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| author | unknown <timour@askmonty.org> | 2012-06-05 17:25:10 +0300 |
|---|---|---|
| committer | unknown <timour@askmonty.org> | 2012-06-05 17:25:10 +0300 |
| commit | f1ab00891ad050711557c6cdc62b17fff896aed9 (patch) | |
| tree | 31e8c967b17eece8c13679d9828ce7a822c7c616 /mysql-test/r/subselect_mat_cost_bugs.result | |
| parent | 265d5aaa2e240288fff98e7c129cf441728152f8 (diff) | |
| download | mariadb-git-f1ab00891ad050711557c6cdc62b17fff896aed9.tar.gz | |
Fixed bug lp:1000649
Analysis:
When the method JOIN::choose_subquery_plan() decided to apply
the IN-TO-EXISTS strategy, it set the unit and select_lex
uncacheable flag to UNCACHEABLE_DEPENDENT_INJECTED unconditionally.
As result, even if IN-TO-EXISTS injected non-correlated predicates,
the subquery was still treated as correlated.
Solution:
Set the subquery as correlated only if the injected predicate(s) depend
on the outer query.
Diffstat (limited to 'mysql-test/r/subselect_mat_cost_bugs.result')
| -rw-r--r-- | mysql-test/r/subselect_mat_cost_bugs.result | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/r/subselect_mat_cost_bugs.result b/mysql-test/r/subselect_mat_cost_bugs.result index a8fadfe43bd..379d376129c 100644 --- a/mysql-test/r/subselect_mat_cost_bugs.result +++ b/mysql-test/r/subselect_mat_cost_bugs.result @@ -124,7 +124,7 @@ FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1 WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 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 Impossible WHERE noticed after reading const tables +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables SELECT t1.* FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1 WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 FROM t2 ); |