diff options
Diffstat (limited to 'mysql-test/r/join_outer_jcl6.result')
| -rw-r--r-- | mysql-test/r/join_outer_jcl6.result | 227 |
1 files changed, 189 insertions, 38 deletions
diff --git a/mysql-test/r/join_outer_jcl6.result b/mysql-test/r/join_outer_jcl6.result index 1aff97ed4af..69f7052235b 100644 --- a/mysql-test/r/join_outer_jcl6.result +++ b/mysql-test/r/join_outer_jcl6.result @@ -1,3 +1,8 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='optimize_join_buffer_size=on'; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; +set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; set join_cache_level=6; show variables like 'join_cache_level'; Variable_name Value @@ -99,7 +104,7 @@ id select_type table type possible_keys key key_len ref rows Extra 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 +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 @@ -316,11 +321,11 @@ 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 ALL NULL NULL NULL NULL 3 Using where; Not exists; Using join buffer +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t2 hash_ALL NULL #hash#$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 @@ -336,11 +341,11 @@ 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 ALL NULL NULL NULL NULL 3 Using where; Not exists; Using join buffer +1 SIMPLE t2 hash_ALL NULL #hash#$hj 2 test.t1.id 3 Using where; Not exists; Using join buffer (flat, BNLH join) explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 SIMPLE t2 hash_ALL NULL #hash#$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 @@ -692,8 +697,8 @@ 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 Using where; Using join buffer -1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer +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), @@ -742,13 +747,13 @@ explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from 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 +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 +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; @@ -768,7 +773,7 @@ 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 +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; @@ -1135,15 +1140,15 @@ a b a b 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 +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 +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 +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; @@ -1232,7 +1237,7 @@ 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 +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 @@ -1311,7 +1316,7 @@ 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`.`t2` 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`.`t2` 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 @@ -1337,14 +1342,14 @@ 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 Using where; Using join buffer -1 SIMPLE tt3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt4 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt5 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt6 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt8 ALL NULL NULL NULL NULL 2 Using where; Using join buffer -1 SIMPLE tt9 ALL NULL NULL NULL NULL 2 Using join buffer +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; # @@ -1363,8 +1368,8 @@ 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 Using where; Using join buffer +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 @@ -1381,13 +1386,13 @@ 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 -1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer -1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer -1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer -1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer +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 +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` <> 0) 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 @@ -1398,13 +1403,13 @@ 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 -1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index; Using join buffer -1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer -1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer -1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer +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 +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` <> 0) and 1)) left join `test`.`t1` `jt1` on(1) where 1 DROP TABLE t1; # # Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field @@ -1689,7 +1694,7 @@ 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`,<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` +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` select t2.pk, (select t3.pk+if(isnull(t4.pk),0,t4.pk) from t3 left join t4 on t4.pk=t3.pk @@ -1700,8 +1705,154 @@ 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_last 0 +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_last 0 +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 +# +# LP bug #813447: LEFT JOIN with single-row inner table and +# a subquery in ON expression +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (0); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (0); +CREATE TABLE t3 (a int); +INSERT INTO t3 VALUES (0), (0); +SELECT t2.a FROM t1 LEFT JOIN t2 ON (6) IN (SELECT a FROM t3); +a +NULL +EXPLAIN EXTENDED +SELECT t2.a FROM t1 LEFT JOIN t2 ON (6) IN (SELECT a FROM t3); +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 +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 100.00 Using where +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where 1 +DROP TABLE t1,t2,t3; +# +# LP bug #817384 Wrong result with outer join + subquery in ON +# clause +unique key +# +CREATE TABLE t1 ( c int NOT NULL , b char(1) NOT NULL ) ; +INSERT INTO t1 VALUES (1,'b'); +CREATE TABLE t2 ( a int NOT NULL , b char(1) NOT NULL , PRIMARY KEY (a)) ; +INSERT INTO t2 VALUES (1,'a'); +create table t3 (c1 char(1), c2 char(2)); +insert into t3 values ('c','d'); +insert into t3 values ('c','d'); +EXPLAIN SELECT t2.b +FROM t1 LEFT JOIN t2 ON t1.c = t2.a AND ( t2.b , t1.b ) IN (SELECT * 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 eq_ref PRIMARY PRIMARY 4 const 1 Using where +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where +SELECT t2.b +FROM t1 LEFT JOIN t2 ON t1.c = t2.a AND ( t2.b , t1.b ) IN (SELECT * from t3); +b +NULL +EXPLAIN SELECT t2.b +FROM t1 LEFT JOIN t2 ON (t2.b) IN (SELECT c2 from t3) AND t2.a = 1; +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 const PRIMARY PRIMARY 4 const 1 Using where +2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where +SELECT t2.b +FROM t1 LEFT JOIN t2 ON (t2.b) IN (SELECT c2 from t3) AND t2.a = 1; +b +NULL +DROP TABLE t1,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; |