7 Commits

Author	SHA1	Message	Date
Sergey Petrunya	62bf7f6124	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE ... - Code cleanu. - Make MWL#90 code require @@optimizer_switch='semijoin=on' - Update test results with the above - Fork subselect_mat.test - we want to check both semi-join materialization, which now has broader scope and non-semijoin materialization.	2010-05-25 10:32:15 +04:00
Sergey Petrunya	5a53be655c	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE ... - Merge into 5.3-subqueries	2010-05-24 15:24:20 +04:00
Sergey Petrunya	f46c5de011	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized ... subqueries that are AND-parts of the WHERE - Make test results handle same-cost QEP races	2010-04-06 14:35:33 +04:00
unknown	3b05fc78e5	Fixed a problem where the temp table of a materialized subquery ... was not cleaned up between PS re-executions. The reason was two-fold: - a merge with mysql-6.0 missed select_union::cleanup() that should have cleaned up the temp table, and - the subclass of select_union used by materialization didn't call the base class cleanup() method.	2010-04-06 00:15:15 +03:00
Sergey Petrunya	2775f80f7d	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized ... subqueries that are AND-parts of the WHERE - First code (needs cleanup).	2010-04-06 00:16:45 +04:00
Sergey Petrunya	02e9fa62e7	BUG#45174: XOR in subqueries produces differing results in 5.1 and 5.4 ... BUG#50019: Wrong result for IN-subquery with materialization - Fix equality substitution in presense of semi-join materialization, lookup and scan variants (started off from fix by Evgen Potemkin, then modified it to work in all cases)	2010-03-13 23:04:52 +03:00
Sergey Petrunya	b83cb52e9e	Backport of subquery optimizations to 5.3. ... There are still test failures because of: - Wrong query results in outer join + semi join - EXPLAIN output differences	2010-01-17 17:51:10 +03:00