SET FOREIGN_KEY_CHECKS=0;
CREATE TABLE staff (
staff_id TINYINT UNSIGNED NOT NULL AUTO_INCREMENT,
store_id TINYINT UNSIGNED NOT NULL,
PRIMARY KEY  (staff_id),
KEY idx_fk_store_id (store_id),
CONSTRAINT fk_staff_store FOREIGN KEY (store_id) REFERENCES store (store_id) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE=InnoDB;
CREATE TABLE store (
store_id TINYINT UNSIGNED NOT NULL AUTO_INCREMENT,
manager_staff_id TINYINT UNSIGNED NOT NULL,
PRIMARY KEY  (store_id),
UNIQUE KEY idx_unique_manager (manager_staff_id),
CONSTRAINT fk_store_staff FOREIGN KEY (manager_staff_id) REFERENCES staff (staff_id) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE=InnoDB;
SET FOREIGN_KEY_CHECKS=DEFAULT;
LOCK TABLE staff WRITE;
UNLOCK TABLES;
DROP TABLES staff, store;
SET FOREIGN_KEY_CHECKS=1;
#
# MDEV-17531 Crash in RENAME TABLE with FOREIGN KEY and FULLTEXT INDEX
#
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
CREATE DATABASE best;
CREATE TABLE t3 (a INT PRIMARY KEY,
CONSTRAINT t2_ibfk_1 FOREIGN KEY (a) REFERENCES t1(a)) ENGINE=InnoDB;
CREATE TABLE best.t2 (a INT PRIMARY KEY, b TEXT, FULLTEXT INDEX(b),
FOREIGN KEY (a) REFERENCES test.t1(a)) ENGINE=InnoDB;
RENAME TABLE best.t2 TO test.t2;
ERROR 42S01: Table 't2' already exists
SHOW CREATE TABLE best.t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) NOT NULL,
  `b` text,
  PRIMARY KEY (`a`),
  FULLTEXT KEY `b` (`b`),
  CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `test`.`t1` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP DATABASE best;
#
# MDEV-17541 KILL QUERY during lock wait in FOREIGN KEY check hangs
#
INSERT INTO t1 SET a=1;
BEGIN;
DELETE FROM t1;
INSERT INTO t3 SET a=1;
kill query @id;
ERROR 70100: Query execution was interrupted
DROP TABLE t3,t1;
#
# MDEV-18222 InnoDB: Failing assertion: heap->magic_n == MEM_BLOCK_MAGIC_N
# or ASAN heap-use-after-free in dict_foreign_remove_from_cache upon CHANGE COLUMN
#
CREATE TABLE t1 (a INT, UNIQUE(a), KEY(a)) ENGINE=InnoDB;
ALTER TABLE t1 ADD FOREIGN KEY (a) REFERENCES t1 (a);
SET SESSION FOREIGN_KEY_CHECKS = OFF;
ALTER TABLE t1 CHANGE COLUMN a a TIME NOT NULL;
ALTER TABLE t1 ADD pk INT NOT NULL AUTO_INCREMENT PRIMARY KEY;
ALTER TABLE t1 CHANGE COLUMN a b TIME;
SET SESSION FOREIGN_KEY_CHECKS = ON;
DROP TABLE t1;
#
# MDEV-18256 InnoDB: Failing assertion: heap->magic_n == MEM_BLOCK_MAGIC_N
# upon DROP FOREIGN KEY
#
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (b INT PRIMARY KEY, FOREIGN KEY fk1 (b) REFERENCES t1 (a))
ENGINE=InnoDB;
ALTER TABLE t2 DROP FOREIGN KEY fk1, DROP FOREIGN KEY fk1;
DROP TABLE t2, t1;
CREATE TABLE t1 (f VARCHAR(256)) ENGINE=InnoDB;
SET SESSION FOREIGN_KEY_CHECKS = OFF;
ALTER TABLE t1 ADD FOREIGN KEY (f) REFERENCES non_existing_table (x);
SET SESSION FOREIGN_KEY_CHECKS = ON;
ALTER TABLE t1 ADD FULLTEXT INDEX ft1 (f);
Warnings:
Warning	124	InnoDB rebuilding table to add column FTS_DOC_ID
Warning	1088	failed to load FOREIGN KEY constraints
ALTER TABLE t1 ADD FULLTEXT INDEX ft2 (f);
Warnings:
Warning	1088	failed to load FOREIGN KEY constraints
DROP TABLE t1;
CREATE TABLE t1 (f VARCHAR(256), FTS_DOC_ID BIGINT UNSIGNED PRIMARY KEY)
