diff options
Diffstat (limited to 'mysql-test/r/table_elim.result')
| -rw-r--r-- | mysql-test/r/table_elim.result | 81 |
1 files changed, 56 insertions, 25 deletions
diff --git a/mysql-test/r/table_elim.result b/mysql-test/r/table_elim.result index 6da1e716efa..3ad02914ca8 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 @@ -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 ( @@ -117,58 +117,58 @@ t2 where id=f.id); This should use one table: explain select id from v1 where id=2; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY f const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE f const PRIMARY PRIMARY 4 const 1 Using index This should use one table: explain extended select id from v1 where id in (1,2,3,4); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index +1 SIMPLE f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index Warnings: -Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3,4)) 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 index condition; Using MRR -1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index +1 SIMPLE a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using where +1 SIMPLE 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 +Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` where ((`f`.`id` = `a1`.`id`) and (`a1`.`attr1` between 12 and 14)) 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 index condition; Using where; Using MRR -1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using index +1 SIMPLE a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using where +1 SIMPLE 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: -Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t2` `a2` where ((`f`.`id` = `a2`.`id`) and (`a2`.`attr2` between 12 and 14) and (`a2`.`fromdate` = (select max(`test`.`t2`.`fromdate`) from `test`.`t2` where (`test`.`t2`.`id` = `a2`.`id`)))) This should use one table: explain select id from v2 where id=2; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY f const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE f const PRIMARY PRIMARY 4 const 1 Using index This should use one table: explain extended select id from v2 where id in (1,2,3,4); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index +1 SIMPLE f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index Warnings: -Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3,4)) 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 index condition; Using MRR -1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index +1 SIMPLE a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using where +1 SIMPLE 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 +Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` where ((`f`.`id` = `a1`.`id`) and (`a1`.`attr1` between 12 and 14)) 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 index condition; Using MRR -1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index +1 SIMPLE a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using where +1 SIMPLE 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: -Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #1 +Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2 Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t2` `a2` where ((`f`.`id` = `a2`.`id`) and (`a2`.`attr2` between 12 and 14) and (`a2`.`fromdate` = (select max(`test`.`t2`.`fromdate`) from `test`.`t2` where (`test`.`t2`.`id` = `f`.`id`)))) drop view v1, v2; drop table t0, t1, t2; @@ -217,7 +217,7 @@ 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) @@ -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 @@ -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; Using MRR +1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where drop table t1, t2; # # LPBUG#523593: Running RQG optimizer_no_subquery crashes MariaDB @@ -535,3 +535,34 @@ HAVING field4 != 6; field1 field2 field3 field4 field5 field6 drop table t0,t1,t2,t3,t4,t5,t6; +# +# BUG#675118: Elimination of a table results in an invalid execution plan +# +CREATE TABLE t1 (f1 int(11), PRIMARY KEY (f1)) ; +CREATE TABLE t2 (f4 varchar(1024), KEY (f4)) ; +Warnings: +Warning 1071 Specified key was too long; max key length is 1000 bytes +INSERT IGNORE INTO t2 VALUES ('xcddwntkbxyorzdv'), +('cnxxcddwntkbxyor'),('r'),('r'), ('did'),('I'),('when'), +('hczkfqjeggivdvac'),('e'),('okay'),('up'); +CREATE TABLE t3 (f4 varchar(1024), f1 int(11), f2 int(11)) ; +INSERT IGNORE INTO t3 VALUES ('f','4','0'),('n','5','-996540416'); +CREATE TABLE t4 (f1 int(11), f3 varchar(10)) ; +INSERT IGNORE INTO t4 VALUES ('8','n'),('9','nwzcerzsgx'),('10','c'); +CREATE TABLE t5 (f5 int(11), KEY (f5)) ; +EXPLAIN +SELECT t3.f2 +FROM t2 +LEFT JOIN t3 +LEFT JOIN t4 +LEFT JOIN t1 ON t4.f1 = t1.f1 +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 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; |