1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
-- source include/not_embedded.inc
#
# BUG#10308: purge log with subselect
# Bug#28553: mysqld crash in "purge master log before(select time from information_schema)"
#
--error 1064
purge master logs before (select adddate(current_timestamp(), interval -4 day));
purge master logs before adddate(current_timestamp(), interval -4 day);
#
# 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;
|