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

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Merge 5.3-mwl89 into 5.3 main.

There is one remaining test failure in this merge:
innodb_mysql_lock2. All other tests have been checked to
deliver the same results/explains as 5.3-mwl89, including
the few remaining wrong results.
This commit is contained in:
unknown
2010-11-05 14:42:58 +02:00
parent 2dc2098e59 9f2bddbd80
commit bc7369b74b
26 changed files with 5814 additions and 801 deletions
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2
sql/sql_class.cc
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@ -2656,6 +2656,7 @@ 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 */
@ -3092,6 +3093,7 @@ void TMP_TABLE_PARAM::init()
table_charset= 0;
precomputed_group_by= 0;
bit_fields_as_long= 0;
materialized_subquery= 0;
skip_create_table= 0;
DBUG_VOID_RETURN;
}