from t1 where (s1 < ALL (select s1+1 from t1)); +s1 +1 +select * from t1 where not(s1 < ALL (select s1+1 from t1)); +s1 +2 +select * from t1 where (s1+1 = ANY (select s1 from t1)); +s1 +1 +select * from t1 where NOT(s1+1 = ANY (select s1 from t1)); +s1 +2 +select * from t1 where (s1 = ALL (select s1/s1 from t1)); +s1 +1 +select * from t1 where NOT(s1 = ALL (select s1/s1 from t1)); +s1 +2 +drop table t1; +create table t1 ( +retailerID varchar(8) NOT NULL, +statusID int(10) unsigned NOT NULL, +changed datetime NOT NULL, +UNIQUE KEY retailerID (retailerID, statusID, changed) +); +INSERT INTO t1 VALUES("0026", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0026", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0037", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0037", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0048", "1", "2006-01-06 12:37:50"); +INSERT INTO t1 VALUES("0059", "1", "2006-01-06 12:37:50"); +select * from t1 r1 +where (r1.retailerID,(r1.changed)) in +(SELECT r2.retailerId,(max(changed)) from t1 r2 +group by r2.retailerId); +retailerID statusID changed +0026 2 2006-01-06 12:25:53 +0037 2 2006-01-06 12:25:53 +0048 1 2006-01-06 12:37:50 +0059 1 2006-01-06 12:37:50 +drop table t1; +create table t1(a int, primary key (a)); +insert into t1 values (10); +create table t2 (a int primary key, b varchar(32), c int, unique key b(c, b)); +insert into t2(a, c, b) values (1,10,'359'), (2,10,'35988'), (3,10,'35989'); +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +a a b +10 3 35989 +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +a a b +10 1 359 +drop table t1,t2; +CREATE TABLE t1 ( +field1 int NOT NULL, +field2 int NOT NULL, +field3 int NOT NULL, +PRIMARY KEY (field1,field2,field3) +); +CREATE TABLE t2 ( +fieldA int NOT NULL, +fieldB int NOT NULL, +PRIMARY KEY (fieldA,fieldB) +); +INSERT INTO t1 VALUES +(1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1); +INSERT INTO t2 VALUES (1,1), (1,2), (1,3); +SELECT field1, field2, COUNT(*) +FROM t1 GROUP BY field1, field2; +field1 field2 COUNT(*) +1 1 2 +1 2 3 +1 3 1 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) >= ALL (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 2 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) < ANY (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 1 +1 3 +DROP TABLE t1, t2; +CREATE TABLE t1(a int, INDEX (a)); +INSERT INTO t1 VALUES (1), (3), (5), (7); +INSERT INTO t1 VALUES (NULL); +CREATE TABLE t2(a int); +INSERT INTO t2 VALUES (1),(2),(3); +EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index; Full scan on NULL key +SELECT a, a IN (SELECT a FROM t1) FROM t2; +a a IN (SELECT a FROM t1) +1 1 +2 NULL +3 1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a DATETIME); +INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25'); +CREATE TABLE t2 AS SELECT +(SELECT a FROM t1 WHERE a < '2000-01-01') AS sub_a +FROM t1 WHERE a > '2000-01-01'; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `sub_a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +CREATE TABLE t3 AS (SELECT a FROM t1 WHERE a < '2000-01-01') UNION (SELECT a FROM t1 WHERE a > '2000-01-01'); +SHOW CREATE TABLE t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) > 0; +a +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +a +1 +2 +EXPLAIN SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +DROP TABLE t1; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2), (4), (1), (3); +CREATE TABLE t2 (b int, c int); +INSERT INTO t2 VALUES +(2,1), (1,3), (2,1), (4,4), (2,2), (1,4); +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2 ); +a +2 +4 +1 +3 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2), a; +a +1 +2 +3 +4 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1), a; +ERROR 21000: Subquery returns more than 1 row +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 2); +b MAX(c) +1 4 +2 2 +4 4 +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +1 +2 +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +4 +1 +3 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +1 +3 +4 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +DROP TABLE t1,t2; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +insert into t1 values(2.2); +select * from t1 where df <= all (select avg(df) from t1 group by df); +df +1.1 +select * from t1 where df >= all (select avg(df) from t1 group by df); +df +2.2 +drop table t1; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +select 1.1 * exists(select * from t1); +1.1 * exists(select * from t1) +1.1 +drop table t1; +CREATE TABLE t1 ( +grp int(11) default NULL, +a decimal(10,2) default NULL); +insert into t1 values (1, 1), (2, 2), (2, 3), (3, 4), (3, 5), (3, 6), (NULL, NULL); +select * from t1; +grp a +1 1.00 +2 2.00 +2 3.00 +3 4.00 +3 5.00 +3 6.00 +NULL NULL +select min(a) from t1 group by grp; +min(a) +NULL +1.00 +2.00 +4.00 +drop table t1; +CREATE table t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 WHERE c2 IN (1); +c1 c2 +1 1 +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE c2 IN ( SELECT c2 FROM t2 WHERE c2 IN ( 1 ) ); +c1 c2 +1 1 +DROP TABLE t1,t2; +CREATE TABLE t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +INSERT INTO t1 VALUES ( 6 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +INSERT INTO t2 VALUES ( 6 ); +CREATE TABLE t3 ( c3 integer ); +INSERT INTO t3 VALUES ( 7 ); +INSERT INTO t3 VALUES ( 8 ); +SELECT c1,c2 FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE EXISTS (SELECT c3 FROM t3 WHERE c2 IS NULL ); +c1 c2 +2 NULL +3 NULL +DROP TABLE t1,t2,t3; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +CREATE TABLE t1 (EMPNUM CHAR(3)); +CREATE TABLE t2 (EMPNUM CHAR(3) ); +INSERT INTO t1 VALUES ('E1'),('E2'); +INSERT INTO t2 VALUES ('E1'); +DELETE FROM t1 +WHERE t1.EMPNUM NOT IN +(SELECT t2.EMPNUM +FROM t2 +WHERE t1.EMPNUM = t2.EMPNUM); +select * from t1; +EMPNUM +E1 +DROP TABLE t1,t2; +CREATE TABLE t1(select_id BIGINT, values_id BIGINT); +INSERT INTO t1 VALUES (1, 1); +CREATE TABLE t2 (select_id BIGINT, values_id BIGINT, +PRIMARY KEY(select_id,values_id)); +INSERT INTO t2 VALUES (0, 1), (0, 2), (0, 3), (1, 5); +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id IN (1, 0)); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id BETWEEN 0 AND 1); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id = 0 OR select_id = 1); +values_id +1 +DROP TABLE t1, t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (c int, d int); +CREATE TABLE t3 (e int); +INSERT INTO t1 VALUES +(1,10), (2,10), (1,20), (2,20), (3,20), (2,30), (4,40); +INSERT INTO t2 VALUES +(2,10), (2,20), (4,10), (5,10), (3,20), (2,40); +INSERT INTO t3 VALUES (10), (30), (10), (20) ; +SELECT a, MAX(b), MIN(b) FROM t1 GROUP BY a; +a MAX(b) MIN(b) +1 20 10 +2 30 10 +3 20 20 +4 40 40 +SELECT * FROM t2; +c d +2 10 +2 20 +4 10 +5 10 +3 20 +2 40 +SELECT * FROM t3; +e +10 +30 +10 +20 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>20); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)<d); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>d); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d >= SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d > SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e < d)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE MIN(b) < d AND +EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +SELECT a, SUM(a) FROM t1 GROUP BY a; +a SUM(a) +1 2 +2 6 +3 3 +4 4 +SELECT a FROM t1 +WHERE EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c) GROUP BY a; +a +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c); +a +1 +3 +4 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c) GROUP BY a; +a +1 +2 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c); +a +1 +2 +1 +2 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a < ALL(SELECT t2.c FROM t2 GROUP BY t2.c +HAVING EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +1 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 +WHERE SUM(t1.a+t2.c) < t3.e/4)); +ERROR HY000: Invalid use of group function +SELECT t1.a from t1 GROUP BY t1.a HAVING AVG(SUM(t1.b)) > 20; +ERROR HY000: Invalid use of group function +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(t2.c+SUM(t1.b)) > 20); +a +2 +3 +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(SUM(t1.b)) > 20); +a +2 +4 +SELECT t1.a, SUM(b) AS sum FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING t2.c+sum > 20); +a sum +2 60 +3 20 +4 40 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a varchar(5), b varchar(10)); +INSERT INTO t1 VALUES +('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2), +('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +ALTER TABLE t1 ADD INDEX(a); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 DEPENDENT SUBQUERY t1 index NULL a 8 NULL 1 Using filesort +DROP TABLE t1; +create table t1( f1 int,f2 int); +insert into t1 values (1,1),(2,2); +select tt.t from (select 'crash1' as t, f2 from t1) as tt left join t1 on tt.t = 'crash2' and tt.f2 = t1.f2 where tt.t = 'crash1'; +t +crash1 +crash1 +drop table t1; +create table t1 (c int, key(c)); +insert into t1 values (1142477582), (1142455969); +create table t2 (a int, b int); +insert into t2 values (2, 1), (1, 0); +delete from t1 where c <= 1140006215 and (select b from t2 where a = 2) = 1; +drop table t1, t2; +CREATE TABLE t1 (a INT); +CREATE VIEW v1 AS SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +CREATE VIEW v2 AS SELECT * FROM t1 WHERE no_such_column = (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'IN/ALL/ANY subquery' +DROP TABLE t1; +create table t1 (i int, j bigint); +insert into t1 values (1, 2), (2, 2), (3, 2); +select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3; +min(i) +1 +drop table t1; +CREATE TABLE t1 (i BIGINT UNSIGNED); +INSERT INTO t1 VALUES (10000000000000000000); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (i BIGINT UNSIGNED); +INSERT INTO t2 VALUES (10000000000000000000); +INSERT INTO t2 VALUES (1); +/* simple test */ +SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i; +i +10000000000000000000 +1 +/* subquery test */ +SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2); +i +10000000000000000000 +/* subquery test with cast*/ +SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED); +i +10000000000000000000 +DROP TABLE t1; +DROP TABLE t2; +CREATE TABLE t1 ( +id bigint(20) unsigned NOT NULL auto_increment, +name varchar(255) NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES +(1, 'Balazs'), (2, 'Joe'), (3, 'Frank'); +CREATE TABLE t2 ( +id bigint(20) unsigned NOT NULL auto_increment, +mid bigint(20) unsigned NOT NULL, +date date NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t2 VALUES +(1, 1, '2006-03-30'), (2, 2, '2006-04-06'), (3, 3, '2006-04-13'), +(4, 2, '2006-04-20'), (5, 1, '2006-05-01'); +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 3, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 NULL +2 Joe 2006-04-20 NULL +3 Frank 2006-04-13 NULL +SELECT *, +(SELECT COUNT(*) FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_count +FROM t1; +id name date_count +1 Balazs NULL +2 Joe NULL +3 Frank NULL +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 2006-03-30 +2 Joe 2006-04-20 2006-04-06 +3 Frank 2006-04-13 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime NOT NULL default '0000-00-00 00:00:00', +PRIMARY KEY (i1,i2,t) +); +INSERT INTO t1 VALUES +(24,1,'2005-03-03 16:31:31'),(24,1,'2005-05-27 12:40:07'), +(24,1,'2005-05-27 12:40:08'),(24,1,'2005-05-27 12:40:10'), +(24,1,'2005-05-27 12:40:25'),(24,1,'2005-05-27 12:40:30'), +(24,2,'2005-03-03 13:43:05'),(24,2,'2005-03-03 16:23:31'), +(24,2,'2005-03-03 16:31:30'),(24,2,'2005-05-27 12:37:02'), +(24,2,'2005-05-27 12:40:06'); +CREATE TABLE t2 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime default NULL, +PRIMARY KEY (i1) +); +INSERT INTO t2 VALUES (24,1,'2006-06-20 12:29:40'); +EXPLAIN +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY t1 index NULL PRIMARY 16 NULL 11 Using where; Using index +2 DEPENDENT SUBQUERY t1 range PRIMARY PRIMARY 16 NULL 5 Using where; Using index +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +i1 i2 t i1 i2 t +24 1 2005-05-27 12:40:30 24 1 2006-06-20 12:29:40 +DROP TABLE t1, t2; +CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b)); +insert into t1 (a) values (FLOOR(rand() * 100)); +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +SELECT a, +(SELECT REPEAT(' ',250) FROM t1 i1 +WHERE i1.b=t1.a ORDER BY RAND() LIMIT 1) AS a +FROM t1 ORDER BY a LIMIT 5; +a a +0 NULL +0 NULL +0 NULL +0 NULL +0 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT); +INSERT INTO t2 values (1); +INSERT INTO t1 VALUES (1,1),(1,2),(2,3),(3,4); +SELECT (SELECT COUNT(DISTINCT t1.b) from t2) FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2) +2 +1 +1 +SELECT (SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +2 +1 +1 +SELECT COUNT(DISTINCT t1.b), (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b)) +2 2 +1 1 +1 1 +SELECT COUNT(DISTINCT t1.b), +(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +2 2 +1 1 +1 1 +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a; +( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +2 +1 +1 +SELECT ( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +FROM t1 t2 +GROUP BY t2.a; +( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +2 +2 +2 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, PRIMARY KEY (b)); +CREATE TABLE t2 (x int auto_increment, y int, z int, +PRIMARY KEY (x), FOREIGN KEY (y) REFERENCES t1 (b)); +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 select RAND()*1000, A.a + 10*(B.a+10*(C.a+10*D.a)) +from t3 A, t3 B, t3 C, t3 D where D.a<3; +insert into t2(y,z) select t1.b, RAND()*1000 from t1, t3; +SET SESSION sort_buffer_size = 32 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +SET SESSION sort_buffer_size = 8 * 1024 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id char(4) PRIMARY KEY, c int); +CREATE TABLE t2 (c int); +INSERT INTO t1 VALUES ('aa', 1); +INSERT INTO t2 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +INSERT INTO t2 VALUES (2); +CREATE TABLE t3 (c int); +INSERT INTO t3 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1(f1 int); +CREATE TABLE t2(f2 int, f21 int, f3 timestamp); +INSERT INTO t1 VALUES (1),(1),(2),(2); +INSERT INTO t2 VALUES (1,1,"2004-02-29 11:11:11"), (2,2,"2004-02-29 11:11:11"); +SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1; +sq +2 +4 +SELECT (SELECT SUM(1) FROM t2 ttt GROUP BY t2.f3 LIMIT 1) AS tt FROM t2; +tt +2 +2 +PREPARE stmt1 FROM 'SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1'; +EXECUTE stmt1; +sq +2 +4 +EXECUTE stmt1; +sq +2 +4 +DEALLOCATE PREPARE stmt1; +SELECT f2, AVG(f21), +(SELECT t.f3 FROM t2 AS t WHERE t2.f2=t.f2 AND t.f3=MAX(t2.f3)) AS test +FROM t2 GROUP BY f2; +f2 AVG(f21) test +1 1.0000 2004-02-29 11:11:11 +2 2.0000 2004-02-29 11:11:11 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL); +INSERT INTO t1 VALUES +(1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'), +(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'), (3,3,'j'), +(3,2,'k'), (3,1,'l'), (1,9,'m'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) AS test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +DROP TABLE t1; +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +DROP TABLE IF EXISTS t1xt2; +CREATE TABLE t1 ( +id_1 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t2 ( +id_2 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t1xt2 ( +id_1 int(5) NOT NULL, +id_2 int(5) NOT NULL +); +INSERT INTO t1 VALUES (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd'); +INSERT INTO t2 VALUES (2, 'bb'), (3, 'cc'), (4, 'dd'), (12, 'aa'); +INSERT INTO t1xt2 VALUES (2, 2), (3, 3), (4, 4); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +3 +4 +insert INTO t1xt2 VALUES (1, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +2 +3 +4 +insert INTO t1xt2 VALUES (2, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +3 +4 +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t1xt2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (3), (1), (2); +SELECT 'this is ' 'a test.' AS col1, a AS col2 FROM t1; +col1 col2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +SELECT * FROM (SELECT 'this is ' 'a test.' AS col1, a AS t2 FROM t1) t; +col1 t2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +DROP table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*), a, +(SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a, +(SELECT MIN(m) FROM t2 WHERE m = count(*)) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT MIN(m) FROM t2 WHERE m = count(*)) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a +FROM t1 GROUP BY a +HAVING (SELECT MIN(m) FROM t2 WHERE m = count(*)) > 1; +COUNT(*) a +2 2 +3 3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +2 2 2 +3 3 3 +1 4 1,1 +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +2 2 3 +3 3 4 +1 4 2,2 +DROP table t1,t2; +CREATE TABLE t1 (a int, b INT, d INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t1 VALUES (1,1,0,'a'), (1,2,0,'b'), (1,3,0,'c'), (1,4,0,'d'), +(1,5,0,'e'), (2,1,0,'f'), (2,2,0,'g'), (2,3,0,'h'), (3,4,0,'i'), (3,3,0,'j'), +(3,2,0,'k'), (3,1,0,'l'), (1,9,0,'m'), (1,0,10,'n'), (2,0,5,'o'), (3,0,7,'p'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a x, MAX(b), +(SELECT t.c FROM t1 AS t WHERE x=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +x MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a, AVG(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=AVG(t1.b)) AS test +FROM t1 WHERE t1.d=0 GROUP BY a; +a AVG(b) test +1 4.0000 d +2 2.0000 g +3 2.5000 NULL +SELECT tt.a, +(SELECT (SELECT c FROM t1 as t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt; +a test +1 n +1 n +1 n +1 n +1 n +1 n +1 n +2 o +2 o +2 o +2 o +3 p +3 p +3 p +3 p +3 p +SELECT tt.a, +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +SELECT tt.a, MAX( +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1)) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +DROP TABLE t1; +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 values (1),(1),(1),(1); +CREATE TABLE t2 (x INT); +INSERT INTO t1 values (1000),(1001),(1002); +SELECT SUM( (SELECT COUNT(a) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT SUM( (SELECT SUM(COUNT(a)) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT COUNT(1) FROM DUAL; +COUNT(1) +1 +SELECT SUM( (SELECT AVG( (SELECT t1.a FROM t2) ) FROM DUAL) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING t1.a < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +SELECT t1.a as XXA, +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING XXA < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, KEY (a)); +INSERT INTO t1 VALUES (1,1),(2,1); +EXPLAIN SELECT 1 FROM t1 WHERE a = (SELECT COUNT(*) FROM t1 GROUP BY b); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref a a 5 const 1 Using where; Using index +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +DROP TABLE t1; +CREATE TABLE t1 (id int NOT NULL, st CHAR(2), INDEX idx(id)); +INSERT INTO t1 VALUES +(3,'FL'), (2,'GA'), (4,'FL'), (1,'GA'), (5,'NY'), (7,'FL'), (6,'NY'); +CREATE TABLE t2 (id int NOT NULL, INDEX idx(id)); +INSERT INTO t2 VALUES (7), (5), (1), (3); +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +3 FL +1 GA +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +1 GA +3 FL +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +2 GA +4 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +2 GA +4 FL +DROP TABLE t1,t2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +EXPLAIN EXTENDED +SELECT * FROM (SELECT count(*) FROM t1 GROUP BY a) as res; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `res`.`count(*)` AS `count(*)` from (select count(0) AS `count(*)` from `test`.`t1` group by `test`.`t1`.`a`) `res` +DROP TABLE t1; +CREATE TABLE t1 ( +a varchar(255) default NULL, +b timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, +INDEX idx(a,b) +); +CREATE TABLE t2 ( +a varchar(255) default NULL +); +INSERT INTO t1 VALUES ('abcdefghijk','2007-05-07 06:00:24'); +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO `t1` VALUES ('asdf','2007-02-08 01:11:26'); +INSERT INTO `t2` VALUES ('abcdefghijk'); +INSERT INTO `t2` VALUES ('asdf'); +SET session sort_buffer_size=8192; +SELECT (SELECT 1 FROM t1 WHERE t1.a=t2.a ORDER BY t1.b LIMIT 1) AS d1 FROM t2; +d1 +1 +1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INTEGER, b INTEGER); +CREATE TABLE t2 (x INTEGER); +INSERT INTO t1 VALUES (1,11), (2,22), (2,22); +INSERT INTO t2 VALUES (1), (2); +SELECT a, COUNT(b), (SELECT COUNT(b) FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT a, COUNT(b), (SELECT COUNT(b)+0 FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a)/AVG(t2.x) FROM t2) FROM t1; +(SELECT SUM(t1.a)/AVG(t2.x) FROM t2) +3.3333 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (1, 2), (1,3), (1,4), (2,1), (2,2); +SELECT a1.a, COUNT(*) FROM t1 a1 WHERE a1.a = 1 +AND EXISTS( SELECT a2.a FROM t1 a2 WHERE a2.a = a1.a) +GROUP BY a1.a; +a COUNT(*) +1 3 +DROP TABLE t1; +CREATE TABLE t1 (a INT); +CREATE TABLE t2 (a INT); +INSERT INTO t1 VALUES (1),(2); +INSERT INTO t2 VALUES (1),(2); +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=0) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=0) +NULL +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=1) +3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a1 INT, a2 INT); +CREATE TABLE t2 (b1 INT, b2 INT); +INSERT INTO t1 VALUES (100, 200); +INSERT INTO t1 VALUES (101, 201); +INSERT INTO t2 VALUES (101, 201); +INSERT INTO t2 VALUES (103, 203); +SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1; +((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL +0 +0 +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 BINARY(5), s2 VARBINARY(5)); +INSERT INTO t1 VALUES (0x41,0x41), (0x42,0x42), (0x43,0x43); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +CREATE INDEX I1 ON t1 (s1); +CREATE INDEX I2 ON t1 (s2); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +TRUNCATE t1; +INSERT INTO t1 VALUES (0x41,0x41); +SELECT * FROM t1 WHERE s1 = (SELECT s2 FROM t1); +s1 s2 +DROP TABLE t1; +CREATE TABLE t1 (a1 VARBINARY(2) NOT NULL DEFAULT '0', PRIMARY KEY (a1)); +CREATE TABLE t2 (a2 BINARY(2) default '0', INDEX (a2)); +CREATE TABLE t3 (a3 BINARY(2) default '0'); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT LEFT(t2.a2, 1) FROM t2,t3 WHERE t3.a3=t2.a2; +LEFT(t2.a2, 1) +1 +2 +3 +SELECT t1.a1, t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) FROM t1; +a1 t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) +1 0 +2 0 +3 0 +4 0 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a1 BINARY(3) PRIMARY KEY, b1 VARBINARY(3)); +CREATE TABLE t2 (a2 VARBINARY(3) PRIMARY KEY); +CREATE TABLE t3 (a3 VARBINARY(3) PRIMARY KEY); +INSERT INTO t1 VALUES (1,10), (2,20), (3,30), (4,40); +INSERT INTO t2 VALUES (2), (3), (4), (5); +INSERT INTO t3 VALUES (10), (20), (30); +SELECT LEFT(t1.a1,1) FROM t1,t3 WHERE t1.b1=t3.a3; +LEFT(t1.a1,1) +1 +2 +3 +SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); +a2 +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); +INSERT INTO t1 VALUES ('a', 'aa'); +INSERT INTO t1 VALUES ('a', 'aaa'); +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE INDEX I1 ON t1 (a); +CREATE INDEX I2 ON t1 (b); +EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10)); +INSERT INTO t2 SELECT * FROM t1; +CREATE INDEX I1 ON t2 (a); +CREATE INDEX I2 ON t2 (b); +EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY t2 index_subquery I1 I1 4 func 2 Using index; Using where +SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +a b +EXPLAIN +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(a INT, b INT); +INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1_outer ALL NULL NULL NULL NULL 4 Using where; Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 4 Using where +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +out_a MIN(b) +1 2 +2 4 +DROP TABLE t1; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(f11 int, f12 int); +create table t2(f21 int unsigned not null, f22 int, f23 varchar(10)); +insert into t1 values(1,1),(2,2), (3, 3); +insert into t2 +select -1 , (@a:=(A.a + 10 * (B.a + 10 * (C.a+10*D.a))))/5000 + 1, @a +from t0 A, t0 B, t0 C, t0 D; +set session sort_buffer_size= 33*1024; +select count(*) from t1 where f12 = +(select f22 from t2 where f22 = f12 order by f21 desc, f22, f23 limit 1); +count(*) +3 +drop table t0,t1,t2; +CREATE TABLE t4 ( +f7 varchar(32) collate utf8_bin NOT NULL default '', +f10 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f7) +); +INSERT INTO t4 VALUES(1,1), (2,null); +CREATE TABLE t2 ( +f4 varchar(32) collate utf8_bin NOT NULL default '', +f2 varchar(50) collate utf8_bin default NULL, +f3 varchar(10) collate utf8_bin default NULL, +PRIMARY KEY (f4), +UNIQUE KEY uk1 (f2) +); +INSERT INTO t2 VALUES(1,1,null), (2,2,null); +CREATE TABLE t1 ( +f8 varchar(32) collate utf8_bin NOT NULL default '', +f1 varchar(10) collate utf8_bin default NULL, +f9 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f8) +); +INSERT INTO t1 VALUES (1,'P',1), (2,'P',1), (3,'R',2); +CREATE TABLE t3 ( +f6 varchar(32) collate utf8_bin NOT NULL default '', +f5 varchar(50) collate utf8_bin default NULL, +PRIMARY KEY (f6) +); +INSERT INTO t3 VALUES (1,null), (2,null); +SELECT +IF(t1.f1 = 'R', a1.f2, t2.f2) AS a4, +IF(t1.f1 = 'R', a1.f3, t2.f3) AS f3, +SUM( +IF( +(SELECT VPC.f2 +FROM t2 VPC, t4 a2, t2 a3 +WHERE +VPC.f4 = a2.f10 AND a3.f2 = a4 +LIMIT 1) IS NULL, +0, +t3.f5 +) +) AS a6 +FROM +t2, t3, t1 JOIN t2 a1 ON t1.f9 = a1.f4 +GROUP BY a4; +a4 f3 a6 +1 NULL NULL +2 NULL NULL +DROP TABLE t1, t2, t3, t4; +create table t1 (a float(5,4) zerofill); +create table t2 (a float(5,4),b float(2,0)); +select t1.a from t1 where +t1.a= (select b from t2 limit 1) and not +t1.a= (select a from t2 limit 1) ; +a +drop table t1, t2; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2); +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,<exists>(select 1 from `test`.`t1` group by `test`.`t1`.`a` having 1))) +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having 1)) +DROP TABLE t1; +# +# Bug#45061: Incorrectly market field caused wrong result. +# +CREATE TABLE `C` ( +`int_nokey` int(11) NOT NULL, +`int_key` int(11) NOT NULL, +KEY `int_key` (`int_key`) +); +INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4), +(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7), +(5,2), (1,8), (7,0), (0,9), (9,5); +SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +int_nokey int_key +9 9 +0 0 +5 5 +0 0 +EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where +DROP TABLE C; +# End of test for bug#45061. +# +# Bug #46749: Segfault in add_key_fields() with outer subquery level +# field references +# +CREATE TABLE t1 ( +a int, +b int, +UNIQUE (a), KEY (b) +); +INSERT INTO t1 VALUES (1,1), (2,1); +CREATE TABLE st1 like t1; +INSERT INTO st1 VALUES (1,1), (2,1); +CREATE TABLE st2 like t1; +INSERT INTO st2 VALUES (1,1), (2,1); +EXPLAIN +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +MAX(b) (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +NULL 0 +DROP TABLE t1, st1, st2; +# +# Bug #48709: Assertion failed in sql_select.cc:11782: +# int join_read_key(JOIN_TAB*) +# +CREATE TABLE t1 (pk int PRIMARY KEY, int_key int); +INSERT INTO t1 VALUES (10,1), (14,1); +CREATE TABLE t2 (pk int PRIMARY KEY, int_key int); +INSERT INTO t2 VALUES (3,3), (5,NULL), (7,3); +# should have eq_ref for t1 +EXPLAIN +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +id select_type table type possible_keys key key_len ref rows Extra +x x outr ALL x x x x x x +x x t1 eq_ref x x x x x x +x x t2 index x x x x x x +# should not crash on debug binaries +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +pk int_key +3 3 +7 3 +DROP TABLE t1,t2; +End of 5.0 tests. +create table t_out (subcase char(3), +a1 char(2), b1 char(2), c1 char(2)); +create table t_in (a2 char(2), b2 char(2), c2 char(2)); +insert into t_out values ('A.1','2a', NULL, '2a'); +insert into t_out values ('A.3', '2a', NULL, '2a'); +insert into t_out values ('A.4', '2a', NULL, 'xx'); +insert into t_out values ('B.1', '2a', '2a', '2a'); +insert into t_out values ('B.2', '2a', '2a', '2a'); +insert into t_out values ('B.3', '3a', 'xx', '3a'); +insert into t_out values ('B.4', 'xx', '3a', '3a'); +insert into t_in values ('1a', '1a', '1a'); +insert into t_in values ('2a', '2a', '2a'); +insert into t_in values (NULL, '2a', '2a'); +insert into t_in values ('3a', NULL, '3a'); + +Test general IN semantics (not top-level) + +case A.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'A.1'; +subcase pred_in pred_not_in +A.1 0 1 +case A.2 - impossible +case A.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.3'; +subcase pred_in pred_not_in +A.3 NULL NULL +case A.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.4'; +subcase pred_in pred_not_in +A.4 0 1 +case B.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'B.1'; +subcase pred_in pred_not_in +B.1 0 1 +case B.2 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.2'; +subcase pred_in pred_not_in +B.2 1 0 +case B.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.3'; +subcase pred_in pred_not_in +B.3 NULL NULL +case B.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.4'; +subcase pred_in pred_not_in +B.4 0 1 + +Test IN as top-level predicate, and +as non-top level for cases A.3, B.3 (the only cases with NULL result). + +case A.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case A.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'A.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case A.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +case B.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case B.2 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) IN (select * from t_in); +pred_in +T +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.2' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +case B.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'B.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case B.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +drop table t_out; +drop table t_in; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (s1 CHAR(1)); +INSERT INTO t1 VALUES ('a'); +SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1); +s1 +a +DROP TABLE t1; +CREATE TABLE t1(c INT, KEY(c)); +CREATE TABLE t2(a INT, b INT); +INSERT INTO t2 VALUES (1, 10), (2, NULL); +INSERT INTO t1 VALUES (1), (3); +SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(pk INT PRIMARY KEY, a INT, INDEX idx(a)); +INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20); +CREATE TABLE t2(pk INT PRIMARY KEY, a INT, b INT, INDEX idxa(a)); +INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100); +SELECT * FROM t1 +WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b); +pk a +1 10 +3 30 +2 20 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), KEY b (b)); +INSERT INTO t1 VALUES (1,NULL), (9,NULL); +CREATE TABLE t2 ( +a INT, +b INT, +c INT, +d INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c,d), +KEY b_2 (b), +KEY c (c), +KEY d (d) +); +INSERT INTO t2 VALUES +(43, 2, 11 ,30), +(44, 2, 12 ,30), +(45, 1, 1 ,10000), +(46, 1, 2 ,10000), +(556,1, 32 ,10000); +CREATE TABLE t3 ( +a INT, +b INT, +c INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c), +KEY c (c), +KEY b_2 (b) +); +INSERT INTO t3 VALUES (1,1,1), (2,32,1); +explain +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t3 ref b,b_2 b 5 test.t1.a 1 Using index +2 DEPENDENT SUBQUERY t2 ref b,b_2,c b 10 test.t3.c,test.t1.a 1 Using where; Using index; Using filesort +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +a incorrect +1 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int, c int); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +CREATE VIEW v1 AS +SELECT t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +UPDATE v1 SET c=1; +CREATE VIEW v2 (a,b) AS +SELECT t2.id, t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +INSERT INTO v2(a,b) VALUES (2,2); +ERROR HY000: CHECK OPTION failed 'test.v2' +SELECT * FROM v1; +c +1 +1 +1 +1 +CREATE VIEW v3 AS +SELECT t2.c AS c FROM t2 +WHERE 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +DELETE FROM v3; +DROP VIEW v1,v2,v3; +DROP TABLE t1,t2; +# +# BUG#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +# +# Bug#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +CREATE TABLE t1 (a ENUM('rainbow')); +INSERT INTO t1 VALUES (),(),(),(),(); +SELECT 1 FROM t1 GROUP BY (SELECT 1 FROM t1 ORDER BY AVG(LAST_INSERT_ID())); +1 +1 +DROP TABLE t1; +CREATE TABLE t1 (a LONGBLOB); +INSERT INTO t1 SET a = 'aaaa'; +INSERT INTO t1 SET a = 'aaaa'; +SELECT 1 FROM t1 GROUP BY +(SELECT LAST_INSERT_ID() FROM t1 ORDER BY MIN(a) ASC LIMIT 1); +1 +1 +DROP TABLE t1; +set @@optimizer_switch=@save_optimizer_switch; +# +# Bug #49512 : subquery with aggregate function crash +# subselect_single_select_engine::exec() +CREATE TABLE t1(a INT); +INSERT INTO t1 VALUES(); +# should not crash +SELECT 1 FROM t1 WHERE a <> SOME +( +SELECT MAX((SELECT a FROM t1 LIMIT 1)) AS d +FROM t1,t1 a +); +1 +DROP TABLE t1; +# +# Bug #45989 take 2 : memory leak after explain encounters an +# error in the query +# +CREATE TABLE t1(a LONGTEXT); +INSERT INTO t1 VALUES (repeat('a',@@global.max_allowed_packet)); +INSERT INTO t1 VALUES (repeat('b',@@global.max_allowed_packet)); +EXPLAIN EXTENDED SELECT DISTINCT 1 FROM t1, +(SELECT DISTINCTROW a AS away FROM t1 GROUP BY a WITH ROLLUP) AS d1 +WHERE t1.a = d1.a; +ERROR 42S22: Unknown column 'd1.a' in 'where clause' +DROP TABLE t1; +End of 5.1 tests. +Set up test tables. +CREATE TABLE t1 ( +t1_id INT UNSIGNED, +PRIMARY KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t1 (t1_id) VALUES (1), (2), (3), (4), (5); +CREATE TABLE t2 SELECT * FROM t1; +CREATE TABLE t3 ( +t3_id INT UNSIGNED AUTO_INCREMENT, +t1_id INT UNSIGNED, +amount DECIMAL(16,2), +PRIMARY KEY(t3_id), +KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t3 (t1_id, t3_id, amount) +VALUES (1, 1, 100.00), (2, 2, 200.00), (4, 4, 400.00); +This is the 'inner query' running by itself. +Produces correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query) +Produces correct results. +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +Now make t2.t1_id part of a key. +ALTER TABLE t2 ADD PRIMARY KEY(t1_id); +Same inner query by itself. +Still correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query), now with indexes on the LEFT JOIN +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +DROP TABLE t3; +DROP TABLE t2; +DROP TABLE t1; +# +# Bug #52711: Segfault when doing EXPLAIN SELECT with +# union...order by (select... where...) +# +CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a)); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (1),(2); +# Should not crash +EXPLAIN +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +# Should not crash +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +DROP TABLE t1,t2; +# LP BUG#675248 - select->prep_where references on freed memory +CREATE TABLE t1 (a int, b int); +insert into t1 values (1,1),(0,0); +CREATE TABLE t2 (c int); +insert into t2 values (1),(2); +prepare stmt1 from "select sum(a),(select sum(c) from t2 where table1.b) as sub +from t1 as table1 group by sub"; +execute stmt1; +sum(a) sub +0 NULL +1 3 +deallocate prepare stmt1; +prepare stmt1 from "select sum(a),(select sum(c) from t2 having table1.b) as sub +from t1 as table1"; +execute stmt1; +sum(a) sub +1 3 +deallocate prepare stmt1; +drop table t1,t2; +# +# Bug LP#693935/#58727: Assertion failure with +# a single row subquery returning more than one row +# +create table t1 (a char(1) charset utf8); +insert into t1 values ('a'), ('b'); +create table t2 (a binary(1)); +insert into t2 values ('x'), ('y'); +select * from t2 where a=(select a from t1) and a='x'; +ERROR 21000: Subquery returns more than 1 row +drop table t1,t2; +End of 5.1 tests +# +# No BUG#, a case brought from 5.2's innodb_mysql_lock.test +# +create table t1 (i int not null primary key); +insert into t1 values (1),(2),(3),(4),(5); +create table t2 (j int not null primary key); +insert into t2 values (1),(2),(3),(4),(5); +create table t3 (k int not null primary key); +insert into t3 values (1),(2),(3); +create view v2 as select t2.j as j from t2 where t2.j in (select t1.i from t1); +select * from t3 where k in (select j from v2); +k +1 +2 +3 +drop table t1,t2,t3; +drop view v2; +# +# Bug#52068: Optimizer generates invalid semijoin materialization plan +# +drop table if exists ot1, ot2, it1, it2; +CREATE TABLE ot1(a INTEGER); +INSERT INTO ot1 VALUES(5), (8); +CREATE TABLE it2(a INTEGER); +INSERT INTO it2 VALUES(9), (5), (1), (8); +CREATE TABLE it3(a INTEGER); +INSERT INTO it3 VALUES(7), (1), (0), (5), (1), (4); +CREATE TABLE ot4(a INTEGER); +INSERT INTO ot4 VALUES(1), (3), (5), (7), (9), (7), (3), (1); +SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +a a +5 1 +8 1 +5 5 +8 5 +5 7 +8 7 +5 7 +8 7 +5 1 +8 1 +explain SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot1 ALL NULL NULL NULL NULL 2 +1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY it2 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +DROP TABLE IF EXISTS ot1, ot4, it2, it3; +# +# Bug#729039: