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Fixed bug mdev-6874.

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The method subselect_union_engine::no_rows() must take
into account the fact that now unit->fake_select_lex is
NULL for for select_union_direct objects.
This commit is contained in:
Igor Babaev
2014-10-17 12:59:28 -07:00
parent 3c4bb0e872
commit a4d1783aae
5 changed files with 30 additions and 2 deletions
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5
sql/sql_class.h
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@ -4397,11 +4397,13 @@ private:
ha_rows limit;
public:
/* Number of rows in the union */
ha_rows send_records;
select_union_direct(select_result *result, SELECT_LEX *last_select_lex)
:result(result), last_select_lex(last_select_lex),
done_send_result_set_metadata(false), done_initialize_tables(false),
limit_found_rows(0)
{}
{ send_records= 0; }
bool change_result(select_result *new_result);
uint field_count(List<Item> &fields) const
{
@ -4432,6 +4434,7 @@ public:
and for the results of subquery engines
(select_<something>_subselect).
*/
send_records= 0;
DBUG_ASSERT(false); /* purecov: inspected */
}
void set_thd(THD *thd_arg)