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Merge branch '10.1' of ../10.1-mdev334 into 10.1

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This commit is contained in:
Igor Babaev
2014-10-17 14:06:54 -07:00
parent aa0fd5ca53 a4d1783aae
commit ec89abfef4
5 changed files with 30 additions and 2 deletions
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10
mysql-test/r/union.result
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@ -2005,3 +2005,13 @@ FOUND_ROWS()
1
DROP TABLE t1, t2;
# End of WL1763 tests
#
# Bug mdev-6874: crash with UNION ALL in a subquery
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (1,1), (2,8);
SELECT * FROM t1 t1_1 LEFT JOIN t1 t1_2 ON ( t1_2.b = t1_1.a )
WHERE t1_2.b NOT IN ( SELECT 4 UNION ALL SELECT 5 );
a b a b
1 1 1 1
DROP TABLE t1;

12
mysql-test/t/union.test
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@ -1417,3 +1417,15 @@ DROP TABLE t1, t2;
--echo # End of WL1763 tests
--echo #
--echo # Bug mdev-6874: crash with UNION ALL in a subquery
--echo #
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (1,1), (2,8);
SELECT * FROM t1 t1_1 LEFT JOIN t1 t1_2 ON ( t1_2.b = t1_1.a )
WHERE t1_2.b NOT IN ( SELECT 4 UNION ALL SELECT 5 );
DROP TABLE t1;

4
sql/item_subselect.cc
View File

@ -3395,7 +3395,9 @@ bool subselect_union_engine::is_executed() const
bool subselect_union_engine::no_rows()
{
/* Check if we got any rows when reading UNION result from temp. table: */
return MY_TEST(!unit->fake_select_lex->join->send_records);
return MY_TEST(!(unit->fake_select_lex ?
unit->fake_select_lex->join->send_records :
((select_union_direct *) result)->send_records));
}

5
sql/sql_class.h
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@ -4431,11 +4431,13 @@ 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
{
@ -4466,6 +4468,7 @@ 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)

1
sql/sql_union.cc
View File

@ -247,6 +247,7 @@ int select_union_direct::send_data(List<Item> &items)
return false;
}
send_records++;
fill_record(thd, table, table->field, items, true, false);
if (thd->is_error())
return true; /* purecov: inspected */