NULL keys used to evaluate subquery +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (NULL), (1), (NULL), (2); +CREATE TABLE t2 (a int, INDEX idx(a)) ; +INSERT INTO t2 VALUES (NULL), (1), (NULL); +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX () WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX() WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ref idx idx 5 test.t1.a 2 Using index +DROP TABLE t1,t2; +# +# BUG#752992: Wrong results for a subquery with 'semijoin=on' +# +CREATE TABLE t1 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t1 VALUES (11,0); +INSERT INTO t1 VALUES (12,5); +INSERT INTO t1 VALUES (15,0); +CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t2 VALUES (11,1); +INSERT INTO t2 VALUES (12,2); +INSERT INTO t2 VALUES (15,4); +EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index +2 DEPENDENT SUBQUERY it eq_ref PRIMARY PRIMARY 4 func 1 Using index +SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +pk i +11 0 +12 5 +15 0 +DROP table t1,t2; +# +# Bug#751350: crash with pushed condition for outer references when +# there should be none of such conditions +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (0,0),(0,0); +EXPLAIN +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +b +0 +DROP TABLE t1; +# +# Bug #11765713 58705: +# OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES +# CREATED BY OPT_SUM_QUERY +# +CREATE TABLE t1(a INT NOT NULL, KEY (a)); +INSERT INTO t1 VALUES (0), (1); +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1) +); +ERROR 21000: Subquery returns more than 1 row +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1 where a is null) +); +foo +DROP TABLE t1; +set optimizer_switch=default; diff --git a/mysql-test/r/subselect_no_semijoin.result b/mysql-test/r/subselect_no_semijoin.result new file mode 100644 index 00000000000..8c00fe67448 --- /dev/null +++ b/mysql-test/r/subselect_no_semijoin.result @@ -0,0 +1,5111 @@ +set optimizer_switch='semijoin=off'; +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12; +drop view if exists v2; +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; +select (select 2); +(select 2) +2 +explain extended select (select 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select 2 AS `(select 2)` +SELECT (SELECT 1) UNION SELECT (SELECT 2); +(SELECT 1) +1 +2 +explain extended SELECT (SELECT 1) UNION SELECT (SELECT 2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1249 Select 4 was reduced during optimization +Note 1003 select 1 AS `(SELECT 1)` union select 2 AS `(SELECT 2)` +SELECT (SELECT (SELECT 0 UNION SELECT 0)); +(SELECT (SELECT 0 UNION SELECT 0)) +0 +explain extended SELECT (SELECT (SELECT 0 UNION SELECT 0)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +4 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select (select 0 union select 0) AS `(SELECT (SELECT 0 UNION SELECT 0))` +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING a=1) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +SELECT (SELECT 1 FROM (SELECT 1) as b HAVING b=1) as a,(SELECT 1 FROM (SELECT 1) as c HAVING a=1) as b; +ERROR 42S22: Reference 'b' not supported (forward reference in item list) +SELECT (SELECT 1),MAX(1) FROM (SELECT 1) as a; +(SELECT 1) MAX(1) +1 1 +SELECT (SELECT a) as a; +ERROR 42S22: Reference 'a' not supported (forward reference in item list) +EXPLAIN EXTENDED SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having (<expr_cache><'1'>((select '1')) = 1) +SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1; +1 +1 +SELECT (SELECT 1), a; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT 1 as a FROM (SELECT 1) as b HAVING (SELECT a)=1; +a +1 +SELECT 1 FROM (SELECT (SELECT a) b) c; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT * FROM (SELECT 1 as id) b WHERE id IN (SELECT * FROM (SELECT 1 as id) c ORDER BY id); +id +1 +SELECT * FROM (SELECT 1) a WHERE 1 IN (SELECT 1,1); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 IN (SELECT 1); +1 IN (SELECT 1) +1 +SELECT 1 FROM (SELECT 1 as a) b WHERE 1 IN (SELECT (SELECT a)); +1 +1 +select (SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE(1)); +ERROR HY000: Incorrect usage of PROCEDURE and subquery +SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE((SELECT 1)); +ERROR HY000: Incorrect parameters to procedure 'ANALYSE' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1) as a FROM (SELECT 1) b WHERE (SELECT a) IS NOT NULL; +ERROR 42S22: Unknown column 'a' in 'field list' +SELECT (SELECT 1,2,3) = ROW(1,2,3); +(SELECT 1,2,3) = ROW(1,2,3) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,1); +(SELECT 1,2,3) = ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) < ROW(1,2,1); +(SELECT 1,2,3) < ROW(1,2,1) +0 +SELECT (SELECT 1,2,3) > ROW(1,2,1); +(SELECT 1,2,3) > ROW(1,2,1) +1 +SELECT (SELECT 1,2,3) = ROW(1,2,NULL); +(SELECT 1,2,3) = ROW(1,2,NULL) +NULL +SELECT ROW(1,2,3) = (SELECT 1,2,3); +ROW(1,2,3) = (SELECT 1,2,3) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,1); +ROW(1,2,3) = (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) < (SELECT 1,2,1); +ROW(1,2,3) < (SELECT 1,2,1) +0 +SELECT ROW(1,2,3) > (SELECT 1,2,1); +ROW(1,2,3) > (SELECT 1,2,1) +1 +SELECT ROW(1,2,3) = (SELECT 1,2,NULL); +ROW(1,2,3) = (SELECT 1,2,NULL) +NULL +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'a'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'a') +1 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,2,'b'); +(SELECT 1.5,2,'a') = ROW(1.5,2,'b') +0 +SELECT (SELECT 1.5,2,'a') = ROW('1.5b',2,'b'); +(SELECT 1.5,2,'a') = ROW('1.5b',2,'b') +0 +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: '1.5b' +SELECT (SELECT 'b',2,'a') = ROW(1.5,2,'a'); +(SELECT 'b',2,'a') = ROW(1.5,2,'a') +0 +SELECT (SELECT 1.5,2,'a') = ROW(1.5,'2','a'); +(SELECT 1.5,2,'a') = ROW(1.5,'2','a') +1 +SELECT (SELECT 1.5,'c','a') = ROW(1.5,2,'a'); +(SELECT 1.5,'c','a') = ROW(1.5,2,'a') +0 +SELECT (SELECT * FROM (SELECT 'test' a,'test' b) a); +ERROR 21000: Operand should contain 1 column(s) +SELECT 1 as a,(SELECT a+a) b,(SELECT b); +a b (SELECT b) +1 2 2 +create table t1 (a int); +create table t2 (a int, b int); +create table t3 (a int); +create table t4 (a int not null, b int not null); +insert into t1 values (2); +insert into t2 values (1,7),(2,7); +insert into t4 values (4,8),(3,8),(5,9); +select (select a from t1 where t1.a = a1) as a2, (select b from t2 where t2.b=a2) as a1; +ERROR 42S22: Reference 'a1' not supported (forward reference in item list) +select (select a from t1 where t1.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a) a +NULL 1 +2 2 +select (select a from t1 where t1.a=t2.b), a from t2; +(select a from t1 where t1.a=t2.b) a +NULL 1 +NULL 2 +select (select a from t1), a, (select 1 union select 2 limit 1) from t2; +(select a from t1) a (select 1 union select 2 limit 1) +2 1 1 +2 2 1 +select (select a from t3), a from t2; +(select a from t3) a +NULL 1 +NULL 2 +select * from t2 where t2.a=(select a from t1); +a b +2 7 +insert into t3 values (6),(7),(3); +select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1); +a b +1 7 +2 7 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 order by a limit 2) limit 3; +a b +1 7 +2 7 +3 8 +(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +a b +1 7 +2 7 +4 8 +3 8 +explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using filesort +3 UNION t4 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = (select `test`.`t3`.`a` from `test`.`t3` order by 1 desc limit 1))) union (select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t4` where (`test`.`t4`.`b` = (select (max(`test`.`t2`.`a`) * 4) from `test`.`t2`)) order by `a`) +select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2; +(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a +3 1 +7 2 +select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +(select t3.a from t3 where a<8 order by 1 desc limit 1) a +7 2 +explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from +(select * from t2 where a>1) as tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> system NULL NULL NULL NULL 1 100.00 +3 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort +Warnings: +Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,'2' AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1); +a +2 +select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); +a +select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) +8 7.5000 +8 4.5000 +9 7.5000 +explain extended select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t4.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t4`.`b` AS `b`,(select avg((`test`.`t2`.`a` + (select min(`test`.`t3`.`a`) from `test`.`t3` where (`test`.`t3`.`a` >= `test`.`t4`.`a`)))) from `test`.`t2`) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from `test`.`t4` +select * from t3 where exists (select * from t2 where t2.b=t3.a); +a +7 +select * from t3 where not exists (select * from t2 where t2.b=t3.a); +a +6 +3 +select * from t3 where a in (select b from t2); +a +7 +select * from t3 where a not in (select b from t2); +a +6 +3 +select * from t3 where a = some (select b from t2); +a +7 +select * from t3 where a <> any (select b from t2); +a +6 +3 +select * from t3 where a = all (select b from t2); +a +7 +select * from t3 where a <> all (select b from t2); +a +6 +3 +insert into t2 values (100, 5); +select * from t3 where a < any (select b from t2); +a +6 +3 +select * from t3 where a < all (select b from t2); +a +3 +select * from t3 where a >= any (select b from t2); +a +6 +7 +explain extended select * from t3 where a >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2); +a +7 +delete from t2 where a=100; +select * from t3 where a in (select a,b from t2); +ERROR 21000: Operand should contain 1 column(s) +select * from t3 where a in (select * from t2); +ERROR 21000: Operand should contain 1 column(s) +insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9),(1,10); +select b,max(a) as ma from t4 group by b having b < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +insert into t2 values (2,10); +select b,max(a) as ma from t4 group by b having ma < (select max(t2.a) from t2 where t2.b=t4.b); +b ma +10 1 +delete from t2 where a=2 and b=10; +select b,max(a) as ma from t4 group by b having b >= (select max(t2.a) from t2 where t2.b=t4.b); +b ma +7 12 +create table t5 (a int); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (5); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +insert into t5 values (2); +select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a +NULL 1 +2 2 +explain extended select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 100.00 Using where +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 +Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 select <expr_cache><`test`.`t2`.`a`>((select '2' from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`))) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2` +select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2; +ERROR 21000: Subquery returns more than 1 row +create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq)); +create table t7( uq int primary key, name char(25)); +insert into t7 values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta"); +insert into t6 values (1,1),(1,2),(2,2),(1,3); +select * from t6 where exists (select * from t7 where uq = clinic_uq); +patient_uq clinic_uq +1 1 +1 2 +2 2 +explain extended select * from t6 where exists (select * from t7 where uq = clinic_uq); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t6 ALL NULL NULL NULL NULL 4 100.00 Using where +2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 100.00 Using index +Warnings: +Note 1276 Field or reference 'test.t6.clinic_uq' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where <expr_cache><`test`.`t6`.`clinic_uq`>(exists(select 1 from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`))) +select * from t1 where a= (select a from t2,t4 where t2.b=t4.b); +ERROR 23000: Column 'a' in field list is ambiguous +drop table t1,t2,t3; +CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0'); +INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b'); +CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0'); +INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2'); +CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00'); +INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13'); +SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1); +a b +W 1732-02-22 +SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2); +a b +W 1 +SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3); +a b +W a +CREATE TABLE `t8` ( +`pseudo` varchar(35) character set latin1 NOT NULL default '', +`email` varchar(60) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`), +UNIQUE KEY `email` (`email`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +INSERT INTO t8 (pseudo,email) VALUES ('joce','test'); +INSERT INTO t8 (pseudo,email) VALUES ('joce1','test1'); +INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1'); +EXPLAIN EXTENDED SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t8 const PRIMARY PRIMARY 37 const 1 100.00 Using index +4 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +2 SUBQUERY t8 const PRIMARY PRIMARY 37 const 1 100.00 +3 SUBQUERY t8 const PRIMARY PRIMARY 37 1 100.00 Using index +Warnings: +Note 1003 select 'joce' AS `pseudo`,(select 'test' from `test`.`t8` where 1) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from `test`.`t8` where 1 +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM +t8 WHERE pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT * FROM t8 WHERE +pseudo='joce'); +ERROR 21000: Operand should contain 1 column(s) +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'); +pseudo +joce +SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo LIKE '%joce%'); +ERROR 21000: Subquery returns more than 1 row +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8; +CREATE TABLE `t1` ( +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (topic,date,pseudo) VALUES +('43506','2002-10-02','joce'),('40143','2002-08-03','joce'); +EXPLAIN EXTENDED SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03') +EXPLAIN EXTENDED SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 SUBQUERY t1 index NULL PRIMARY 43 NULL 2 100.00 Using where; Using index +Warnings: +Note 1003 select (select distinct `test`.`t1`.`date` from `test`.`t1` where (`test`.`t1`.`date` = '2002-08-03')) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')` +SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'; +date +2002-08-03 +SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03'); +(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03') +2002-08-03 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1; +1 +1 +1 +1 +SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1; +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL topic 3 NULL 2 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (40143,1),(43506,2); +CREATE TABLE `t2` ( +`mot` varchar(30) NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`) +) ENGINE=MyISAM ROW_FORMAT=DYNAMIC; +INSERT INTO t2 (mot,topic,date,pseudo) VALUES ('joce','40143','2002-10-22','joce'), ('joce','43506','2002-10-22','joce'); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +a +40143 +SELECT numeropost,maxnumrep FROM t1 WHERE exists (SELECT 1 FROM t2 WHERE (mot='joce') AND date >= '2002-10-21' AND t1.numeropost = t2.topic) ORDER BY maxnumrep DESC LIMIT 0, 20; +numeropost maxnumrep +43506 2 +40143 1 +SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) b; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT 1 IN (SELECT 1 FROM t2 HAVING a); +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic); +mot topic date pseudo +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 1 +SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2); +mot topic date pseudo +SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2); +mot topic date pseudo +joce 40143 2002-10-22 joce +joce 43506 2002-10-22 joce +SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000); +mot topic date pseudo +joce 40143 2002-10-22 joce +SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2; +mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) +joce 40143 2002-10-22 joce 1 +joce 43506 2002-10-22 joce 0 +drop table t1,t2; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM ROW_FORMAT=FIXED; +INSERT INTO t1 (numeropost,maxnumrep) VALUES (1,0),(2,1); +select numeropost as a FROM t1 GROUP BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +select numeropost as a FROM t1 ORDER BY (SELECT 1 FROM t1 HAVING a=1); +ERROR 21000: Subquery returns more than 1 row +show warnings; +Level Code Message +Error 1242 Subquery returns more than 1 row +Error 1028 Sort aborted +drop table t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +(select * from t1) union (select * from t1) order by (select a from t1 limit 1); +a +1 +2 +3 +drop table t1; +CREATE TABLE t1 (field char(1) NOT NULL DEFAULT 'b'); +INSERT INTO t1 VALUES (); +SELECT field FROM t1 WHERE 1=(SELECT 1 UNION ALL SELECT 1 FROM (SELECT 1) a HAVING field='b'); +ERROR 21000: Subquery returns more than 1 row +drop table t1; +CREATE TABLE `t1` ( +`numeropost` mediumint(8) unsigned NOT NULL default '0', +`numreponse` int(10) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +PRIMARY KEY (`numeropost`,`numreponse`), +UNIQUE KEY `numreponse` (`numreponse`), +KEY `pseudo` (`pseudo`,`numeropost`) +) ENGINE=MyISAM; +SELECT (SELECT numeropost FROM t1 HAVING numreponse=a),numreponse FROM (SELECT * FROM t1) as a; +ERROR 42S22: Reference 'numreponse' not supported (forward reference in item list) +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=a) FROM (SELECT * FROM t1) as a; +ERROR 42S22: Unknown column 'a' in 'having clause' +SELECT numreponse, (SELECT numeropost FROM t1 HAVING numreponse=1) FROM (SELECT * FROM t1) as a; +numreponse (SELECT numeropost FROM t1 HAVING numreponse=1) +INSERT INTO t1 (numeropost,numreponse,pseudo) VALUES (1,1,'joce'),(1,2,'joce'),(1,3,'test'); +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1 FROM t1 WHERE numeropost='1'); +ERROR 21000: Subquery returns more than 1 row +EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1') +EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select '3' AS `numreponse` from `test`.`t1` where (('1' = '1')) +drop table t1; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1); +SELECT 1 FROM (SELECT a FROM t1) b HAVING (SELECT b.a)=1; +1 +1 +drop table t1; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 22),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +update t1 set b= (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +update t1 set b= (select b from t2); +ERROR 21000: Subquery returns more than 1 row +update t1 set b= (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 NULL +1 21 +2 22 +drop table t1, t2; +create table t1 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t1 values (0, 10),(1, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t1; +a b +0 10 +1 11 +2 12 +select * from t1 where b = (select b from t2 where t1.a = t2.a); +a b +2 12 +delete from t1 where b = (select b from t1); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +delete from t1 where b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete from t1 where b = (select b from t2 where t1.a = t2.a); +select * from t1; +a b +0 10 +1 11 +drop table t1, t2; +create table t11 (a int NOT NULL, b int, primary key (a)); +create table t12 (a int NOT NULL, b int, primary key (a)); +create table t2 (a int NOT NULL, b int, primary key (a)); +insert into t11 values (0, 10),(1, 11),(2, 12); +insert into t12 values (33, 10),(22, 11),(2, 12); +insert into t2 values (1, 21),(2, 12),(3, 23); +select * from t11; +a b +0 10 +1 11 +2 12 +select * from t12; +a b +33 10 +22 11 +2 12 +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t12 where t11.a = t12.a); +ERROR HY000: You can't specify target table 't12' for update in FROM clause +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2); +ERROR 21000: Subquery returns more than 1 row +delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b = (select b from t2 where t11.a = t2.a); +select * from t11; +a b +0 10 +1 11 +select * from t12; +a b +33 10 +22 11 +drop table t11, t12, t2; +CREATE TABLE t1 (x int) ENGINE=MyISAM; +create table t2 (a int) ENGINE=MyISAM; +create table t3 (b int); +insert into t2 values (1); +insert into t3 values (1),(2); +INSERT INTO t1 (x) VALUES ((SELECT x FROM t1)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +INSERT INTO t1 (x) VALUES ((SELECT b FROM t3)); +ERROR 21000: Subquery returns more than 1 row +INSERT INTO t1 (x) VALUES ((SELECT a FROM t2)); +select * from t1; +x +1 +insert into t2 values (1); +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2; +select * from t1; +x +1 +2 +3 +3 +INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2; +select * from t1; +x +1 +2 +3 +3 +11 +11 +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2)); +ERROR 42S22: Unknown column 'x' in 'field list' +INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2)); +select * from t1; +x +1 +2 +3 +3 +11 +11 +2 +drop table t1, t2, t3; +CREATE TABLE t1 (x int not null, y int, primary key (x)) ENGINE=MyISAM; +create table t2 (a int); +create table t3 (a int); +insert into t2 values (1); +insert into t3 values (1),(2); +select * from t1; +x y +replace into t1 (x, y) VALUES ((SELECT x FROM t1), (SELECT a+1 FROM t2)); +ERROR HY000: You can't specify target table 't1' for update in FROM clause +replace into t1 (x, y) VALUES ((SELECT a FROM t3), (SELECT a+1 FROM t2)); +ERROR 21000: Subquery returns more than 1 row +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 2 +replace into t1 (x, y) VALUES ((SELECT a FROM t2), (SELECT a+2 FROM t2)); +select * from t1; +x y +1 3 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 1 +replace DELAYED into t1 (x, y) VALUES ((SELECT a+3 FROM t2), (SELECT a+1 FROM t2)); +select * from t1; +x y +1 3 +4 2 +replace LOW_PRIORITY into t1 (x, y) VALUES ((SELECT a+1 FROM t2), (SELECT a FROM t2)); +select * from t1; +x y +1 3 +4 2 +2 1 +drop table t1, t2, t3; +SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *); +ERROR HY000: No tables used +CREATE TABLE t2 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (1),(2); +SELECT * FROM t2 WHERE id IN (SELECT 1); +id +1 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1) +SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id +1 +SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id +2 +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ref id id 5 const 1 100.00 Using index +Warnings: +Note 1249 Select 3 was reduced during optimization +Note 1249 Select 2 was reduced during optimization +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = (1 + 1)) +EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3))))) +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3); +id +SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2); +id +2 +INSERT INTO t2 VALUES ((SELECT * FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +INSERT INTO t2 VALUES ((SELECT id FROM t2)); +ERROR HY000: You can't specify target table 't2' for update in FROM clause +SELECT * FROM t2; +id +1 +2 +CREATE TABLE t1 (id int(11) default NULL, KEY id (id)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 values (1),(1); +UPDATE t2 SET id=(SELECT * FROM t1); +ERROR 21000: Subquery returns more than 1 row +drop table t2, t1; +create table t1 (a int); +insert into t1 values (1),(2),(3); +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2; +select 1 IN (SELECT * from t1); +1 IN (SELECT * from t1) +1 +select 3 IN (SELECT * from t1); +3 IN (SELECT * from t1) +1 +select 10 IN (SELECT * from t1); +10 IN (SELECT * from t1) +NULL +select 1 > ALL (SELECT * from t1); +1 > ALL (SELECT * from t1) +0 +select 10 > ALL (SELECT * from t1); +10 > ALL (SELECT * from t1) +NULL +select 1 > ANY (SELECT * from t1); +1 > ANY (SELECT * from t1) +NULL +select 10 > ANY (SELECT * from t1); +10 > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a varchar(20)); +insert into t1 values ('A'),('BC'),('DEF'); +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a='BC'; +select 'A' IN (SELECT * from t1); +'A' IN (SELECT * from t1) +1 +select 'DEF' IN (SELECT * from t1); +'DEF' IN (SELECT * from t1) +1 +select 'XYZS' IN (SELECT * from t1); +'XYZS' IN (SELECT * from t1) +NULL +select 'A' > ALL (SELECT * from t1); +'A' > ALL (SELECT * from t1) +0 +select 'XYZS' > ALL (SELECT * from t1); +'XYZS' > ALL (SELECT * from t1) +NULL +select 'A' > ANY (SELECT * from t1); +'A' > ANY (SELECT * from t1) +NULL +select 'XYZS' > ANY (SELECT * from t1); +'XYZS' > ANY (SELECT * from t1) +1 +drop table t1; +create table t1 (a float); +insert into t1 values (1.5),(2.5),(3.5); +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +0 +select NULL IN (SELECT * from t1); +NULL IN (SELECT * from t1) +NULL +update t1 set a=NULL where a=2.5; +select 1.5 IN (SELECT * from t1); +1.5 IN (SELECT * from t1) +1 +select 3.5 IN (SELECT * from t1); +3.5 IN (SELECT * from t1) +1 +select 10.5 IN (SELECT * from t1); +10.5 IN (SELECT * from t1) +NULL +select 1.5 > ALL (SELECT * from t1); +1.5 > ALL (SELECT * from t1) +0 +select 10.5 > ALL (SELECT * from t1); +10.5 > ALL (SELECT * from t1) +NULL +select 1.5 > ANY (SELECT * from t1); +1.5 > ANY (SELECT * from t1) +NULL +select 10.5 > ANY (SELECT * from t1); +10.5 > ANY (SELECT * from t1) +1 +explain extended select (select a+1) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1249 Select 2 was reduced during optimization +Note 1003 select (`test`.`t1`.`a` + 1) AS `(select a+1)` from `test`.`t1` +select (select a+1) from t1; +(select a+1) +2.5 +NULL +4.5 +drop table t1; +CREATE TABLE t1 (a int(11) NOT NULL default '0', PRIMARY KEY (a)); +CREATE TABLE t2 (a int(11) default '0', INDEX (a)); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +a t1.a in (select t2.a from t2) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1` +CREATE TABLE t3 (a int(11) default '0'); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +a t1.a in (select t2.a from t2,t3 where t3.a=t2.a) +1 1 +2 1 +3 1 +4 0 +explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1` +drop table t1,t2,t3; +create table t1 (a float); +select 10.5 IN (SELECT * from t1 LIMIT 1); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +select 10.5 IN (SELECT * from t1 LIMIT 1 UNION SELECT 1.5); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int, b int, c varchar(10)); +create table t2 (a int); +insert into t1 values (1,2,'a'),(2,3,'b'),(3,4,'c'); +insert into t2 values (1),(2),(NULL); +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a') (select c from t1 where a=t2.a) +1 1 a +2 0 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,3,'b') (select c from t1 where a=t2.a) +1 0 a +2 1 b +NULL NULL NULL +select a, (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c'),(select c from t1 where a=t2.a) from t2; +a (select a,b,c from t1 where t1.a=t2.a) = ROW(a,4,'c') (select c from t1 where a=t2.a) +1 0 a +2 0 b +NULL NULL NULL +drop table t1,t2; +create table t1 (a int, b real, c varchar(10)); +insert into t1 values (1, 1, 'a'), (2,2,'b'), (NULL, 2, 'b'); +select ROW(1, 1, 'a') IN (select a,b,c from t1); +ROW(1, 1, 'a') IN (select a,b,c from t1) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1); +ROW(1, 2, 'a') IN (select a,b,c from t1) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1); +ROW(1, 1, 'a') IN (select b,a,c from t1) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select a,b,c from t1 where a is not null) +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null); +ROW(1, 2, 'a') IN (select a,b,c from t1 where a is not null) +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null); +ROW(1, 1, 'a') IN (select b,a,c from t1 where a is not null) +1 +select ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select a,b,c from t1 where c='b' or c='a') +1 +select ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a'); +ROW(1, 2, 'a') IN (select a,b,c from t1 where c='b' or c='a') +0 +select ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a'); +ROW(1, 1, 'a') IN (select b,a,c from t1 where c='b' or c='a') +1 +select ROW(1, 1, 'a') IN (select b,a,c from t1 limit 2); +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +drop table t1; +create table t1 (a int); +insert into t1 values (1); +do @a:=(SELECT a from t1); +select @a; +@a +1 +set @a:=2; +set @a:=(SELECT a from t1); +select @a; +@a +1 +drop table t1; +do (SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +set @a:=(SELECT a from t1); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 (a int, KEY(a)); +HANDLER t1 OPEN; +HANDLER t1 READ a=((SELECT 1)); +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1))' at line 1 +HANDLER t1 CLOSE; +drop table t1; +create table t1 (a int); +create table t2 (b int); +insert into t1 values (1),(2); +insert into t2 values (1); +select a from t1 where a in (select a from t1 where a in (select b from t2)); +a +1 +drop table t1, t2; +create table t1 (a int, b int); +create table t2 like t1; +insert into t1 values (1,2),(1,3),(1,4),(1,5); +insert into t2 values (1,2),(1,3); +select * from t1 where row(a,b) in (select a,b from t2); +a b +1 2 +1 3 +drop table t1, t2; +CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +select * from t1; +i +2 +drop table t1; +CREATE TABLE t1 (a int(1)); +EXPLAIN EXTENDED SELECT (SELECT RAND() FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select rand() from `test`.`t1`) AS `(SELECT RAND() FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select encrypt('test') from `test`.`t1`) AS `(SELECT ENCRYPT('test') FROM t1)` from `test`.`t1` +EXPLAIN EXTENDED SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select (select benchmark(1,1) from `test`.`t1`) AS `(SELECT BENCHMARK(1,1) FROM t1)` from `test`.`t1` +drop table t1; +CREATE TABLE `t1` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t2` ( +`mot` varchar(30) character set latin1 NOT NULL default '', +`topic` mediumint(8) unsigned NOT NULL default '0', +`date` date NOT NULL default '0000-00-00', +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`), +KEY `pseudo` (`pseudo`,`date`,`topic`), +KEY `topic` (`topic`) +) ENGINE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC; +CREATE TABLE `t3` ( +`numeropost` mediumint(8) unsigned NOT NULL auto_increment, +`maxnumrep` int(10) unsigned NOT NULL default '0', +PRIMARY KEY (`numeropost`), +UNIQUE KEY `maxnumrep` (`maxnumrep`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test'); +Warnings: +Warning 1265 Data truncated for column 'date' at row 1 +Warning 1265 Data truncated for column 'date' at row 2 +INSERT INTO t3 VALUES (1,1); +SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE +numeropost=topic); +topic +2 +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +test 2 0000-00-00 test +DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT +EXISTS(SELECT * FROM t3 WHERE numeropost=topic)); +select * from t1; +mot topic date pseudo +joce 1 0000-00-00 joce +drop table t1, t2, t3; +SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +a (SELECT a) +1 1 +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT 1)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT 1)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a)` int(1) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT * FROM (SELECT 1 as a,(SELECT a+0)) a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(1) NOT NULL DEFAULT '0', + `(SELECT a+0)` int(3) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +CREATE TABLE t1 SELECT (SELECT 1 as a UNION SELECT 1+1 limit 1,1) as a; +select * from t1; +a +2 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` bigint(20) NOT NULL DEFAULT '0' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (a int); +insert into t1 values (1), (2), (3); +explain extended select a,(select (select rand() from t1 limit 1) from t1 limit 1) +from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,(select (select rand() from `test`.`t1` limit 1) from `test`.`t1` limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from `test`.`t1` +drop table t1; +select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent); +ERROR 42S02: Table 'test.t1' doesn't exist +CREATE TABLE t1 ( +ID int(11) NOT NULL auto_increment, +name char(35) NOT NULL default '', +t2 char(3) NOT NULL default '', +District char(20) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (130,'Sydney','AUS','New South Wales',3276207); +INSERT INTO t1 VALUES (131,'Melbourne','AUS','Victoria',2865329); +INSERT INTO t1 VALUES (132,'Brisbane','AUS','Queensland',1291117); +CREATE TABLE t2 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '', +PRIMARY KEY (Code) +) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('AUS','Australia','Oceania','Australia and New Zealand',7741220.00,1901,18886000,79.8,351182.00,392911.00,'Australia','Constitutional Monarchy, Federation','Elisabeth II',135,'AU'); +INSERT INTO t2 VALUES ('AZE','Azerbaijan','Asia','Middle East',86600.00,1991,7734000,62.9,4127.00,4100.00,'Azärbaycan','Federal Republic','Heydär Äliyev',144,'AZ'); +select t2.Continent, t1.Name, t1.Population from t2 LEFT JOIN t1 ON t2.Code = t1.t2 where t1.Population IN (select max(t1.Population) AS Population from t1, t2 where t1.t2 = t2.Code group by Continent); +Continent Name Population +Oceania Sydney 3276207 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) character set latin1 NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (pseudo) VALUES ('test'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +INSERT INTO t1 (pseudo) VALUES ('test1'); +SELECT 0 IN (SELECT 1 FROM t1 a); +0 IN (SELECT 1 FROM t1 a) +0 +EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select <in_optimizer>(0,<exists>(select 1 from `test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)` +drop table t1; +CREATE TABLE `t1` ( +`i` int(11) NOT NULL default '0', +PRIMARY KEY (`i`) +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1); +UPDATE t1 SET i=i+(SELECT MAX(i) FROM (SELECT 1) t) WHERE i=(SELECT MAX(i)); +UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); +UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t); +ERROR 42S22: Unknown column 't.i' in 'field list' +select * from t1; +i +3 +drop table t1; +CREATE TABLE t1 ( +id int(11) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(1),(2),(2),(1),(3); +CREATE TABLE t2 ( +id int(11) default NULL, +name varchar(15) default NULL +) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (4,'vita'), (1,'vita'), (2,'vita'), (1,'vita'); +update t1, t2 set t2.name='lenka' where t2.id in (select id from t1); +select * from t2; +id name +4 vita +1 lenka +2 lenka +1 lenka +drop table t1,t2; +create table t1 (a int, unique index indexa (a)); +insert into t1 values (-1), (-4), (-2), (NULL); +select -10 IN (select a from t1 FORCE INDEX (indexa)); +-10 IN (select a from t1 FORCE INDEX (indexa)) +NULL +drop table t1; +create table t1 (id int not null auto_increment primary key, salary int, key(salary)); +insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000); +explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using index condition +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`)) +drop table t1; +CREATE TABLE t1 ( +ID int(10) unsigned NOT NULL auto_increment, +SUB_ID int(3) unsigned NOT NULL default '0', +REF_ID int(10) unsigned default NULL, +REF_SUB int(3) unsigned default '0', +PRIMARY KEY (ID,SUB_ID), +UNIQUE KEY t1_PK (ID,SUB_ID), +KEY t1_FK (REF_ID,REF_SUB), +KEY t1_REFID (REF_ID) +) ENGINE=MyISAM CHARSET=cp1251; +INSERT INTO t1 VALUES (1,0,NULL,NULL),(2,0,NULL,NULL); +SELECT DISTINCT REF_ID FROM t1 WHERE ID= (SELECT DISTINCT REF_ID FROM t1 WHERE ID=2); +REF_ID +DROP TABLE t1; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,0), (2,0), (3,0); +insert into t2 values (1,1), (2,1), (3,1), (2,2); +update ignore t1 set b=(select b from t2 where t1.a=t2.a); +Warnings: +Error 1242 Subquery returns more than 1 row +select * from t1; +a b +1 1 +2 NULL +3 1 +drop table t1, t2; +CREATE TABLE `t1` ( +`id` mediumint(8) unsigned NOT NULL auto_increment, +`pseudo` varchar(35) NOT NULL default '', +`email` varchar(60) NOT NULL default '', +PRIMARY KEY (`id`), +UNIQUE KEY `email` (`email`), +UNIQUE KEY `pseudo` (`pseudo`) +) ENGINE=MyISAM CHARSET=latin1 PACK_KEYS=1 ROW_FORMAT=DYNAMIC; +INSERT INTO t1 (id,pseudo,email) VALUES (1,'test','test'),(2,'test1','test1'); +SELECT pseudo as a, pseudo as b FROM t1 GROUP BY (SELECT a) ORDER BY (SELECT id*1); +a b +test test +test1 test1 +drop table if exists t1; +(SELECT 1 as a) UNION (SELECT 1) ORDER BY (SELECT a+0); +a +1 +create table t1 (a int not null, b int, primary key (a)); +create table t2 (a int not null, primary key (a)); +create table t3 (a int not null, b int, primary key (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 SUBQUERY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` where (`test`.`t1`.`b` <> 30) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index +2 SUBQUERY t3 index PRIMARY PRIMARY 4 NULL 3 100.00 Using index +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where (`test`.