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
|
# Initialize tables for the test
--disable_warnings
drop table if exists x1;
drop table if exists x2;
--enable_warnings
set @tmp_subselect_nulls=@@optimizer_switch;
set optimizer_switch='semijoin=off';
create table x1(k int primary key, d1 int, d2 int);
create table x2(k int primary key, d1 int, d2 int);
insert into x1 values
(10, 10, 10),
(20, 20, 20),
(21, 20, null),
(30, null, 30),
(40, 40, 40);
insert into x2 values
(10, 10, 10),
(20, 20, 20),
(21, 20, null),
(30, null, 30);
# Test various IN and EXISTS queries with NULL values and UNKNOWN
# Q1 T=(10, 20) U=(21,30) F=(40)
select *
from x1
where (d1, d2) in (select d1, d2
from x2);
select *
from x1
where (d1, d2) in (select d1, d2
from x2) is true;
select *
from x1
where (d1, d2) in (select d1, d2
from x2) is false;
select *
from x1
where (d1, d2) in (select d1, d2
from x2) is unknown;
# Q2 T=(10, 20) U=(30) F=(21, 40)
select *
from x1
where d1 in (select d1
from x2
where x1.d2=x2.d2);
select *
from x1
where d1 in (select d1
from x2
where x1.d2=x2.d2) is true;
select *
from x1
where d1 in (select d1
from x2
where x1.d2=x2.d2) is false;
select *
from x1
where d1 in (select d1
from x2
where x1.d2=x2.d2) is unknown;
# Q3 T=(10, 20) U=() F=(21, 30, 40)
select *
from x1
where 1 in (select 1
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2);
select *
from x1
where 1 in (select 1
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2) is true;
select *
from x1
where 1 in (select 1
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2) is false;
select *
from x1
where 1 in (select 1
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2) is unknown;
# Q4 T=(10, 20) F=(21, 30, 40)
select *
from x1
where exists (select *
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2);
set optimizer_switch= @tmp_subselect_nulls;
drop table x1;
drop table x2;
#
# MDEV-7339 Server crashes in Item_func_trig_cond::val_int
#
select (select 1, 2) in (select 3, 4);
select (select NULL, NULL) in (select 3, 4);
|
