diff options
Diffstat (limited to 'mysql-test/r/subselect_no_scache.result')
| -rw-r--r-- | mysql-test/r/subselect_no_scache.result | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/mysql-test/r/subselect_no_scache.result b/mysql-test/r/subselect_no_scache.result index fdb3b129d46..26cea1f9f70 100644 --- a/mysql-test/r/subselect_no_scache.result +++ b/mysql-test/r/subselect_no_scache.result @@ -7059,6 +7059,34 @@ WHERE h.host in (SELECT host FROM mysql.user) ) AS sq FROM mysql.host h GROUP BY h.host; sq +# +# MDEV-7846:Server crashes in Item_subselect::fix +#_fields or fails with Thread stack overrun +# +CREATE TABLE t1 (column1 INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (3),(9); +CREATE TABLE t2 (column2 INT) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1),(4); +CREATE TABLE t3 (column3 INT) ENGINE=MyISAM; +INSERT INTO t3 VALUES (6),(8); +CREATE TABLE t4 (column4 INT) ENGINE=MyISAM; +INSERT INTO t4 VALUES (2),(5); +PREPARE stmt FROM " +SELECT ( + SELECT MAX( table1.column1 ) AS field1 + FROM t1 AS table1 + WHERE table3.column3 IN ( SELECT table2.column2 AS field2 FROM t2 AS table2 ) +) AS sq +FROM t3 AS table3, t4 AS table4 GROUP BY sq +"; +EXECUTE stmt; +sq +NULL +EXECUTE stmt; +sq +NULL +deallocate prepare stmt; +drop table t1,t2,t3,t4; set optimizer_switch=default; select @@optimizer_switch like '%subquery_cache=on%'; @@optimizer_switch like '%subquery_cache=on%' |