`t1`.`b` = `test`.`t3`.`a`) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +drop table t1, t2, t3; +create table t1 (a int, b int, index a (a,b)); +create table t2 (a int, index a (a)); +create table t3 (a int, b int, index a (a)); +insert into t1 values (1,10), (2,20), (3,30), (4,40); +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 +select rand()*100000+200,rand()*100000 from t0 A, t0 B, t0 C, t0 D; +insert into t2 values (2), (3), (4), (5); +insert into t3 values (10,3), (20,4), (30,5); +select * from t2 where t2.a in (select a from t1); +a +2 +3 +4 +explain extended select * from t2 where t2.a in (select a from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 SUBQUERY t1 index NULL a 10 NULL 10004 100.00 Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 SUBQUERY t1 index NULL a 10 NULL 10004 100.00 Using where; Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` where (`test`.`t1`.`b` <> 30) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +a +2 +3 +explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 SUBQUERY t3 index a a 5 NULL 3 100.00 Using index +2 SUBQUERY t1 index NULL a 10 NULL 10004 100.00 Using where; Using index; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where (`test`.`t1`.`b` = `test`.`t3`.`a`) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +insert into t1 values (3,31); +select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +a +2 +3 +4 +select * from t2 where t2.a in (select a from t1 where t1.b <> 30 and t1.b <> 31); +a +2 +4 +explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index +2 SUBQUERY t1 index NULL a 10 NULL 10005 100.00 Using where; Using index +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` where (`test`.`t1`.`b` <> 30) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `materialized subselect`.`a`)))))) +drop table t0, t1, t2, t3; +create table t1 (a int, b int); +create table t2 (a int, b int); +create table t3 (a int, b int); +insert into t1 values (0,100),(1,2), (1,3), (2,2), (2,7), (2,-1), (3,10); +insert into t2 values (0,0), (1,1), (2,1), (3,1), (4,1); +insert into t3 values (3,3), (2,2), (1,1); +select a,(select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) from t3; +a (select count(distinct t1.b) as sum from t1,t2 where t1.a=t2.a and t2.b > 0 and t1.a <= t3.b group by t1.a order by sum limit 1) +3 1 +2 2 +1 2 +drop table t1,t2,t3; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +select * from t1 where exists (select s1 from t2 having max(t2.s1)=t1.s1); +s1 +1 +drop table t1,t2; +create table t1 (s1 int); +create table t2 (s1 int); +insert into t1 values (1); +insert into t2 values (1); +update t1 set s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A); +ERROR 42S22: Unknown column 'x.s1' in 'field list' +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 CHAR(5) COLLATE latin1_german1_ci, +s2 CHAR(5) COLLATE latin1_swedish_ci); +INSERT INTO t1 VALUES ('z','?'); +select * from t1 where s1 > (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +select * from t1 where s1 > any (select max(s2) from t1); +ERROR HY000: Illegal mix of collations (latin1_german1_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '>' +drop table t1; +create table t1(toid int,rd int); +create table t2(userid int,pmnew int,pmtotal int); +insert into t2 values(1,0,0),(2,0,0); +insert into t1 values(1,0),(1,0),(1,0),(1,12),(1,15),(1,123),(1,12312),(1,12312),(1,123),(2,0),(2,0),(2,1),(2,2); +select userid,pmtotal,pmnew, (select count(rd) from t1 where toid=t2.userid) calc_total, (select count(rd) from t1 where rd=0 and toid=t2.userid) calc_new from t2 where userid in (select distinct toid from t1); +userid pmtotal pmnew calc_total calc_new +1 0 0 9 3 +2 0 0 4 2 +drop table t1, t2; +create table t1 (s1 char(5)); +select (select 'a','b' from t1 union select 'a','b' from t1) from t1; +ERROR 21000: Operand should contain 1 column(s) +insert into t1 values ('tttt'); +select * from t1 where ('a','b')=(select 'a','b' from t1 union select 'a','b' from t1); +s1 +tttt +explain extended (select * from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 (select 'tttt' AS `s1` from `test`.`t1`) +(select * from t1); +s1 +tttt +drop table t1; +create table t1 (s1 char(5), index s1(s1)); +create table t2 (s1 char(5), index s1(s1)); +insert into t1 values ('a1'),('a2'),('a3'); +insert into t2 values ('a1'),('a2'); +select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +s1 s1 NOT IN (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +s1 s1 = ANY (SELECT s1 FROM t2) +a1 1 +a2 1 +a3 0 +select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +s1 s1 <> ALL (SELECT s1 FROM t2) +a1 0 +a2 0 +a3 1 +select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +s1 s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') +a1 0 +a2 1 +a3 1 +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1` +explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index +2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 100.00 Using index; Using where; Full scan on NULL key +Warnings: +Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < 'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1` +drop table t1,t2; +create table t2 (a int, b int); +create table t3 (a int); +insert into t3 values (6),(7),(3); +select * from t3 where a >= all (select b from t2); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(NULL) from `test`.`t2`))) +select * from t3 where a >= some (select b from t2); +a +explain extended select * from t3 where a >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= (select min(NULL) from `test`.`t2`))) +select * from t3 where a >= all (select b from t2 group by 1); +a +6 +7 +3 +explain extended select * from t3 where a >= all (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < <max>(select NULL from `test`.`t2` group by 1))) +select * from t3 where a >= some (select b from t2 group by 1); +a +explain extended select * from t3 where a >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <nop>((`test`.`t3`.`a` >= <min>(select NULL from `test`.`t2` group by 1))) +select * from t3 where NULL >= any (select b from t2); +a +explain extended select * from t3 where NULL >= any (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= any (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= any (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2); +a +explain extended select * from t3 where NULL >= some (select b from t2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +select * from t3 where NULL >= some (select b from t2 group by 1); +a +explain extended select * from t3 where NULL >= some (select b from t2 group by 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +2 SUBQUERY t2 system NULL NULL NULL NULL 0 0.00 const row not found +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0 +insert into t2 values (2,2), (2,1), (3,3), (3,1); +select * from t3 where a > all (select max(b) from t2 group by a); +a +6 +7 +explain extended select * from t3 where a > all (select max(b) from t2 group by a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) from `test`.`t2` group by `test`.`t2`.`a`))) +drop table t2, t3; +CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ; +INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now()); +CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647; +INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0); +CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY (`taskgenid`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ; +INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1); +CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status'); +select dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid; +dbid name (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') +-1 Valid 1 +-1 Valid 2 1 +-1 Should Not Return 0 +SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')) AND t4.task_id = taskid; +dbid name +-1 Valid +-1 Valid 2 +drop table t1,t2,t3,t4; +CREATE TABLE t1 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES (1),(5); +CREATE TABLE t2 (id int(11) default NULL) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES (2),(6); +select * from t1 where (1,2,6) in (select * from t2); +ERROR 21000: Operand should contain 3 column(s) +DROP TABLE t1,t2; +create table t1 (s1 int); +insert into t1 values (1); +insert into t1 values (2); +set sort_buffer_size = (select s1 from t1); +ERROR 21000: Subquery returns more than 1 row +do (select * from t1); +Warnings: +Error 1242 Subquery returns more than 1 row +drop table t1; +create table t1 (s1 char); +insert into t1 values ('e'); +select * from t1 where 'f' > any (select s1 from t1); +s1 +e +select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +s1 +e +explain extended select * from t1 where 'f' > any (select s1 from t1 union select s1 from t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 +3 UNION t1 system NULL NULL NULL NULL 1 100.00 +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 select 'e' AS `s1` from `test`.`t1` where 1 +drop table t1; +CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874'); +CREATE TABLE t2 (code char(5) NOT NULL default '',UNIQUE KEY code (code)) ENGINE=MyISAM CHARSET=latin1; +INSERT INTO t2 VALUES ('1'),('1226'),('1245'),('1862'),('18623'),('1874'),('1967'),('6'); +select c.number as phone,(select p.code from t2 p where c.number like concat(p.code, '%') order by length(p.code) desc limit 1) as code from t1 c; +phone code +69294728265 6 +18621828126 1862 +89356874041 NULL +95895001874 NULL +drop table t1, t2; +create table t1 (s1 int); +create table t2 (s1 int); +select * from t1 where (select count(*) from t2 where t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'where clause' +select * from t1 where (select count(*) from t2 group by t1.s2) = 1; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +select count(*) from t2 group by t1.s2; +ERROR 42S22: Unknown column 't1.s2' in 'group statement' +drop table t1, t2; +CREATE TABLE t1(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC VARCHAR(20) DEFAULT NULL,PRIMARY KEY (COLA, COLB)); +CREATE TABLE t2(COLA FLOAT NOT NULL,COLB FLOAT NOT NULL,COLC CHAR(1) NOT NULL,PRIMARY KEY (COLA)); +INSERT INTO t1 VALUES (1,1,'1A3240'), (1,2,'4W2365'); +INSERT INTO t2 VALUES (100, 200, 'C'); +SELECT DISTINCT COLC FROM t1 WHERE COLA = (SELECT COLA FROM t2 WHERE COLB = 200 AND COLC ='C' LIMIT 1); +COLC +DROP TABLE t1, t2; +CREATE TABLE t1 (a int(1)); +INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5); +SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100; +(SELECT a) +1 +2 +3 +4 +5 +DROP TABLE t1; +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +select a, (select max(b) from t1) into outfile "../../tmp/subselect.out.file.1" from t1; +delete from t1; +load data infile "../../tmp/subselect.out.file.1" into table t1; +select * from t1; +a b +1 0.123 +drop table t1; +CREATE TABLE `t1` ( +`id` int(11) NOT NULL auto_increment, +`id_cns` tinyint(3) unsigned NOT NULL default '0', +`tipo` enum('','UNO','DUE') NOT NULL default '', +`anno_dep` smallint(4) unsigned zerofill NOT NULL default '0000', +`particolare` mediumint(8) unsigned NOT NULL default '0', +`generale` mediumint(8) unsigned NOT NULL default '0', +`bis` tinyint(3) unsigned NOT NULL default '0', +PRIMARY KEY (`id`), +UNIQUE KEY `idx_cns_gen_anno` (`anno_dep`,`id_cns`,`generale`,`particolare`), +UNIQUE KEY `idx_cns_par_anno` (`id_cns`,`anno_dep`,`tipo`,`particolare`,`bis`) +); +INSERT INTO `t1` VALUES (1,16,'UNO',1987,2048,9681,0),(2,50,'UNO',1987,1536,13987,0),(3,16,'UNO',1987,2432,14594,0),(4,16,'UNO',1987,1792,13422,0),(5,16,'UNO',1987,1025,10240,0),(6,16,'UNO',1987,1026,7089,0); +CREATE TABLE `t2` ( +`id` tinyint(3) unsigned NOT NULL auto_increment, +`max_anno_dep` smallint(6) unsigned NOT NULL default '0', +PRIMARY KEY (`id`) +); +INSERT INTO `t2` VALUES (16,1987),(50,1990),(51,1990); +SELECT cns.id, cns.max_anno_dep, cns.max_anno_dep = (SELECT s.anno_dep FROM t1 AS s WHERE s.id_cns = cns.id ORDER BY s.anno_dep DESC LIMIT 1) AS PIPPO FROM t2 AS cns; +id max_anno_dep PIPPO +16 1987 1 +50 1990 0 +51 1990 NULL +DROP TABLE t1, t2; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SET SQL_SELECT_LIMIT=1; +select sum(a) from (select * from t1) as a; +sum(a) +6 +select 2 in (select * from t1); +2 in (select * from t1) +1 +SET SQL_SELECT_LIMIT=default; +drop table t1; +CREATE TABLE t1 (a int, b int, INDEX (a)); +INSERT INTO t1 VALUES (1, 1), (1, 2), (1, 3); +SELECT * FROM t1 WHERE a = (SELECT MAX(a) FROM t1 WHERE a = 1) ORDER BY b; +a b +1 1 +1 2 +1 3 +DROP TABLE t1; +create table t1(val varchar(10)); +insert into t1 values ('aaa'), ('bbb'),('eee'),('mmm'),('ppp'); +select count(*) from t1 as w1 where w1.val in (select w2.val from t1 as w2 where w2.val like 'm%') and w1.val in (select w3.val from t1 as w3 where w3.val like 'e%'); +count(*) +0 +drop table t1; +create table t1 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t1 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text11'), (12, 'text12'); +select * from t1 where id not in (select id from t1 where id < 8); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id text +8 text8 +9 text9 +10 text10 +11 text11 +12 text12 +explain extended select * from t1 where id not in (select id from t1 where id < 8); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where +Warnings: +Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where ((`test`.`t1`.`id` < 8) and (<cache>(`test`.`t1`.`id`) = `test`.`t1`.`id`)))))))) +explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY tt ALL NULL NULL NULL NULL 12 100.00 Using where +2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 100.00 Using where; Using index +Warnings: +Note 1276 Field or reference 'test.tt.id' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(<expr_cache><`test`.`tt`.`id`>(exists(select `test`.`t1`.`id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null))))) +insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001'); +create table t2 (id int not null, text varchar(20) not null default '', primary key (id)); +insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10'); +select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id text id text id text +1 text1 1 text1 1 text1 +2 text2 2 text2 2 text2 +3 text3 3 text3 3 text3 +4 text4 4 text4 4 text4 +5 text5 5 text5 5 text5 +6 text6 6 text6 6 text6 +7 text7 7 text7 7 text7 +8 text8 8 text8 8 text8 +9 text9 9 text9 9 text9 +10 text10 10 text10 10 text10 +11 text11 11 text1 11 text11 +12 text12 12 text2 12 text12 +1000 text1000 NULL NULL 1000 text1000 +1001 text1001 NULL NULL 1000 text1000 +explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE a ALL NULL NULL NULL NULL 14 100.00 +1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2 100.00 +1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 100.00 Using index condition +Warnings: +Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`b`.`id` = `test`.`a`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`) +drop table t1,t2; +create table t1 (a int); +insert into t1 values (1); +explain select benchmark(1000, (select a from t1 where a=sha(rand()))); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 1 +drop table t1; +create table t1(id int); +create table t2(id int); +create table t3(flag int); +select (select * from t3 where id not null) from t1, t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'null) from t1, t2' at line 1 +drop table t1,t2,t3; +CREATE TABLE t1 (id INT); +CREATE TABLE t2 (id INT); +INSERT INTO t1 VALUES (1), (2); +INSERT INTO t2 VALUES (1); +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id); +id c +1 1 +2 0 +SELECT t1.id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY t1.id; +id c +1 1 +2 0 +SELECT id, ( SELECT COUNT(t.id) FROM t2 AS t WHERE t.id = t1.id ) AS c FROM t1 LEFT JOIN t2 USING (id) ORDER BY id; +id c +1 1 +2 0 +DROP TABLE t1,t2; +CREATE TABLE t1 ( a int, b int ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +ALTER TABLE t1 ADD INDEX (a); +SELECT a FROM t1 WHERE a > ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +3 +SELECT a FROM t1 WHERE a < ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +SELECT a FROM t1 WHERE a = ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +SELECT a FROM t1 WHERE a >= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL ( SELECT a FROM t1 WHERE b = 2 ); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 UNION SELECT a FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 HAVING a = 2 UNION SELECT a FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE a > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) > ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a = ANY (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) = ANY (SELECT a,2 FROM t1 WHERE b = 2); +a +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 2 column(s) +SELECT a FROM t1 WHERE a <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +ERROR 21000: Operand should contain 1 column(s) +SELECT a FROM t1 WHERE (1,2) <> ALL (SELECT a,2 FROM t1 WHERE b = 2); +a +1 +2 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 WHERE b = 2 UNION SELECT a,1 FROM t1 WHERE b = 2); +a +1 +3 +SELECT a FROM t1 WHERE (a,1) = ANY (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE (a,1) <> ALL (SELECT a,1 FROM t1 HAVING a = 2 UNION SELECT a,1 FROM t1 HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2 group by a); +a +1 +3 +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 group by a HAVING a = 2); +a +1 +3 +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a > t1.a), '-') +0- +0- +1- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a < t1.a), '-') +1- +0- +0- +SELECT concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') from t1 a; +concat(EXISTS(SELECT a FROM t1 WHERE b = 2 and a.a = t1.a), '-') +0- +1- +0- +DROP TABLE t1; +CREATE TABLE t1 ( a double, b double ); +INSERT INTO t1 VALUES (1,1),(2,2),(3,3); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = 2e0); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = 2e0); +a +1 +3 +DROP TABLE t1; +CREATE TABLE t1 ( a char(1), b char(1)); +INSERT INTO t1 VALUES ('1','1'),('2','2'),('3','3'); +SELECT a FROM t1 WHERE a > ANY (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ANY (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ANY (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +SELECT a FROM t1 WHERE a > ALL (SELECT a FROM t1 WHERE b = '2'); +a +3 +SELECT a FROM t1 WHERE a < ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +SELECT a FROM t1 WHERE a = ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +SELECT a FROM t1 WHERE a >= ALL (SELECT a FROM t1 WHERE b = '2'); +a +2 +3 +SELECT a FROM t1 WHERE a <= ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +2 +SELECT a FROM t1 WHERE a <> ALL (SELECT a FROM t1 WHERE b = '2'); +a +1 +3 +DROP TABLE t1; +create table t1 (a int, b int); +insert into t1 values (1,2),(3,4); +select * from t1 up where exists (select * from t1 where t1.a=up.a); +a b +1 2 +3 4 +explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY up ALL NULL NULL NULL NULL 2 100.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.up.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where <expr_cache><`test`.`up`.`a`>(exists(select 1 from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`))) +drop table t1; +CREATE TABLE t1 (t1_a int); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b)); +INSERT INTO t2 VALUES (1, 1), (1, 2); +SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1 +HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a); +t1_a t2_a t2_b +1 1 2 +DROP TABLE t1, t2; +CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL); +INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL); +CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL); +INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix'); +SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id; +id name id pet +1 Tim 1 Fido +2 Rebecca 2 Spot +3 NULL 3 Felix +drop table t1,t2; +CREATE TABLE t1 ( a int, b int ); +CREATE TABLE t2 ( c int, d int ); +INSERT INTO t1 VALUES (1,2), (2,3), (3,4); +SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +abc b +1 2 +2 3 +3 4 +INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t2; +c d +1 2 +2 3 +3 4 +CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = +(SELECT MIN(b) FROM t1 WHERE a=outr.a); +select * from t3; +abc b +1 2 +2 3 +3 4 +prepare stmt1 from "INSERT INTO t2 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +deallocate prepare stmt1; +select * from t2; +c d +1 2 +2 3 +3 4 +1 2 +2 3 +3 4 +drop table t3; +prepare stmt1 from "CREATE TABLE t3 SELECT a AS abc, b FROM t1 outr WHERE b = (SELECT MIN(b) FROM t1 WHERE a=outr.a);"; +execute stmt1; +select * from t3; +abc b +1 2 +2 3 +3 4 +deallocate prepare stmt1; +DROP TABLE t1, t2, t3; +CREATE TABLE `t1` ( `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t1 values (1); +CREATE TABLE `t2` ( `b` int(11) default NULL, `a` int(11) default NULL) ENGINE=MyISAM DEFAULT CHARSET=latin1; +insert into t2 values (1,2); +select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1); +a C +1 1 +drop table t1,t2; +create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b)); +insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'), ('Patrik'),('Hakan'); +create table t2 (a int); +insert into t2 values (1),(3),(2),(7); +select a,b from t1 where match(b) against ('Ball') > 0; +a b +1 ball +2 ball games +select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0); +a +1 +2 +drop table t1,t2; +CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin); +CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001'); +INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001'); +SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001'); +IZAVORGANG_ID +D0000000001 +drop table t1; +CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`)); +insert into t1 values (1,1),(1,2),(2,1),(2,2); +insert into t2 values (1,2),(2,2); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop primary key; +alter table t2 add key KEY1 (aid, bid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +alter table t2 drop key KEY1; +alter table t2 add primary key (bid, aid); +select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid); +aid bid +1 1 +2 1 +drop table t1,t2; +CREATE TABLE t1 (howmanyvalues bigint, avalue int); +INSERT INTO t1 VALUES (1, 1),(2, 1),(2, 2),(3, 1),(3, 2),(3, 3),(4, 1),(4, 2),(4, 3),(4, 4); +SELECT howmanyvalues, count(*) from t1 group by howmanyvalues; +howmanyvalues count(*) +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +CREATE INDEX t1_howmanyvalues_idx ON t1 (howmanyvalues); +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues+1 = a.howmanyvalues+1) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 2 +3 3 +4 4 +SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.avalue) as mycount from t1 a group by a.howmanyvalues; +howmanyvalues mycount +1 1 +2 1 +3 1 +4 1 +drop table t1; +create table t1 (x int); +select (select b.x from t1 as b where b.x=a.x) from t1 as a where a.x=2 group by a.x; +(select b.x from t1 as b where b.x=a.x) +drop table t1; +CREATE TABLE `t1` ( `master` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `slave` int(10) unsigned NOT NULL default '0', `access` int(10) unsigned NOT NULL default '0', UNIQUE KEY `access_u` (`master`,`map`,`slave`)); +INSERT INTO `t1` VALUES (1,0,0,700),(1,1,1,400),(1,5,5,400),(1,12,12,400),(1,12,32,400),(4,12,32,400); +CREATE TABLE `t2` ( `id` int(10) unsigned NOT NULL default '0', `pid` int(10) unsigned NOT NULL default '0', `map` smallint(6) unsigned NOT NULL default '0', `level` tinyint(4) unsigned NOT NULL default '0', `title` varchar(255) default NULL, PRIMARY KEY (`id`,`pid`,`map`), KEY `level` (`level`), KEY `id` (`id`,`map`)) ; +INSERT INTO `t2` VALUES (6,5,12,7,'a'),(12,0,0,7,'a'),(12,1,0,7,'a'),(12,5,5,7,'a'),(12,5,12,7,'a'); +SELECT b.sc FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ERROR 42S22: Unknown column 'b.sc' in 'field list' +SELECT b.ac FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b; +ac +700 +NULL +drop tables t1,t2; +create table t1 (a int not null, b int not null, c int, primary key (a,b)); +insert into t1 values (1,1,1), (2,2,2), (3,3,3); +set @b:= 0; +explain select sum(a) from t1 where b > @b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 8 NULL 3 Using where; Using index +set @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +do @a:= (select sum(a) from t1 where b > @b); +explain select a from t1 where c=2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where +drop table t1; +set @got_val= (SELECT 1 FROM (SELECT 'A' as my_col) as T1 ) ; +create table t1 (a int, b int); +create table t2 (a int, b int); +insert into t1 values (1,1),(1,2),(1,3),(2,4),(2,5); +insert into t2 values (1,3),(2,1); +select distinct a,b, (select max(b) from t2 where t1.b=t2.a) from t1 order by t1.b; +a b (select max(b) from t2 where t1.b=t2.a) +1 1 3 +1 2 1 +1 3 NULL +2 4 NULL +2 5 NULL +drop table t1, t2; +create table t1 (id int); +create table t2 (id int, body text, fulltext (body)); +insert into t1 values(1),(2),(3); +insert into t2 values (1,'test'), (2,'mysql'), (3,'test'), (4,'test'); +select count(distinct id) from t1 where id in (select id from t2 where match(body) against ('mysql' in boolean mode)); +count(distinct id) +1 +drop table t2,t1; +create table t1 (s1 int,s2 int); +insert into t1 values (20,15); +select * from t1 where (('a',null) <=> (select 'a',s2 from t1 where s1 = 0)); +s1 s2 +drop table t1; +create table t1 (s1 int); +insert into t1 values (1),(null); +select * from t1 where s1 < all (select s1 from t1); +s1 +select s1, s1 < all (select s1 from t1) from t1; +s1 s1 < all (select s1 from t1) +1 0 +NULL NULL +drop table t1; +CREATE TABLE t1 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL default 'Asia', +Region char(26) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +IndepYear smallint(6) default NULL, +Population int(11) NOT NULL default '0', +LifeExpectancy float(3,1) default NULL, +GNP float(10,2) default NULL, +GNPOld float(10,2) default NULL, +LocalName char(45) NOT NULL default '', +GovernmentForm char(45) NOT NULL default '', +HeadOfState char(60) default NULL, +Capital int(11) default NULL, +Code2 char(2) NOT NULL default '' +) ENGINE=MyISAM; +INSERT INTO t1 VALUES ('XXX','Xxxxx','Oceania','Xxxxxx',26.00,0,0,0,0,0,'Xxxxx','Xxxxx','Xxxxx',NULL,'XX'); +INSERT INTO t1 VALUES ('ASM','American Samoa','Oceania','Polynesia',199.00,0,68000,75.1,334.00,NULL,'Amerika Samoa','US Territory','George W. Bush',54,'AS'); +INSERT INTO t1 VALUES ('ATF','French Southern territories','Antarctica','Antarctica',7780.00,0,0,NULL,0.00,NULL,'Terres australes françaises','Nonmetropolitan Territory of France','Jacques Chirac',NULL,'TF'); +INSERT INTO t1 VALUES ('UMI','United States Minor Outlying Islands','Oceania','Micronesia/Caribbean',16.00,0,0,NULL,0.00,NULL,'United States Minor Outlying Islands','Dependent Territory of the US','George W. Bush',NULL,'UM'); +/*!40000 ALTER TABLE t1 ENABLE KEYS */; +SELECT DISTINCT Continent AS c FROM t1 outr WHERE +Code <> SOME ( SELECT Code FROM t1 WHERE Continent = outr.Continent AND +Population < 200); +c +Oceania +drop table t1; +create table t1 (a1 int); +create table t2 (b1 int); +select * from t1 where a2 > any(select b1 from t2); +ERROR 42S22: Unknown column 'a2' in 'IN/ALL/ANY subquery' +select * from t1 where a1 > any(select b1 from t2); +a1 +drop table t1,t2; +create table t1 (a integer, b integer); +select (select * from t1) = (select 1,2); +(select * from t1) = (select 1,2) +NULL +select (select 1,2) = (select * from t1); +(select 1,2) = (select * from t1) +NULL +select row(1,2) = ANY (select * from t1); +row(1,2) = ANY (select * from t1) +0 +select row(1,2) != ALL (select * from t1); +row(1,2) != ALL (select * from t1) +1 +drop table t1; +create table t1 (a integer, b integer); +select row(1,(2,2)) in (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select row(1,(2,2)) = (select * from t1 ); +ERROR 21000: Operand should contain 2 column(s) +select (select * from t1) = row(1,(2,2)); +ERROR 21000: Operand should contain 1 column(s) +drop table t1; +create table t1 (a integer); +insert into t1 values (1); +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx ; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 as xx, 1 = ALL ( select 1 from t1 where 1 = xx ); +xx 1 = ALL ( select 1 from t1 where 1 = xx ) +1 1 +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx from DUAL; +ERROR 42S22: Reference 'xx' not supported (forward reference in item list) +drop table t1; +CREATE TABLE t1 ( +categoryId int(11) NOT NULL, +courseId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +attributes text NOT NULL +); +INSERT INTO t1 VALUES (1,41,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(1,86,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(1,87,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,52,'2004-03-15','2004-10-01','2004-03-15','2004-09-17',''), +(2,53,'2004-03-16','2004-10-01','2004-03-16','2004-09-17',''), +(2,88,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(2,89,'2004-08-16','2004-08-16','2004-08-16','2004-08-16',''), +(3,51,'2004-02-09','2010-01-01','2004-02-09','2004-02-09',''), +(5,12,'2004-02-18','2010-01-01','2004-02-18','2004-02-18',''); +CREATE TABLE t2 ( +userId int(11) NOT NULL, +courseId int(11) NOT NULL, +date datetime NOT NULL +); +INSERT INTO t2 VALUES (5141,71,'2003-11-18'), +(5141,72,'2003-11-25'),(5141,41,'2004-08-06'), +(5141,52,'2004-08-06'),(5141,53,'2004-08-06'), +(5141,12,'2004-08-06'),(5141,86,'2004-10-21'), +(5141,87,'2004-10-21'),(5141,88,'2004-10-21'), +(5141,89,'2004-10-22'),(5141,51,'2004-10-26'); +CREATE TABLE t3 ( +groupId int(11) NOT NULL, +parentId int(11) NOT NULL, +startDate datetime NOT NULL, +endDate datetime NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL, +ordering int(11) +); +INSERT INTO t3 VALUES (12,9,'1000-01-01','3999-12-31','2004-01-29','2004-01-29',NULL); +CREATE TABLE t4 ( +id int(11) NOT NULL, +groupTypeId int(11) NOT NULL, +groupKey varchar(50) NOT NULL, +name text, +ordering int(11), +description text, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t4 VALUES (9,5,'stationer','stationer',0,'Stationer','2004-01-29','2004-01-29'), +(12,5,'group2','group2',0,'group2','2004-01-29','2004-01-29'); +CREATE TABLE t5 ( +userId int(11) NOT NULL, +groupId int(11) NOT NULL, +createDate datetime NOT NULL, +modifyDate timestamp NOT NULL +); +INSERT INTO t5 VALUES (5141,12,'2004-08-06','2004-08-06'); +select +count(distinct t2.userid) pass, +groupstuff.*, +count(t2.courseid) crse, +t1.categoryid, +t2.courseid, +date_format(date, '%b%y') as colhead +from t2 +join t1 on t2.courseid=t1.courseid +join +( +select +t5.userid, +parentid, +parentgroup, +childid, +groupname, +grouptypeid +from t5 +join +( +select t4.id as parentid, +t4.name as parentgroup, +t4.id as childid, +t4.name as groupname, +t4.grouptypeid +from t4 +) as gin on t5.groupid=gin.childid +) as groupstuff on t2.userid = groupstuff.userid +group by +groupstuff.groupname, colhead , t2.courseid; +pass userid parentid parentgroup childid groupname grouptypeid crse categoryid courseid colhead +1 5141 12 group2 12 group2 5 1 5 12 Aug04 +1 5141 12 group2 12 group2 5 1 1 41 Aug04 +1 5141 12 group2 12 group2 5 1 2 52 Aug04 +1 5141 12 group2 12 group2 5 1 2 53 Aug04 +1 5141 12 group2 12 group2 5 1 3 51 Oct04 +1 5141 12 group2 12 group2 5 1 1 86 Oct04 +1 5141 12 group2 12 group2 5 1 1 87 Oct04 +1 5141 12 group2 12 group2 5 1 2 88 Oct04 +1 5141 12 group2 12 group2 5 1 2 89 Oct04 +drop table t1, t2, t3, t4, t5; +create table t1 (a int); +insert into t1 values (1), (2), (3); +SELECT 1 FROM t1 WHERE (SELECT 1) in (SELECT 1); +1 +1 +1 +1 +drop table t1; +create table t1 (a int); +create table t2 (a int); +insert into t1 values (1),(2); +insert into t2 values (0),(1),(2),(3); +select a from t2 where a in (select a from t1); +a +1 +2 +select a from t2 having a in (select a from t1); +a +1 +2 +prepare stmt1 from "select a from t2 where a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +prepare stmt1 from "select a from t2 having a in (select a from t1)"; +execute stmt1; +a +1 +2 +execute stmt1; +a +1 +2 +deallocate prepare stmt1; +drop table t1, t2; +create table t1 (a int, b int); +insert into t1 values (1,2); +select 1 = (select * from t1); +ERROR 21000: Operand should contain 1 column(s) +select (select * from t1) = 1; +ERROR 21000: Operand should contain 2 column(s) +select (1,2) = (select a from t1); +ERROR 21000: Operand should contain 2 column(s) +select (select a from t1) = (1,2); +ERROR 21000: Operand should contain 1 column(s) +select (1,2,3) = (select * from t1); +ERROR 21000: Operand should contain 3 column(s) +select (select * from t1) = (1,2,3); +ERROR 21000: Operand should contain 2 column(s) +drop table t1; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (one int, two int, flag char(1)); +CREATE TABLE t2 (one int, two int, flag char(1)); +INSERT INTO t1 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +INSERT INTO t2 VALUES(1,2,'Y'),(2,3,'Y'),(3,4,'Y'),(5,6,'N'),(7,8,'N'); +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t2 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +SELECT * FROM t1 +WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t1 WHERE flag = 'N'); +one two flag +5 6 N +7 8 N +insert into t2 values (null,null,'N'); +insert into t2 values (null,3,'0'); +insert into t2 values (null,5,'0'); +insert into t2 values (10,null,'0'); +insert into t1 values (10,3,'0'); +insert into t1 values (10,5,'0'); +insert into t1 values (10,10,'0'); +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +one two +5 6 +7 8 +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1; +one two test +1 2 NULL +2 3 NULL +3 4 NULL +5 6 1 +7 8 1 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +one two test +1 2 0 +2 3 NULL +3 4 0 +5 6 0 +7 8 0 +10 3 NULL +10 5 NULL +10 10 NULL +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where ((`test`.`t2`.`flag` = '0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),(`test`.`t1`.`one`,`test`.`t1`.`two`) in ( <materialize> (select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = 'N') ), <primary_index_lookup>(`test`.`t1`.`one` in <temporary table> on distinct_key where ((`test`.`t1`.`one` = `materialized subselect`.`one`) and (`test`.`t1`.`two` = `materialized subselect`.`two`)))))) +explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`two`,`test`.`t1`.`one`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`)))))) AS `test` from `test`.`t1` +DROP TABLE t1,t2; +CREATE TABLE t1 (a char(5), b char(5)); +INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa'); +SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb')); +a b +aaa aaa +DROP TABLE t1; +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int, b int); +CREATE TABLE t3 (b int NOT NULL); +INSERT INTO t1 VALUES (1), (2), (3), (4); +INSERT INTO t2 VALUES (1,10), (3,30); +SELECT * FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10; +a b b +SELECT * FROM t1 +WHERE t1.a NOT IN (SELECT a FROM t2 LEFT JOIN t3 ON t2.b=t3.b +WHERE t3.b IS NOT NULL OR t2.a > 10); +a +1 +2 +3 +4 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (f1 INT); +CREATE TABLE t2 (f2 INT); +INSERT INTO t1 VALUES (1); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2); +f1 +1 +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE 1=0); +f1 +1 +INSERT INTO t2 VALUES (1); +INSERT INTO t2 VALUES (2); +SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE f2=0); +f1 +1 +DROP TABLE t1, t2; +select 1 from dual where 1 < any (select 2); +1 +1 +select 1 from dual where 1 < all (select 2); +1 +1 +select 1 from dual where 2 > any (select 1); +1 +1 +select 1 from dual where 2 > all (select 1); +1 +1 +select 1 from dual where 1 < any (select 2 from dual); +1 +1 +select 1 from dual where 1 < all (select 2 from dual where 1!