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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
#
# Bug #18806829 OPENING INNODB TABLES WITH MANY FOREIGN KEY
# REFERENCES IS SLOW/CRASHES SEMAPHORE
#
create table t1 (f1 int primary key) engine=innodb;
insert into t1 values (5);
insert into t1 values (2882);
insert into t1 values (10);
# restart
update t1 set f1 = 28 where f1 = 2882;
select * from fk_120;
f1
5
10
28
select * from fk_1;
f1
5
10
28
select * from fk_50;
f1
5
10
28
drop table t1;
#
# Check if restrict is working fine.
#
create table t1 (f1 int primary key) engine=innodb;
# restart
delete from t1 where f1 = 29;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`fk_29`, CONSTRAINT `pc29` FOREIGN KEY (`f1`) REFERENCES `t1` (`f1`))
select * from fk_29;
f1
29
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL AUTO_INCREMENT,
f1 int(11) DEFAULT NULL,
PRIMARY KEY (id),
CONSTRAINT fk1 FOREIGN KEY (f1) REFERENCES t1 (id) ON DELETE CASCADE
) ENGINE=InnoDB;
CREATE TABLE t2 (
id int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 int(11) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT fk2 FOREIGN KEY (f2) REFERENCES t1 (`id`) ON DELETE CASCADE,
CONSTRAINT fk3 FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE
) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Warning 150 Create table `test`.`t2` with foreign key `fk3` constraint failed. Referenced table `test`.`t3` not found in the data dictionary.
Error 1005 Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint for `t2`
CREATE TABLE t2 (
id int(11) NOT NULL AUTO_INCREMENT,
f2 int(11) NOT NULL,
f3 int(11) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT fk2 FOREIGN KEY (f2) REFERENCES t1 (`id`) ON DELETE CASCADE
) ENGINE=InnoDB;
ALTER TABLE t2 ADD CONSTRAINT fk3 FOREIGN KEY (f3) REFERENCES t3 (id) ON DELETE CASCADE;
ERROR HY000: Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Warning 150 Alter table `test`.`t2` with foreign key `fk3` constraint failed. Referenced table `test`.`t3` not found in the data dictionary.
Error 1005 Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint for `t2`
drop table t2;
drop table t1;
CREATE DATABASE kg_test1;
CREATE DATABASE kg_test2;
CREATE TABLE `kg_test1`.`group` (
Id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `kg_test1`.`person` (
`Id` INT(11) NOT NULL AUTO_INCREMENT,
`Name` VARCHAR(50) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `fk_person_group` FOREIGN KEY (`Id`) REFERENCES `group` (`Id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
show create table `kg_test1`.`person`;
Table Create Table
person CREATE TABLE `person` (
`Id` int(11) NOT NULL AUTO_INCREMENT,
`Name` varchar(50) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `fk_person_group` FOREIGN KEY (`Id`) REFERENCES `group` (`Id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
CREATE TABLE `kg_test2`.`person2` (
`Id` INT(11) NOT NULL AUTO_INCREMENT,
`Name` VARCHAR(50) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `fk_person_group` FOREIGN KEY (`Id`) REFERENCES `group` (`Id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
ERROR HY000: Can't create table `kg_test2`.`person2` (errno: 150 "Foreign key constraint is incorrectly formed")
CREATE TABLE `kg_test2`.`person2` (
`Id` INT(11) NOT NULL AUTO_INCREMENT,
`Name` VARCHAR(50) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `fk_person_group` FOREIGN KEY (`Id`) REFERENCES `kg_test1`.`group` (`Id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
show create table `kg_test2`.`person2`;
Table Create Table
person2 CREATE TABLE `person2` (
`Id` int(11) NOT NULL AUTO_INCREMENT,
`Name` varchar(50) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `fk_person_group` FOREIGN KEY (`Id`) REFERENCES `kg_test1`.`group` (`Id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
SHOW WARNINGS;
Level Code Message
DROP DATABASE kg_test2;
DROP DATABASE kg_test1;
CREATE TABLE `#departaments` (
`id_depart` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id_depart`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
CREATE TABLE `#departaments_tree` (
`id_depart` INT(10) UNSIGNED NOT NULL,
`id_depart_in` INT(10) UNSIGNED NOT NULL,
