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#
# Bug #19471516 SERVER CRASHES WHEN EXECUTING ALTER TABLE
# ADD FOREIGN KEY
#
CREATE TABLE `department` (`department_id` INT, `department_people_fk` INT,
PRIMARY KEY (`department_id`)) engine=innodb;
CREATE TABLE `title` (`title_id` INT, `title_manager_fk` INT,
`title_reporter_fk` INT, PRIMARY KEY (`title_id`)) engine=innodb;
CREATE TABLE `people` (`people_id` INT, PRIMARY KEY (`people_id`)) engine=innodb;
ALTER TABLE `department` ADD FOREIGN KEY (`department_people_fk`) REFERENCES
`people` (`people_id`);
ALTER TABLE `title` ADD FOREIGN KEY (`title_manager_fk`) REFERENCES `people`
(`people_id`);
ALTER TABLE `title` ADD FOREIGN KEY (`title_reporter_fk`) REFERENCES `people`
(`people_id`);
drop table title, department, people;
create table t1 (a int primary key, b int) engine=innodb;
create table t2 (c int primary key, d int,
foreign key (d) references t1 (a) on update cascade) engine=innodb;
insert t1 values (1,1),(2,2),(3,3);
insert t2 values (4,1),(5,2),(6,3);
flush table t2 with read lock;
connect con1,localhost,root;
delete from t1 where a=2;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`d`) REFERENCES `t1` (`a`) ON UPDATE CASCADE)
update t1 set a=10 where a=1;
connection default;
unlock tables;
connection con1;
connection default;
lock table t2 write;
connection con1;
delete from t1 where a=2;
connection default;
unlock tables;
connection con1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`d`) REFERENCES `t1` (`a`) ON UPDATE CASCADE)
connection default;
unlock tables;
disconnect con1;
create user foo;
grant select,update on test.t1 to foo;
connect foo,localhost,foo;
update t1 set a=30 where a=3;
disconnect foo;
connection default;
select * from t2;
c d
5 2
4 10
6 30
drop table t2, t1;
drop user foo;
create table t1 (f1 int primary key) engine=innodb;
create table t2 (f2 int primary key) engine=innodb;
create table t3 (f3 int primary key, foreign key (f3) references t2(f2)) engine=innodb;
insert into t1 values (1),(2),(3),(4),(5);
insert into t2 values (1),(2),(3),(4),(5);
insert into t3 values (1),(2),(3),(4),(5);
connect con1,localhost,root;
set debug_sync='alter_table_before_rename_result_table signal g1 wait_for g2';
alter table t2 add constraint foreign key (f2) references t1(f1) on delete cascade on update cascade;
connection default;
set debug_sync='before_execute_sql_command wait_for g1';
update t1 set f1 = f1 + 100000 limit 2;
connect con2,localhost,root;
kill query UPDATE;
disconnect con2;
connection default;
ERROR 70100: Query execution was interrupted
set debug_sync='now signal g2';
connection con1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`f2` int(11) NOT NULL,
PRIMARY KEY (`f2`),
CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`f2`) REFERENCES `t1` (`f1`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1
disconnect con1;
connection default;
select * from t2 where f2 not in (select f1 from t1);
f2
select * from t3 where f3 not in (select f2 from t2);
f3
drop table t3;
drop table t2;
drop table t1;
set debug_sync='reset';
#
# MDEV-17595 - Server crashes in copy_data_between_tables or
# Assertion `thd->transaction.stmt.is_empty() ||
# (thd->state_flags & Open_tables_state::BACKUPS_AVAIL)'
# fails in close_tables_for_reopen upon concurrent
# ALTER TABLE and FLUSH
#
CREATE TABLE t1 (a INT, KEY(a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES(1),(2);
CREATE TABLE t2 (b INT, KEY(b)) ENGINE=InnoDB;
INSERT INTO t2 VALUES(2);
ALTER TABLE t2 ADD FOREIGN KEY(b) REFERENCES t1(a), LOCK=EXCLUSIVE;
DROP TABLE t2, t1;
#
# MDEV-16060 - InnoDB: Failing assertion: ut_strcmp(index->name, key->name)
#
CREATE TABLE t1 (`pk` INT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 LIKE t1;
