diff options
Diffstat (limited to 'mysql-test/t/subselect.test')
| -rw-r--r-- | mysql-test/t/subselect.test | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index 155c95da254..ee524cda994 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -2988,6 +2988,100 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1; DROP TABLE t1,t2; # +# Bug31048: Many nested subqueries may cause server crash. +# +create table t1(a int,b int,key(a),key(b)); +insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5), + (6,7),(7,4),(5,3); +# test for the stack overflow bug +select sum(a),a from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 + )group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1) +group by a; +--replace_regex /overrun.*$/overrun detected/ +--error 1436 +select sum(a),a from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1) +group by a; +# test for the memory consumption & subquery slowness bug +explain select sum(a),a from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 + )group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1) +group by a; +--replace_regex /overrun.*$/overrun detected/ +--error 1436 +explain select sum(a),a from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 where a> ( select sum(a) from t1 where a> ( + select sum(a) from t1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1 + )group by b limit 1)group by b limit 1)group by b limit 1) +group by a; +drop table t1; + +# # Bug #31884: Assertion + crash in subquery in the SELECT clause. # |