=1); +1 +1 +create table t1 (s1 char); +insert into t1 values (1),(2); +select * from t1 where (s1 < any (select s1 from t1)); +s1 +1 +select * from t1 where not (s1 < any (select s1 from t1)); +s1 +2 +select * from t1 where (s1 < ALL (select s1+1 from t1)); +s1 +1 +select * from t1 where not(s1 < ALL (select s1+1 from t1)); +s1 +2 +select * from t1 where (s1+1 = ANY (select s1 from t1)); +s1 +1 +select * from t1 where NOT(s1+1 = ANY (select s1 from t1)); +s1 +2 +select * from t1 where (s1 = ALL (select s1/s1 from t1)); +s1 +1 +select * from t1 where NOT(s1 = ALL (select s1/s1 from t1)); +s1 +2 +drop table t1; +create table t1 ( +retailerID varchar(8) NOT NULL, +statusID int(10) unsigned NOT NULL, +changed datetime NOT NULL, +UNIQUE KEY retailerID (retailerID, statusID, changed) +); +INSERT INTO t1 VALUES("0026", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0026", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0037", "1", "2005-12-06 12:18:56"); +INSERT INTO t1 VALUES("0037", "2", "2006-01-06 12:25:53"); +INSERT INTO t1 VALUES("0048", "1", "2006-01-06 12:37:50"); +INSERT INTO t1 VALUES("0059", "1", "2006-01-06 12:37:50"); +select * from t1 r1 +where (r1.retailerID,(r1.changed)) in +(SELECT r2.retailerId,(max(changed)) from t1 r2 +group by r2.retailerId); +retailerID statusID changed +0026 2 2006-01-06 12:25:53 +0037 2 2006-01-06 12:25:53 +0048 1 2006-01-06 12:37:50 +0059 1 2006-01-06 12:37:50 +drop table t1; +create table t1(a int, primary key (a)); +insert into t1 values (10); +create table t2 (a int primary key, b varchar(32), c int, unique key b(c, b)); +insert into t2(a, c, b) values (1,10,'359'), (2,10,'35988'), (3,10,'35989'); +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10; +a a b +10 3 35989 +explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +1 PRIMARY r const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY t2 range b b 40 NULL 2 Using index condition +SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r +ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899' + ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10; +a a b +10 1 359 +drop table t1,t2; +CREATE TABLE t1 ( +field1 int NOT NULL, +field2 int NOT NULL, +field3 int NOT NULL, +PRIMARY KEY (field1,field2,field3) +); +CREATE TABLE t2 ( +fieldA int NOT NULL, +fieldB int NOT NULL, +PRIMARY KEY (fieldA,fieldB) +); +INSERT INTO t1 VALUES +(1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1); +INSERT INTO t2 VALUES (1,1), (1,2), (1,3); +SELECT field1, field2, COUNT(*) +FROM t1 GROUP BY field1, field2; +field1 field2 COUNT(*) +1 1 2 +1 2 3 +1 3 1 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) >= ALL (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 2 +SELECT field1, field2 +FROM t1 +GROUP BY field1, field2 +HAVING COUNT(*) < ANY (SELECT fieldB +FROM t2 WHERE fieldA = field1); +field1 field2 +1 1 +1 3 +DROP TABLE t1, t2; +CREATE TABLE t1(a int, INDEX (a)); +INSERT INTO t1 VALUES (1), (3), (5), (7); +INSERT INTO t1 VALUES (NULL); +CREATE TABLE t2(a int); +INSERT INTO t2 VALUES (1),(2),(3); +EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 +2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index; Full scan on NULL key +SELECT a, a IN (SELECT a FROM t1) FROM t2; +a a IN (SELECT a FROM t1) +1 1 +2 NULL +3 1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a DATETIME); +INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25'); +CREATE TABLE t2 AS SELECT +(SELECT a FROM t1 WHERE a < '2000-01-01') AS sub_a +FROM t1 WHERE a > '2000-01-01'; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `sub_a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +CREATE TABLE t3 AS (SELECT a FROM t1 WHERE a < '2000-01-01') UNION (SELECT a FROM t1 WHERE a > '2000-01-01'); +SHOW CREATE TABLE t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `a` datetime DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) > 0; +a +SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +a +1 +2 +EXPLAIN SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +DROP TABLE t1; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2), (4), (1), (3); +CREATE TABLE t2 (b int, c int); +INSERT INTO t2 VALUES +(2,1), (1,3), (2,1), (4,4), (2,2), (1,4); +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2 ); +a +2 +4 +1 +3 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 2), a; +a +1 +2 +3 +4 +SELECT a FROM t1 ORDER BY (SELECT c FROM t2 WHERE b > 1), a; +ERROR 21000: Subquery returns more than 1 row +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 2); +b MAX(c) +1 4 +2 2 +4 4 +SELECT b, MAX(c) FROM t2 GROUP BY b, (SELECT c FROM t2 WHERE b > 1); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +1 +2 +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)) > 3; +a +4 +SELECT a FROM t1 GROUP BY a +HAVING IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)) > 3; +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 2), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +4 +1 +3 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 1), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 2 ORDER BY b)); +a +2 +1 +3 +4 +SELECT a FROM t1 +ORDER BY IFNULL((SELECT b FROM t2 WHERE b > 4), +(SELECT c FROM t2 WHERE c=a AND b > 1 ORDER BY b)); +ERROR 21000: Subquery returns more than 1 row +DROP TABLE t1,t2; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +insert into t1 values(2.2); +select * from t1 where df <= all (select avg(df) from t1 group by df); +df +1.1 +select * from t1 where df >= all (select avg(df) from t1 group by df); +df +2.2 +drop table t1; +create table t1 (df decimal(5,1)); +insert into t1 values(1.1); +select 1.1 * exists(select * from t1); +1.1 * exists(select * from t1) +1.1 +drop table t1; +CREATE TABLE t1 ( +grp int(11) default NULL, +a decimal(10,2) default NULL); +insert into t1 values (1, 1), (2, 2), (2, 3), (3, 4), (3, 5), (3, 6), (NULL, NULL); +select * from t1; +grp a +1 1.00 +2 2.00 +2 3.00 +3 4.00 +3 5.00 +3 6.00 +NULL NULL +select min(a) from t1 group by grp; +min(a) +NULL +1.00 +2.00 +4.00 +drop table t1; +CREATE table t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 WHERE c2 IN (1); +c1 c2 +1 1 +SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE c2 IN ( SELECT c2 FROM t2 WHERE c2 IN ( 1 ) ); +c1 c2 +1 1 +DROP TABLE t1,t2; +CREATE TABLE t1 ( c1 integer ); +INSERT INTO t1 VALUES ( 1 ); +INSERT INTO t1 VALUES ( 2 ); +INSERT INTO t1 VALUES ( 3 ); +INSERT INTO t1 VALUES ( 6 ); +CREATE TABLE t2 ( c2 integer ); +INSERT INTO t2 VALUES ( 1 ); +INSERT INTO t2 VALUES ( 4 ); +INSERT INTO t2 VALUES ( 5 ); +INSERT INTO t2 VALUES ( 6 ); +CREATE TABLE t3 ( c3 integer ); +INSERT INTO t3 VALUES ( 7 ); +INSERT INTO t3 VALUES ( 8 ); +SELECT c1,c2 FROM t1 LEFT JOIN t2 ON c1 = c2 +WHERE EXISTS (SELECT c3 FROM t3 WHERE c2 IS NULL ); +c1 c2 +2 NULL +3 NULL +DROP TABLE t1,t2,t3; +CREATE TABLE `t1` ( +`itemid` bigint(20) unsigned NOT NULL auto_increment, +`sessionid` bigint(20) unsigned default NULL, +`time` int(10) unsigned NOT NULL default '0', +`type` set('A','D','E','F','G','I','L','N','U') collate latin1_general_ci NOT +NULL default '', +`data` text collate latin1_general_ci NOT NULL, +PRIMARY KEY (`itemid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t1` VALUES (1, 1, 1, 'D', ''); +CREATE TABLE `t2` ( +`sessionid` bigint(20) unsigned NOT NULL auto_increment, +`pid` int(10) unsigned NOT NULL default '0', +`date` int(10) unsigned NOT NULL default '0', +`ip` varchar(15) collate latin1_general_ci NOT NULL default '', +PRIMARY KEY (`sessionid`) +) DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; +INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1'); +SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30; +ip count( e.itemid ) +10.10.10.1 1 +drop tables t1,t2; +CREATE TABLE t1 (EMPNUM CHAR(3)); +CREATE TABLE t2 (EMPNUM CHAR(3) ); +INSERT INTO t1 VALUES ('E1'),('E2'); +INSERT INTO t2 VALUES ('E1'); +DELETE FROM t1 +WHERE t1.EMPNUM NOT IN +(SELECT t2.EMPNUM +FROM t2 +WHERE t1.EMPNUM = t2.EMPNUM); +select * from t1; +EMPNUM +E1 +DROP TABLE t1,t2; +CREATE TABLE t1(select_id BIGINT, values_id BIGINT); +INSERT INTO t1 VALUES (1, 1); +CREATE TABLE t2 (select_id BIGINT, values_id BIGINT, +PRIMARY KEY(select_id,values_id)); +INSERT INTO t2 VALUES (0, 1), (0, 2), (0, 3), (1, 5); +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id IN (1, 0)); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id BETWEEN 0 AND 1); +values_id +1 +SELECT values_id FROM t1 +WHERE values_id IN (SELECT values_id FROM t2 +WHERE select_id = 0 OR select_id = 1); +values_id +1 +DROP TABLE t1, t2; +create table t1 (fld enum('0','1')); +insert into t1 values ('1'); +select * from (select max(fld) from t1) as foo; +max(fld) +1 +drop table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (c int, d int); +CREATE TABLE t3 (e int); +INSERT INTO t1 VALUES +(1,10), (2,10), (1,20), (2,20), (3,20), (2,30), (4,40); +INSERT INTO t2 VALUES +(2,10), (2,20), (4,10), (5,10), (3,20), (2,40); +INSERT INTO t3 VALUES (10), (30), (10), (20) ; +SELECT a, MAX(b), MIN(b) FROM t1 GROUP BY a; +a MAX(b) MIN(b) +1 20 10 +2 30 10 +3 20 20 +4 40 40 +SELECT * FROM t2; +c d +2 10 +2 20 +4 10 +5 10 +3 20 +2 40 +SELECT * FROM t3; +e +10 +30 +10 +20 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>20); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)<d); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 WHERE MAX(b)>d); +a +2 +4 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d >= SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +3 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE d > SOME(SELECT e FROM t3 WHERE MAX(b)=e)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e < d)); +a +2 +SELECT a FROM t1 GROUP BY a +HAVING a IN (SELECT c FROM t2 +WHERE MIN(b) < d AND +EXISTS(SELECT e FROM t3 WHERE MAX(b)=e AND e <= d)); +a +2 +SELECT a, SUM(a) FROM t1 GROUP BY a; +a SUM(a) +1 2 +2 6 +3 3 +4 4 +SELECT a FROM t1 +WHERE EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c) GROUP BY a; +a +3 +4 +SELECT a FROM t1 GROUP BY a +HAVING EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) = c); +a +1 +3 +4 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c) GROUP BY a; +a +1 +2 +SELECT a FROM t1 +WHERE a < 3 AND +EXISTS(SELECT c FROM t2 GROUP BY c HAVING SUM(a) != c); +a +1 +2 +1 +2 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a < ALL(SELECT t2.c FROM t2 GROUP BY t2.c +HAVING EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +1 +2 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 GROUP BY t3.e +HAVING SUM(t1.a+t2.c) < t3.e/4)); +a +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a > ALL(SELECT t2.c FROM t2 +WHERE EXISTS(SELECT t3.e FROM t3 +WHERE SUM(t1.a+t2.c) < t3.e/4)); +ERROR HY000: Invalid use of group function +SELECT t1.a from t1 GROUP BY t1.a HAVING AVG(SUM(t1.b)) > 20; +ERROR HY000: Invalid use of group function +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(t2.c+SUM(t1.b)) > 20); +a +2 +3 +4 +SELECT t1.a FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING AVG(SUM(t1.b)) > 20); +a +2 +4 +SELECT t1.a, SUM(b) AS sum FROM t1 GROUP BY t1.a +HAVING t1.a IN (SELECT t2.c FROM t2 GROUP BY t2.c +HAVING t2.c+sum > 20); +a sum +2 60 +3 20 +4 40 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a varchar(5), b varchar(10)); +INSERT INTO t1 VALUES +('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2), +('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +ALTER TABLE t1 ADD INDEX(a); +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +a b +BBB 4 +CCC 7 +AAA 8 +EXPLAIN +SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +DROP TABLE t1; +create table t1( f1 int,f2 int); +insert into t1 values (1,1),(2,2); +select tt.t from (select 'crash1' as t, f2 from t1) as tt left join t1 on tt.t = 'crash2' and tt.f2 = t1.f2 where tt.t = 'crash1'; +t +crash1 +crash1 +drop table t1; +create table t1 (c int, key(c)); +insert into t1 values (1142477582), (1142455969); +create table t2 (a int, b int); +insert into t2 values (2, 1), (1, 0); +delete from t1 where c <= 1140006215 and (select b from t2 where a = 2) = 1; +drop table t1, t2; +CREATE TABLE t1 (a INT); +CREATE VIEW v1 AS SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +CREATE VIEW v2 AS SELECT * FROM t1 WHERE no_such_column = (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'where clause' +SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1); +ERROR 42S22: Unknown column 'no_such_column' in 'IN/ALL/ANY subquery' +DROP TABLE t1; +create table t1 (i int, j bigint); +insert into t1 values (1, 2), (2, 2), (3, 2); +select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3; +min(i) +1 +drop table t1; +CREATE TABLE t1 (i BIGINT UNSIGNED); +INSERT INTO t1 VALUES (10000000000000000000); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (i BIGINT UNSIGNED); +INSERT INTO t2 VALUES (10000000000000000000); +INSERT INTO t2 VALUES (1); +/* simple test */ +SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i; +i +10000000000000000000 +1 +/* subquery test */ +SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2); +i +10000000000000000000 +/* subquery test with cast*/ +SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED); +i +10000000000000000000 +DROP TABLE t1; +DROP TABLE t2; +CREATE TABLE t1 ( +id bigint(20) unsigned NOT NULL auto_increment, +name varchar(255) NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES +(1, 'Balazs'), (2, 'Joe'), (3, 'Frank'); +CREATE TABLE t2 ( +id bigint(20) unsigned NOT NULL auto_increment, +mid bigint(20) unsigned NOT NULL, +date date NOT NULL, +PRIMARY KEY (id) +); +INSERT INTO t2 VALUES +(1, 1, '2006-03-30'), (2, 2, '2006-04-06'), (3, 3, '2006-04-13'), +(4, 2, '2006-04-20'), (5, 1, '2006-05-01'); +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 3, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 NULL +2 Joe 2006-04-20 NULL +3 Frank 2006-04-13 NULL +SELECT *, +(SELECT COUNT(*) FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_count +FROM t1; +id name date_count +1 Balazs NULL +2 Joe NULL +3 Frank NULL +SELECT *, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 0, 1) AS date_last, +(SELECT date FROM t2 WHERE mid = t1.id +ORDER BY date DESC LIMIT 1, 1) AS date_next_to_last +FROM t1; +id name date_last date_next_to_last +1 Balazs 2006-05-01 2006-03-30 +2 Joe 2006-04-20 2006-04-06 +3 Frank 2006-04-13 NULL +DROP TABLE t1,t2; +CREATE TABLE t1 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime NOT NULL default '0000-00-00 00:00:00', +PRIMARY KEY (i1,i2,t) +); +INSERT INTO t1 VALUES +(24,1,'2005-03-03 16:31:31'),(24,1,'2005-05-27 12:40:07'), +(24,1,'2005-05-27 12:40:08'),(24,1,'2005-05-27 12:40:10'), +(24,1,'2005-05-27 12:40:25'),(24,1,'2005-05-27 12:40:30'), +(24,2,'2005-03-03 13:43:05'),(24,2,'2005-03-03 16:23:31'), +(24,2,'2005-03-03 16:31:30'),(24,2,'2005-05-27 12:37:02'), +(24,2,'2005-05-27 12:40:06'); +CREATE TABLE t2 ( +i1 int(11) NOT NULL default '0', +i2 int(11) NOT NULL default '0', +t datetime default NULL, +PRIMARY KEY (i1) +); +INSERT INTO t2 VALUES (24,1,'2006-06-20 12:29:40'); +EXPLAIN +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY t1 index NULL PRIMARY 16 NULL 11 Using where; Using index +2 DEPENDENT SUBQUERY t1 range PRIMARY PRIMARY 16 NULL 5 Using where; Using index +SELECT * FROM t1,t2 +WHERE t1.t = (SELECT t1.t FROM t1 +WHERE t1.t < t2.t AND t1.i2=1 AND t2.i1=t1.i1 +ORDER BY t1.t DESC LIMIT 1); +i1 i2 t i1 i2 t +24 1 2005-05-27 12:40:30 24 1 2006-06-20 12:29:40 +DROP TABLE t1, t2; +CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b)); +insert into t1 (a) values (FLOOR(rand() * 100)); +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +insert into t1 (a) select FLOOR(rand() * 100) from t1; +SELECT a, +(SELECT REPEAT(' ',250) FROM t1 i1 +WHERE i1.b=t1.a ORDER BY RAND() LIMIT 1) AS a +FROM t1 ORDER BY a LIMIT 5; +a a +0 NULL +0 NULL +0 NULL +0 NULL +0 NULL +DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +CREATE TABLE t2 (a INT); +INSERT INTO t2 values (1); +INSERT INTO t1 VALUES (1,1),(1,2),(2,3),(3,4); +SELECT (SELECT COUNT(DISTINCT t1.b) from t2) FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2) +2 +1 +1 +SELECT (SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b) from t2 union select 1 from t2 where 12 < 3) +2 +1 +1 +SELECT COUNT(DISTINCT t1.b), (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b)) +2 2 +1 1 +1 1 +SELECT COUNT(DISTINCT t1.b), +(SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +FROM t1 GROUP BY t1.a; +COUNT(DISTINCT t1.b) (SELECT COUNT(DISTINCT t1.b) union select 1 from DUAL where 12 < 3) +2 2 +1 1 +1 1 +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a; +( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +2 +1 +1 +SELECT ( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +FROM t1 t2 +GROUP BY t2.a; +( +SELECT ( +SELECT ( +SELECT COUNT(DISTINCT t1.b) +) +) +FROM t1 GROUP BY t1.a LIMIT 1) +2 +2 +2 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, PRIMARY KEY (b)); +CREATE TABLE t2 (x int auto_increment, y int, z int, +PRIMARY KEY (x), FOREIGN KEY (y) REFERENCES t1 (b)); +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +insert into t1 select RAND()*1000, A.a + 10*(B.a+10*(C.a+10*D.a)) +from t3 A, t3 B, t3 C, t3 D where D.a<3; +insert into t2(y,z) select t1.b, RAND()*1000 from t1, t3; +SET SESSION sort_buffer_size = 32 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +SET SESSION sort_buffer_size = 8 * 1024 * 1024; +SELECT SQL_NO_CACHE COUNT(*) +FROM (SELECT a, b, (SELECT x FROM t2 WHERE y=b ORDER BY z DESC LIMIT 1) c +FROM t1) t; +COUNT(*) +3000 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id char(4) PRIMARY KEY, c int); +CREATE TABLE t2 (c int); +INSERT INTO t1 VALUES ('aa', 1); +INSERT INTO t2 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1); +SELECT * FROM t1 +WHERE EXISTS (SELECT c FROM t2 WHERE c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +INSERT INTO t2 VALUES (2); +CREATE TABLE t3 (c int); +INSERT INTO t3 VALUES (1); +SELECT * FROM t1 +WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1 +UNION +SELECT c from t2 WHERE c=t1.c); +id c +aa 1 +bb 2 +cc 3 +dd 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1(f1 int); +CREATE TABLE t2(f2 int, f21 int, f3 timestamp); +INSERT INTO t1 VALUES (1),(1),(2),(2); +INSERT INTO t2 VALUES (1,1,"2004-02-29 11:11:11"), (2,2,"2004-02-29 11:11:11"); +SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1; +sq +2 +4 +SELECT (SELECT SUM(1) FROM t2 ttt GROUP BY t2.f3 LIMIT 1) AS tt FROM t2; +tt +2 +2 +PREPARE stmt1 FROM 'SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1'; +EXECUTE stmt1; +sq +2 +4 +EXECUTE stmt1; +sq +2 +4 +DEALLOCATE PREPARE stmt1; +SELECT f2, AVG(f21), +(SELECT t.f3 FROM t2 AS t WHERE t2.f2=t.f2 AND t.f3=MAX(t2.f3)) AS test +FROM t2 GROUP BY f2; +f2 AVG(f21) test +1 1.0000 2004-02-29 11:11:11 +2 2.0000 2004-02-29 11:11:11 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL); +INSERT INTO t1 VALUES +(1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'), +(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'), (3,3,'j'), +(3,2,'k'), (3,1,'l'), (1,9,'m'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) AS test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +DROP TABLE t1; +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +DROP TABLE IF EXISTS t1xt2; +CREATE TABLE t1 ( +id_1 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t2 ( +id_2 int(5) NOT NULL, +t varchar(4) DEFAULT NULL +); +CREATE TABLE t1xt2 ( +id_1 int(5) NOT NULL, +id_2 int(5) NOT NULL +); +INSERT INTO t1 VALUES (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd'); +INSERT INTO t2 VALUES (2, 'bb'), (3, 'cc'), (4, 'dd'), (12, 'aa'); +INSERT INTO t1xt2 VALUES (2, 2), (3, 3), (4, 4); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 where t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +3 +4 +insert INTO t1xt2 VALUES (1, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +2 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +2 +3 +4 +insert INTO t1xt2 VALUES (2, 12); +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +1 +2 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN ((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1))); +id_1 +3 +4 +SELECT DISTINCT t1.id_1 FROM t1 WHERE +(12 NOT IN (((SELECT t1xt2.id_2 FROM t1xt2 WHERE t1.id_1 = t1xt2.id_1)))); +id_1 +3 +4 +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t1xt2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (3), (1), (2); +SELECT 'this is ' 'a test.' AS col1, a AS col2 FROM t1; +col1 col2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +SELECT * FROM (SELECT 'this is ' 'a test.' AS col1, a AS t2 FROM t1) t; +col1 t2 +this is a test. 3 +this is a test. 1 +this is a test. 2 +DROP table t1; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*), a, +(SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT m FROM t2 WHERE m = count(*) LIMIT 1) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a, +(SELECT MIN(m) FROM t2 WHERE m = count(*)) +FROM t1 GROUP BY a; +COUNT(*) a (SELECT MIN(m) FROM t2 WHERE m = count(*)) +2 2 2 +3 3 3 +1 4 1 +SELECT COUNT(*), a +FROM t1 GROUP BY a +HAVING (SELECT MIN(m) FROM t2 WHERE m = count(*)) > 1; +COUNT(*) a +2 2 +3 3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int); +CREATE TABLE t2 (m int, n int); +INSERT INTO t1 VALUES (2,2), (2,2), (3,3), (3,3), (3,3), (4,4); +INSERT INTO t2 VALUES (1,11), (2,22), (3,32), (4,44), (4,44); +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)) FROM t2 WHERE m = a) +2 2 2 +3 3 3 +1 4 1,1 +SELECT COUNT(*) c, a, +(SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +FROM t1 GROUP BY a; +c a (SELECT GROUP_CONCAT(COUNT(a)+1) FROM t2 WHERE m = a) +2 2 3 +3 3 4 +1 4 2,2 +DROP table t1,t2; +CREATE TABLE t1 (a int, b INT, d INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t1 VALUES (1,1,0,'a'), (1,2,0,'b'), (1,3,0,'c'), (1,4,0,'d'), +(1,5,0,'e'), (2,1,0,'f'), (2,2,0,'g'), (2,3,0,'h'), (3,4,0,'i'), (3,3,0,'j'), +(3,2,0,'k'), (3,1,0,'l'), (1,9,0,'m'), (1,0,10,'n'), (2,0,5,'o'), (3,0,7,'p'); +SELECT a, MAX(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +a MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a x, MAX(b), +(SELECT t.c FROM t1 AS t WHERE x=t.a AND t.b=MAX(t1.b + 0)) as test +FROM t1 GROUP BY a; +x MAX(b) test +1 9 m +2 3 h +3 4 i +SELECT a, AVG(b), +(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=AVG(t1.b)) AS test +FROM t1 WHERE t1.d=0 GROUP BY a; +a AVG(b) test +1 4.0000 d +2 2.0000 g +3 2.5000 NULL +SELECT tt.a, +(SELECT (SELECT c FROM t1 as t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt; +a test +1 n +1 n +1 n +1 n +1 n +1 n +1 n +2 o +2 o +2 o +2 o +3 p +3 p +3 p +3 p +3 p +SELECT tt.a, +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +SELECT tt.a, MAX( +(SELECT (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.d=MAX(t1.b + tt.a) +LIMIT 1) +FROM t1 WHERE t1.a=tt.a GROUP BY a LIMIT 1)) as test +FROM t1 as tt GROUP BY tt.a; +a test +1 n +2 o +3 p +DROP TABLE t1; +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (a INT); +INSERT INTO t1 values (1),(1),(1),(1); +CREATE TABLE t2 (x INT); +INSERT INTO t1 values (1000),(1001),(1002); +SELECT SUM( (SELECT COUNT(a) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT SUM( (SELECT SUM(COUNT(a)) FROM t2) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT COUNT(1) FROM DUAL; +COUNT(1) +1 +SELECT SUM( (SELECT AVG( (SELECT t1.a FROM t2) ) FROM DUAL) ) FROM t1; +ERROR HY000: Invalid use of group function +SELECT +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING t1.a < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +SELECT t1.a as XXA, +SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING XXA < 12) ) FROM t2) ) +FROM t1; +ERROR HY000: Invalid use of group function +DROP TABLE t1,t2; +CREATE TABLE t1 (a int, b int, KEY (a)); +INSERT INTO t1 VALUES (1,1),(2,1); +EXPLAIN SELECT 1 FROM t1 WHERE a = (SELECT COUNT(*) FROM t1 GROUP BY b); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref a a 5 const 1 Using where; Using index +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +DROP TABLE t1; +CREATE TABLE t1 (id int NOT NULL, st CHAR(2), INDEX idx(id)); +INSERT INTO t1 VALUES +(3,'FL'), (2,'GA'), (4,'FL'), (1,'GA'), (5,'NY'), (7,'FL'), (6,'NY'); +CREATE TABLE t2 (id int NOT NULL, INDEX idx(id)); +INSERT INTO t2 VALUES (7), (5), (1), (3); +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +3 FL +1 GA +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +1 GA +3 FL +7 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id); +id st +2 GA +4 FL +SELECT id, st FROM t1 +WHERE st IN ('GA','FL') AND NOT EXISTS(SELECT 1 FROM t2 WHERE t2.id=t1.id) +GROUP BY id; +id st +2 GA +4 FL +DROP TABLE t1,t2; +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (1), (2); +EXPLAIN EXTENDED +SELECT * FROM (SELECT count(*) FROM t1 GROUP BY a) as res; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select `res`.`count(*)` AS `count(*)` from (select count(0) AS `count(*)` from `test`.`t1` group by `test`.`t1`.`a`) `res` +DROP TABLE t1; +CREATE TABLE t1 ( +a varchar(255) default NULL, +b timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, +INDEX idx(a,b) +); +CREATE TABLE t2 ( +a varchar(255) default NULL +); +INSERT INTO t1 VALUES ('abcdefghijk','2007-05-07 06:00:24'); +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO `t1` VALUES ('asdf','2007-02-08 01:11:26'); +INSERT INTO `t2` VALUES ('abcdefghijk'); +INSERT INTO `t2` VALUES ('asdf'); +SET session sort_buffer_size=8192; +SELECT (SELECT 1 FROM t1 WHERE t1.a=t2.a ORDER BY t1.b LIMIT 1) AS d1 FROM t2; +d1 +1 +1 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INTEGER, b INTEGER); +CREATE TABLE t2 (x INTEGER); +INSERT INTO t1 VALUES (1,11), (2,22), (2,22); +INSERT INTO t2 VALUES (1), (2); +SELECT a, COUNT(b), (SELECT COUNT(b) FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT a, COUNT(b), (SELECT COUNT(b)+0 FROM t2) FROM t1 GROUP BY a; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a)/AVG(t2.x) FROM t2) FROM t1; +(SELECT SUM(t1.a)/AVG(t2.x) FROM t2) +3.3333 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (1, 2), (1,3), (1,4), (2,1), (2,2); +SELECT a1.a, COUNT(*) FROM t1 a1 WHERE a1.a = 1 +AND EXISTS( SELECT a2.a FROM t1 a2 WHERE a2.a = a1.a) +GROUP BY a1.a; +a COUNT(*) +1 3 +DROP TABLE t1; +CREATE TABLE t1 (a INT); +CREATE TABLE t2 (a INT); +INSERT INTO t1 VALUES (1),(2); +INSERT INTO t2 VALUES (1),(2); +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=0) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=0) +NULL +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1; +ERROR 21000: Subquery returns more than 1 row +SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1; +(SELECT SUM(t1.a) FROM t2 WHERE a=1) +3 +DROP TABLE t1,t2; +CREATE TABLE t1 (a1 INT, a2 INT); +CREATE TABLE t2 (b1 INT, b2 INT); +INSERT INTO t1 VALUES (100, 200); +INSERT INTO t1 VALUES (101, 201); +INSERT INTO t2 VALUES (101, 201); +INSERT INTO t2 VALUES (103, 203); +SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1; +((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL +0 +0 +DROP TABLE t1, t2; +CREATE TABLE t1 (s1 BINARY(5), s2 VARBINARY(5)); +INSERT INTO t1 VALUES (0x41,0x41), (0x42,0x42), (0x43,0x43); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +CREATE INDEX I1 ON t1 (s1); +CREATE INDEX I2 ON t1 (s2); +SELECT s1, s2 FROM t1 WHERE s2 IN (SELECT s1 FROM t1); +s1 s2 +SELECT s1, s2 FROM t1 WHERE (s2, 10) IN (SELECT s1, 10 FROM t1); +s1 s2 +TRUNCATE t1; +INSERT INTO t1 VALUES (0x41,0x41); +SELECT * FROM t1 WHERE s1 = (SELECT s2 FROM t1); +s1 s2 +DROP TABLE t1; +CREATE TABLE t1 (a1 VARBINARY(2) NOT NULL DEFAULT '0', PRIMARY KEY (a1)); +CREATE TABLE t2 (a2 BINARY(2) default '0', INDEX (a2)); +CREATE TABLE t3 (a3 BINARY(2) default '0'); +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t2 VALUES (1),(2),(3); +INSERT INTO t3 VALUES (1),(2),(3); +SELECT LEFT(t2.a2, 1) FROM t2,t3 WHERE t3.a3=t2.a2; +LEFT(t2.a2, 1) +1 +2 +3 +SELECT t1.a1, t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) FROM t1; +a1 t1.a1 in (SELECT t2.a2 FROM t2,t3 WHERE t3.a3=t2.a2) +1 0 +2 0 +3 0 +4 0 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a1 BINARY(3) PRIMARY KEY, b1 VARBINARY(3)); +CREATE TABLE t2 (a2 VARBINARY(3) PRIMARY KEY); +CREATE TABLE t3 (a3 VARBINARY(3) PRIMARY KEY); +INSERT INTO t1 VALUES (1,10), (2,20), (3,30), (4,40); +INSERT INTO t2 VALUES (2), (3), (4), (5); +INSERT INTO t3 VALUES (10), (20), (30); +SELECT LEFT(t1.a1,1) FROM t1,t3 WHERE t1.b1=t3.a3; +LEFT(t1.a1,1) +1 +2 +3 +SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); +a2 +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); +INSERT INTO t1 VALUES ('a', 'aa'); +INSERT INTO t1 VALUES ('a', 'aaa'); +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE INDEX I1 ON t1 (a); +CREATE INDEX I2 ON t1 (b); +EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t1 index NULL I1 2 NULL 2 Using index +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); +a b +CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10)); +INSERT INTO t2 SELECT * FROM t1; +CREATE INDEX I1 ON t2 (a); +CREATE INDEX I2 ON t2 (b); +EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t2 index NULL I1 4 NULL 2 Using index +SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); +a b +EXPLAIN +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t1 index NULL I1 2 NULL 2 Using where; Using index +SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(a INT, b INT); +INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +SELECT a AS out_a, MIN(b) FROM t1 +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = out_a) +GROUP BY a; +ERROR 42S22: Unknown column 'out_a' in 'where clause' +EXPLAIN +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1_outer ALL NULL NULL NULL NULL 4 Using where; Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 4 Using where +SELECT a AS out_a, MIN(b) FROM t1 t1_outer +WHERE b > (SELECT MIN(b) FROM t1 WHERE a = t1_outer.a) +GROUP BY a; +out_a MIN(b) +1 2 +2 4 +DROP TABLE t1; +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(f11 int, f12 int); +create table t2(f21 int unsigned not null, f22 int, f23 varchar(10)); +insert into t1 values(1,1),(2,2), (3, 3); +insert into t2 +select -1 , (@a:=(A.a + 10 * (B.a + 10 * (C.a+10*D.a))))/5000 + 1, @a +from t0 A, t0 B, t0 C, t0 D; +set session sort_buffer_size= 33*1024; +select count(*) from t1 where f12 = +(select f22 from t2 where f22 = f12 order by f21 desc, f22, f23 limit 1); +count(*) +3 +drop table t0,t1,t2; +CREATE TABLE t4 ( +f7 varchar(32) collate utf8_bin NOT NULL default '', +f10 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f7) +); +INSERT INTO t4 VALUES(1,1), (2,null); +CREATE TABLE t2 ( +f4 varchar(32) collate utf8_bin NOT NULL default '', +f2 varchar(50) collate utf8_bin default NULL, +f3 varchar(10) collate utf8_bin default NULL, +PRIMARY KEY (f4), +UNIQUE KEY uk1 (f2) +); +INSERT INTO t2 VALUES(1,1,null), (2,2,null); +CREATE TABLE t1 ( +f8 varchar(32) collate utf8_bin NOT NULL default '', +f1 varchar(10) collate utf8_bin default NULL, +f9 varchar(32) collate utf8_bin default NULL, +PRIMARY KEY (f8) +); +INSERT INTO t1 VALUES (1,'P',1), (2,'P',1), (3,'R',2); +CREATE TABLE t3 ( +f6 varchar(32) collate utf8_bin NOT NULL default '', +f5 varchar(50) collate utf8_bin default NULL, +PRIMARY KEY (f6) +); +INSERT INTO t3 VALUES (1,null), (2,null); +SELECT +IF(t1.f1 = 'R', a1.f2, t2.f2) AS a4, +IF(t1.f1 = 'R', a1.f3, t2.f3) AS f3, +SUM( +IF( +(SELECT VPC.f2 +FROM t2 VPC, t4 a2, t2 a3 +WHERE +VPC.f4 = a2.f10 AND a3.f2 = a4 +LIMIT 1) IS NULL, +0, +t3.f5 +) +) AS a6 +FROM +t2, t3, t1 JOIN t2 a1 ON t1.f9 = a1.f4 +GROUP BY a4; +a4 f3 a6 +1 NULL NULL +2 NULL NULL +DROP TABLE t1, t2, t3, t4; +create table t1 (a float(5,4) zerofill); +create table t2 (a float(5,4),b float(2,0)); +select t1.a from t1 where +t1.a= (select b from t2 limit 1) and not +t1.a= (select a from t2 limit 1) ; +a +drop table t1, t2; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2); +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `materialized subselect`.`1`)))))) +EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `materialized subselect`.`1`)))))) +DROP TABLE t1; +# +# Bug#45061: Incorrectly market field caused wrong result. +# +CREATE TABLE `C` ( +`int_nokey` int(11) NOT NULL, +`int_key` int(11) NOT NULL, +KEY `int_key` (`int_key`) +); +INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4), +(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7), +(5,2), (1,8), (7,0), (0,9), (9,5); +SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +int_nokey int_key +9 9 +0 0 +5 5 +0 0 +EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where +DROP TABLE C; +# End of test for bug#45061. +# +# Bug #46749: Segfault in add_key_fields() with outer subquery level +# field references +# +CREATE TABLE t1 ( +a int, +b int, +UNIQUE (a), KEY (b) +); +INSERT INTO t1 VALUES (1,1), (2,1); +CREATE TABLE st1 like t1; +INSERT INTO st1 VALUES (1,1), (2,1); +CREATE TABLE st2 like t1; +INSERT INTO st2 VALUES (1,1), (2,1); +EXPLAIN +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +FROM t1 +WHERE a = 230; +MAX(b) (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b) +NULL 0 +DROP TABLE t1, st1, st2; +# +# Bug #48709: Assertion failed in sql_select.cc:11782: +# int join_read_key(JOIN_TAB*) +# +CREATE TABLE t1 (pk int PRIMARY KEY, int_key int); +INSERT INTO t1 VALUES (10,1), (14,1); +CREATE TABLE t2 (pk int PRIMARY KEY, int_key int); +INSERT INTO t2 VALUES (3,3), (5,NULL), (7,3); +# should have eq_ref for t1 +EXPLAIN +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +id select_type table type possible_keys key key_len ref rows Extra +x x outr ALL x x x x x x +x x t1 eq_ref x x x x x x +x x t2 index x x x x x x +# should not crash on debug binaries +SELECT * FROM t2 outr +WHERE outr.int_key NOT IN (SELECT t1.pk FROM t1, t2) +ORDER BY outr.pk; +pk int_key +3 3 +7 3 +DROP TABLE t1,t2; +End of 5.0 tests. +create table t_out (subcase char(3), +a1 char(2), b1 char(2), c1 char(2)); +create table t_in (a2 char(2), b2 char(2), c2 char(2)); +insert into t_out values ('A.1','2a', NULL, '2a'); +insert into t_out values ('A.3', '2a', NULL, '2a'); +insert into t_out values ('A.4', '2a', NULL, 'xx'); +insert into t_out values ('B.1', '2a', '2a', '2a'); +insert into t_out values ('B.2', '2a', '2a', '2a'); +insert into t_out values ('B.3', '3a', 'xx', '3a'); +insert into t_out values ('B.4', 'xx', '3a', '3a'); +insert into t_in values ('1a', '1a', '1a'); +insert into t_in values ('2a', '2a', '2a'); +insert into t_in values (NULL, '2a', '2a'); +insert into t_in values ('3a', NULL, '3a'); + +Test general IN semantics (not top-level) + +case A.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'A.1'; +subcase pred_in pred_not_in +A.1 0 1 +case A.2 - impossible +case A.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.3'; +subcase pred_in pred_not_in +A.3 NULL NULL +case A.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'A.4'; +subcase pred_in pred_not_in +A.4 0 1 +case B.1 +select subcase, +(a1, b1, c1) IN (select * from t_in where a2 = 'no_match') pred_in, +(a1, b1, c1) NOT IN (select * from t_in where a2 = 'no_match') pred_not_in +from t_out where subcase = 'B.1'; +subcase pred_in pred_not_in +B.1 0 1 +case B.2 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.2'; +subcase pred_in pred_not_in +B.2 1 0 +case B.3 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.3'; +subcase pred_in pred_not_in +B.3 NULL NULL +case B.4 +select subcase, +(a1, b1, c1) IN (select * from t_in) pred_in, +(a1, b1, c1) NOT IN (select * from t_in) pred_not_in +from t_out where subcase = 'B.4'; +subcase pred_in pred_not_in +B.4 0 1 + +Test IN as top-level predicate, and +as non-top level for cases A.3, B.3 (the only cases with NULL result). + +case A.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case A.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'A.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case A.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'A.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'A.