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fixed zero result case for group functions in subquery (Bug #3505)

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fixed LIMIT 0 for zero rows optimisation
This commit is contained in:
bell@sanja.is.com.ua
2004-05-02 13:03:49 +03:00
parent 809f040617
commit 25d815cde6
3 changed files with 34 additions and 0 deletions
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11
sql/sql_select.cc
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@ -1051,6 +1051,13 @@ JOIN::reinit()
if (tmp_join)
restore_tmp();
if (sum_funcs)
{
Item_sum *func, **func_ptr= sum_funcs;
while ((func= *(func_ptr++)))
func->clear();
}
DBUG_RETURN(0);
}
@ -1115,6 +1122,7 @@ JOIN::exec()
if (zero_result_cause)
{
(void) return_zero_rows(this, result, tables_list, fields_list,
do_send_rows &&
tmp_table_param.sum_func_count != 0 &&
!group_list,
select_options,
@ -5666,6 +5674,9 @@ do_select(JOIN *join,List<Item> *fields,TABLE *table,Procedure *procedure)
if (!(error=(*end_select)(join,join_tab,0)) || error == -3)
error=(*end_select)(join,join_tab,1);
}
else if (join->do_send_rows && join->tmp_table_param.sum_func_count != 0 &&
!join->group_list)
error= join->result->send_data(*join->fields);
}
else
{