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Don't recalculate conditions that have already been checked.

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This fixes the wrong result in tests like compress, join, join_cache, greedy_optimizer and select_pkeycache
This commit is contained in:
Michael Widenius
2011-01-14 01:26:20 +02:00
parent b0be3e2c68
commit c2e219fb1e
1 changed files with 2 additions and 0 deletions
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2
sql/sql_select.cc
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@@ -15045,6 +15045,8 @@ make_cond_for_table_from_pred(Item *root_cond, Item *cond,
bool retain_ref_cond)
{
if (used_table && !(cond->used_tables() & used_table))
return (COND*) 0; // Already checked
if (cond->type() == Item::COND_ITEM)
{
if (((Item_cond*) cond)->functype() == Item_func::COND_AND_FUNC)