PRIMARY KEY (`id_depart`,`id_depart_in`),
CONSTRAINT `#departaments_tree_ibfk_1` FOREIGN KEY (`id_depart`) REFERENCES `#departaments` (`id_depart`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
ALTER TABLE `#departaments_tree`
ADD FOREIGN KEY (`id_depart_in`) REFERENCES `#departaments`(`id_depart`);
SHOW CREATE TABLE `#departaments_tree`;
Table Create Table
#departaments_tree CREATE TABLE `#departaments_tree` (
`id_depart` int(10) unsigned NOT NULL,
`id_depart_in` int(10) unsigned NOT NULL,
PRIMARY KEY (`id_depart`,`id_depart_in`),
KEY `id_depart_in` (`id_depart_in`),
CONSTRAINT `#departaments_tree_ibfk_1` FOREIGN KEY (`id_depart`) REFERENCES `#departaments` (`id_depart`),
CONSTRAINT `#departaments_tree_ibfk_2` FOREIGN KEY (`id_depart_in`) REFERENCES `#departaments` (`id_depart`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
DROP TABLE `#departaments_tree`;
DROP TABLE `#departaments`;
CREATE TABLE `boroda` (
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`a` INT(11) UNSIGNED DEFAULT NULL,
`b` INT(11) UNSIGNED DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
CONSTRAINT `boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `boroda` (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
ALTER TABLE `boroda`
ADD FOREIGN KEY (`b`) REFERENCES `boroda`(`id`);
ALTER TABLE `boroda` DROP FOREIGN KEY `boroda_ibfk_2`;
RENAME TABLE `boroda` TO `#boroda`;
ALTER TABLE `#boroda`
ADD FOREIGN KEY (`b`) REFERENCES `#boroda`(`id`);
SHOW CREATE TABLE `#boroda`;
Table Create Table
#boroda CREATE TABLE `#boroda` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`a` int(11) unsigned DEFAULT NULL,
`b` int(11) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
KEY `b` (`b`),
CONSTRAINT `#boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `#boroda` (`id`),
CONSTRAINT `#boroda_ibfk_2` FOREIGN KEY (`b`) REFERENCES `#boroda` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
DROP TABLE `#boroda`;
CREATE TABLE `boroda` (
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`a` INT(11) UNSIGNED DEFAULT NULL,
`b` INT(11) UNSIGNED DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
CONSTRAINT `boroda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `boroda` (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
RENAME TABLE `boroda` TO `bor#oda`;
ALTER TABLE `bor#oda`
ADD FOREIGN KEY (`b`) REFERENCES `bor#oda`(`id`);
SHOW CREATE TABLE `bor#oda`;
Table Create Table
bor#oda CREATE TABLE `bor#oda` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`a` int(11) unsigned DEFAULT NULL,
`b` int(11) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `a` (`a`),
KEY `b` (`b`),
CONSTRAINT `bor#oda_ibfk_1` FOREIGN KEY (`a`) REFERENCES `bor#oda` (`id`),
CONSTRAINT `bor#oda_ibfk_2` FOREIGN KEY (`b`) REFERENCES `bor#oda` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
DROP TABLE `bor#oda`;
#
# MDEV-21127 Assertion `(size_t)(ptr - buf) < MAX_TEXT - 4' failed in key_text::key_text
#
CREATE TABLE t1 (
a012345678901234567890123456789012345678901 char(255),
b char(255),
FOREIGN KEY ( a012345678901234567890123456789012345678901, b ) REFERENCES tx (ax, bx)
) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
CREATE TABLE t1 (
a012345678901234567 int,
b int,
c0123456789012345678 int,
FOREIGN KEY (a012345678901234567,c0123456789012345678,b) REFERENCES tx (x1,x2,x3)
) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
#
# MDEV-25642 InnoDB rename table copy DDL fails
# while dropping the table
#
call mtr.add_suppression("InnoDB: In ALTER TABLE `test`.`t1` has or is referenced in foreign key constraints which are not compatible with the new table definition.");
CREATE TABLE t1 (a VARCHAR(10) NOT NULL PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t1_fk (a VARCHAR(40), KEY a (a), FULLTEXT KEY(a), CONSTRAINT fk FOREIGN KEY(a) REFERENCES t1 (a) ON UPDATE CASCADE) ENGINE=InnoDB;
ALTER TABLE t1 RENAME TO tm1, ALGORITHM=COPY;
SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
ID FOR_NAME REF_NAME N_COLS TYPE
test/fk test/t1_fk test/t1 1 4
SET FOREIGN_KEY_CHECKS=0;
CREATE TABLE t1 (c1 BIGINT NOT NULL, c2 BIGINT NOT NULL, PRIMARY KEY(c1), UNIQUE KEY(c2)) ENGINE=MEMORY;
ALTER TABLE t1 ENGINE=InnoDB, ALGORITHM=COPY;
DROP TABLE t1, tm1, t1_fk;
|