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +case B.1 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) IN (select * from t_in where a1 = 'no_match'); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.1' and +(a1, b1, c1) NOT IN (select * from t_in where a1 = 'no_match'); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.1' and +NOT((a1, b1, c1) IN (select * from t_in where a1 = 'no_match')); +not_pred_in +T +case B.2 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) IN (select * from t_in); +pred_in +T +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.2' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.2' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +case B.3 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.3' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +F +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.3' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +F +select case when count(*) > 0 then 'N' else 'wrong result' end as pred_in from t_out +where subcase = 'B.3' and +((a1, b1, c1) IN (select * from t_in)) is NULL and +((a1, b1, c1) NOT IN (select * from t_in)) is NULL; +pred_in +N +case B.4 +select case when count(*) > 0 then 'T' else 'F' end as pred_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) IN (select * from t_in); +pred_in +F +select case when count(*) > 0 then 'T' else 'F' end as pred_not_in from t_out +where subcase = 'B.4' and +(a1, b1, c1) NOT IN (select * from t_in); +pred_not_in +T +select case when count(*) > 0 then 'T' else 'F' end as not_pred_in from t_out +where subcase = 'B.4' and +NOT((a1, b1, c1) IN (select * from t_in)); +not_pred_in +T +drop table t_out; +drop table t_in; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (2,22),(1,11),(2,22); +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +a +1 +2 +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +a +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +a +1 +2 +SET @@sql_mode='ansi'; +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 0 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 WHERE (SELECT COUNT(b) FROM DUAL) > 1 GROUP BY a; +ERROR HY000: Invalid use of group function +SELECT a FROM t1 t0 +WHERE (SELECT COUNT(t0.b) FROM t1 t WHERE t.b>20) GROUP BY a; +ERROR HY000: Invalid use of group function +SET @@sql_mode=default; +DROP TABLE t1; +CREATE TABLE t1 (s1 CHAR(1)); +INSERT INTO t1 VALUES ('a'); +SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1); +s1 +a +DROP TABLE t1; +CREATE TABLE t1(c INT, KEY(c)); +CREATE TABLE t2(a INT, b INT); +INSERT INTO t2 VALUES (1, 10), (2, NULL); +INSERT INTO t1 VALUES (1), (3); +SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10); +a b +DROP TABLE t1,t2; +CREATE TABLE t1(pk INT PRIMARY KEY, a INT, INDEX idx(a)); +INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20); +CREATE TABLE t2(pk INT PRIMARY KEY, a INT, b INT, INDEX idxa(a)); +INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100); +SELECT * FROM t1 +WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b); +pk a +1 10 +3 30 +2 20 +DROP TABLE t1,t2; +CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a), KEY b (b)); +INSERT INTO t1 VALUES (1,NULL), (9,NULL); +CREATE TABLE t2 ( +a INT, +b INT, +c INT, +d INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c,d), +KEY b_2 (b), +KEY c (c), +KEY d (d) +); +INSERT INTO t2 VALUES +(43, 2, 11 ,30), +(44, 2, 12 ,30), +(45, 1, 1 ,10000), +(46, 1, 2 ,10000), +(556,1, 32 ,10000); +CREATE TABLE t3 ( +a INT, +b INT, +c INT, +PRIMARY KEY (a), +UNIQUE KEY b (b,c), +KEY c (c), +KEY b_2 (b) +); +INSERT INTO t3 VALUES (1,1,1), (2,32,1); +explain +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t3 ref b,b_2 b 5 test.t1.a 1 Using index +2 DEPENDENT SUBQUERY t2 ref b,b_2,c b 10 test.t3.c,test.t1.a 1 Using where; Using index; Using filesort +SELECT t1.a, (SELECT 1 FROM t2 WHERE t2.b=t3.c AND t2.c=t1.a ORDER BY t2.d LIMIT 1) AS incorrect FROM t1, t3 WHERE t3.b=t1.a; +a incorrect +1 1 +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int, c int); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id) VALUES (1); +CREATE VIEW v1 AS +SELECT t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +UPDATE v1 SET c=1; +CREATE VIEW v2 (a,b) AS +SELECT t2.id, t2.c AS c FROM t1, t2 +WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +INSERT INTO v2(a,b) VALUES (2,2); +ERROR HY000: CHECK OPTION failed 'test.v2' +SELECT * FROM v1; +c +1 +1 +1 +1 +CREATE VIEW v3 AS +SELECT t2.c AS c FROM t2 +WHERE 1 IN (SELECT id FROM t1) WITH CHECK OPTION; +DELETE FROM v3; +DROP VIEW v1,v2,v3; +DROP TABLE t1,t2; +# +# BUG#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +# +# Bug#37822 Correlated subquery with IN and IS UNKNOWN provides wrong result +# +create table t1(id integer primary key, g integer, v integer, s char(1)); +create table t2(id integer primary key, g integer, v integer, s char(1)); +insert into t1 values +(10, 10, 10, 'l'), +(20, 20, 20, 'l'), +(40, 40, 40, 'l'), +(41, 40, null, 'l'), +(50, 50, 50, 'l'), +(51, 50, null, 'l'), +(60, 60, 60, 'l'), +(61, 60, null, 'l'), +(70, 70, 70, 'l'), +(90, 90, null, 'l'); +insert into t2 values +(10, 10, 10, 'r'), +(30, 30, 30, 'r'), +(50, 50, 50, 'r'), +(60, 60, 60, 'r'), +(61, 60, null, 'r'), +(70, 70, 70, 'r'), +(71, 70, null, 'r'), +(80, 80, 80, 'r'), +(81, 80, null, 'r'), +(100,100,null, 'r'); +select * +from t1 +where v in(select v +from t2 +where t1.g=t2.g) is unknown; +id g v s +51 50 NULL l +61 60 NULL l +drop table t1, t2; +CREATE TABLE t1 (a ENUM('rainbow')); +INSERT INTO t1 VALUES (),(),(),(),(); +SELECT 1 FROM t1 GROUP BY (SELECT 1 FROM t1 ORDER BY AVG(LAST_INSERT_ID())); +1 +1 +DROP TABLE t1; +CREATE TABLE t1 (a LONGBLOB); +INSERT INTO t1 SET a = 'aaaa'; +INSERT INTO t1 SET a = 'aaaa'; +SELECT 1 FROM t1 GROUP BY +(SELECT LAST_INSERT_ID() FROM t1 ORDER BY MIN(a) ASC LIMIT 1); +1 +1 +DROP TABLE t1; +set @@optimizer_switch=@save_optimizer_switch; +# +# Bug #49512 : subquery with aggregate function crash +# subselect_single_select_engine::exec() +CREATE TABLE t1(a INT); +INSERT INTO t1 VALUES(); +# should not crash +SELECT 1 FROM t1 WHERE a <> SOME +( +SELECT MAX((SELECT a FROM t1 LIMIT 1)) AS d +FROM t1,t1 a +); +1 +DROP TABLE t1; +# +# Bug #45989 take 2 : memory leak after explain encounters an +# error in the query +# +CREATE TABLE t1(a LONGTEXT); +INSERT INTO t1 VALUES (repeat('a',@@global.max_allowed_packet)); +INSERT INTO t1 VALUES (repeat('b',@@global.max_allowed_packet)); +EXPLAIN EXTENDED SELECT DISTINCT 1 FROM t1, +(SELECT DISTINCTROW a AS away FROM t1 GROUP BY a WITH ROLLUP) AS d1 +WHERE t1.a = d1.a; +ERROR 42S22: Unknown column 'd1.a' in 'where clause' +DROP TABLE t1; +End of 5.1 tests. +Set up test tables. +CREATE TABLE t1 ( +t1_id INT UNSIGNED, +PRIMARY KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t1 (t1_id) VALUES (1), (2), (3), (4), (5); +CREATE TABLE t2 SELECT * FROM t1; +CREATE TABLE t3 ( +t3_id INT UNSIGNED AUTO_INCREMENT, +t1_id INT UNSIGNED, +amount DECIMAL(16,2), +PRIMARY KEY(t3_id), +KEY(t1_id) +) Engine=MyISAM; +INSERT INTO t3 (t1_id, t3_id, amount) +VALUES (1, 1, 100.00), (2, 2, 200.00), (4, 4, 400.00); +This is the 'inner query' running by itself. +Produces correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query) +Produces correct results. +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +Now make t2.t1_id part of a key. +ALTER TABLE t2 ADD PRIMARY KEY(t1_id); +Same inner query by itself. +Still correct results. +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +SELECT * FROM (the same inner query), now with indexes on the LEFT JOIN +SELECT * FROM ( +SELECT +t1.t1_id, +IFNULL((SELECT SUM(amount) FROM t3 WHERE t3.t1_id=t1.t1_id), 0) AS total_amount +FROM +t1 +LEFT JOIN t2 ON t2.t1_id=t1.t1_id +GROUP BY +t1.t1_id +) AS t; +t1_id total_amount +1 100.00 +2 200.00 +3 0.00 +4 400.00 +5 0.00 +DROP TABLE t3; +DROP TABLE t2; +DROP TABLE t1; +# +# Bug #52711: Segfault when doing EXPLAIN SELECT with +# union...order by (select... where...) +# +CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a)); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (1),(2); +# Should not crash +EXPLAIN +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +# Should not crash +SELECT * FROM t2 UNION SELECT * FROM t2 +ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +DROP TABLE t1,t2; +# LP BUG#675248 - select->prep_where references on freed memory +CREATE TABLE t1 (a int, b int); +insert into t1 values (1,1),(0,0); +CREATE TABLE t2 (c int); +insert into t2 values (1),(2); +prepare stmt1 from "select sum(a),(select sum(c) from t2 where table1.b) as sub +from t1 as table1 group by sub"; +execute stmt1; +sum(a) sub +0 NULL +1 3 +deallocate prepare stmt1; +prepare stmt1 from "select sum(a),(select sum(c) from t2 having table1.b) as sub +from t1 as table1"; +execute stmt1; +sum(a) sub +1 3 +deallocate prepare stmt1; +drop table t1,t2; +# +# Bug LP#693935/#58727: Assertion failure with +# a single row subquery returning more than one row +# +create table t1 (a char(1) charset utf8); +insert into t1 values ('a'), ('b'); +create table t2 (a binary(1)); +insert into t2 values ('x'), ('y'); +select * from t2 where a=(select a from t1) and a='x'; +ERROR 21000: Subquery returns more than 1 row +drop table t1,t2; +End of 5.1 tests +# +# No BUG#, a case brought from 5.2's innodb_mysql_lock.test +# +create table t1 (i int not null primary key); +insert into t1 values (1),(2),(3),(4),(5); +create table t2 (j int not null primary key); +insert into t2 values (1),(2),(3),(4),(5); +create table t3 (k int not null primary key); +insert into t3 values (1),(2),(3); +create view v2 as select t2.j as j from t2 where t2.j in (select t1.i from t1); +select * from t3 where k in (select j from v2); +k +1 +2 +3 +drop table t1,t2,t3; +drop view v2; +# +# Bug#52068: Optimizer generates invalid semijoin materialization plan +# +drop table if exists ot1, ot2, it1, it2; +CREATE TABLE ot1(a INTEGER); +INSERT INTO ot1 VALUES(5), (8); +CREATE TABLE it2(a INTEGER); +INSERT INTO it2 VALUES(9), (5), (1), (8); +CREATE TABLE it3(a INTEGER); +INSERT INTO it3 VALUES(7), (1), (0), (5), (1), (4); +CREATE TABLE ot4(a INTEGER); +INSERT INTO ot4 VALUES(1), (3), (5), (7), (9), (7), (3), (1); +SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +a a +5 1 +8 1 +5 5 +8 5 +5 7 +8 7 +5 7 +8 7 +5 1 +8 1 +explain SELECT * FROM ot1,ot4 +WHERE (ot1.a,ot4.a) IN (SELECT it2.a,it3.a +FROM it2,it3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot1 ALL NULL NULL NULL NULL 2 +1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY it2 ALL NULL NULL NULL NULL 4 +2 SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +DROP TABLE IF EXISTS ot1, ot4, it2, it3; +# +# Bug#729039: NULL keys used to evaluate subquery +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (NULL), (1), (NULL), (2); +CREATE TABLE t2 (a int, INDEX idx(a)) ; +INSERT INTO t2 VALUES (NULL), (1), (NULL); +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX () WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 USE INDEX() WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +a +1 +EXPLAIN +SELECT * FROM t1 +WHERE EXISTS (SELECT a FROM t2 WHERE t2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where +2 DEPENDENT SUBQUERY t2 ref idx idx 5 test.t1.a 2 Using index +DROP TABLE t1,t2; +# +# BUG#752992: Wrong results for a subquery with 'semijoin=on' +# +CREATE TABLE t1 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t1 VALUES (11,0); +INSERT INTO t1 VALUES (12,5); +INSERT INTO t1 VALUES (15,0); +CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); +INSERT INTO t2 VALUES (11,1); +INSERT INTO t2 VALUES (12,2); +INSERT INTO t2 VALUES (15,4); +EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +2 SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index +2 SUBQUERY it index NULL PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join) +SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +pk i +11 0 +12 5 +15 0 +DROP table t1,t2; +# +# Bug#751350: crash with pushed condition for outer references when +# there should be none of such conditions +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (0,0),(0,0); +EXPLAIN +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort +SELECT b FROM t1 +WHERE ('0') IN ( SELECT a FROM t1 GROUP BY a ) +GROUP BY b; +b +0 +DROP TABLE t1; +# +# Bug #11765713 58705: +# OPTIMIZER LET ENGINE DEPEND ON UNINITIALIZED VALUES +# CREATED BY OPT_SUM_QUERY +# +CREATE TABLE t1(a INT NOT NULL, KEY (a)); +INSERT INTO t1 VALUES (0), (1); +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1) +); +ERROR 21000: Subquery returns more than 1 row +SELECT 1 as foo FROM t1 WHERE a < SOME +(SELECT a FROM t1 WHERE a <=> +(SELECT a FROM t1 where a is null) +); +foo +DROP TABLE t1; +set optimizer_switch=default; diff --git a/mysql-test/r/subselect_notembedded.result b/mysql-test/r/subselect_notembedded.result index 9ef8c492ee3..cbe5a44bbf8 100644 --- a/mysql-test/r/subselect_notembedded.result +++ b/mysql-test/r/subselect_notembedded.result @@ -1,6 +1,7 @@ purge master logs before (select adddate(current_timestamp(), interval -4 day)); ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'select adddate(current_timestamp(), interval -4 day))' at line 1 purge master logs before adddate(current_timestamp(), interval -4 day); +drop table if exists t1; create table t1(a int,b int,key(a),key(b)); insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5), (6,7),(7,4),(5,3); diff --git a/mysql-test/r/subselect_nulls.result b/mysql-test/r/subselect_nulls.result new file mode 100644 index 00000000000..1ae8c9f6237 --- /dev/null +++ b/mysql-test/r/subselect_nulls.result @@ -0,0 +1,114 @@ +drop table if exists x1; +drop table if exists x2; +create table x1(k int primary key, d1 int, d2 int); +create table x2(k int primary key, d1 int, d2 int); +insert into x1 values +(10, 10, 10), +(20, 20, 20), +(21, 20, null), +(30, null, 30), +(40, 40, 40); +insert into x2 values +(10, 10, 10), +(20, 20, 20), +(21, 20, null), +(30, null, 30); +select * +from x1 +where (d1, d2) in (select d1, d2 +from x2); +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where (d1, d2) in (select d1, d2 +from x2) is true; +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where (d1, d2) in (select d1, d2 +from x2) is false; +k d1 d2 +40 40 40 +select * +from x1 +where (d1, d2) in (select d1, d2 +from x2) is unknown; +k d1 d2 +21 20 NULL +30 NULL 30 +select * +from x1 +where d1 in (select d1 +from x2 +where x1.d2=x2.d2); +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where d1 in (select d1 +from x2 +where x1.d2=x2.d2) is true; +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where d1 in (select d1 +from x2 +where x1.d2=x2.d2) is false; +k d1 d2 +21 20 NULL +40 40 40 +select * +from x1 +where d1 in (select d1 +from x2 +where x1.d2=x2.d2) is unknown; +k d1 d2 +30 NULL 30 +select * +from x1 +where 1 in (select 1 +from x2 +where x1.d1=x2.d1 and x1.d2=x2.d2); +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where 1 in (select 1 +from x2 +where x1.d1=x2.d1 and x1.d2=x2.d2) is true; +k d1 d2 +10 10 10 +20 20 20 +select * +from x1 +where 1 in (select 1 +from x2 +where x1.d1=x2.d1 and x1.d2=x2.d2) is false; +k d1 d2 +21 20 NULL +30 NULL 30 +40 40 40 +select * +from x1 +where 1 in (select 1 +from x2 +where x1.d1=x2.d1 and x1.d2=x2.d2) is unknown; +k d1 d2 +select * +from x1 +where exists (select * +from x2 +where x1.d1=x2.d1 and x1.d2=x2.d2); +k d1 d2 +10 10 10 +20 20 20 +drop table x1; +drop table x2; diff --git a/mysql-test/r/subselect_partial_match.result b/mysql-test/r/subselect_partial_match.result new file mode 100644 index 00000000000..13f002235da --- /dev/null +++ b/mysql-test/r/subselect_partial_match.result @@ -0,0 +1,65 @@ +drop table if exists t1, t2; +# +# LP BUG#608744 +# +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off"; +create table t1 (a1 char(1), a2 char(1)); +insert into t1 values (NULL, 'b'); +create table t2 (b1 char(1), b2 char(2)); +insert into t2 values ('a','b'), ('c', 'd'); +select * from t1 where (a1, a2) NOT IN (select b1, b2 from t2); +a1 a2 +drop table t1,t2; +set @@optimizer_switch=@save_optimizer_switch; +# +# LP BUG#601156 +# +CREATE TABLE t1 (a1 int DEFAULT NULL, a2 int DEFAULT NULL); +INSERT INTO t1 VALUES (NULL,2); +INSERT INTO t1 VALUES (4,NULL); +CREATE TABLE t2 (b1 int DEFAULT NULL, b2 int DEFAULT NULL); +INSERT INTO t2 VALUES (6,NULL); +INSERT INTO t2 VALUES (NULL,0); +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on'; +EXPLAIN EXTENDED +SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 0 0.00 const row not found +2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using where +3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 select NULL AS `a1`,NULL AS `a2` from (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ()))))) `table1` +DROP TABLE t1, t2; +set @@optimizer_switch=@save_optimizer_switch; +# +# LP BUG#613009 Crash in Ordered_key::get_field_idx +# +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off'; +create table t1 (a1 char(3) DEFAULT NULL, a2 char(3) DEFAULT NULL); +insert into t1 values (NULL, 'a21'), (NULL, 'a22'); +explain select * from t1 where (a1, a2) not in (select a1, a2 from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 +select * from t1 where (a1, a2) not in (select a1, a2 from t1); +a1 a2 +drop table t1; +set @@optimizer_switch=@save_optimizer_switch; +# +# LP BUG#680058 void Ordered_key::add_key(rownum_t): +# Assertion `key_buff_elements && cur_key_idx < key_buff_elements' failed +# +create table t1 (f1 char(1), f2 char(1)); +insert into t1 values ('t', '0'), ('0', 't'); +create table t2 (f3 char(1), f4 char(1)); +insert into t2 values ('t', NULL), ('t', NULL), ('d', 'y'); +set @save_optimizer_switch=@@optimizer_switch; +SET @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,semijoin=off'; +select * from t1 where (f1, f2) not in (select * from t2); +f1 f2 +0 t +set @@optimizer_switch=@save_optimizer_switch; +drop table t1, t2; diff --git a/mysql-test/r/subselect_sj.result b/mysql-test/r/subselect_sj.result new file mode 100644 index 00000000000..1fc5955f493 --- /dev/null +++ b/mysql-test/r/subselect_sj.result @@ -0,0 +1,1243 @@ +drop table if exists t0, t1, t2, t3, t4, t10, t11, t12; +set @save_optimizer_switch=@@optimizer_switch; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(a int, b int); +insert into t1 values (0,0),(1,1),(2,2); +create table t2 as select * from t1; +create table t11(a int, b int); +create table t10 (pk int, a int, primary key(pk)); +insert into t10 select a,a from t0; +create table t12 like t10; +insert into t12 select * from t10; +Flattened because of dependency, t10=func(t1) +explain select * from t1 where a in (select pk from t10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +select * from t1 where a in (select pk from t10); +a b +0 0 +1 1 +2 2 +A confluent case of dependency +explain select * from t1 where a in (select a from t10 where pk=12); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select * from t1 where a in (select a from t10 where pk=12); +a b +explain select * from t1 where a in (select a from t10 where pk=9); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t10 const PRIMARY PRIMARY 4 const 1 +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +select * from t1 where a in (select a from t10 where pk=9); +a b +An empty table inside +explain select * from t1 where a in (select a from t11); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select * from t1 where a in (select a from t11); +a b +explain select * from t1 where a in (select pk from t10) and b in (select pk from t10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using index +select * from t1 where a in (select pk from t10) and b in (select pk from t10); +a b +0 0 +1 1 +2 2 +flattening a nested subquery +explain select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where +1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 Using index +select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12)); +a b +0 0 +1 1 +2 2 +flattening subquery w/ several tables +explain extended select * from t1 where a in (select t10.pk from t10, t12 where t12.pk=t10.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using where +1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`)) +subqueries within outer joins go into ON expr. +explAin extended +select * from t1 left join (t2 A, t2 B) on ( A.A= t1.A And B.A in (select pk from t10)); +id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +1 PRIMARY A ALL NULL NULL NULL NULL 3 100.00 Using where +1 PRIMARY B ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t10 unique_suBquery PRIMARY PRIMARY 4 func 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`A`.`A` AS `A`,`test`.`A`.`B` AS `B`,`test`.`B`.`A` AS `A`,`test`.`B`.`B` AS `B` from `test`.`t1` left join (`test`.`t2` `A` join `test`.`t2` `B`) on((<in_optimizer>(`test`.`B`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`B`.`A`) in t10 on PRIMARY))) And (`test`.`A`.`A` = `test`.`t1`.`A`))) where 1 +t2 should be wrapped into OJ-nest, so we have "t1 LJ (t2 J t10)" +explAin extended +select * from t1 left join t2 on (t2.A= t1.A And t2.A in (select pk from t10)); +id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +2 DEPENDENT SUBQUERY t10 unique_suBquery PRIMARY PRIMARY 4 func 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`t2`.`A` AS `A`,`test`.`t2`.`B` AS `B` from `test`.`t1` left join `test`.`t2` on((<in_optimizer>(`test`.`t2`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`t2`.`A`) in t10 on PRIMARY))) And (`test`.`t2`.`A` = `test`.`t1`.`A`))) where 1 +we shouldn't flatten if we're going to get a join of > MAX_TABLES. +explain select * from +t1 s00, t1 s01, t1 s02, t1 s03, t1 s04,t1 s05,t1 s06,t1 s07,t1 s08,t1 s09, +t1 s10, t1 s11, t1 s12, t1 s13, t1 s14,t1 s15,t1 s16,t1 s17,t1 s18,t1 s19, +t1 s20, t1 s21, t1 s22, t1 s23, t1 s24,t1 s25,t1 s26,t1 s27,t1 s28,t1 s29, +t1 s30, t1 s31, t1 s32, t1 s33, t1 s34,t1 s35,t1 s36,t1 s37,t1 s38,t1 s39, +t1 s40, t1 s41, t1 s42, t1 s43, t1 s44,t1 s45,t1 s46,t1 s47,t1 s48,t1 s49 +where +s00.a in ( +select m00.a from +t1 m00, t1 m01, t1 m02, t1 m03, t1 m04,t1 m05,t1 m06,t1 m07,t1 m08,t1 m09, +t1 m10, t1 m11, t1 m12, t1 m13, t1 m14,t1 m15,t1 m16,t1 m17,t1 m18,t1 m19 +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY s00 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY s01 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s02 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s03 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s04 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s05 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s06 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s07 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s08 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s09 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s10 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s11 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s12 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s13 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s14 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s15 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s16 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s17 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s18 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s19 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s20 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s21 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s22 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s23 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s24 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s25 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s26 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s27 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s28 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s29 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s30 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s31 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s32 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s33 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s34 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s35 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s36 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s37 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s38 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s39 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s40 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s41 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s42 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s43 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s44 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s45 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s46 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s47 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s48 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s49 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m00 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY m01 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m02 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m03 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m04 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m05 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m06 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m07 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m08 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m09 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m10 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m11 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m12 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m13 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m14 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m15 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m16 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m17 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m18 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m19 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +select * from +t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10)) +where t1.a < 5; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +prepare s1 from +' select * from + t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10)) + where t1.a < 5'; +execute s1; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +execute s1; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +insert into t1 select (A.a + 10 * B.a),1 from t0 A, t0 B; +explain extended select * from t1 where a in (select pk from t10 where pk<3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t10 range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ALL NULL NULL NULL NULL 103 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t10`.`pk`) and (`test`.`t10`.`pk` < 3)) +drop table t0, t1, t2; +drop table t10, t11, t12; + +Bug#37899: Wrongly checked optimization prerequisite caused failed +assertion. + +CREATE TABLE t1 ( +`pk` int(11), +`varchar_nokey` varchar(5) +); +INSERT INTO t1 VALUES +(1,'qk'),(2,'j'),(3,'aew'); +SELECT * +FROM t1 +WHERE varchar_nokey IN ( +SELECT +varchar_nokey +FROM +t1 +) XOR pk = 30; +pk varchar_nokey +1 qk +2 j +3 aew +drop table t1; +# +# BUG#41842: Semi-join materialization strategy crashes when the upper query has HAVING +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +int_nokey int(11) NOT NULL, +time_key time NOT NULL, +datetime_key datetime NOT NULL, +datetime_nokey datetime NOT NULL, +varchar_key varchar(1) NOT NULL, +varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY time_key (time_key), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t1 VALUES +(1,0, '00:16:10','2008-09-03 14:25:40','2008-09-03 14:25:40','h','h'), +(2,7, '00:00:00','2001-01-13 00:00:00','2001-01-13 00:00:00','',''), +(3,0, '00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'), +(4,2, '16:29:24','2000-10-16 01:39:08','2000-10-16 01:39:08','w','w'), +(5,1, '09:23:32','0000-00-00 00:00:00','0000-00-00 00:00:00','p','p'), +(6,3, '00:00:00','2007-12-02 00:00:00','2007-12-02 00:00:00','o','o'), +(7,3, '00:00:00','2008-09-11 00:00:00','2008-09-11 00:00:00','',''), +(8,0, '13:59:04','0000-00-00 00:00:00','0000-00-00 00:00:00','s','s'), +(9,7, '09:01:06','0000-00-00 00:00:00','0000-00-00 00:00:00','d','d'), +(10,5,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','n','n'), +(11,0,'21:06:46','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'), +(12,2,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','',''), +(13,6,'14:45:34','2003-07-28 02:34:08','2003-07-28 02:34:08','w','w'), +(14,1,'15:04:12','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'), +(15,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'), +(16,0,'15:55:23','2004-03-17 00:32:27','2004-03-17 00:32:27','p','p'), +(17,1,'16:30:00','2004-12-27 19:20:00','2004-12-27 19:20:00','d','d'), +(18,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','h','h'), +(19,0,'14:13:26','2008-11-09 05:53:48','2008-11-09 05:53:48','o','o'), +(20,0,'00:00:00','2009-10-11 06:58:04','2009-10-11 06:58:04','k','k'); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +int_nokey int(11) NOT NULL, +time_key time NOT NULL, +datetime_key datetime NOT NULL, +datetime_nokey datetime NOT NULL, +varchar_key varchar(1) NOT NULL, +varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY time_key (time_key), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(10,0,'19:39:13','0000-00-00 00:00:00','0000-00-00 00:00:00','g','g'), +(11,8,'03:43:53','0000-00-00 00:00:00','0000-00-00 00:00:00','b','b'); +SELECT OUTR.datetime_nokey AS X FROM t1 AS OUTR +WHERE +OUTR.varchar_nokey IN (SELECT +INNR . varchar_nokey AS Y +FROM t2 AS INNR +WHERE +INNR . datetime_key >= INNR . time_key OR +INNR . pk = INNR . int_nokey +) +AND OUTR . varchar_nokey <= 'w' +HAVING X > '2012-12-12'; +X +drop table t1, t2; +# +# Bug#45191: Incorrectly initialized semi-join led to a wrong result. +# +CREATE TABLE STAFF (EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), GRADE DECIMAL(4), CITY CHAR(15)); +CREATE TABLE PROJ (PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE WORKS (EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, HOURS DECIMAL(5)); +INSERT INTO STAFF VALUES ('E1','Alice',12,'Deale'); +INSERT INTO STAFF VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO STAFF VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO STAFF VALUES ('E4','Don',12,'Deale'); +INSERT INTO STAFF VALUES ('E5','Ed',13,'Akron'); +INSERT INTO PROJ VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO PROJ VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO PROJ VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO PROJ VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO PROJ VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO PROJ VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO WORKS VALUES ('E1','P1',40); +INSERT INTO WORKS VALUES ('E1','P2',20); +INSERT INTO WORKS VALUES ('E1','P3',80); +INSERT INTO WORKS VALUES ('E1','P4',20); +INSERT INTO WORKS VALUES ('E1','P5',12); +INSERT INTO WORKS VALUES ('E1','P6',12); +INSERT INTO WORKS VALUES ('E2','P1',40); +INSERT INTO WORKS VALUES ('E2','P2',80); +INSERT INTO WORKS VALUES ('E3','P2',20); +INSERT INTO WORKS VALUES ('E4','P2',20); +INSERT INTO WORKS VALUES ('E4','P4',40); +INSERT INTO WORKS VALUES ('E4','P5',80); +set optimizer_switch=@save_optimizer_switch; +set optimizer_switch='materialization=off'; +explain SELECT EMPNUM, EMPNAME +FROM STAFF +WHERE EMPNUM IN +(SELECT EMPNUM FROM WORKS +WHERE PNUM IN +(SELECT PNUM FROM PROJ)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY STAFF ALL NULL NULL NULL NULL 5 +1 PRIMARY PROJ ALL NULL NULL NULL NULL 6 +1 PRIMARY WORKS ALL NULL NULL NULL NULL 12 Using where; FirstMatch(STAFF) +SELECT EMPNUM, EMPNAME +FROM STAFF +WHERE EMPNUM IN +(SELECT EMPNUM FROM WORKS +WHERE PNUM IN +(SELECT PNUM FROM PROJ)); +EMPNUM EMPNAME +E1 Alice +E2 Betty +E3 Carmen +E4 Don +set optimizer_switch=@save_optimizer_switch; +drop table STAFF,WORKS,PROJ; +# End of bug#45191 +# +# Bug#46550 Azalea returning duplicate results for some IN subqueries +# w/ semijoin=on +# +DROP TABLE IF EXISTS t0, t1, t2; +CREATE TABLE t0 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t0 VALUES +(1,'m','m'), +(40,'h','h'), +(1,'r','r'), +(1,'h','h'), +(9,'x','x'), +(NULL,'q','q'), +(NULL,'k','k'), +(7,'l','l'), +(182,'k','k'), +(202,'a','a'), +(7,'x','x'), +(6,'j','j'), +(119,'z','z'), +(4,'d','d'), +(5,'h','h'), +(1,'u','u'), +(3,'q','q'), +(7,'a','a'), +(3,'e','e'), +(6,'l','l'); +CREATE TABLE t1 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t1 VALUES (7,NULL,NULL),(4,'x','x'); +CREATE TABLE t2 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t2 VALUES (123,NULL,NULL); +SELECT int_key +FROM t0 +WHERE varchar_nokey IN ( +SELECT t1 .varchar_key from t1 +); +int_key +9 +7 +SELECT t0.int_key +FROM t0 +WHERE t0.varchar_nokey IN ( +SELECT t1_1 .varchar_key +FROM t1 AS t1_1 JOIN t1 AS t1_2 ON t1_1 .int_key +); +int_key +9 +7 +SELECT t0.int_key +FROM t0, t2 +WHERE t0.varchar_nokey IN ( +SELECT t1_1 .varchar_key +FROM t1 AS t1_1 JOIN t1 AS t1_2 ON t1_1 .int_key +); +int_key +9 +7 +DROP TABLE t0, t1, t2; +# End of bug#46550 +# +# Bug #46744 Crash in optimize_semijoin_nests on empty view +# with limit and procedure. +# +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +DROP PROCEDURE IF EXISTS p1; +CREATE TABLE t1 ( f1 int ); +CREATE TABLE t2 ( f1 int ); +insert into t2 values (5), (7); +CREATE OR REPLACE VIEW v1 AS SELECT * FROM t1 LIMIT 2; +create procedure p1() +select COUNT(*) +FROM v1 WHERE f1 IN +(SELECT f1 FROM t2 WHERE f1 = ANY (SELECT f1 FROM v1)); +SET SESSION optimizer_switch = 'semijoin=on'; +CALL p1(); +COUNT(*) +0 +SET SESSION optimizer_switch = 'semijoin=off'; +CALL p1(); +COUNT(*) +0 +drop table t1, t2; +drop view v1; +drop procedure p1; +set SESSION optimizer_switch=@save_optimizer_switch; +# End of bug#46744 + +Bug#46797 "Crash in fix_semijoin_strategies_for_picked_join_order +with semijoin=on" + +CREATE TABLE t1 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +CREATE TABLE t2 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(NULL),(NULL),(NULL),(NULL),('a'),('a'),('a'),('b'),('b'),('b'),('b'),('c'), +('c'),('c'),('c'),('c'),('c'),('c'),('d'),('d'),('d'),('d'),('d'),('d'),('e'), +('e'),('e'),('e'),('e'),('e'),('f'),('f'),('f'),('g'),('g'),('h'),('h'),('h'), +('h'),('i'),('j'),('j'),('j'),('k'),('k'),('l'),('l'),('m'),('m'),('m'),('m'), +('n'),('n'),('n'),('o'),('o'),('o'),('p'),('p'),('p'),('q'),('q'),('q'),('r'), +('r'),('r'),('r'),('s'),('s'),('s'),('s'),('t'),('t'),('t'),('t'),('u'),('u'), +('u'),('u'),('v'),('v'),('v'),('v'),('w'),('w'),('w'),('w'),('w'),('w'),('x'), +('x'),('x'),('y'),('y'),('y'),('y'),('z'),('z'),('z'),('z'); +CREATE TABLE t3 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO t3 VALUES +(NULL),('c'),('d'),('e'),('f'),('h'),('j'),('k'),('k'),('m'),('m'),('m'), +('n'),('o'),('r'),('t'),('t'),('u'),('w'),('y'); +SELECT varchar_key FROM t3 +WHERE (SELECT varchar_key FROM t3 +WHERE (varchar_key,varchar_key) +IN (SELECT t1.varchar_key, t2 .varchar_key +FROM t1 RIGHT JOIN t2 ON t1.varchar_key +) +); +varchar_key +DROP TABLE t1, t2, t3; +# +# Bug#46556 Returning incorrect, empty results for some IN subqueries +# w/semijoin=on +# +CREATE TABLE t0 ( +pk INTEGER, +vkey VARCHAR(1), +vnokey VARCHAR(1), +PRIMARY KEY (pk), +KEY vkey(vkey) +); +INSERT INTO t0 +VALUES (1,'g','g'), (2,'v','v'), (3,'t','t'), (4,'u','u'), (5,'n','n'); +EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN +(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t0 ALL PRIMARY NULL NULL NULL 5 100.00 +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where +1 PRIMARY t2 ref vkey vkey 4 test.t1.vnokey 2 100.00 Using index; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t0`.`vkey` AS `vkey` from `test`.`t0` `t1` semi join (`test`.`t0` `t2`) join `test`.`t0` where ((`test`.`t2`.`vkey` = `test`.`t1`.`vnokey`) and (`test`.`t1`.`pk` = `test`.`t0`.`pk`)) +SELECT vkey FROM t0 WHERE pk IN +(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey); +vkey +g +v +t +u +n +DROP TABLE t0; +# End of bug#46556 + +Bug #48073 Subquery on char columns from view crashes Mysql + +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +CREATE TABLE t1 ( +city VARCHAR(50) NOT NULL, +country_id SMALLINT UNSIGNED NOT NULL +); +INSERT INTO t1 VALUES +('Batna',2), +('Bchar',2), +('Skikda',2), +('Tafuna',3), +('Algeria',2) ; +CREATE TABLE t2 ( +country_id SMALLINT UNSIGNED NOT NULL, +country VARCHAR(50) NOT NULL +); +INSERT INTO t2 VALUES +(2,'Algeria'), +(3,'American Samoa') ; +CREATE VIEW v1 AS +SELECT country_id, country +FROM t2 +WHERE LEFT(country,1) = "A" +; +SELECT city, country_id +FROM t1 +WHERE city IN ( +SELECT country +FROM t2 +WHERE LEFT(country, 1) = "A" +); +city country_id +Algeria 2 +SELECT city, country_id +FROM t1 +WHERE city IN ( +SELECT country +FROM v1 +); +city country_id +Algeria 2 +drop table t1, t2; +drop view v1; +# End of bug#48073 + +Bug#48834: Procedure with view + subquery + semijoin=on +crashes on second call. + +SET SESSION optimizer_switch ='semijoin=on'; +CREATE TABLE t1 ( t1field integer, primary key (t1field)); +CREATE TABLE t2 ( t2field integer, primary key (t2field)); +CREATE VIEW v1 AS +SELECT t1field as v1field +FROM t1 A +WHERE A.t1field IN (SELECT t1field FROM t2 ); +CREATE VIEW v2 AS +SELECT t2field as v2field +FROM t2 A +WHERE A.t2field IN (SELECT t2field FROM t2 ); +CREATE PROCEDURE p1 () +BEGIN +SELECT v1field +FROM v1 +WHERE v1field IN ( SELECT v2field as vf_inner FROM v2 ); +END| +INSERT INTO t1 VALUES (1),(2),(3); +INSERT INTO t2 VALUES (2),(3),(4); +CALL p1; +v1field +2 +3 +CALL p1; +v1field +2 +3 +DROP TABLE t1,t2; +DROP VIEW v1,v2; +DROP PROCEDURE p1; +set SESSION optimizer_switch=@save_optimizer_switch; +# End of BUG#48834 + +Bug#49097 subquery with view generates wrong result with +non-prepared statement + +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +CREATE TABLE t1 ( +city VARCHAR(50) NOT NULL, +country_id SMALLINT UNSIGNED NOT NULL +); +INSERT INTO t1 VALUES +('Batna',2), +('Bchar',2), +('Skikda',2), +('Tafuna',3), +('Algeria',2) ; +CREATE TABLE t2 ( +country_id SMALLINT UNSIGNED NOT NULL, +country VARCHAR(50) NOT NULL +); +INSERT INTO t2 VALUES +(2,'Algeria'), +(3,'XAmerican Samoa') ; +CREATE VIEW v1 AS +SELECT country_id, country +FROM t2 +WHERE LEFT(country,1) = "A" +; +SELECT city, country_id +FROM t1 +WHERE country_id IN ( +SELECT country_id +FROM t2 +WHERE LEFT(country,1) = "A" +); +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +SELECT city, country_id +FROM t1 +WHERE country_id IN ( +SELECT country_id +FROM v1 +); +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +PREPARE stmt FROM +" +SELECT city, country_id +FROM t1 +WHERE country_id IN ( + SELECT country_id + FROM v1 +); +"; +execute stmt; +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +deallocate prepare stmt; +drop table t1, t2; +drop view v1; +# End of Bug#49097 +# +# BUG#38075: Wrong result: rows matching a subquery with outer join not returned +# +DROP TABLE IF EXISTS ot1, it1, it2; +CREATE TABLE it2 ( +int_key int(11) NOT NULL, +datetime_key datetime NOT NULL, +KEY int_key (int_key), +KEY datetime_key (datetime_key) +); +INSERT INTO it2 VALUES +(5,'2002-04-10 14:25:30'), (0,'0000-00-00 00:00:00'), +(0,'2006-09-14 04:01:02'), (4,'0000-00-00 00:00:00'), +(8,'0000-00-00 00:00:00'), (5,'0000-00-00 00:00:00'), +(9,'0000-00-00 00:00:00'), (8,'2007-04-01 11:04:17'), +(1,'0000-00-00 00:00:00'), (7,'2009-01-12 00:00:00'), +(0,'2009-06-05 00:00:00'), (3,'2006-02-14 18:06:35'), +(5,'2006-02-21 07:08:16'), (0,'0000-00-00 00:00:00'), +(7,'0000-00-00 00:00:00'), (0,'0000-00-00 00:00:00'), +(0,'2007-02-13 00:00:00'), (1,'0000-00-00 00:00:00'), +(0,'0000-00-00 00:00:00'), (1,'2003-08-11 00:00:00'); +CREATE TABLE ot1 ( +int_nokey int(11) NOT NULL, +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO ot1 VALUES +(5,0), (3,0), (0,2), (3,0), (1,3), (0,0), (1,7), (7,0), (1,7), (0,7), +(0,9), (8,2), (4,4), (9,3), (0,9), (2,5), (0,5), (8,0), (5,8), (1,5); +CREATE TABLE it1 ( +int_nokey int(11) NOT NULL, +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO it1 VALUES +(9,5), (0,4); +SELECT int_key FROM ot1 +WHERE int_nokey IN (SELECT it2.int_key +FROM it1 LEFT JOIN it2 ON it2.datetime_key); +int_key +0 +0 +2 +0 +3 +0 +7 +0 +7 +7 +9 +2 +9 +5 +0 +8 +5 +EXPLAIN +SELECT int_key FROM ot1 +WHERE int_nokey IN (SELECT it2.int_key +FROM it1 LEFT JOIN it2 ON it2.datetime_key); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY it1 index NULL int_key 4 NULL 2 Using index; Start temporary +1 PRIMARY ot1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +1 PRIMARY it2 ALL NULL NULL NULL NULL 20 Using where; End temporary +DROP TABLE ot1, it1, it2; +# End of BUG#38075 +# +# BUG#31480: Incorrect result for nested subquery when executed via semi join +# +create table t1 (a int not null, b int not null); +create table t2 (c int not null, d int not null); +create table t3 (e int not null); +insert into t1 values (1,10); +insert into t1 values (2,10); +insert into t1 values (1,20); +insert into t1 values (2,20); +insert into t1 values (3,20); +insert into t1 values (2,30); +insert into t1 values (4,40); +insert into t2 values (2,10); +insert into t2 values (2,20); +insert into t2 values (4,10); +insert into t2 values (5,10); +insert into t2 values (3,20); +insert into t2 values (2,40); +insert into t3 values (10); +insert into t3 values (30); +insert into t3 values (10); +insert into t3 values (20); +explain extended +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Start temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where; End temporary; Using join buffer (flat, BNL join) +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))) +show warnings; +Level Code Message +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))) +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +a +2 +2 +3 +2 +drop table t1, t2, t3; +# +# Bug#48213 Materialized subselect crashes if using GEOMETRY type +# +CREATE TABLE t1 ( +pk int, +a varchar(1), +b varchar(4), +c tinyblob, +d blob, +e mediumblob, +f longblob, +g tinytext, +h text, +i mediumtext, +j longtext, +k geometry, +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff', 'ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii','iiii','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')); +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY subselect2 eq_ref unique_key unique_key 13 func 1 1.00 +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0); +pk +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`c` = `test`.