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fixed bug of multi-level EXPLAIN

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This commit is contained in:
bell@sanja.is.com.ua 2002-10-13 14:25:16 +03:00
commit d9f998164d
7 changed files with 25 additions and 4 deletions
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5
sql/item_subselect.cc
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@ -212,7 +212,7 @@ subselect_single_select_engine::subselect_single_select_engine(THD *thd,
select_subselect *result,
Item_subselect *item):
subselect_engine(thd, item, result),
executed(0), optimized(0)
prepared(0), optimized(0), executed(0)
{
select_lex= select;
SELECT_LEX_UNIT *unit= select_lex->master_unit();
@ -251,6 +251,9 @@ subselect_union_engine::subselect_union_engine(THD *thd,
int subselect_single_select_engine::prepare()
{
if (prepared)
return 0;
prepared= 1;
SELECT_LEX *save_select= thd->lex.select;
thd->lex.select= select_lex;
if(join->prepare((TABLE_LIST*) select_lex->table_list.first,