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MWL#90: Subqueries: Inside-out execution for non-semijoin materialized

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subqueries that are AND-parts of the WHERE
- First code (needs cleanup).
This commit is contained in:
Sergey Petrunya 2010-04-06 00:16:45 +04:00
commit 2775f80f7d
25 changed files with 964 additions and 444 deletions
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4
mysql-test/t/subselect_mat.test
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@ -829,8 +829,12 @@ select min(a1) from t1 where 7 in (select b1 from t2);
# This is the only correct result of all four queries. This difference is
# filed as BUG#40037.
set @@optimizer_switch='default,materialization=off';
-- echo # with MariaDB and MWL#90, this particular case is solved:
explain select min(a1) from t1 where 7 in (select b1 from t2);
select min(a1) from t1 where 7 in (select b1 from t2);
-- echo # but when we go around MWL#90 code, the problem still shows up:
explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
drop table t1,t2;
#