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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
#
# test of ISNULL()
#
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (id int auto_increment primary key not null, mydate date not null);
insert into t1 values (0,"2002-05-01"),(0,"2002-05-01"),(0,"2002-05-01");
flush tables;
select * from t1 where isnull(to_days(mydate));
drop table t1;
# End of 4.1 tests
--echo #
--echo # Bug#53933 crash when using uncacheable subquery in the having clause of outer query
--echo #
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES (0),(0);
SELECT ISNULL((SELECT GET_LOCK('Bug#53933', 0) FROM t1 GROUP BY f1)) AS f2
FROM t1 GROUP BY f1 HAVING f2 = f2;
SELECT RELEASE_LOCK('Bug#53933');
DROP TABLE t1;
--echo End of 5.0 tests
#
# Bug #41371 Select returns 1 row with condition "col is not null and col is null"
#
CREATE TABLE t1 (id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY(id));
INSERT INTO t1( id ) VALUES ( NULL );
SELECT t1.id FROM t1 WHERE (id is not null and id is null );
DROP TABLE t1;
# End of 5.1 tests
--echo #
--echo # Bug#29027883 INCORRECT RESULT OF LEFT JOIN
--echo #
# test the special, documented behaviour of "not-nullable-DATE-column
# IS NULL"
CREATE TABLE t1 (
pk int NOT NULL,
col_int_key INT NOT NULL,
col_date_key date NOT NULL,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key),
KEY col_date_key (col_date_key)
) ENGINE=MyISAM;
INSERT IGNORE INTO t1 VALUES (14,4,'0000-00-00'), (15,2,'2003-01-13'),
(16,5,'2006-07-07'), (17,3,'0000-00-00');
CREATE TABLE t2 (
pk INT NOT NULL,
PRIMARY KEY (pk)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1), (2), (3);
CREATE TABLE t3(pk INT NOT NULL);
INSERT INTO t3 VALUES(3),(3);
select * from t3 left join
(t2 outr2 join t2 outr join t1)
on (outr.pk = t3.pk) and (t1.col_int_key = t3.pk) and isnull(t1.col_date_key)
and (outr2.pk <> t3.pk) ;
select * from t3 join
(t2 outr2 join t2 outr join t1)
on (outr.pk = t3.pk) and (t1.col_int_key = t3.pk) and isnull(t1.col_date_key)
and (outr2.pk <> t3.pk) ;
delete from t3;
INSERT INTO t3 VALUES(3);
# Special behaviour is:
# enabled in WHERE
let $query=
select * from t3, t1 where t1.col_date_key is null;
eval EXPLAIN $query;
--sorted_result
eval $query;
# disabled in [LEFT] JOIN ON
let $query=
select * from t3 join t1 on t1.col_date_key is null;
eval EXPLAIN $query;
--sorted_result
eval $query;
let $query=
select * from t3 left join t1 on t1.col_date_key is null;
eval EXPLAIN $query;
--sorted_result
eval $query;
# Combine both:
let $query=
select * from t3 left join t1 on t1.col_date_key is null
where t1.col_date_key is null;
eval EXPLAIN $query;
--sorted_result
eval $query;
# disabled in IS NOT NULL
let $query=
select * from t3, t1 where t1.col_date_key is not null;
eval EXPLAIN $query;
--sorted_result
eval $query;
# disabled in NOT (IS NULL)
let $query=
select * from t3, t1 where not (t1.col_date_key is null);
eval EXPLAIN $query;
--sorted_result
eval $query;
# enabled in (IS NULL) IS TRUE
let $query=
select * from t3, t1 where (t1.col_date_key is null) is true;
eval EXPLAIN $query;
--sorted_result
eval $query;
DROP TABLE t1,t2,t3;
--echo #
--echo # Bug #32171239: HYPERGRAPH: ASSERTION `!(USED_TABS & (~READ_TABLES & ~FILTER_FOR_TABLE))' FAILED.
--echo #
# The XOR is to make sure the IS NULL condition is not optimized away straight
# away, but instead gets to the point where we want to estimate its selectivity.
CREATE TABLE t1 (a INTEGER NOT NULL);
SELECT 1 FROM t1 WHERE (a IS NULL) XOR (RAND() > 2.0);
DROP TABLE t1;
--echo #
--echo # Bug#32231698: SETUP_FIELDS: ASSERTION `!THD->IS_ERROR()' FAILED
--echo #
--error ER_WRONG_ARGUMENTS
DO AVG((SELECT POINT(@x, POINT(115, 219)) IS NULL));
--error ER_WRONG_ARGUMENTS
DO AVG((SELECT POINT(@x, POINT(115, 219)) IS NULL)) OVER ();
--echo #
--echo # Bug#34808199: Assertion `!OrderItemsReferenceUnavailableTables(path, tables)' failed.
--echo #
CREATE TABLE t(x INT NOT NULL);
INSERT INTO t VALUES (0), (1);
SELECT t1.x IS NULL = t2.x AS col FROM t AS t1, t AS t2 ORDER BY col;
DROP TABLE t;
|
