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MWL#182: Explain running statements

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- Further progress with the code
- Testcases.
This commit is contained in:
Sergey Petrunya
2011-08-24 14:41:13 +04:00
parent 7e66213444
commit 84cb5de047
6 changed files with 107 additions and 13 deletions
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17
sql/sql_select.cc
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@ -2019,6 +2019,17 @@ JOIN::save_join_tab()
}
void JOIN::exec()
{
/*
Enable SHOW EXPLAIN only if we're in the top-level query.
*/
thd->apc_target.enable();
exec_inner();
thd->apc_target.disable();
}
/**
Exec select.
@ -2030,8 +2041,8 @@ JOIN::save_join_tab()
@todo
When can we have here thd->net.report_error not zero?
*/
void
JOIN::exec()
void JOIN::exec_inner()
{
List<Item> *columns_list= &fields_list;
int tmp_error;
@ -2894,9 +2905,7 @@ mysql_select(THD *thd, Item ***rref_pointer_array,
if (thd->is_error())
goto err;
thd->apc_target.enable();
join->exec();
thd->apc_target.disable();
if (thd->cursor && thd->cursor->is_open())
{