FLUSH TABLES;
SET debug_sync='alter_table_intermediate_table_created SIGNAL ready WAIT_FOR go';
ALTER TABLE t1 ADD FOREIGN KEY(pk) REFERENCES t2(pk) ON UPDATE CASCADE;
connect con1, localhost, root;
SET debug_sync='now WAIT_FOR ready';
SET lock_wait_timeout=0;
UPDATE t2 SET pk=10 WHERE pk=1;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
PREPARE stmt FROM 'UPDATE t2 SET pk=10 WHERE pk=1';
DEALLOCATE PREPARE stmt;
SET debug_sync='now SIGNAL go';
connection default;
disconnect con1;
connection default;
SET debug_sync='reset';
SHOW OPEN TABLES FROM test;
Database Table In_use Name_locked
test t2 0 0
DROP TABLE t1, t2;
create table t1 (a int primary key, b int) engine=innodb;
create table t2 (c int primary key, d int,
foreign key (d) references t1 (a) on update cascade) engine=innodb;
insert t1 values (1,1),(2,2),(3,3);
insert t2 values (4,1),(5,2),(6,3);
flush table t2 with read lock;
connect con1,localhost,root;
delete from t1 where a=2;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`d`) REFERENCES `t1` (`a`) ON UPDATE CASCADE)
update t1 set a=10 where a=1;
connection default;
unlock tables;
connection con1;
connection default;
lock table t2 write;
connection con1;
delete from t1 where a=2;
connection default;
unlock tables;
connection con1;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`d`) REFERENCES `t1` (`a`) ON UPDATE CASCADE)
connection default;
unlock tables;
disconnect con1;
create user foo;
grant select,update on test.t1 to foo;
connect foo,localhost,foo;
update t1 set a=30 where a=3;
disconnect foo;
connection default;
select * from t2;
c d
5 2
4 10
6 30
drop table t2, t1;
drop user foo;
#
# MDEV-17187 table doesn't exist in engine after ALTER other tables
# with CONSTRAINTs
#
set foreign_key_checks=on;
create table t1 (id int not null primary key) engine=innodb;
create table t2 (id int not null primary key, fid int not null,
CONSTRAINT fk_fid FOREIGN KEY (fid) REFERENCES t1 (id))engine=innodb;
insert into t1 values (1), (2), (3);
insert into t2 values (1, 1), (2, 1), (3, 2);
set foreign_key_checks=off;
alter table t2 drop index fk_fid;
set foreign_key_checks=on;
delete from t1 where id=2;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_fid` FOREIGN KEY (`fid`) REFERENCES `t1` (`id`))
insert into t2 values(4, 99);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_fid` FOREIGN KEY (`fid`) REFERENCES `t1` (`id`))
select * from t1;
id
1
2
3
select * from t2;
id fid
1 1
2 1
3 2
set foreign_key_checks=off;
delete from t1 where id=2;
insert into t2 values(4, 99);
set foreign_key_checks=on;
select * from t1;
id
1
3
select * from t2;
id fid
1 1
2 1
3 2
4 99
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`id` int(11) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`id` int(11) NOT NULL,
`fid` int(11) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT `fk_fid` FOREIGN KEY (`fid`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1,t2;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails
drop table t1,t2;
ERROR 42S02: Unknown table 'test.t2'
#
# MDEV-23470 InnoDB: Failing assertion: cmp < 0 in
# row_ins_check_foreign_constraint
#
CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY, f2 INT NOT NULL)ENGINE=InnoDB;
CREATE TABLE t2(f1 VARCHAR(100), f2 INT NOT NULL,
INDEX(f2))ENGINE=InnoDB;
INSERT INTO t1 VALUES(99, 2);
ALTER TABLE t2 ADD FOREIGN KEY(f2) REFERENCES t1(f1);
SET FOREIGN_KEY_CHECKS=0;
DROP INDEX f2 ON t2;
SET FOREIGN_KEY_CHECKS=1;
INSERT INTO t2 VALUES('G', 3);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`f2`) REFERENCES `t1` (`f1`))
DROP TABLE t2, t1;
SET FOREIGN_KEY_CHECKS=DEFAULT;
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