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#
# 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);
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;
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
Error 1005 Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint
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`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
show warnings;
Level Code Message
Error 1005 Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
Warning 1215 Cannot add foreign key constraint
drop table t2;
drop table t1;
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