mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-05-15 19:37:16 +02:00
Code Issues Projects Releases Packages Wiki Activity

Fixed bug #38191.

Browse source 
Calling List<Cached_item>::delete_elements for the same list twice
caused a crash of the server in the function JOIN::cleaunup.
Ensured that delete_elements() in JOIN::cleanup would be called only once.


mysql-test/r/subselect.result:
  Added a test case for bug #38191.
mysql-test/t/subselect.test:
  Added a test case for bug #38191.
sql/sql_select.cc:
  Fixed bug #38191.
  Ensured that delete_elements() in JOIN::cleanup would be called only once.
This commit is contained in:
Igor Babaev 2008-07-26 13:44:07 -07:00
commit b6e3a9e28c
3 changed files with 29 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
mysql-test/r/subselect.result
View file

@ -4396,4 +4396,15 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (<cache>(1) = <ref_null_helper>(1))))
DROP TABLE t1;
CREATE TABLE t1(pk int PRIMARY KEY, a int, INDEX idx(a));
INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20);
CREATE TABLE t2(pk int PRIMARY KEY, a int, b int, INDEX idxa(a));
INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100);
SELECT * FROM t1
WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);
pk a
1 10
3 30
2 20
DROP TABLE t1,t2;
End of 5.0 tests.