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MWL#89: Cost-based choice between Materialization and IN->EXISTS transformation

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Fixes for multiple problems/bugs/test failures that resulted from moving
subquery optimization from the execution phase to the optimization phase.
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unknown
2010-09-05 18:43:47 +03:00
parent aa195b2570
commit 18ad3bdc2f
14 changed files with 528 additions and 269 deletions
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sql/sql_class.cc
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@ -2630,6 +2630,7 @@ void Query_arena::free_items()
for (; free_list; free_list= next)
{
next= free_list->next;
DBUG_ASSERT(free_list != next);
free_list->delete_self();
}
/* Postcondition: free_list is 0 */