`t1`.`c`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` = `test`.`t1`.`d`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0); +pk +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`e` = `test`.`t1`.`e`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`f` = `test`.`t1`.`f`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`g` = `test`.`t1`.`g`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`h` = `test`.`t1`.`h`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`i` = `test`.`t1`.`i`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`j` = `test`.`t1`.`j`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`k` = `test`.`t1`.`k`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0); +pk +1 +2 +DROP TABLE t1, t2; +# End of Bug#48213 +# +# Bug#49198 Wrong result for second call of procedure +# with view in subselect. +# +CREATE TABLE t1 (t1field integer, primary key (t1field)); +CREATE TABLE t2 (t2field integer, primary key (t2field)); +CREATE TABLE t3 (t3field integer, primary key (t3field)); +CREATE VIEW v2 AS SELECT * FROM t2; +CREATE VIEW v3 AS SELECT * FROM t3; +INSERT INTO t1 VALUES(1),(2); +INSERT INTO t2 VALUES(1),(2); +INSERT INTO t3 VALUES(1),(2); +PREPARE stmt FROM +" +SELECT t1field +FROM t1 +WHERE t1field IN (SELECT * FROM v2); +"; +EXECUTE stmt; +t1field +1 +2 +EXECUTE stmt; +t1field +1 +2 +PREPARE stmt FROM +" +EXPLAIN +SELECT t1field +FROM t1 +WHERE t1field IN (SELECT * FROM v2) + AND t1field IN (SELECT * FROM v3) +"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +DROP TABLE t1, t2, t3; +DROP VIEW v2, v3; +# End of Bug#49198 +# +# Bug#45174: Incorrectly applied equality propagation caused wrong +# result on a query with a materialized semi-join. +# +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`varchar_key` varchar(1) NOT NULL, +`varchar_nokey` varchar(1) NOT NULL, +PRIMARY KEY (`pk`), +KEY `varchar_key` (`varchar_key`) +); +INSERT INTO `t1` VALUES (11,'m','m'),(12,'j','j'),(13,'z','z'),(14,'a','a'),(15,'',''),(16,'e','e'),(17,'t','t'),(19,'b','b'),(20,'w','w'),(21,'m','m'),(23,'',''),(24,'w','w'),(26,'e','e'),(27,'e','e'),(28,'p','p'); +CREATE TABLE `t2` ( +`varchar_nokey` varchar(1) NOT NULL +); +INSERT INTO `t2` VALUES ('v'),('u'),('n'),('l'),('h'),('u'),('n'),('j'),('k'),('e'),('i'),('u'),('n'),('b'),('x'),(''),('q'),('u'); +EXPLAIN EXTENDED SELECT varchar_nokey +FROM t2 +WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( +SELECT `varchar_key` , `varchar_nokey` +FROM t1 +WHERE `varchar_nokey` < 'n' XOR `pk` ) ; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 +1 PRIMARY subselect2 eq_ref unique_key unique_key 8 func 1 1.00 +2 SUBQUERY t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`)) +SELECT varchar_nokey +FROM t2 +WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( +SELECT `varchar_key` , `varchar_nokey` +FROM t1 +WHERE `varchar_nokey` < 'n' XOR `pk` ) ; +varchar_nokey +DROP TABLE t1, t2; +# End of the test for bug#45174. +# +# BUG#43768: Prepared query with nested subqueries core dumps on second execution +# +create table t1 ( +id int(11) unsigned not null primary key auto_increment, +partner_id varchar(35) not null, +t1_status_id int(10) unsigned +); +insert into t1 values ("1", "partner1", "10"), ("2", "partner2", "10"), +("3", "partner3", "10"), ("4", "partner4", "10"); +create table t2 ( +id int(11) unsigned not null default '0', +t1_line_id int(11) unsigned not null default '0', +article_id varchar(20), +sequence int(11) not null default '0', +primary key (id,t1_line_id) +); +insert into t2 values ("1", "1", "sup", "0"), ("2", "1", "sup", "1"), +("2", "2", "sup", "2"), ("2", "3", "sup", "3"), +("2", "4", "imp", "4"), ("3", "1", "sup", "0"), +("4", "1", "sup", "0"); +create table t3 ( +id int(11) not null default '0', +preceeding_id int(11) not null default '0', +primary key (id,preceeding_id) +); +create table t4 ( +user_id varchar(50) not null, +article_id varchar(20) not null, +primary key (user_id,article_id) +); +insert into t4 values("nicke", "imp"); +prepare stmt from +'select t1.partner_id +from t1 +where + t1.id in ( + select pl_inner.id + from t2 as pl_inner + where pl_inner.article_id in ( + select t4.article_id from t4 + where t4.user_id = \'nicke\' + ) + )'; +execute stmt; +partner_id +partner2 +execute stmt; +partner_id +partner2 +drop table t1,t2,t3,t4; +# +# Bug#48623 Multiple subqueries are optimized incorrectly +# +CREATE TABLE t1(val VARCHAR(10)); +CREATE TABLE t2(val VARCHAR(10)); +CREATE TABLE t3(val VARCHAR(10)); +INSERT INTO t1 VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +INSERT INTO t2 VALUES('aaa'), ('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +INSERT INTO t3 VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +EXPLAIN +SELECT * +FROM t1 +WHERE t1.val IN (SELECT t2.val FROM t2 +WHERE t2.val LIKE 'a%' OR t2.val LIKE 'e%') +AND t1.val IN (SELECT t3.val FROM t3 +WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%'); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect3 eq_ref unique_key unique_key 14 func 1 +1 PRIMARY subselect2 eq_ref unique_key unique_key 14 func 1 +3 SUBQUERY t3 ALL NULL NULL NULL NULL 5 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +SELECT * +FROM t1 +WHERE t1.val IN (SELECT t2.val FROM t2 +WHERE t2.val LIKE 'a%' OR t2.val LIKE 'e%') +AND t1.val IN (SELECT t3.val FROM t3 +WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%'); +val +aaa +eee +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t3; +# End of Bug#48623 +# +# LPBUG#602574: RQG: sql_select.cc:5385: bool greedy_search(JOIN*, table_map, uint, +# uint): Assertion `join->best_read < +# +set @save_optimizer_switch=@@optimizer_switch; +set optimizer_switch='materialization=off'; +CREATE TABLE t1 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +CREATE TABLE t2 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(NULL),(NULL),(NULL),(NULL),('a'),('a'),('a'),('b'),('b'),('b'),('b'),('c'), +('c'),('c'),('c'),('c'),('c'),('c'),('d'),('d'),('d'),('d'),('d'),('d'),('e'), +('e'),('e'),('e'),('e'),('e'),('f'),('f'),('f'),('g'),('g'),('h'),('h'),('h'), +('h'),('i'),('j'),('j'),('j'),('k'),('k'),('l'),('l'),('m'),('m'),('m'),('m'), +('n'),('n'),('n'),('o'),('o'),('o'),('p'),('p'),('p'),('q'),('q'),('q'),('r'), +('r'),('r'),('r'),('s'),('s'),('s'),('s'),('t'),('t'),('t'),('t'),('u'),('u'), +('u'),('u'),('v'),('v'),('v'),('v'),('w'),('w'),('w'),('w'),('w'),('w'),('x'), +('x'),('x'),('y'),('y'),('y'),('y'),('z'),('z'),('z'),('z'); +CREATE TABLE t3 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO t3 VALUES +(NULL),('c'),('d'),('e'),('f'),('h'),('j'),('k'),('k'),('m'),('m'),('m'), +('n'),('o'),('r'),('t'),('t'),('u'),('w'),('y'); +SELECT varchar_key FROM t3 +WHERE (SELECT varchar_key FROM t3 +WHERE (varchar_key,varchar_key) +IN (SELECT t1.varchar_key, t2 .varchar_key +FROM t1 RIGHT JOIN t2 ON t1.varchar_key +) +); +varchar_key +set optimizer_switch=@save_optimizer_switch; +DROP TABLE t1, t2, t3; +# +# Bug#46692 "Crash occurring on queries with nested FROM subqueries +# using materialization." +# +CREATE TABLE t1 ( +pk INTEGER PRIMARY KEY, +int_key INTEGER, +KEY int_key(int_key) +); +INSERT INTO t1 VALUES (10,186),(11,NULL),(12,2),(13,3),(14,0),(15,133),(16,1); +CREATE TABLE t2 ( +pk INTEGER PRIMARY KEY, +int_key INTEGER, +KEY int_key(int_key) +); +INSERT INTO t2 VALUES (1,7),(2,2); +SELECT * FROM t1 WHERE (140, 4) IN +(SELECT t2.int_key, t2 .pk FROM t2 STRAIGHT_JOIN t1 ON t2.int_key); +pk int_key +DROP TABLE t1, t2; +# +# Bug#42353 "SELECT ... WHERE oe IN (SELECT w/ LEFT JOIN) query +# causes crash." +# +CREATE TABLE t1 ( +pk INTEGER PRIMARY KEY, +int_nokey INTEGER, +int_key INTEGER, +date_key DATE, +datetime_nokey DATETIME, +varchar_nokey VARCHAR(1) +); +CREATE TABLE t2 ( +date_nokey DATE +); +CREATE TABLE t3 ( +pk INTEGER PRIMARY KEY, +int_nokey INTEGER, +date_key date, +varchar_key VARCHAR(1), +varchar_nokey VARCHAR(1), +KEY date_key (date_key) +); +SELECT date_key FROM t1 +WHERE (int_key, int_nokey) +IN (SELECT t3.int_nokey, t3.pk +FROM t2 LEFT JOIN t3 ON (t2.date_nokey < t3.date_key) +WHERE t3.varchar_key <= t3.varchar_nokey OR t3.int_nokey <= t3.pk +) +AND (varchar_nokey <> 'f' OR NOT int_key < 7); +date_key +# +# Bug#45933 "Crash in optimize_semijoin_nests on JOIN in subquery +# + AND in outer query". +# +INSERT INTO t1 VALUES (10,7,5,'2009-06-16','2002-04-10 14:25:30','w'), +(11,7,0,'0000-00-00','0000-00-00 00:00:00','s'), +(12,4,0,'2003-07-14','2006-09-14 04:01:02','y'), +(13,0,4,'2002-07-25','0000-00-00 00:00:00','c'), +(14,1,8,'2007-07-03','0000-00-00 00:00:00','q'), +(15,6,5,'2001-11-12','0000-00-00 00:00:00',''), +(16,2,9,'0000-00-00','0000-00-00 00:00:00','j'), +(29,9,1,'0000-00-00','2003-08-11 00:00:00','m'); +INSERT INTO t3 VALUES (1,9,'0000-00-00','b','b'), +(2,2,'2002-09-17','h','h'); +SELECT t1.varchar_nokey FROM t1 JOIN t3 ON t1.datetime_nokey +WHERE t1.varchar_nokey +IN (SELECT varchar_nokey FROM t1 +WHERE (pk) +IN (SELECT t3.int_nokey +FROM t3 LEFT JOIN t1 ON t1.varchar_nokey +WHERE t3.date_key BETWEEN '2008-06-07' AND '2006-06-26' + ) +); +varchar_nokey +DROP TABLE t1, t2, t3; +# +# Bug#45219 "Crash on SELECT DISTINCT query containing a +# LEFT JOIN in subquery" +# +CREATE TABLE t1 ( +pk INTEGER NOT NULL, +int_nokey INTEGER NOT NULL, +datetime_key DATETIME NOT NULL, +varchar_key VARCHAR(1) NOT NULL, +PRIMARY KEY (pk), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t1 VALUES +(1,9,'0000-00-00 00:00:00','p'),(2,0,'2002-02-09 07:38:13','v'), +(3,8,'2001-05-03 12:08:14','t'),(4,3,'0000-00-00 00:00:00','u'), +(5,7,'2009-07-28 03:43:30','n'),(6,0,'2009-08-04 00:00:00','l'), +(7,1,'0000-00-00 00:00:00','h'),(8,9,'0000-00-00 00:00:00','u'), +(9,0,'2005-08-02 17:16:54','n'),(10,9,'2002-12-21 00:00:00','j'), +(11,0,'2005-08-15 12:37:35','k'),(12,5,'0000-00-00 00:00:00','e'), +(13,0,'2006-03-10 00:00:00','i'),(14,8,'2005-05-16 11:02:36','u'), +(15,8,'2008-11-02 00:00:00','n'),(16,5,'2006-03-15 00:00:00','b'), +(17,1,'0000-00-00 00:00:00','x'),(18,7,'0000-00-00 00:00:00',''), +(19,0,'2008-12-17 20:15:40','q'),(20,9,'0000-00-00 00:00:00','u'); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES +(10,0,'2006-07-07 07:26:28','q'),(11,5,'2002-09-23 00:00:00','m'), +(12,7,'0000-00-00 00:00:00','j'),(13,1,'2006-06-07 00:00:00','z'), +(14,8,'2000-09-16 12:15:34','a'),(15,2,'2007-08-05 15:47:52',''), +(16,1,'0000-00-00 00:00:00','e'),(17,8,'2005-12-02 19:34:26','t'), +(18,5,'0000-00-00 00:00:00','q'),(19,4,'0000-00-00 00:00:00','b'), +(20,5,'2007-12-28 00:00:00','w'),(21,3,'2004-08-02 11:48:43','m'), +(22,0,'0000-00-00 00:00:00','x'),(23,8,'2004-04-19 12:18:43',''), +(24,0,'2009-04-27 00:00:00','w'),(25,4,'2006-10-20 14:52:15','x'), +(26,0,'0000-00-00 00:00:00','e'),(27,0,'2002-03-22 11:48:37','e'), +(28,2,'0000-00-00 00:00:00','p'),(29,0,'2001-01-04 03:55:07','x'); +CREATE TABLE t3 LIKE t1; +INSERT INTO t3 VALUES +(10,8,'2007-08-19 08:08:38','i'),(11,0,'2000-05-21 03:51:51',''); +SELECT DISTINCT datetime_key FROM t1 +WHERE (int_nokey, pk) +IN (SELECT t3.pk, t3.pk FROM t2 LEFT JOIN t3 ON t3.varchar_key) +AND pk = 9; +datetime_key +DROP TABLE t1, t2, t3; +set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/subselect_sj2.result b/mysql-test/r/subselect_sj2.result new file mode 100644 index 00000000000..56c0f45ea1d --- /dev/null +++ b/mysql-test/r/subselect_sj2.result @@ -0,0 +1,726 @@ +drop table if exists t0, t1, t2, t3; +drop view if exists v1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 ( +a int, +b int +); +insert into t1 values (1,1),(1,1),(2,2); +create table t2 ( +a int, +b int, +key(b) +); +insert into t2 select a, a/2 from t0; +select * from t1; +a b +1 1 +1 1 +2 2 +select * from t2; +a b +0 0 +1 1 +2 1 +3 2 +4 2 +5 3 +6 3 +7 4 +8 4 +9 5 +explain select * from t2 where b in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 3 +1 PRIMARY t2 ref b b 5 test.t1.a 2 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where +select * from t2 where b in (select a from t1); +a b +1 1 +2 1 +3 2 +4 2 +create table t3 ( +a int, +b int, +key(b), +pk1 char(200), pk2 char(200), pk3 char(200), +primary key(pk1, pk2, pk3) +) engine=innodb; +insert into t3 select a,a, a,a,a from t0; +explain select * from t3 where b in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL b NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 +select * from t3 where b in (select a from t1); +a b pk1 pk2 pk3 +1 1 1 1 1 +2 2 2 2 2 +set @save_max_heap_table_size= @@max_heap_table_size; +set max_heap_table_size=16384; +set @save_join_buffer_size = @@join_buffer_size; +set join_buffer_size= 8000; +drop table t3; +create table t3 ( +a int, +b int, +key(b), +pk1 char(200), pk2 char(200), +primary key(pk1, pk2) +) engine=innodb; +insert into t3 select +A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a +from t0 A, t0 B where B.a <5; +explain select * from t3 where b in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref b b 5 test.t0.a 1 +2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where +set @save_ecp= @@engine_condition_pushdown; +set engine_condition_pushdown=0; +select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5); +a b pk1 pk2 +0 0 0 0 +1 1 1 1 +2 2 2 2 +3 3 3 3 +4 4 4 4 +5 5 5 5 +6 6 6 6 +7 7 7 7 +8 8 8 8 +9 9 9 9 +10 10 10 10 +11 11 11 11 +12 12 12 12 +13 13 13 13 +set engine_condition_pushdown=@save_ecp; +set join_buffer_size= @save_join_buffer_size; +set max_heap_table_size= @save_max_heap_table_size; +explain select * from t1 where a in (select b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t2 index b b 5 NULL 10 Using index +select * from t1; +a b +1 1 +1 1 +2 2 +select * from t1 where a in (select b from t2); +a b +1 1 +1 1 +2 2 +drop table t1, t2, t3; +set @save_join_buffer_size = @@join_buffer_size; +set join_buffer_size= 8000; +create table t1 (a int, filler1 binary(200), filler2 binary(200)); +insert into t1 select a, 'filler123456', 'filler123456' from t0; +insert into t1 select a+10, 'filler123456', 'filler123456' from t0; +create table t2 as select * from t1; +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +insert into t1 values (2, 'duplicate ok', 'duplicate ok'); +insert into t1 values (18, 'duplicate ok', 'duplicate ok'); +insert into t2 values (3, 'duplicate ok', 'duplicate ok'); +insert into t2 values (19, 'duplicate ok', 'duplicate ok'); +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 +1 PRIMARY ot ALL NULL NULL NULL NULL 32 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY it ALL NULL NULL NULL NULL 22 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +a mid(filler1, 1,10) Z +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +2 duplicate 1 +18 duplicate 1 +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot ALL NULL NULL NULL NULL 22 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY it ALL NULL NULL NULL NULL 32 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +a mid(filler1, 1,10) length(filler1)=length(filler2) +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +3 duplicate 1 +19 duplicate 1 +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 +1 PRIMARY ot ALL NULL NULL NULL NULL 52 Using where; Using join buffer (flat, BNL join) +2 SUBQUERY it ALL NULL NULL NULL NULL 22 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +a mid(filler1, 1,10) Z +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +2 duplicate 1 +18 duplicate 1 +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot ALL NULL NULL NULL NULL 22 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY it ALL NULL NULL NULL NULL 52 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +a mid(filler1, 1,10) length(filler1)=length(filler2) +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +3 duplicate 1 +19 duplicate 1 +drop table t1, t2; +create table t1 (a int, b int, key(a)); +create table t2 (a int, b int, key(a)); +create table t3 (a int, b int, key(a)); +insert into t1 select a,a from t0; +insert into t2 select a,a from t0; +insert into t3 select a,a from t0; +t2 and t3 must be use 'ref', not 'ALL': +explain select * +from t0 where a in +(select t2.a+t3.a from t1 left join (t2 join t3) on t2.a=t1.a and t3.a=t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 10 Start temporary +1 PRIMARY t1 index NULL a 5 NULL 10 Using index; Using join buffer (flat, BNL join) +1 PRIMARY t2 ref a a 5 test.t1.a 1 Using where; Using index +1 PRIMARY t3 ref a a 5 test.t1.a 1 Using where; Using index; End temporary +drop table t0, t1,t2,t3; +CREATE TABLE t1 ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE t2 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name), +INDEX (Population) +); +CREATE TABLE t3 ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +EXPLAIN +SELECT Name FROM t2 +WHERE t2.Code IN (SELECT Country FROM t1 WHERE Population > 5000000) +AND +t2.Code IN (SELECT Country FROM t3 +WHERE Language='English' AND Percentage > 10 AND +t2.Population > 100000); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Rowid-ordered scan +1 PRIMARY t3 eq_ref PRIMARY,Percentage PRIMARY 33 test.t1.Country,const 1 Using index condition; Using where +1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t1.Country 1 Using where +DROP TABLE t1,t2,t3; +CREATE TABLE t1 ( +Code char(3) NOT NULL DEFAULT '', +Name char(52) NOT NULL DEFAULT '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL DEFAULT 'Asia', +Region char(26) NOT NULL DEFAULT '', +SurfaceArea float(10,2) NOT NULL DEFAULT '0.00', +IndepYear smallint(6) DEFAULT NULL, +Population int(11) NOT NULL DEFAULT '0', +LifeExpectancy float(3,1) DEFAULT NULL, +GNP float(10,2) DEFAULT NULL, +GNPOld float(10,2) DEFAULT NULL, +LocalName char(45) NOT NULL DEFAULT '', +GovernmentForm char(45) NOT NULL DEFAULT '', +HeadOfState char(60) DEFAULT NULL, +Capital int(11) DEFAULT NULL, +Code2 char(2) NOT NULL DEFAULT '', +PRIMARY KEY (Code) +); +CREATE TABLE t2 ( +ID int(11) NOT NULL AUTO_INCREMENT, +Name char(35) NOT NULL DEFAULT '', +CountryCode char(3) NOT NULL DEFAULT '', +District char(20) NOT NULL DEFAULT '', +Population int(11) NOT NULL DEFAULT '0', +PRIMARY KEY (ID), +KEY CountryCode (CountryCode) +); +Fill the table with test data +This must not use LooseScan: +EXPLAIN SELECT Name FROM t1 +WHERE t1.Code IN ( +SELECT t2.CountryCode FROM t2 WHERE Population > 5000000); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 31 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL CountryCode NULL NULL NULL 545 Using where +SELECT Name FROM t1 +WHERE t1.Code IN ( +SELECT t2.CountryCode FROM t2 WHERE Population > 5000000); +Name +Austria +Canada +China +Czech Republic +drop table t1, t2; +CREATE TABLE t1(a INT); +CREATE TABLE t2(c INT); +CREATE PROCEDURE p1(v1 int) +BEGIN +SELECT 1 FROM t1 WHERE a = v1 AND a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p2(v1 int) +BEGIN +SELECT 1 FROM t1 WHERE a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p3(v1 int) +BEGIN +SELECT 1 +FROM +t1 t01,t1 t02,t1 t03,t1 t04,t1 t05,t1 t06,t1 t07,t1 t08, +t1 t09,t1 t10,t1 t11,t1 t12,t1 t13,t1 t14,t1 t15,t1 t16, +t1 t17,t1 t18,t1 t19,t1 t20,t1 t21,t1 t22,t1 t23,t1 t24, +t1 t25,t1 t26,t1 t27,t1 t28,t1 t29,t1 t30,t1 t31,t1 t32, +t1 t33,t1 t34,t1 t35,t1 t36,t1 t37,t1 t38,t1 t39,t1 t40, +t1 t41,t1 t42,t1 t43,t1 t44,t1 t45,t1 t46,t1 t47,t1 t48, +t1 t49,t1 t50,t1 t51,t1 t52,t1 t53,t1 t54,t1 t55,t1 t56, +t1 t57,t1 t58,t1 t59,t1 t60 +WHERE t01.a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p4(v1 int) +BEGIN +SELECT 1 +FROM +t1 t01,t1 t02,t1 t03,t1 t04,t1 t05,t1 t06,t1 t07,t1 t08, +t1 t09,t1 t10,t1 t11,t1 t12,t1 t13,t1 t14,t1 t15,t1 t16, +t1 t17,t1 t18,t1 t19,t1 t20,t1 t21,t1 t22,t1 t23,t1 t24, +t1 t25,t1 t26,t1 t27,t1 t28,t1 t29,t1 t30,t1 t31,t1 t32, +t1 t33,t1 t34,t1 t35,t1 t36,t1 t37,t1 t38,t1 t39,t1 t40, +t1 t41,t1 t42,t1 t43,t1 t44,t1 t45,t1 t46,t1 t47,t1 t48, +t1 t49,t1 t50,t1 t51,t1 t52,t1 t53,t1 t54,t1 t55,t1 t56, +t1 t57,t1 t58,t1 t59,t1 t60 +WHERE t01.a = v1 AND t01.a IN (SELECT c FROM t2); +END +// +CALL p1(1); +1 +CALL p2(1); +1 +CALL p3(1); +1 +CALL p4(1); +1 +DROP TABLE t1, t2; +DROP PROCEDURE p1; +DROP PROCEDURE p2; +DROP PROCEDURE p3; +DROP PROCEDURE p4; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4); +create table t1 (a int, b int, key(a)); +insert into t1 select a,a from t0; +create table t2 (a int, b int, primary key(a)); +insert into t2 select * from t1; +Table t2, unlike table t1, should be displayed as pulled out +explain extended select * from t0 +where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and +t1.b=t2.b); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where +1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Start temporary +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary +Warnings: +Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where ((`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t1`.`a` = `test`.`t0`.`a`) and (`test`.`t2`.`a` = `test`.`t0`.`a`)) +update t1 set a=3, b=11 where a=4; +update t2 set b=11 where a=3; +select * from t0 where t0.a in +(select t1.a from t1, t2 where t2.a=t0.a and t1.b=t2.b); +a +0 +1 +2 +3 +drop table t0, t1, t2; +CREATE TABLE t1 ( +id int(11) NOT NULL, +PRIMARY KEY (id)); +CREATE TABLE t2 ( +id int(11) NOT NULL, +fid int(11) NOT NULL, +PRIMARY KEY (id)); +insert into t1 values(1); +insert into t2 values(1,7503),(2,1); +explain select count(*) +from t1 +where fid IN (select fid from t2 where (id between 7502 and 8420) order by fid ); +ERROR 42S22: Unknown column 'fid' in 'IN/ALL/ANY subquery' +drop table t1, t2; +create table t1 (a int, b int, key (a), key (b)); +insert into t1 values (2,4),(2,4),(2,4); +select t1.a from t1 +where +t1.a in (select 1 from t1 where t1.a in (select 1 from t1) group by t1.a); +a +drop table t1; +create table t1(a int,b int,key(a),key(b)); +insert into t1 values (1,1),(2,2),(3,3); +select 1 from t1 +where t1.a not in (select 1 from t1 +where t1.a in (select 1 from t1) +group by t1.b); +1 +1 +1 +drop table t1; +CREATE TABLE t1 +(EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), +GRADE DECIMAL(4), +CITY CHAR(15)); +CREATE TABLE t2 +(PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), +PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE t3 +(EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, +HOURS DECIMAL(5)); +INSERT INTO t1 VALUES ('E1','Alice',12,'Deale'); +INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO t1 VALUES ('E4','Don',12,'Deale'); +INSERT INTO t1 VALUES ('E5','Ed',13,'Akron'); +INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO t3 VALUES ('E1','P1',40); +INSERT INTO t3 VALUES ('E1','P2',20); +INSERT INTO t3 VALUES ('E1','P3',80); +INSERT INTO t3 VALUES ('E1','P4',20); +INSERT INTO t3 VALUES ('E1','P5',12); +INSERT INTO t3 VALUES ('E1','P6',12); +INSERT INTO t3 VALUES ('E2','P1',40); +INSERT INTO t3 VALUES ('E2','P2',80); +INSERT INTO t3 VALUES ('E3','P2',20); +INSERT INTO t3 VALUES ('E4','P2',20); +INSERT INTO t3 VALUES ('E4','P4',40); +INSERT INTO t3 VALUES ('E4','P5',80); +SELECT * FROM t1; +EMPNUM EMPNAME GRADE CITY +E1 Alice 12 Deale +E2 Betty 10 Vienna +E3 Carmen 13 Vienna +E4 Don 12 Deale +E5 Ed 13 Akron +CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM); +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP INDEX t1_IDX ON t1; +CREATE INDEX t1_IDX ON t1(EMPNUM); +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP INDEX t1_IDX ON t1; +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (f1 INT NOT NULL); +CREATE VIEW v1 (a) AS SELECT f1 IN (SELECT f1 FROM t1) FROM t1; +SELECT * FROM v1; +a +drop view v1; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(a int, b int); +insert into t1 values (0,0),(1,1),(2,2); +create table t2 as select * from t1; +create table t3 (pk int, a int, primary key(pk)); +insert into t3 select a,a from t0; +explain +select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY PRIMARY 4 func 1 Using index +drop table t0, t1, t2, t3; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a char(200), b char(200), c char(200), primary key (a,b,c)) engine=innodb; +insert into t2 select concat(a, repeat('X',198)),repeat('B',200),repeat('B',200) from t1; +insert into t2 select concat(a, repeat('Y',198)),repeat('B',200),repeat('B',200) from t1; +alter table t2 add filler1 int; +insert into t1 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; +set @save_join_buffer_size=@@join_buffer_size; +set join_buffer_size=1; +select * from t2 where filler1 in ( select a from t1); +a b c filler1 +set join_buffer_size=default; +drop table t1, t2; +create table t1 (a int not null); +drop procedure if exists p1; +CREATE PROCEDURE p1() +BEGIN +DECLARE EXIT HANDLER FOR SQLEXCEPTION select a from t1; +prepare s1 from ' + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( select a from t1) + )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))'; +execute s1; +END; +| +call p1(); +a +drop procedure p1; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int) as select A.a + 10 *(B.a + 10*C.a) as a from t0 A, t0 B, t0 C; +create table t2 (id int, a int, primary key(id), key(a)) as select a as id, a as a from t1; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL DEFAULT '0', + `a` int(11) DEFAULT NULL, + PRIMARY KEY (`id`), + KEY `a` (`a`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +set @a=0; +create table t3 as select * from t2 limit 0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +alter table t3 add primary key(id), add key(a); +The following must use loose index scan over t3, key a: +explain select count(a) from t2 where a in ( SELECT a FROM t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 index a a 5 NULL 1000 Using index +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t3 index a a 5 NULL 30000 Using index +select count(a) from t2 where a in ( SELECT a FROM t3); +count(a) +1000 +drop table t0,t1,t2,t3; + +BUG#42740: crash in optimize_semijoin_nests + +create table t1 (c6 timestamp,key (c6)) engine=innodb; +create table t2 (c2 double) engine=innodb; +explain select 1 from t2 where c2 = any (select log10(null) from t1 where c6 <null) ; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t1, t2; +# +# BUG#42742: crash in setup_sj_materialization, Copy_field::set +# +create table t3 ( c1 year) engine=innodb; +insert into t3 values (2135),(2142); +create table t2 (c1 tinytext,c2 text,c6 timestamp) engine=innodb; +# The following must not crash, EXPLAIN should show one SJ strategy, not a mix: +explain select 1 from t2 where +c2 in (select 1 from t3, t2) and +c1 in (select convert(c6,char(1)) from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2) +drop table t2, t3; diff --git a/mysql-test/r/subselect_sj2_jcl6.result b/mysql-test/r/subselect_sj2_jcl6.result new file mode 100644 index 00000000000..31da487158e --- /dev/null +++ b/mysql-test/r/subselect_sj2_jcl6.result @@ -0,0 +1,740 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +drop table if exists t0, t1, t2, t3; +drop view if exists v1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 ( +a int, +b int +); +insert into t1 values (1,1),(1,1),(2,2); +create table t2 ( +a int, +b int, +key(b) +); +insert into t2 select a, a/2 from t0; +select * from t1; +a b +1 1 +1 1 +2 2 +select * from t2; +a b +0 0 +1 1 +2 1 +3 2 +4 2 +5 3 +6 3 +7 4 +8 4 +9 5 +explain select * from t2 where b in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 3 +1 PRIMARY t2 ref b b 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where +select * from t2 where b in (select a from t1); +a b +1 1 +2 1 +3 2 +4 2 +create table t3 ( +a int, +b int, +key(b), +pk1 char(200), pk2 char(200), pk3 char(200), +primary key(pk1, pk2, pk3) +) engine=innodb; +insert into t3 select a,a, a,a,a from t0; +explain select * from t3 where b in (select a from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL b NULL NULL NULL 10 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 +select * from t3 where b in (select a from t1); +a b pk1 pk2 pk3 +1 1 1 1 1 +2 2 2 2 2 +set @save_max_heap_table_size= @@max_heap_table_size; +set max_heap_table_size=16384; +set @save_join_buffer_size = @@join_buffer_size; +set join_buffer_size= 8000; +drop table t3; +create table t3 ( +a int, +b int, +key(b), +pk1 char(200), pk2 char(200), +primary key(pk1, pk2) +) engine=innodb; +insert into t3 select +A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a +from t0 A, t0 B where B.a <5; +explain select * from t3 where b in (select a from t0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10 +1 PRIMARY t3 ref b b 5 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where +set @save_ecp= @@engine_condition_pushdown; +set engine_condition_pushdown=0; +select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5); +a b pk1 pk2 +0 0 0 0 +1 1 1 1 +2 2 2 2 +3 3 3 3 +4 4 4 4 +5 5 5 5 +6 6 6 6 +7 7 7 7 +8 8 8 8 +9 9 9 9 +10 10 10 10 +11 11 11 11 +12 12 12 12 +13 13 13 13 +set engine_condition_pushdown=@save_ecp; +set join_buffer_size= @save_join_buffer_size; +set max_heap_table_size= @save_max_heap_table_size; +explain select * from t1 where a in (select b from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t2 index b b 5 NULL 10 Using index +select * from t1; +a b +1 1 +1 1 +2 2 +select * from t1 where a in (select b from t2); +a b +1 1 +1 1 +2 2 +drop table t1, t2, t3; +set @save_join_buffer_size = @@join_buffer_size; +set join_buffer_size= 8000; +create table t1 (a int, filler1 binary(200), filler2 binary(200)); +insert into t1 select a, 'filler123456', 'filler123456' from t0; +insert into t1 select a+10, 'filler123456', 'filler123456' from t0; +create table t2 as select * from t1; +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +insert into t1 values (2, 'duplicate ok', 'duplicate ok'); +insert into t1 values (18, 'duplicate ok', 'duplicate ok'); +insert into t2 values (3, 'duplicate ok', 'duplicate ok'); +insert into t2 values (19, 'duplicate ok', 'duplicate ok'); +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 +1 PRIMARY ot hash_ALL NULL #hash#$hj 5 test.it.a 32 Using where; Using join buffer (flat, BNLH join) +2 SUBQUERY it ALL NULL NULL NULL NULL 22 Using where +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +a mid(filler1, 1,10) Z +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +2 duplicate 1 +18 duplicate 1 +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot ALL NULL NULL NULL NULL 22 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY it ALL NULL NULL NULL NULL 32 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +a mid(filler1, 1,10) length(filler1)=length(filler2) +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +3 duplicate 1 +19 duplicate 1 +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +insert into t1 select a+20, 'filler123456', 'filler123456' from t0; +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 +1 PRIMARY ot hash_ALL NULL #hash#$hj 5 test.it.a 52 Using where; Using join buffer (flat, BNLH join) +2 SUBQUERY it ALL NULL NULL NULL NULL 22 Using where +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z +from t1 ot where a in (select a from t2 it); +a mid(filler1, 1,10) Z +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +2 duplicate 1 +18 duplicate 1 +explain select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY ot ALL NULL NULL NULL NULL 22 +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY it ALL NULL NULL NULL NULL 52 +select +a, mid(filler1, 1,10), length(filler1)=length(filler2) +from t2 ot where a in (select a from t1 it); +a mid(filler1, 1,10) length(filler1)=length(filler2) +0 filler1234 1 +1 filler1234 1 +2 filler1234 1 +3 filler1234 1 +4 filler1234 1 +5 filler1234 1 +6 filler1234 1 +7 filler1234 1 +8 filler1234 1 +9 filler1234 1 +10 filler1234 1 +11 filler1234 1 +12 filler1234 1 +13 filler1234 1 +14 filler1234 1 +15 filler1234 1 +16 filler1234 1 +17 filler1234 1 +18 filler1234 1 +19 filler1234 1 +3 duplicate 1 +19 duplicate 1 +drop table t1, t2; +create table t1 (a int, b int, key(a)); +create table t2 (a int, b int, key(a)); +create table t3 (a int, b int, key(a)); +insert into t1 select a,a from t0; +insert into t2 select a,a from t0; +insert into t3 select a,a from t0; +t2 and t3 must be use 'ref', not 'ALL': +explain select * +from t0 where a in +(select t2.a+t3.a from t1 left join (t2 join t3) on t2.a=t1.a and t3.a=t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 10 Start temporary +1 PRIMARY t1 index NULL a 5 NULL 10 Using index; Using join buffer (flat, BNL join) +1 PRIMARY t2 ref a a 5 test.t1.a 1 Using where; Using index +1 PRIMARY t3 ref a a 5 test.t1.a 1 Using where; Using index; End temporary +drop table t0, t1,t2,t3; +CREATE TABLE t1 ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +); +CREATE TABLE t2 ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name), +INDEX (Population) +); +CREATE TABLE t3 ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +); +EXPLAIN +SELECT Name FROM t2 +WHERE t2.Code IN (SELECT Country FROM t1 WHERE Population > 5000000) +AND +t2.Code IN (SELECT Country FROM t3 +WHERE Language='English' AND Percentage > 10 AND +t2.Population > 100000); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Rowid-ordered scan +1 PRIMARY t3 eq_ref PRIMARY,Percentage PRIMARY 33 test.t1.Country,const 1 Using index condition; Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t1.Country 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +DROP TABLE t1,t2,t3; +CREATE TABLE t1 ( +Code char(3) NOT NULL DEFAULT '', +Name char(52) NOT NULL DEFAULT '', +Continent enum('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL DEFAULT 'Asia', +Region char(26) NOT NULL DEFAULT '', +SurfaceArea float(10,2) NOT NULL DEFAULT '0.00', +IndepYear smallint(6) DEFAULT NULL, +Population int(11) NOT NULL DEFAULT '0', +LifeExpectancy float(3,1) DEFAULT NULL, +GNP float(10,2) DEFAULT NULL, +GNPOld float(10,2) DEFAULT NULL, +LocalName char(45) NOT NULL DEFAULT '', +GovernmentForm char(45) NOT NULL DEFAULT '', +HeadOfState char(60) DEFAULT NULL, +Capital int(11) DEFAULT NULL, +Code2 char(2) NOT NULL DEFAULT '', +PRIMARY KEY (Code) +); +CREATE TABLE t2 ( +ID int(11) NOT NULL AUTO_INCREMENT, +Name char(35) NOT NULL DEFAULT '', +CountryCode char(3) NOT NULL DEFAULT '', +District char(20) NOT NULL DEFAULT '', +Population int(11) NOT NULL DEFAULT '0', +PRIMARY KEY (ID), +KEY CountryCode (CountryCode) +); +Fill the table with test data +This must not use LooseScan: +EXPLAIN SELECT Name FROM t1 +WHERE t1.Code IN ( +SELECT t2.CountryCode FROM t2 WHERE Population > 5000000); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 31 +1 PRIMARY subselect2 eq_ref unique_key unique_key 3 func 1 +2 SUBQUERY t2 ALL CountryCode NULL NULL NULL 545 Using where +SELECT Name FROM t1 +WHERE t1.Code IN ( +SELECT t2.CountryCode FROM t2 WHERE Population > 5000000); +Name +Austria +Canada +China +Czech Republic +drop table t1, t2; +CREATE TABLE t1(a INT); +CREATE TABLE t2(c INT); +CREATE PROCEDURE p1(v1 int) +BEGIN +SELECT 1 FROM t1 WHERE a = v1 AND a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p2(v1 int) +BEGIN +SELECT 1 FROM t1 WHERE a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p3(v1 int) +BEGIN +SELECT 1 +FROM +t1 t01,t1 t02,t1 t03,t1 t04,t1 t05,t1 t06,t1 t07,t1 t08, +t1 t09,t1 t10,t1 t11,t1 t12,t1 t13,t1 t14,t1 t15,t1 t16, +t1 t17,t1 t18,t1 t19,t1 t20,t1 t21,t1 t22,t1 t23,t1 t24, +t1 t25,t1 t26,t1 t27,t1 t28,t1 t29,t1 t30,t1 t31,t1 t32, +t1 t33,t1 t34,t1 t35,t1 t36,t1 t37,t1 t38,t1 t39,t1 t40, +t1 t41,t1 t42,t1 t43,t1 t44,t1 t45,t1 t46,t1 t47,t1 t48, +t1 t49,t1 t50,t1 t51,t1 t52,t1 t53,t1 t54,t1 t55,t1 t56, +t1 t57,t1 t58,t1 t59,t1 t60 +WHERE t01.a IN (SELECT c FROM t2); +END +// +CREATE PROCEDURE p4(v1 int) +BEGIN +SELECT 1 +FROM +t1 t01,t1 t02,t1 t03,t1 t04,t1 t05,t1 t06,t1 t07,t1 t08, +t1 t09,t1 t10,t1 t11,t1 t12,t1 t13,t1 t14,t1 t15,t1 t16, +t1 t17,t1 t18,t1 t19,t1 t20,t1 t21,t1 t22,t1 t23,t1 t24, +t1 t25,t1 t26,t1 t27,t1 t28,t1 t29,t1 t30,t1 t31,t1 t32, +t1 t33,t1 t34,t1 t35,t1 t36,t1 t37,t1 t38,t1 t39,t1 t40, +t1 t41,t1 t42,t1 t43,t1 t44,t1 t45,t1 t46,t1 t47,t1 t48, +t1 t49,t1 t50,t1 t51,t1 t52,t1 t53,t1 t54,t1 t55,t1 t56, +t1 t57,t1 t58,t1 t59,t1 t60 +WHERE t01.a = v1 AND t01.a IN (SELECT c FROM t2); +END +// +CALL p1(1); +1 +CALL p2(1); +1 +CALL p3(1); +1 +CALL p4(1); +1 +DROP TABLE t1, t2; +DROP PROCEDURE p1; +DROP PROCEDURE p2; +DROP PROCEDURE p3; +DROP PROCEDURE p4; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4); +create table t1 (a int, b int, key(a)); +insert into t1 select a,a from t0; +create table t2 (a int, b int, primary key(a)); +insert into t2 select * from t1; +Table t2, unlike table t1, should be displayed as pulled out +explain extended select * from t0 +where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and +t1.b=t2.b); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary +1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +Warnings: +Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where ((`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t1`.`a` = `test`.`t0`.`a`) and (`test`.`t2`.`a` = `test`.`t0`.`a`)) +update t1 set a=3, b=11 where a=4; +update t2 set b=11 where a=3; +# Not anymore: +# The following query gives wrong result due to Bug#49129 +select * from t0 where t0.a in +(select t1.a from t1, t2 where t2.a=t0.a and t1.b=t2.b); +a +0 +1 +2 +3 +drop table t0, t1, t2; +CREATE TABLE t1 ( +id int(11) NOT NULL, +PRIMARY KEY (id)); +CREATE TABLE t2 ( +id int(11) NOT NULL, +fid int(11) NOT NULL, +PRIMARY KEY (id)); +insert into t1 values(1); +insert into t2 values(1,7503),(2,1); +explain select count(*) +from t1 +where fid IN (select fid from t2 where (id between 7502 and 8420) order by fid ); +ERROR 42S22: Unknown column 'fid' in 'IN/ALL/ANY subquery' +drop table t1, t2; +create table t1 (a int, b int, key (a), key (b)); +insert into t1 values (2,4),(2,4),(2,4); +select t1.a from t1 +where +t1.a in (select 1 from t1 where t1.a in (select 1 from t1) group by t1.a); +a +drop table t1; +create table t1(a int,b int,key(a),key(b)); +insert into t1 values (1,1),(2,2),(3,3); +select 1 from t1 +where t1.a not in (select 1 from t1 +where t1.a in (select 1 from t1) +group by t1.b); +1 +1 +1 +drop table t1; +CREATE TABLE t1 +(EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), +GRADE DECIMAL(4), +CITY CHAR(15)); +CREATE TABLE t2 +(PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), +PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE t3 +(EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, +HOURS DECIMAL(5)); +INSERT INTO t1 VALUES ('E1','Alice',12,'Deale'); +INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO t1 VALUES ('E4','Don',12,'Deale'); +INSERT INTO t1 VALUES ('E5','Ed',13,'Akron'); +INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO t3 VALUES ('E1','P1',40); +INSERT INTO t3 VALUES ('E1','P2',20); +INSERT INTO t3 VALUES ('E1','P3',80); +INSERT INTO t3 VALUES ('E1','P4',20); +INSERT INTO t3 VALUES ('E1','P5',12); +INSERT INTO t3 VALUES ('E1','P6',12); +INSERT INTO t3 VALUES ('E2','P1',40); +INSERT INTO t3 VALUES ('E2','P2',80); +INSERT INTO t3 VALUES ('E3','P2',20); +INSERT INTO t3 VALUES ('E4','P2',20); +INSERT INTO t3 VALUES ('E4','P4',40); +INSERT INTO t3 VALUES ('E4','P5',80); +SELECT * FROM t1; +EMPNUM EMPNAME GRADE CITY +E1 Alice 12 Deale +E2 Betty 10 Vienna +E3 Carmen 13 Vienna +E4 Don 12 Deale +E5 Ed 13 Akron +CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM); +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP INDEX t1_IDX ON t1; +CREATE INDEX t1_IDX ON t1(EMPNUM); +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP INDEX t1_IDX ON t1; +SELECT EMPNAME +FROM t1 +WHERE EMPNUM IN +(SELECT EMPNUM +FROM t3 +WHERE PNUM IN +(SELECT PNUM +FROM t2 +WHERE PTYPE = 'Design')); +EMPNAME +Alice +Betty +Don +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (f1 INT NOT NULL); +CREATE VIEW v1 (a) AS SELECT f1 IN (SELECT f1 FROM t1) FROM t1; +SELECT * FROM v1; +a +drop view v1; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(a int, b int); +insert into t1 values (0,0),(1,1),(2,2); +create table t2 as select * from t1; +create table t3 (pk int, a int, primary key(pk)); +insert into t3 select a,a from t0; +explain +select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY t2 hash_ALL NULL #hash#$hj 5 test.t1.a 3 Using where; Using join buffer (flat, BNLH join) +2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY PRIMARY 4 func 1 Using index +drop table t0, t1, t2, t3; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a char(200), b char(200), c char(200), primary key (a,b,c)) engine=innodb; +insert into t2 select concat(a, repeat('X',198)),repeat('B',200),repeat('B',200) from t1; +insert into t2 select concat(a, repeat('Y',198)),repeat('B',200),repeat('B',200) from t1; +alter table t2 add filler1 int; +insert into t1 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; +set @save_join_buffer_size=@@join_buffer_size; +set join_buffer_size=1; +select * from t2 where filler1 in ( select a from t1); +a b c filler1 +set join_buffer_size=default; +drop table t1, t2; +create table t1 (a int not null); +drop procedure if exists p1; +CREATE PROCEDURE p1() +BEGIN +DECLARE EXIT HANDLER FOR SQLEXCEPTION select a from t1; +prepare s1 from ' + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( + select a from t1 where a in ( select a from t1) + )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))'; +execute s1; +END; +| +call p1(); +a +drop procedure p1; +drop table t1; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int) as select A.a + 10 *(B.a + 10*C.a) as a from t0 A, t0 B, t0 C; +create table t2 (id int, a int, primary key(id), key(a)) as select a as id, a as a from t1; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL DEFAULT '0', + `a` int(11) DEFAULT NULL, + PRIMARY KEY (`id`), + KEY `a` (`a`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +set @a=0; +create table t3 as select * from t2 limit 0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +insert into t3 select @a:=@a+1, t2.a from t2, t0; +alter table t3 add primary key(id), add key(a); +The following must use loose index scan over t3, key a: +explain select count(a) from t2 where a in ( SELECT a FROM t3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 index a a 5 NULL 1000 Using index +1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1 +2 SUBQUERY t3 index a a 5 NULL 30000 Using index +select count(a) from t2 where a in ( SELECT a FROM t3); +count(a) +1000 +drop table t0,t1,t2,t3; + +BUG#42740: crash in optimize_semijoin_nests + +create table t1 (c6 timestamp,key (c6)) engine=innodb; +create table t2 (c2 double) engine=innodb; +explain select 1 from t2 where c2 = any (select log10(null) from t1 where c6 <null) ; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t1, t2; +# +# BUG#42742: crash in setup_sj_materialization, Copy_field::set +# +create table t3 ( c1 year) engine=innodb; +insert into t3 values (2135),(2142); +create table t2 (c1 tinytext,c2 text,c6 timestamp) engine=innodb; +# The following must not crash, EXPLAIN should show one SJ strategy, not a mix: +explain select 1 from t2 where +c2 in (select 1 from t3, t2) and +c1 in (select convert(c6,char(1)) from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join) +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2); Using join buffer (incremental, BNL join) +drop table t2, t3; +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; diff --git a/mysql-test/r/subselect_sj_jcl6.result b/mysql-test/r/subselect_sj_jcl6.result new file mode 100644 index 00000000000..46ca02cd71a --- /dev/null +++ b/mysql-test/r/subselect_sj_jcl6.result @@ -0,0 +1,1287 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set @@optimizer_switch='join_cache_hashed=off'; +set join_cache_level=6; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 6 +drop table if exists t0, t1, t2, t3, t4, t10, t11, t12; +set @save_optimizer_switch=@@optimizer_switch; +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1(a int, b int); +insert into t1 values (0,0),(1,1),(2,2); +create table t2 as select * from t1; +create table t11(a int, b int); +create table t10 (pk int, a int, primary key(pk)); +insert into t10 select a,a from t0; +create table t12 like t10; +insert into t12 select * from t10; +Flattened because of dependency, t10=func(t1) +explain select * from t1 where a in (select pk from t10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +select * from t1 where a in (select pk from t10); +a b +0 0 +1 1 +2 2 +A confluent case of dependency +explain select * from t1 where a in (select a from t10 where pk=12); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select * from t1 where a in (select a from t10 where pk=12); +a b +explain select * from t1 where a in (select a from t10 where pk=9); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t10 const PRIMARY PRIMARY 4 const 1 +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +select * from t1 where a in (select a from t10 where pk=9); +a b +An empty table inside +explain select * from t1 where a in (select a from t11); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select * from t1 where a in (select a from t11); +a b +explain select * from t1 where a in (select pk from t10) and b in (select pk from t10); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using index +select * from t1 where a in (select pk from t10) and b in (select pk from t10); +a b +0 0 +1 1 +2 2 +flattening a nested subquery +explain select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 Using index +select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12)); +a b +0 0 +1 1 +2 2 +flattening subquery w/ several tables +explain extended select * from t1 where a in (select t10.pk from t10, t12 where t12.pk=t10.a); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`)) +subqueries within outer joins go into ON expr. +explAin extended +select * from t1 left join (t2 A, t2 B) on ( A.A= t1.A And B.A in (select pk from t10)); +id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +1 PRIMARY A ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (flAt, BNL join) +1 PRIMARY B ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (incrementAl, BNL join) +2 DEPENDENT SUBQUERY t10 unique_suBquery PRIMARY PRIMARY 4 func 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`A`.`A` AS `A`,`test`.`A`.`B` AS `B`,`test`.`B`.`A` AS `A`,`test`.`B`.`B` AS `B` from `test`.`t1` left join (`test`.`t2` `A` join `test`.`t2` `B`) on((<in_optimizer>(`test`.`B`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`B`.`A`) in t10 on PRIMARY))) And (`test`.`A`.`A` = `test`.`t1`.`A`))) where 1 +t2 should be wrapped into OJ-nest, so we have "t1 LJ (t2 J t10)" +explAin extended +select * from t1 left join t2 on (t2.A= t1.A And t2.A in (select pk from t10)); +id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (flAt, BNL join) +2 DEPENDENT SUBQUERY t10 unique_suBquery PRIMARY PRIMARY 4 func 1 100.00 Using index +Warnings: +Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`t2`.`A` AS `A`,`test`.`t2`.`B` AS `B` from `test`.`t1` left join `test`.`t2` on((<in_optimizer>(`test`.`t2`.`A`,<exists>(<primAry_index_lookup>(<cAche>(`test`.`t2`.`A`) in t10 on PRIMARY))) And (`test`.`t2`.`A` = `test`.`t1`.`A`))) where 1 +we shouldn't flatten if we're going to get a join of > MAX_TABLES. +explain select * from +t1 s00, t1 s01, t1 s02, t1 s03, t1 s04,t1 s05,t1 s06,t1 s07,t1 s08,t1 s09, +t1 s10, t1 s11, t1 s12, t1 s13, t1 s14,t1 s15,t1 s16,t1 s17,t1 s18,t1 s19, +t1 s20, t1 s21, t1 s22, t1 s23, t1 s24,t1 s25,t1 s26,t1 s27,t1 s28,t1 s29, +t1 s30, t1 s31, t1 s32, t1 s33, t1 s34,t1 s35,t1 s36,t1 s37,t1 s38,t1 s39, +t1 s40, t1 s41, t1 s42, t1 s43, t1 s44,t1 s45,t1 s46,t1 s47,t1 s48,t1 s49 +where +s00.a in ( +select m00.a from +t1 m00, t1 m01, t1 m02, t1 m03, t1 m04,t1 m05,t1 m06,t1 m07,t1 m08,t1 m09, +t1 m10, t1 m11, t1 m12, t1 m13, t1 m14,t1 m15,t1 m16,t1 m17,t1 m18,t1 m19 +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY s00 ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY s01 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 PRIMARY s02 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s03 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s04 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s05 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s06 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s07 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s08 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s09 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s10 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s11 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s12 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s13 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s14 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s15 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s16 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s17 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s18 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s19 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s20 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s21 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s22 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s23 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s24 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s25 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s26 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s27 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s28 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s29 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s30 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s31 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s32 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s33 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s34 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s35 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s36 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s37 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s38 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s39 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s40 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s41 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s42 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s43 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s44 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s45 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s46 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s47 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s48 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +1 PRIMARY s49 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m00 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY m01 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY m02 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m03 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m04 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m05 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m06 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m07 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m08 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m09 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m10 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m11 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m12 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m13 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m14 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m15 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m16 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m17 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m18 ALL NULL NULL NULL NULL 3 Using join buffer (incremental, BNL join) +2 DEPENDENT SUBQUERY m19 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (incremental, BNL join) +select * from +t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10)) +where t1.a < 5; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +prepare s1 from +' select * from + t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t10)) + where t1.a < 5'; +execute s1; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +execute s1; +a b a b +0 0 0 0 +1 1 1 1 +2 2 2 2 +insert into t1 select (A.a + 10 * B.a),1 from t0 A, t0 B; +explain extended select * from t1 where a in (select pk from t10 where pk<3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t10 range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index +1 PRIMARY t1 ALL NULL NULL NULL NULL 103 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t10`.`pk`) and (`test`.`t10`.`pk` < 3)) +drop table t0, t1, t2; +drop table t10, t11, t12; + +Bug#37899: Wrongly checked optimization prerequisite caused failed +assertion. + +CREATE TABLE t1 ( +`pk` int(11), +`varchar_nokey` varchar(5) +); +INSERT INTO t1 VALUES +(1,'qk'),(2,'j'),(3,'aew'); +SELECT * +FROM t1 +WHERE varchar_nokey IN ( +SELECT +varchar_nokey +FROM +t1 +) XOR pk = 30; +pk varchar_nokey +1 qk +2 j +3 aew +drop table t1; +# +# BUG#41842: Semi-join materialization strategy crashes when the upper query has HAVING +# +CREATE TABLE t1 ( +pk int(11) NOT NULL AUTO_INCREMENT, +int_nokey int(11) NOT NULL, +time_key time NOT NULL, +datetime_key datetime NOT NULL, +datetime_nokey datetime NOT NULL, +varchar_key varchar(1) NOT NULL, +varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY time_key (time_key), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t1 VALUES +(1,0, '00:16:10','2008-09-03 14:25:40','2008-09-03 14:25:40','h','h'), +(2,7, '00:00:00','2001-01-13 00:00:00','2001-01-13 00:00:00','',''), +(3,0, '00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'), +(4,2, '16:29:24','2000-10-16 01:39:08','2000-10-16 01:39:08','w','w'), +(5,1, '09:23:32','0000-00-00 00:00:00','0000-00-00 00:00:00','p','p'), +(6,3, '00:00:00','2007-12-02 00:00:00','2007-12-02 00:00:00','o','o'), +(7,3, '00:00:00','2008-09-11 00:00:00','2008-09-11 00:00:00','',''), +(8,0, '13:59:04','0000-00-00 00:00:00','0000-00-00 00:00:00','s','s'), +(9,7, '09:01:06','0000-00-00 00:00:00','0000-00-00 00:00:00','d','d'), +(10,5,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','n','n'), +(11,0,'21:06:46','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'), +(12,2,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','',''), +(13,6,'14:45:34','2003-07-28 02:34:08','2003-07-28 02:34:08','w','w'), +(14,1,'15:04:12','0000-00-00 00:00:00','0000-00-00 00:00:00','o','o'), +(15,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','x','x'), +(16,0,'15:55:23','2004-03-17 00:32:27','2004-03-17 00:32:27','p','p'), +(17,1,'16:30:00','2004-12-27 19:20:00','2004-12-27 19:20:00','d','d'), +(18,0,'00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','h','h'), +(19,0,'14:13:26','2008-11-09 05:53:48','2008-11-09 05:53:48','o','o'), +(20,0,'00:00:00','2009-10-11 06:58:04','2009-10-11 06:58:04','k','k'); +CREATE TABLE t2 ( +pk int(11) NOT NULL AUTO_INCREMENT, +int_nokey int(11) NOT NULL, +time_key time NOT NULL, +datetime_key datetime NOT NULL, +datetime_nokey datetime NOT NULL, +varchar_key varchar(1) NOT NULL, +varchar_nokey varchar(1) NOT NULL, +PRIMARY KEY (pk), +KEY time_key (time_key), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(10,0,'19:39:13','0000-00-00 00:00:00','0000-00-00 00:00:00','g','g'), +(11,8,'03:43:53','0000-00-00 00:00:00','0000-00-00 00:00:00','b','b'); +SELECT OUTR.datetime_nokey AS X FROM t1 AS OUTR +WHERE +OUTR.varchar_nokey IN (SELECT +INNR . varchar_nokey AS Y +FROM t2 AS INNR +WHERE +INNR . datetime_key >= INNR . time_key OR +INNR . pk = INNR . int_nokey +) +AND OUTR . varchar_nokey <= 'w' +HAVING X > '2012-12-12'; +X +drop table t1, t2; +# +# Bug#45191: Incorrectly initialized semi-join led to a wrong result. +# +CREATE TABLE STAFF (EMPNUM CHAR(3) NOT NULL, +EMPNAME CHAR(20), GRADE DECIMAL(4), CITY CHAR(15)); +CREATE TABLE PROJ (PNUM CHAR(3) NOT NULL, +PNAME CHAR(20), PTYPE CHAR(6), +BUDGET DECIMAL(9), +CITY CHAR(15)); +CREATE TABLE WORKS (EMPNUM CHAR(3) NOT NULL, +PNUM CHAR(3) NOT NULL, HOURS DECIMAL(5)); +INSERT INTO STAFF VALUES ('E1','Alice',12,'Deale'); +INSERT INTO STAFF VALUES ('E2','Betty',10,'Vienna'); +INSERT INTO STAFF VALUES ('E3','Carmen',13,'Vienna'); +INSERT INTO STAFF VALUES ('E4','Don',12,'Deale'); +INSERT INTO STAFF VALUES ('E5','Ed',13,'Akron'); +INSERT INTO PROJ VALUES ('P1','MXSS','Design',10000,'Deale'); +INSERT INTO PROJ VALUES ('P2','CALM','Code',30000,'Vienna'); +INSERT INTO PROJ VALUES ('P3','SDP','Test',30000,'Tampa'); +INSERT INTO PROJ VALUES ('P4','SDP','Design',20000,'Deale'); +INSERT INTO PROJ VALUES ('P5','IRM','Test',10000,'Vienna'); +INSERT INTO PROJ VALUES ('P6','PAYR','Design',50000,'Deale'); +INSERT INTO WORKS VALUES ('E1','P1',40); +INSERT INTO WORKS VALUES ('E1','P2',20); +INSERT INTO WORKS VALUES ('E1','P3',80); +INSERT INTO WORKS VALUES ('E1','P4',20); +INSERT INTO WORKS VALUES ('E1','P5',12); +INSERT INTO WORKS VALUES ('E1','P6',12); +INSERT INTO WORKS VALUES ('E2','P1',40); +INSERT INTO WORKS VALUES ('E2','P2',80); +INSERT INTO WORKS VALUES ('E3','P2',20); +INSERT INTO WORKS VALUES ('E4','P2',20); +INSERT INTO WORKS VALUES ('E4','P4',40); +INSERT INTO WORKS VALUES ('E4','P5',80); +set optimizer_switch=@save_optimizer_switch; +set optimizer_switch='materialization=off'; +explain SELECT EMPNUM, EMPNAME +FROM STAFF +WHERE EMPNUM IN +(SELECT EMPNUM FROM WORKS +WHERE PNUM IN +(SELECT PNUM FROM PROJ)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY STAFF ALL NULL NULL NULL NULL 5 +1 PRIMARY PROJ ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join) +1 PRIMARY WORKS ALL NULL NULL NULL NULL 12 Using where; FirstMatch(STAFF); Using join buffer (incremental, BNL join) +SELECT EMPNUM, EMPNAME +FROM STAFF +WHERE EMPNUM IN +(SELECT EMPNUM FROM WORKS +WHERE PNUM IN +(SELECT PNUM FROM PROJ)); +EMPNUM EMPNAME +E1 Alice +E2 Betty +E3 Carmen +E4 Don +set optimizer_switch=@save_optimizer_switch; +drop table STAFF,WORKS,PROJ; +# End of bug#45191 +# +# Bug#46550 Azalea returning duplicate results for some IN subqueries +# w/ semijoin=on +# +DROP TABLE IF EXISTS t0, t1, t2; +CREATE TABLE t0 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t0 VALUES +(1,'m','m'), +(40,'h','h'), +(1,'r','r'), +(1,'h','h'), +(9,'x','x'), +(NULL,'q','q'), +(NULL,'k','k'), +(7,'l','l'), +(182,'k','k'), +(202,'a','a'), +(7,'x','x'), +(6,'j','j'), +(119,'z','z'), +(4,'d','d'), +(5,'h','h'), +(1,'u','u'), +(3,'q','q'), +(7,'a','a'), +(3,'e','e'), +(6,'l','l'); +CREATE TABLE t1 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t1 VALUES (7,NULL,NULL),(4,'x','x'); +CREATE TABLE t2 ( +int_key int(11) DEFAULT NULL, +varchar_key varchar(1) DEFAULT NULL, +varchar_nokey varchar(1) DEFAULT NULL, +KEY int_key (int_key), +KEY varchar_key (varchar_key,int_key) +); +INSERT INTO t2 VALUES (123,NULL,NULL); +SELECT int_key +FROM t0 +WHERE varchar_nokey IN ( +SELECT t1 .varchar_key from t1 +); +int_key +9 +7 +SELECT t0.int_key +FROM t0 +WHERE t0.varchar_nokey IN ( +SELECT t1_1 .varchar_key +FROM t1 AS t1_1 JOIN t1 AS t1_2 ON t1_1 .int_key +); +int_key +9 +7 +SELECT t0.int_key +FROM t0, t2 +WHERE t0.varchar_nokey IN ( +SELECT t1_1 .varchar_key +FROM t1 AS t1_1 JOIN t1 AS t1_2 ON t1_1 .int_key +); +int_key +9 +7 +DROP TABLE t0, t1, t2; +# End of bug#46550 +# +# Bug #46744 Crash in optimize_semijoin_nests on empty view +# with limit and procedure. +# +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +DROP PROCEDURE IF EXISTS p1; +CREATE TABLE t1 ( f1 int ); +CREATE TABLE t2 ( f1 int ); +insert into t2 values (5), (7); +CREATE OR REPLACE VIEW v1 AS SELECT * FROM t1 LIMIT 2; +create procedure p1() +select COUNT(*) +FROM v1 WHERE f1 IN +(SELECT f1 FROM t2 WHERE f1 = ANY (SELECT f1 FROM v1)); +SET SESSION optimizer_switch = 'semijoin=on'; +CALL p1(); +COUNT(*) +0 +SET SESSION optimizer_switch = 'semijoin=off'; +CALL p1(); +COUNT(*) +0 +drop table t1, t2; +drop view v1; +drop procedure p1; +set SESSION optimizer_switch=@save_optimizer_switch; +# End of bug#46744 + +Bug#46797 "Crash in fix_semijoin_strategies_for_picked_join_order +with semijoin=on" + +CREATE TABLE t1 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +CREATE TABLE t2 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(NULL),(NULL),(NULL),(NULL),('a'),('a'),('a'),('b'),('b'),('b'),('b'),('c'), +('c'),('c'),('c'),('c'),('c'),('c'),('d'),('d'),('d'),('d'),('d'),('d'),('e'), +('e'),('e'),('e'),('e'),('e'),('f'),('f'),('f'),('g'),('g'),('h'),('h'),('h'), +('h'),('i'),('j'),('j'),('j'),('k'),('k'),('l'),('l'),('m'),('m'),('m'),('m'), +('n'),('n'),('n'),('o'),('o'),('o'),('p'),('p'),('p'),('q'),('q'),('q'),('r'), +('r'),('r'),('r'),('s'),('s'),('s'),('s'),('t'),('t'),('t'),('t'),('u'),('u'), +('u'),('u'),('v'),('v'),('v'),('v'),('w'),('w'),('w'),('w'),('w'),('w'),('x'), +('x'),('x'),('y'),('y'),('y'),('y'),('z'),('z'),('z'),('z'); +CREATE TABLE t3 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO t3 VALUES +(NULL),('c'),('d'),('e'),('f'),('h'),('j'),('k'),('k'),('m'),('m'),('m'), +('n'),('o'),('r'),('t'),('t'),('u'),('w'),('y'); +SELECT varchar_key FROM t3 +WHERE (SELECT varchar_key FROM t3 +WHERE (varchar_key,varchar_key) +IN (SELECT t1.varchar_key, t2 .varchar_key +FROM t1 RIGHT JOIN t2 ON t1.varchar_key +) +); +varchar_key +DROP TABLE t1, t2, t3; +# +# Bug#46556 Returning incorrect, empty results for some IN subqueries +# w/semijoin=on +# +CREATE TABLE t0 ( +pk INTEGER, +vkey VARCHAR(1), +vnokey VARCHAR(1), +PRIMARY KEY (pk), +KEY vkey(vkey) +); +INSERT INTO t0 +VALUES (1,'g','g'), (2,'v','v'), (3,'t','t'), (4,'u','u'), (5,'n','n'); +EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN +(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t0 ALL PRIMARY NULL NULL NULL 5 100.00 +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t2 ref vkey vkey 4 test.t1.vnokey 2 100.00 Using index; FirstMatch(t1) +Warnings: +Note 1003 select `test`.`t0`.`vkey` AS `vkey` from `test`.`t0` `t1` semi join (`test`.`t0` `t2`) join `test`.`t0` where ((`test`.`t2`.`vkey` = `test`.`t1`.`vnokey`) and (`test`.`t1`.`pk` = `test`.`t0`.`pk`)) +SELECT vkey FROM t0 WHERE pk IN +(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey); +vkey +g +v +t +u +n +DROP TABLE t0; +# End of bug#46556 + +Bug #48073 Subquery on char columns from view crashes Mysql + +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +CREATE TABLE t1 ( +city VARCHAR(50) NOT NULL, +country_id SMALLINT UNSIGNED NOT NULL +); +INSERT INTO t1 VALUES +('Batna',2), +('Bchar',2), +('Skikda',2), +('Tafuna',3), +('Algeria',2) ; +CREATE TABLE t2 ( +country_id SMALLINT UNSIGNED NOT NULL, +country VARCHAR(50) NOT NULL +); +INSERT INTO t2 VALUES +(2,'Algeria'), +(3,'American Samoa') ; +CREATE VIEW v1 AS +SELECT country_id, country +FROM t2 +WHERE LEFT(country,1) = "A" +; +SELECT city, country_id +FROM t1 +WHERE city IN ( +SELECT country +FROM t2 +WHERE LEFT(country, 1) = "A" +); +city country_id +Algeria 2 +SELECT city, country_id +FROM t1 +WHERE city IN ( +SELECT country +FROM v1 +); +city country_id +Algeria 2 +drop table t1, t2; +drop view v1; +# End of bug#48073 + +Bug#48834: Procedure with view + subquery + semijoin=on +crashes on second call. + +SET SESSION optimizer_switch ='semijoin=on'; +CREATE TABLE t1 ( t1field integer, primary key (t1field)); +CREATE TABLE t2 ( t2field integer, primary key (t2field)); +CREATE VIEW v1 AS +SELECT t1field as v1field +FROM t1 A +WHERE A.t1field IN (SELECT t1field FROM t2 ); +CREATE VIEW v2 AS +SELECT t2field as v2field +FROM t2 A +WHERE A.t2field IN (SELECT t2field FROM t2 ); +CREATE PROCEDURE p1 () +BEGIN +SELECT v1field +FROM v1 +WHERE v1field IN ( SELECT v2field as vf_inner FROM v2 ); +END| +INSERT INTO t1 VALUES (1),(2),(3); +INSERT INTO t2 VALUES (2),(3),(4); +CALL p1; +v1field +2 +3 +CALL p1; +v1field +2 +3 +DROP TABLE t1,t2; +DROP VIEW v1,v2; +DROP PROCEDURE p1; +set SESSION optimizer_switch=@save_optimizer_switch; +# End of BUG#48834 + +Bug#49097 subquery with view generates wrong result with +non-prepared statement + +DROP TABLE IF EXISTS t1, t2; +DROP VIEW IF EXISTS v1; +CREATE TABLE t1 ( +city VARCHAR(50) NOT NULL, +country_id SMALLINT UNSIGNED NOT NULL +); +INSERT INTO t1 VALUES +('Batna',2), +('Bchar',2), +('Skikda',2), +('Tafuna',3), +('Algeria',2) ; +CREATE TABLE t2 ( +country_id SMALLINT UNSIGNED NOT NULL, +country VARCHAR(50) NOT NULL +); +INSERT INTO t2 VALUES +(2,'Algeria'), +(3,'XAmerican Samoa') ; +CREATE VIEW v1 AS +SELECT country_id, country +FROM t2 +WHERE LEFT(country,1) = "A" +; +SELECT city, country_id +FROM t1 +WHERE country_id IN ( +SELECT country_id +FROM t2 +WHERE LEFT(country,1) = "A" +); +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +SELECT city, country_id +FROM t1 +WHERE country_id IN ( +SELECT country_id +FROM v1 +); +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +PREPARE stmt FROM +" +SELECT city, country_id +FROM t1 +WHERE country_id IN ( + SELECT country_id + FROM v1 +); +"; +execute stmt; +city country_id +Batna 2 +Bchar 2 +Skikda 2 +Algeria 2 +deallocate prepare stmt; +drop table t1, t2; +drop view v1; +# End of Bug#49097 +# +# BUG#38075: Wrong result: rows matching a subquery with outer join not returned +# +DROP TABLE IF EXISTS ot1, it1, it2; +CREATE TABLE it2 ( +int_key int(11) NOT NULL, +datetime_key datetime NOT NULL, +KEY int_key (int_key), +KEY datetime_key (datetime_key) +); +INSERT INTO it2 VALUES +(5,'2002-04-10 14:25:30'), (0,'0000-00-00 00:00:00'), +(0,'2006-09-14 04:01:02'), (4,'0000-00-00 00:00:00'), +(8,'0000-00-00 00:00:00'), (5,'0000-00-00 00:00:00'), +(9,'0000-00-00 00:00:00'), (8,'2007-04-01 11:04:17'), +(1,'0000-00-00 00:00:00'), (7,'2009-01-12 00:00:00'), +(0,'2009-06-05 00:00:00'), (3,'2006-02-14 18:06:35'), +(5,'2006-02-21 07:08:16'), (0,'0000-00-00 00:00:00'), +(7,'0000-00-00 00:00:00'), (0,'0000-00-00 00:00:00'), +(0,'2007-02-13 00:00:00'), (1,'0000-00-00 00:00:00'), +(0,'0000-00-00 00:00:00'), (1,'2003-08-11 00:00:00'); +CREATE TABLE ot1 ( +int_nokey int(11) NOT NULL, +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO ot1 VALUES +(5,0), (3,0), (0,2), (3,0), (1,3), (0,0), (1,7), (7,0), (1,7), (0,7), +(0,9), (8,2), (4,4), (9,3), (0,9), (2,5), (0,5), (8,0), (5,8), (1,5); +CREATE TABLE it1 ( +int_nokey int(11) NOT NULL, +int_key int(11) NOT NULL, +KEY int_key (int_key) +); +INSERT INTO it1 VALUES +(9,5), (0,4); +SELECT int_key FROM ot1 +WHERE int_nokey IN (SELECT it2.int_key +FROM it1 LEFT JOIN it2 ON it2.datetime_key); +int_key +0 +2 +0 +7 +9 +9 +5 +2 +0 +0 +0 +3 +7 +7 +8 +0 +5 +EXPLAIN +SELECT int_key FROM ot1 +WHERE int_nokey IN (SELECT it2.int_key +FROM it1 LEFT JOIN it2 ON it2.datetime_key); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY it1 index NULL int_key 4 NULL 2 Using index; Start temporary +1 PRIMARY ot1 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join) +1 PRIMARY it2 ALL NULL NULL NULL NULL 20 Using where; End temporary; Using join buffer (incremental, BNL join) +DROP TABLE ot1, it1, it2; +# End of BUG#38075 +# +# BUG#31480: Incorrect result for nested subquery when executed via semi join +# +create table t1 (a int not null, b int not null); +create table t2 (c int not null, d int not null); +create table t3 (e int not null); +insert into t1 values (1,10); +insert into t1 values (2,10); +insert into t1 values (1,20); +insert into t1 values (2,20); +insert into t1 values (3,20); +insert into t1 values (2,30); +insert into t1 values (4,40); +insert into t2 values (2,10); +insert into t2 values (2,20); +insert into t2 values (4,10); +insert into t2 values (5,10); +insert into t2 values (3,20); +insert into t2 values (2,40); +insert into t3 values (10); +insert into t3 values (30); +insert into t3 values (10); +insert into t3 values (20); +explain extended +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Start temporary +1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where; End temporary; Using join buffer (flat, BNL join) +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +Warnings: +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))) +show warnings; +Level Code Message +Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))) +select a from t1 +where a in (select c from t2 where d >= some(select e from t3 where b=e)); +a +2 +2 +3 +2 +drop table t1, t2, t3; +# +# Bug#48213 Materialized subselect crashes if using GEOMETRY type +# +CREATE TABLE t1 ( +pk int, +a varchar(1), +b varchar(4), +c tinyblob, +d blob, +e mediumblob, +f longblob, +g tinytext, +h text, +i mediumtext, +j longtext, +k geometry, +PRIMARY KEY (pk) +); +INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff', 'ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii','iiii','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')), (2,'f','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff','ffff',GeomFromText('POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))')); +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY subselect2 eq_ref unique_key unique_key 13 func 1 1.00 +2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0); +pk +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`c` = `test`.`t1`.`c`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` = `test`.`t1`.`d`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0); +pk +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`e` = `test`.`t1`.`e`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`f` = `test`.`t1`.`f`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`g` = `test`.`t1`.`g`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`h` = `test`.`t1`.`h`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`i` = `test`.`t1`.`i`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`j` = `test`.`t1`.`j`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0); +pk +1 +2 +EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`k` = `test`.`t1`.`k`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0)) +SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0); +pk +1 +2 +DROP TABLE t1, t2; +# End of Bug#48213 +# +# Bug#49198 Wrong result for second call of procedure +# with view in subselect. +# +CREATE TABLE t1 (t1field integer, primary key (t1field)); +CREATE TABLE t2 (t2field integer, primary key (t2field)); +CREATE TABLE t3 (t3field integer, primary key (t3field)); +CREATE VIEW v2 AS SELECT * FROM t2; +CREATE VIEW v3 AS SELECT * FROM t3; +INSERT INTO t1 VALUES(1),(2); +INSERT INTO t2 VALUES(1),(2); +INSERT INTO t3 VALUES(1),(2); +PREPARE stmt FROM +" +SELECT t1field +FROM t1 +WHERE t1field IN (SELECT * FROM v2); +"; +EXECUTE stmt; +t1field +1 +2 +EXECUTE stmt; +t1field +1 +2 +PREPARE stmt FROM +" +EXPLAIN +SELECT t1field +FROM t1 +WHERE t1field IN (SELECT * FROM v2) + AND t1field IN (SELECT * FROM v3) +"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index +DROP TABLE t1, t2, t3; +DROP VIEW v2, v3; +# End of Bug#49198 +# +# Bug#45174: Incorrectly applied equality propagation caused wrong +# result on a query with a materialized semi-join. +# +CREATE TABLE `t1` ( +`pk` int(11) NOT NULL AUTO_INCREMENT, +`varchar_key` varchar(1) NOT NULL, +`varchar_nokey` varchar(1) NOT NULL, +PRIMARY KEY (`pk`), +KEY `varchar_key` (`varchar_key`) +); +INSERT INTO `t1` VALUES (11,'m','m'),(12,'j','j'),(13,'z','z'),(14,'a','a'),(15,'',''),(16,'e','e'),(17,'t','t'),(19,'b','b'),(20,'w','w'),(21,'m','m'),(23,'',''),(24,'w','w'),(26,'e','e'),(27,'e','e'),(28,'p','p'); +CREATE TABLE `t2` ( +`varchar_nokey` varchar(1) NOT NULL +); +INSERT INTO `t2` VALUES ('v'),('u'),('n'),('l'),('h'),('u'),('n'),('j'),('k'),('e'),('i'),('u'),('n'),('b'),('x'),(''),('q'),('u'); +EXPLAIN EXTENDED SELECT varchar_nokey +FROM t2 +WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( +SELECT `varchar_key` , `varchar_nokey` +FROM t1 +WHERE `varchar_nokey` < 'n' XOR `pk` ) ; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 +1 PRIMARY subselect2 eq_ref unique_key unique_key 8 func 1 1.00 +2 SUBQUERY t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`)) +SELECT varchar_nokey +FROM t2 +WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( +SELECT `varchar_key` , `varchar_nokey` +FROM t1 +WHERE `varchar_nokey` < 'n' XOR `pk` ) ; +varchar_nokey +DROP TABLE t1, t2; +# End of the test for bug#45174. +# +# BUG#43768: Prepared query with nested subqueries core dumps on second execution +# +create table t1 ( +id int(11) unsigned not null primary key auto_increment, +partner_id varchar(35) not null, +t1_status_id int(10) unsigned +); +insert into t1 values ("1", "partner1", "10"), ("2", "partner2", "10"), +("3", "partner3", "10"), ("4", "partner4", "10"); +create table t2 ( +id int(11) unsigned not null default '0', +t1_line_id int(11) unsigned not null default '0', +article_id varchar(20), +sequence int(11) not null default '0', +primary key (id,t1_line_id) +); +insert into t2 values ("1", "1", "sup", "0"), ("2", "1", "sup", "1"), +("2", "2", "sup", "2"), ("2", "3", "sup", "3"), +("2", "4", "imp", "4"), ("3", "1", "sup", "0"), +("4", "1", "sup", "0"); +create table t3 ( +id int(11) not null default '0', +preceeding_id int(11) not null default '0', +primary key (id,preceeding_id) +); +create table t4 ( +user_id varchar(50) not null, +article_id varchar(20) not null, +primary key (user_id,article_id) +); +insert into t4 values("nicke", "imp"); +prepare stmt from +'select t1.partner_id +from t1 +where + t1.id in ( + select pl_inner.id + from t2 as pl_inner + where pl_inner.article_id in ( + select t4.article_id from t4 + where t4.user_id = \'nicke\' + ) + )'; +execute stmt; +partner_id +partner2 +execute stmt; +partner_id +partner2 +drop table t1,t2,t3,t4; +# +# Bug#48623 Multiple subqueries are optimized incorrectly +# +CREATE TABLE t1(val VARCHAR(10)); +CREATE TABLE t2(val VARCHAR(10)); +CREATE TABLE t3(val VARCHAR(10)); +INSERT INTO t1 VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +INSERT INTO t2 VALUES('aaa'), ('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +INSERT INTO t3 VALUES('aaa'), ('bbb'), ('eee'), ('mmm'), ('ppp'); +EXPLAIN +SELECT * +FROM t1 +WHERE t1.val IN (SELECT t2.val FROM t2 +WHERE t2.val LIKE 'a%' OR t2.val LIKE 'e%') +AND t1.val IN (SELECT t3.val FROM t3 +WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%'); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY subselect3 eq_ref unique_key unique_key 14 func 1 +1 PRIMARY subselect2 eq_ref unique_key unique_key 14 func 1 +3 SUBQUERY t3 ALL NULL NULL NULL NULL 5 Using where +2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where +SELECT * +FROM t1 +WHERE t1.val IN (SELECT t2.val FROM t2 +WHERE t2.val LIKE 'a%' OR t2.val LIKE 'e%') +AND t1.val IN (SELECT t3.val FROM t3 +WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%'); +val +aaa +eee +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t3; +# End of Bug#48623 +# +# LPBUG#602574: RQG: sql_select.cc:5385: bool greedy_search(JOIN*, table_map, uint, +# uint): Assertion `join->best_read < +# +set @save_optimizer_switch=@@optimizer_switch; +set optimizer_switch='materialization=off'; +CREATE TABLE t1 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +CREATE TABLE t2 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +); +INSERT INTO t2 VALUES +(NULL),(NULL),(NULL),(NULL),('a'),('a'),('a'),('b'),('b'),('b'),('b'),('c'), +('c'),('c'),('c'),('c'),('c'),('c'),('d'),('d'),('d'),('d'),('d'),('d'),('e'), +('e'),('e'),('e'),('e'),('e'),('f'),('f'),('f'),('g'),('g'),('h'),('h'),('h'), +('h'),('i'),('j'),('j'),('j'),('k'),('k'),('l'),('l'),('m'),('m'),('m'),('m'), +('n'),('n'),('n'),('o'),('o'),('o'),('p'),('p'),('p'),('q'),('q'),('q'),('r'), +('r'),('r'),('r'),('s'),('s'),('s'),('s'),('t'),('t'),('t'),('t'),('u'),('u'), +('u'),('u'),('v'),('v'),('v'),('v'),('w'),('w'),('w'),('w'),('w'),('w'),('x'), +('x'),('x'),('y'),('y'),('y'),('y'),('z'),('z'),('z'),('z'); +CREATE TABLE t3 ( +varchar_key varchar(1) DEFAULT NULL, +KEY varchar_key (varchar_key) +) ENGINE=MyISAM DEFAULT CHARSET=latin1; +INSERT INTO t3 VALUES +(NULL),('c'),('d'),('e'),('f'),('h'),('j'),('k'),('k'),('m'),('m'),('m'), +('n'),('o'),('r'),('t'),('t'),('u'),('w'),('y'); +SELECT varchar_key FROM t3 +WHERE (SELECT varchar_key FROM t3 +WHERE (varchar_key,varchar_key) +IN (SELECT t1.varchar_key, t2 .varchar_key +FROM t1 RIGHT JOIN t2 ON t1.varchar_key +) +); +varchar_key +set optimizer_switch=@save_optimizer_switch; +DROP TABLE t1, t2, t3; +# +# Bug#46692 "Crash occurring on queries with nested FROM subqueries +# using materialization." +# +CREATE TABLE t1 ( +pk INTEGER PRIMARY KEY, +int_key INTEGER, +KEY int_key(int_key) +); +INSERT INTO t1 VALUES (10,186),(11,NULL),(12,2),(13,3),(14,0),(15,133),(16,1); +CREATE TABLE t2 ( +pk INTEGER PRIMARY KEY, +int_key INTEGER, +KEY int_key(int_key) +); +INSERT INTO t2 VALUES (1,7),(2,2); +SELECT * FROM t1 WHERE (140, 4) IN +(SELECT t2.int_key, t2 .pk FROM t2 STRAIGHT_JOIN t1 ON t2.int_key); +pk int_key +DROP TABLE t1, t2; +# +# Bug#42353 "SELECT ... WHERE oe IN (SELECT w/ LEFT JOIN) query +# causes crash." +# +CREATE TABLE t1 ( +pk INTEGER PRIMARY KEY, +int_nokey INTEGER, +int_key INTEGER, +date_key DATE, +datetime_nokey DATETIME, +varchar_nokey VARCHAR(1) +); +CREATE TABLE t2 ( +date_nokey DATE +); +CREATE TABLE t3 ( +pk INTEGER PRIMARY KEY, +int_nokey INTEGER, +date_key date, +varchar_key VARCHAR(1), +varchar_nokey VARCHAR(1), +KEY date_key (date_key) +); +SELECT date_key FROM t1 +WHERE (int_key, int_nokey) +IN (SELECT t3.int_nokey, t3.pk +FROM t2 LEFT JOIN t3 ON (t2.date_nokey < t3.date_key) +WHERE t3.varchar_key <= t3.varchar_nokey OR t3.int_nokey <= t3.pk +) +AND (varchar_nokey <> 'f' OR NOT int_key < 7); +date_key +# +# Bug#45933 "Crash in optimize_semijoin_nests on JOIN in subquery +# + AND in outer query". +# +INSERT INTO t1 VALUES (10,7,5,'2009-06-16','2002-04-10 14:25:30','w'), +(11,7,0,'0000-00-00','0000-00-00 00:00:00','s'), +(12,4,0,'2003-07-14','2006-09-14 04:01:02','y'), +(13,0,4,'2002-07-25','0000-00-00 00:00:00','c'), +(14,1,8,'2007-07-03','0000-00-00 00:00:00','q'), +(15,6,5,'2001-11-12','0000-00-00 00:00:00',''), +(16,2,9,'0000-00-00','0000-00-00 00:00:00','j'), +(29,9,1,'0000-00-00','2003-08-11 00:00:00','m'); +INSERT INTO t3 VALUES (1,9,'0000-00-00','b','b'), +(2,2,'2002-09-17','h','h'); +SELECT t1.varchar_nokey FROM t1 JOIN t3 ON t1.datetime_nokey +WHERE t1.varchar_nokey +IN (SELECT varchar_nokey FROM t1 +WHERE (pk) +IN (SELECT t3.int_nokey +FROM t3 LEFT JOIN t1 ON t1.varchar_nokey +WHERE t3.date_key BETWEEN '2008-06-07' AND '2006-06-26' + ) +); +varchar_nokey +DROP TABLE t1, t2, t3; +# +# Bug#45219 "Crash on SELECT DISTINCT query containing a +# LEFT JOIN in subquery" +# +CREATE TABLE t1 ( +pk INTEGER NOT NULL, +int_nokey INTEGER NOT NULL, +datetime_key DATETIME NOT NULL, +varchar_key VARCHAR(1) NOT NULL, +PRIMARY KEY (pk), +KEY datetime_key (datetime_key), +KEY varchar_key (varchar_key) +); +INSERT INTO t1 VALUES +(1,9,'0000-00-00 00:00:00','p'),(2,0,'2002-02-09 07:38:13','v'), +(3,8,'2001-05-03 12:08:14','t'),(4,3,'0000-00-00 00:00:00','u'), +(5,7,'2009-07-28 03:43:30','n'),(6,0,'2009-08-04 00:00:00','l'), +(7,1,'0000-00-00 00:00:00','h'),(8,9,'0000-00-00 00:00:00','u'), +(9,0,'2005-08-02 17:16:54','n'),(10,9,'2002-12-21 00:00:00','j'), +(11,0,'2005-08-15 12:37:35','k'),(12,5,'0000-00-00 00:00:00','e'), +(13,0,'2006-03-10 00:00:00','i'),(14,8,'2005-05-16 11:02:36','u'), +(15,8,'2008-11-02 00:00:00','n'),(16,5,'2006-03-15 00:00:00','b'), +(17,1,'0000-00-00 00:00:00','x'),(18,7,'0000-00-00 00:00:00',''), +(19,0,'2008-12-17 20:15:40','q'),(20,9,'0000-00-00 00:00:00','u'); +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 VALUES +(10,0,'2006-07-07 07:26:28','q'),(11,5,'2002-09-23 00:00:00','m'), +(12,7,'0000-00-00 00:00:00','j'),(13,1,'2006-06-07 00:00:00','z'), +(14,8,'2000-09-16 12:15:34','a'),(15,2,'2007-08-05 15:47:52',''), +(16,1,'0000-00-00 00:00:00','e'),(17,8,'2005-12-02 19:34:26','t'), +(18,5,'0000-00-00 00:00:00','q'),(19,4,'0000-00-00 00:00:00','b'), +(20,5,'2007-12-28 00:00:00','w'),(21,3,'2004-08-02 11:48:43','m'), +(22,0,'0000-00-00 00:00:00','x'),(23,8,'2004-04-19 12:18:43',''), +(24,0,'2009-04-27 00:00:00','w'),(25,4,'2006-10-20 14:52:15','x'), +(26,0,'0000-00-00 00:00:00','e'),(27,0,'2002-03-22 11:48:37','e'), +(28,2,'0000-00-00 00:00:00','p'),(29,0,'2001-01-04 03:55:07','x'); +CREATE TABLE t3 LIKE t1; +INSERT INTO t3 VALUES +(10,8,'2007-08-19 08:08:38','i'),(11,0,'2000-05-21 03:51:51',''); +SELECT DISTINCT datetime_key FROM t1 +WHERE (int_nokey, pk) +IN (SELECT t3.pk, t3.pk FROM t2 LEFT JOIN t3 ON t3.varchar_key) +AND pk = 9; +datetime_key +DROP TABLE t1, t2, t3; +set @@optimizer_switch=@save_optimizer_switch; +# +# BUG#49129: Wrong result with IN-subquery with join_cache_level=6 and firstmatch=off +# +CREATE TABLE t0 (a INT); +INSERT INTO t0 VALUES (0),(1),(2),(3),(4); +CREATE TABLE t1 (a INT, b INT, KEY(a)); +INSERT INTO t1 SELECT a, a from t0; +CREATE TABLE t2 (a INT, b INT, PRIMARY KEY(a)); +INSERT INTO t2 SELECT * FROM t1; +UPDATE t1 SET a=3, b=11 WHERE a=4; +UPDATE t2 SET b=11 WHERE a=3; +set @save_optimizer_switch=@@optimizer_switch; +set optimizer_switch='firstmatch=off'; +The following should use a join order of t0,t1,t2, with DuplicateElimination: +explain +SELECT * FROM t0 WHERE t0.a IN +(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t0 ALL NULL NULL NULL NULL 5 Using where; Start temporary +1 PRIMARY t1 ref a a 5 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +SELECT * FROM t0 WHERE t0.a IN +(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b); +a +0 +1 +2 +3 +set optimizer_switch=@save_optimizer_switch; +drop table t0, t1, t2; +# End +set join_cache_level=default; +show variables like 'join_cache_level'; +Variable_name Value +join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; diff --git a/mysql-test/r/table_elim.result b/mysql-test/r/table_elim.result index 6c713946b27..5c39abfc483 100644 --- a/mysql-test/r/table_elim.result +++ b/mysql-test/r/table_elim.result @@ -26,17 +26,17 @@ a explain select * from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in in order list: explain select t1.a from t1 left join t2 on t2.a=t1.a order by t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in group list: explain select t1.a from t1 left join t2 on t2.a=t1.a group by t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in the WHERE explain select t1.a from t1 left join t2 on t2.a=t1.a where t2.b < 3 or t2.b is null; id select_type table type possible_keys key key_len ref rows Extra @@ -58,7 +58,7 @@ t0 left join (t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and t3.a=t1.a) on t0.a=t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 4 100.00 -1 SIMPLE t1 ALL NULL NULL NULL NULL 4 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 100.00 Using where Warnings: Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t0` left join (`test`.`t1`) on((`test`.`t1`.`a` = `test`.`t0`.`a`)) where 1 # Elimination with aggregate functions @@ -75,7 +75,7 @@ This must not use elimination: explain select count(1) from t1 left join t2 on t2.a=t1.a group by t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using index drop table t0, t1, t2, t3; create table t0 ( id integer, primary key (id)); create table t1 ( @@ -128,7 +128,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3 This should use facts and a1 tables: explain extended select id from v1 where attr1 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using where +1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Rowid-ordered scan 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index Warnings: Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #1 @@ -136,7 +136,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` whe This should use facts, a2 and its subquery: explain extended select id from v1 where attr2 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using where +1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where; Rowid-ordered scan 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using index 3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.a2.id 2 100.00 Using index Warnings: @@ -156,7 +156,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3 This should use facts and a1 tables: explain extended select id from v2 where attr1 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using where +1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Rowid-ordered scan 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index Warnings: Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #1 @@ -164,7 +164,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` whe This should use facts, a2 and its subquery: explain extended select id from v2 where attr2 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using where +1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Rowid-ordered scan 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index 3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.f.id 2 100.00 Using index Warnings: @@ -194,7 +194,7 @@ t2.pk3=t2.pk1+1 and t2.pk2=t2.pk3+t2.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a 1 Using where This must use only t1: explain select t1.* from t1 left join t2 on t2.pk2=t1.a and t2.pk1=t2.pk2+1 and @@ -212,19 +212,19 @@ explain select t1.* from t1 left join ( t2 left join t3 on t3.pk=t2.col) on t2.col=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where explain select t1.*, t2.* from t1 left join (t2 left join t3 on t3.pk=t2.col) on t2.pk=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 Using where explain select t1.* from t1 left join ( t2 left join t3 on t3.pk=t2.col or t3.pk=t2.col) on t2.col=t1.col or t2.col=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where explain select t1.*, t2.* from t1 left join @@ -232,7 +232,7 @@ t1 left join on t2.pk=t1.col or t2.pk=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 Using where drop table t1, t2, t3; # # Check things that look like functional dependencies but really are not @@ -247,12 +247,12 @@ this must not use table elimination: explain select t1.* from t1 left join t2 on t2.a='foo' collate latin1_general_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 10 NULL 2 Using index -1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using index +1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using where; Using index this must not use table elimination: explain select t1.* from t1 left join t2 on t2.a=t1.a collate latin1_general_ci; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 10 NULL 2 Using index -1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using index +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1) drop table t1,t2; create table t1 (a int primary key); insert into t1 values (1),(2); @@ -262,12 +262,12 @@ this must not use table elimination: explain select t1.* from t1 left join t2 on t2.a=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index -1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using index +1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using where; Using index this must not use table elimination: explain select t1.* from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index -1 SIMPLE t2 index PRIMARY PRIMARY 10 NULL 2 Using index +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1) drop table t1, t2; create table t1 (a char(10) primary key); insert into t1 values ('foo'),('bar'); @@ -276,7 +276,7 @@ insert into t2 values ('foo'),('bar'); explain select t1.* from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 10 NULL 2 Using index -1 SIMPLE t2 ref a a 3 test.t1.a 2 +1 SIMPLE t2 ref a a 3 test.t1.a 2 Using where drop table t1, t2; # # check UPDATE/DELETE that look like they could be eliminated @@ -322,19 +322,19 @@ id select_type table type possible_keys key key_len ref rows Extra explain select t1.a from t1 left join t2 on t2.pk=t1.a or t2.b<t1.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Using where explain select t1.a from t1 left join t2 on t2.b<t1.b or t2.pk=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 +1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Using where explain select t1.a from t1 left join t2 on t2.pk between 10 and 20; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using where; Using index explain select t1.a from t1 left join t2 on t2.pk between 0.5 and 1.5; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using where; Using index explain select t1.a from t1 left join t2 on t2.pk between 10 and 10; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 @@ -347,7 +347,7 @@ id select_type table type possible_keys key key_len ref rows Extra explain select t1.a from t1 left join t2 on TRUE; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 index NULL PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 index NULL PRIMARY 4 NULL 2 Using where; Using index explain select t1.a from t1 left join t3 on t3.pk1=t1.a and t3.pk2 IS NULL; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 @@ -388,7 +388,7 @@ on (t2.pk=t2.c and t2.b=t1.a and t2.c=t1.b) or where t1.d=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using where explain select t1.* from @@ -405,7 +405,7 @@ select t1.* from t1 left join t2 on t2.pk=3 or t2.pk= 4; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using index +1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using where; Using index explain select t1.* from t1 left join t2 on t2.pk=3 or t2.pk= 3; @@ -416,7 +416,7 @@ select t1.* from t1 left join t2 on (t2.pk=3 and t2.b=3) or (t2.pk= 4 and t2.b=3); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where +1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan drop table t1, t2; # # LPBUG#523593: Running RQG optimizer_no_subquery crashes MariaDB @@ -560,9 +560,9 @@ JOIN t5 ON t4.f3 ON t3.f1 = t5.f5 ON t2.f4 = t3.f4 WHERE t3.f2 ; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where -1 SIMPLE t5 ref f5 f5 5 test.t3.f1 2 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL f4 NULL NULL NULL 11 Using where; Using join buffer +1 SIMPLE t5 ref f5 f5 5 test.t3.f1 2 Using where; Using index +1 SIMPLE t4 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t2 ALL f4 NULL NULL NULL 11 Using where; Using join buffer (flat, BNL join) # ^^ The above must not produce a QEP of t3,t5,t2,t4 # as that violates the "no interleaving of outer join nests" rule. DROP TABLE t1,t2,t3,t4,t5; diff --git a/mysql-test/r/table_elim_debug.result b/mysql-test/r/table_elim_debug.result index b059baffa89..ae49b1433fd 100644 --- a/mysql-test/r/table_elim_debug.result +++ b/mysql-test/r/table_elim_debug.result @@ -10,7 +10,7 @@ set optimizer_switch='table_elimination=off'; explain select t1.a from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using index set optimizer_switch='table_elimination=on'; explain select t1.a from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra diff --git a/mysql-test/r/type_date.result b/mysql-test/r/type_date.result index dab1d78ba27..8c07668cf58 100644 --- a/mysql-test/r/type_date.result +++ b/mysql-test/r/type_date.result @@ -207,6 +207,7 @@ id select_type table type possible_keys key key_len ref rows Extra Warnings: Warning 1292 Incorrect date value: '0000-00-00' for column 'a' at row 1 Warning 1292 Incorrect date value: '0000-00-00' for column 'a' at row 1 +Warning 1265 Data truncated for column 'a' at row 1 SELECT * FROM t1 WHERE a = '0000-00-00'; a 0000-00-00 @@ -214,6 +215,7 @@ a Warnings: Warning 1292 Incorrect date value: '0000-00-00' for column 'a' at row 1 Warning 1292 Incorrect date value: '0000-00-00' for column 'a' at row 1 +Warning 1265 Data truncated for column 'a' at row 1 SELECT * FROM t2 WHERE a = '0000-00-00'; a 0000-00-00 @@ -245,6 +247,7 @@ id select_type table type possible_keys key key_len ref rows Extra Warnings: Warning 1292 Incorrect date value: '1000-00-00' for column 'a' at row 1 Warning 1292 Incorrect date value: '1000-00-00' for column 'a' at row 1 +Warning 1265 Data truncated for column 'a' at row 1 SELECT * FROM t1 WHERE a = '1000-00-00'; a 1000-00-00 @@ -252,6 +255,7 @@ a Warnings: Warning 1292 Incorrect date value: '1000-00-00' for column 'a' at row 1 Warning 1292 Incorrect date value: '1000-00-00' for column 'a' at row 1 +Warning 1265 Data truncated for column 'a' at row 1 SELECT * FROM t2 WHERE a = '1000-00-00'; a 1000-00-00 diff --git a/mysql-test/r/type_datetime.result b/mysql-test/r/type_datetime.result index 1f0965a105f..d375d54d20d 100644 --- a/mysql-test/r/type_datetime.result +++ b/mysql-test/r/type_datetime.result @@ -514,10 +514,9 @@ select * from t1 where id in (select id from t1 as x1 where (t1.cur_date is null)); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables -2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE Warnings: Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1 -Note 1003 select '1' AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` where <in_optimizer>('1',<exists>(select 1 from `test`.`t1` `x1` where 0)) +Note 1003 select '1' AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` semi join (`test`.`t1` `x1`) where (('2007-04-25 18:30:22' = 0)) select * from t1 where id in (select id from t1 as x1 where (t1.cur_date is null)); id cur_date @@ -526,10 +525,9 @@ select * from t2 where id in (select id from t2 as x1 where (t2.cur_date is null)); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables -2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE Warnings: Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1 -Note 1003 select '1' AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` where <in_optimizer>('1',<exists>(select 1 from `test`.`t2` `x1` where 0)) +Note 1003 select '1' AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` semi join (`test`.`t2` `x1`) where (('2007-04-25' = 0)) select * from t2 where id in (select id from t2 as x1 where (t2.cur_date is null)); id cur_date @@ -539,11 +537,11 @@ explain extended select * from t1 where id in (select id from t1 as x1 where (t1.cur_date is null)); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where -2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Start temporary +1 PRIMARY x1 ALL NULL NULL NULL NULL 2 100.00 Using where; End temporary; Using join buffer (flat, BNL join) Warnings: Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`id`,<exists>(select 1 from `test`.`t1` `x1` where ((`test`.`t1`.`cur_date` = 0) and (<cache>(`test`.`t1`.`id`) = `test`.`x1`.`id`)))) +Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` semi join (`test`.`t1` `x1`) where ((`test`.`x1`.`id` = `test`.`t1`.`id`) and (`test`.`t1`.`cur_date` = 0)) select * from t1 where id in (select id from t1 as x1 where (t1.cur_date is null)); id cur_date @@ -551,11 +549,11 @@ explain extended select * from t2 where id in (select id from t2 as x1 where (t2.cur_date is null)); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where -2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Start temporary +1 PRIMARY x1 ALL NULL NULL NULL NULL 2 100.00 Using where; End temporary; Using join buffer (flat, BNL join) Warnings: Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1 -Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 from `test`.`t2` `x1` where ((`test`.`t2`.`cur_date` = 0) and (<cache>(`test`.`t2`.`id`) = `test`.`x1`.`id`)))) +Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` semi join (`test`.`t2` `x1`) where ((`test`.`x1`.`id` = `test`.`t2`.`id`) and (`test`.`t2`.`cur_date` = 0)) select * from t2 where id in (select id from t2 as x1 where (t2.cur_date is null)); id cur_date diff --git a/mysql-test/r/union.result b/mysql-test/r/union.result index d66db1ad211..4bb1346d2fb 100644 --- a/mysql-test/r/union.result +++ b/mysql-test/r/union.result @@ -542,12 +542,12 @@ explain (select * from t1 where a=1 and b=10) union (select straight_join t1.a,t id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 UNION t1 index PRIMARY PRIMARY 4 NULL 4 Using index -2 UNION t2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index; Using join buffer +2 UNION t2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index; Using join buffer (flat, BNL join) NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL explain (select * from t1 where a=1) union (select * from t1 where b=1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 -2 UNION t1 ref b b 5 const 1 Using where +2 UNION t1 ref b b 5 const 1 NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL drop table t1,t2; create table t1 ( id int not null auto_increment, primary key (id) ,user_name text ); @@ -1635,7 +1635,7 @@ ORDER BY (SELECT a FROM t2 WHERE b = 12); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 UNION t1 ALL NULL NULL NULL NULL 2 100.00 -3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #2 diff --git a/mysql-test/r/variables.result b/mysql-test/r/variables.result index b62fc7e0a8c..023ced5d914 100644 --- a/mysql-test/r/variables.result +++ b/mysql-test/r/variables.result @@ -973,6 +973,7 @@ tmpdir # select * from information_schema.session_variables where variable_name like 'tmpdir'; VARIABLE_NAME VARIABLE_VALUE TMPDIR # +set sort_buffer_size=1024*8; select @@ssl_ca, @@ssl_capath, @@ssl_cert, @@ssl_cipher, @@ssl_key; @@ssl_ca @@ssl_capath @@ssl_cert @@ssl_cipher @@ssl_key # # # # # @@ -1534,18 +1535,51 @@ ERROR HY000: Cannot drop default keycache SET @@global.key_cache_block_size=0; Warnings: Warning 1292 Truncated incorrect key_cache_block_size value: '0' +SET @@global.max_binlog_cache_size=DEFAULT; +SET @@global.max_join_size=DEFAULT; +SET @@global.key_buffer_size=@kbs; +SET @@global.key_cache_block_size=@kcbs; select @@max_long_data_size; @@max_long_data_size 1048576 # -# Bug#11766424 59527: DECIMAL_BIN_SIZE: ASSERTION `SCALE >= 0 && PRECISION > 0 && SCALE <= PRE +# Bug#11766424 59527: +# Assert in DECIMAL_BIN_SIZE: +# `SCALE >= 0 && PRECISION > 0 && SCALE <= PRE +# This test also exposed a bug with sql_buffer_result # CREATE TABLE t1(f1 DECIMAL(1,1) UNSIGNED); INSERT INTO t1 VALUES (0.2),(0.1); -SELECT 1 FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE @a=f1); +set @a=NULL; +set sql_buffer_result=0; +SELECT 1 as 'one' FROM t1 GROUP BY @a:= ROUND(f1); +one +1 +explain SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0); +one +1 +SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE @a=f1); +one +1 +set sql_buffer_result=1; +explain SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where; Using temporary +SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0); +one +1 +1 +SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE @a=f1); +one 1 1 DROP TABLE t1; +set sql_buffer_result=0; CREATE TABLE t1 AS SELECT @a:= CAST(1 AS UNSIGNED) AS a; SHOW CREATE TABLE t1; Table Create Table @@ -1553,8 +1587,4 @@ t1 CREATE TABLE `t1` ( `a` int(1) unsigned NOT NULL DEFAULT '0' ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; -SET @@global.max_binlog_cache_size=DEFAULT; -SET @@global.max_join_size=DEFAULT; -SET @@global.key_buffer_size=@kbs; -SET @@global.key_cache_block_size=@kcbs; End of 5.1 tests diff --git a/mysql-test/r/view.result b/mysql-test/r/view.result index 80f19bd2fa9..d02a0df455d 100644 --- a/mysql-test/r/view.result +++ b/mysql-test/r/view.result @@ -1417,8 +1417,8 @@ a a b explain extended select * from t3 left join v3 on (t3.a = v3.a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`t1` left join `test`.`t2` on(((`test`.`t1`.`a` = `test`.`t3`.`a`) and (`test`.`t2`.`a` = `test`.`t3`.`a`)))) on((`test`.`t1`.`a` = `test`.`t3`.`a`)) where 1 create view v1 (a) as select a from t1; @@ -1432,8 +1432,8 @@ a a b explain extended select * from t3 left join v4 on (t3.a = v4.a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 -1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where Warnings: Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`t1` left join (`test`.`t2`) on(((`test`.`t1`.`a` = `test`.`t3`.`a`) and (`test`.`t2`.`a` = `test`.`t3`.`a`)))) on((`test`.`t1`.`a` = `test`.`t3`.`a`)) where 1 prepare stmt1 from "select * from t3 left join v4 on (t3.a = v4.a);"; @@ -2134,12 +2134,12 @@ INSERT INTO t1 VALUES (2, 'foo2'); INSERT INTO t1 VALUES (1, 'foo1'); SELECT * FROM v1; id f -1 foo1 2 foo2 +1 foo1 SELECT * FROM v1; id f -1 foo1 2 foo2 +1 foo1 DROP VIEW v1; DROP TABLE t1; CREATE TABLE t1 (pk int PRIMARY KEY, b int); @@ -2344,15 +2344,15 @@ CREATE VIEW v2 AS SELECT t3.* FROM t1,t3 WHERE t1.a=t3.a; EXPLAIN SELECT t1.* FROM t1 JOIN t2 WHERE t1.a=t2.a AND t1.b=t2.b AND t1.a=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref a a 5 const 1 Using where; Using index -1 SIMPLE t2 ref a a 10 const,test.t1.b 2 Using where; Using index +1 SIMPLE t2 ref a a 10 const,test.t1.b 1 Using index EXPLAIN SELECT * FROM v1 WHERE a=1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ref a a 5 const 1 Using where; Using index -1 SIMPLE t2 ref a a 10 const,test.t1.b 2 Using where; Using index +1 SIMPLE t2 ref a a 10 const,test.t1.b 1 Using index EXPLAIN SELECT * FROM v2 WHERE a=1; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a a 5 const 1 Using where; Using index -1 SIMPLE t3 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t1 ref a a 5 const 1 Using index +1 SIMPLE t3 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) DROP VIEW v1,v2; DROP TABLE t1,t2,t3; create table t1 (f1 int); @@ -3909,3 +3909,232 @@ DROP TABLE t1; # ----------------------------------------------------------------- # -- End of 5.1 tests. # ----------------------------------------------------------------- +# +# Bug #59696 Optimizer does not use equalities for conditions over view +# +CREATE TABLE t1 (a int NOT NULL); +INSERT INTO t1 VALUES +(9), (2), (8), (1), (3), (4), (2), (5), +(9), (2), (8), (1), (3), (4), (2), (5); +CREATE TABLE t2 (pk int PRIMARY KEY, c int NOT NULL); +INSERT INTO t2 VALUES +(9,90), (16, 160), (11,110), (1,10), (18,180), (2,20), +(14,140), (15, 150), (12,120), (3,30), (17,170), (19,190); +EXPLAIN EXTENDED +SELECT t1.a,t2.c FROM t1,t2 WHERE t2.pk = t1.a AND t2.pk > 8; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 16 100.00 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 8)) +FLUSH STATUS; +SELECT t1.a,t2.c FROM t1,t2 WHERE t2.pk = t1.a AND t2.pk > 8; +a c +9 90 +9 90 +SHOW STATUS LIKE 'Handler_read_%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 1 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 17 +CREATE VIEW v AS SELECT * FROM t2; +EXPLAIN EXTENDED +SELECT t1.a,v.c FROM t1,v WHERE v.pk = t1.a AND v.pk > 8; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 16 100.00 Using where +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 8)) +FLUSH STATUS; +SELECT t1.a,v.c FROM t1,v WHERE v.pk = t1.a AND v.pk > 8; +a c +9 90 +9 90 +SHOW STATUS LIKE 'Handler_read_%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 1 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 17 +DROP VIEW v; +DROP TABLE t1, t2; +# +# Bug#702403: crash with multiple equalities and a view +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (10); +CREATE TABLE t2 (pk int PRIMARY KEY, b int, INDEX idx (b)); +INSERT INTO t2 VALUES (1,2), (3,4); +CREATE TABLE t3 (pk int PRIMARY KEY, b int, INDEX idx (b)); +INSERT INTO t3 VALUES (1,2), (3,4); +CREATE VIEW v1 AS SELECT * FROM t1; +EXPLAIN +SELECT * FROM v1, t2, t3 +WHERE t3.pk = v1.a AND t2.b = 1 AND t2.b = t3.pk AND v1.a BETWEEN 2 AND 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +SELECT * FROM v1, t2, t3 +WHERE t3.pk = v1.a AND t2.b = 1 AND t2.b = t3.pk AND v1.a BETWEEN 2 AND 5; +a pk b pk b +DROP VIEW v1; +DROP TABLE t1, t2, t3; +# +# Bug#717577: substitution for best field in a query over a view and +# with OR in the WHERE condition +# +create table t1 (a int, b int); +insert into t1 values (2,4), (1,3); +create table t2 (c int); +insert into t2 values (6), (4), (1), (3), (8), (3), (4), (2); +select * from t1,t2 where t2.c=t1.a and t2.c < 3 or t2.c=t1.b and t2.c >=4; +a b c +2 4 4 +1 3 1 +2 4 4 +2 4 2 +explain extended +select * from t1,t2 where t2.c=t1.a and t2.c < 3 or t2.c=t1.b and t2.c >=4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t2`.`c` = `test`.`t1`.`a`) and (`test`.`t1`.`a` < 3)) or ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t1`.`b` >= 4))) +create view v1 as select * from t2; +select * from t1,v1 where v1.c=t1.a and v1.c < 3 or v1.c=t1.b and v1.c >=4; +a b c +2 4 4 +1 3 1 +2 4 4 +2 4 2 +explain extended +select * from t1,v1 where v1.c=t1.a and v1.c < 3 or v1.c=t1.b and v1.c >=4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t2`.`c` = `test`.`t1`.`a`) and (`test`.`t1`.`a` < 3)) or ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t1`.`b` >= 4))) +create view v2 as select * from v1; +select * from t1,v2 where v2.c=t1.a and v2.c < 3 or v2.c=t1.b and v2.c >=4; +a b c +2 4 4 +1 3 1 +2 4 4 +2 4 2 +explain extended +select * from t1,v2 where v2.c=t1.a and v2.c < 3 or v2.c=t1.b and v2.c >=4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t2`.`c` = `test`.`t1`.`a`) and (`test`.`t1`.`a` < 3)) or ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t1`.`b` >= 4))) +create view v3 as select * from t1; +select * from v3,v2 where v2.c=v3.a and v2.c < 3 or v2.c=v3.b and v2.c >=4; +a b c +2 4 4 +1 3 1 +2 4 4 +2 4 2 +explain extended +select * from v3,v2 where v2.c=v3.a and v2.c < 3 or v2.c=v3.b and v2.c >=4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t2`.`c` = `test`.`t1`.`a`) and (`test`.`t1`.`a` < 3)) or ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t1`.`b` >= 4))) +drop view v1,v2,v3; +drop table t1,t2; +# +# Bug#724942: substitution of the constant into a view field +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (2), (9), (9), (6), (5), (4), (7); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM v1 WHERE a > -1 OR a > 6 AND a = 3; +a +2 +9 +9 +6 +5 +4 +7 +EXPLAIN EXTENDED +SELECT * FROM v1 WHERE a > -1 OR a > 6 AND a = 3; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > -(1)) +SELECT * FROM v1 WHERE a > -1 OR a AND a = 0; +a +2 +9 +9 +6 +5 +4 +7 +EXPLAIN EXTENDED +SELECT * FROM v1 WHERE a > -1 OR a AND a = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > -(1)) +CREATE VIEW v2 AS SELECT * FROM v1; +SELECT * FROM v2 WHERE a > -1 OR a AND a = 0; +a +2 +9 +9 +6 +5 +4 +7 +EXPLAIN EXTENDED +SELECT * FROM v2 WHERE a > -1 OR a AND a = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 7 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > -(1)) +DROP VIEW v1,v2; +DROP TABLE t1; +CREATE TABLE t1 (a varchar(10), KEY (a)) ; +INSERT INTO t1 VALUES +('DD'), ('ZZ'), ('ZZ'), ('KK'), ('FF'), ('HH'),('MM'); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM v1 WHERE a > 'JJ' OR a <> 0 AND a = 'VV'; +a +KK +MM +ZZ +ZZ +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: 'VV' +EXPLAIN EXTENDED +SELECT * FROM v1 WHERE a > 'JJ' OR a <> 0 AND a = 'VV'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 range a a 13 NULL 4 100.00 Using where; Using index +Warnings: +Warning 1292 Truncated incorrect DOUBLE value: 'VV' +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > 'JJ') +SELECT * FROM v1 WHERE a > 'JJ' OR a AND a = 'VV'; +a +KK +MM +ZZ +ZZ +Warnings: +Warning 1292 Truncated incorrect INTEGER value: 'VV' +EXPLAIN EXTENDED +SELECT * FROM v1 WHERE a > 'JJ' OR a AND a = 'VV'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 range a a 13 NULL 4 100.00 Using where; Using index +Warnings: +Warning 1292 Truncated incorrect INTEGER value: 'VV' +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > 'JJ') +DROP VIEW v1; +DROP TABLE t1; diff --git a/mysql-test/r/xa_binlog.result b/mysql-test/r/xa_binlog.result new file mode 100644 index 00000000000..3ce64953902 --- /dev/null +++ b/mysql-test/r/xa_binlog.result @@ -0,0 +1,32 @@ +CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB; +SET binlog_format= mixed; +RESET MASTER; +XA START 'xatest'; +INSERT INTO t1 VALUES (1); +XA END 'xatest'; +XA PREPARE 'xatest'; +XA COMMIT 'xatest'; +XA START 'xatest'; +INSERT INTO t1 VALUES (2); +XA END 'xatest'; +XA COMMIT 'xatest' ONE PHASE; +BEGIN; +INSERT INTO t1 VALUES (3); +COMMIT; +SELECT * FROM t1 ORDER BY a; +a +1 +2 +3 +SHOW BINLOG EVENTS LIMIT 1,9; +Log_name Pos Event_type Server_id End_log_pos Info +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; INSERT INTO t1 VALUES (1) +master-bin.000001 # Query 1 # COMMIT +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; INSERT INTO t1 VALUES (2) +master-bin.000001 # Query 1 # COMMIT +master-bin.000001 # Query 1 # BEGIN +master-bin.000001 # Query 1 # use `test`; INSERT INTO t1 VALUES (3) +master-bin.000001 # Xid 1 # COMMIT /* xid=XX */ +DROP TABLE t1; |