ENGINE=InnoDB;
SET SESSION FOREIGN_KEY_CHECKS = OFF;
ALTER TABLE t1 ADD FOREIGN KEY (f) REFERENCES non_existing_table (x);
SET SESSION FOREIGN_KEY_CHECKS = ON;
ALTER TABLE t1 ADD FULLTEXT INDEX ft1 (f);
Warnings:
Warning	1088	failed to load FOREIGN KEY constraints
ALTER TABLE t1 ADD FULLTEXT INDEX ft2 (f);
DROP TABLE t1;
#
# MDEV-18630 Conditional jump or move depends on uninitialised value
# in ib_push_warning / dict_create_foreign_constraints_low
#
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
ALTER IGNORE TABLE t1 ADD FOREIGN KEY (a) REFERENCES t2 (b);
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
SHOW WARNINGS;
Level	Code	Message
Warning	150	Alter  table `test`.`t1` with foreign key constraint failed. Referenced table `test`.`t2` not found in the data dictionary near 'FOREIGN KEY (a) REFERENCES t2 (b)'.
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 t1;
#
# MDEV-18139 ALTER IGNORE ... ADD FOREIGN KEY causes bogus error
#
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT, KEY(f1)) ENGINE=InnoDB;
CREATE TABLE t2 (f INT, KEY(f)) ENGINE=InnoDB;
ALTER TABLE t1 ADD FOREIGN KEY (f2) REFERENCES t2 (f);
ALTER IGNORE TABLE t1 ADD FOREIGN KEY (f3) REFERENCES t1 (f1);
DROP TABLE t1, t2;
CREATE TABLE t1 (a INT, b INT, KEY idx(a)) ENGINE=InnoDB;
SET FOREIGN_KEY_CHECKS= OFF;
ALTER TABLE t1 ADD FOREIGN KEY (a) REFERENCES tx(x);
ALTER TABLE t1 DROP KEY idx;
ALTER TABLE t1 CHANGE a c INT;
DROP TABLE t1;
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT, KEY idx(f1)) ENGINE=InnoDB;
ALTER TABLE t1 ADD FOREIGN KEY (f2) REFERENCES t1 (f1);
ALTER TABLE t1 ADD COLUMN f INT;
SET FOREIGN_KEY_CHECKS= OFF;
ALTER TABLE t1 DROP KEY idx;
ALTER TABLE t1 ADD KEY idx (f1);
SET FOREIGN_KEY_CHECKS= ON;
ALTER TABLE t1 DROP f3;
ALTER TABLE t1 CHANGE f f3 INT;
DROP TABLE t1;
SET FOREIGN_KEY_CHECKS=1;
#
# 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;
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;
unlock tables;
lock table t2 write;
delete from t1 where a=2;
unlock tables;
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)
unlock tables;
create user foo;
grant select,update on test.t1 to foo;
update t1 set a=30 where a=3;
select * from t2;
c	d
5	2
4	10
6	30
drop table t2, t1;
drop user foo;
#
# 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;
create table t1 (pk int primary key, data int) engine=innodb;
insert t1 values (1,1),(2,2),(3,3);
create table t2 (t1_pk int, foreign key (t1_pk) references t1 (pk)) engine=innodb;
insert t2 values (1),(2);
insert t2 values (10);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`t1_pk`) REFERENCES `t1` (`pk`))
flush tables;
flush status;
update t1 set data=10 where pk+1>10;
show status like '%opened_tab%';
Variable_name	Value
Opened_table_definitions	1
Opened_tables	1
flush tables;
flush status;
update t2 set t1_pk=11 where t1_pk+1>10;
show status like '%opened_tab%';
Variable_name	Value
Opened_table_definitions	1
Opened_tables	1
flush tables;
flush status;
lock tables t1 write;
show status like '%opened_tab%';
Variable_name	Value
Opened_table_definitions	2
Opened_tables	2
insert t1 values (4,4);
show status like '%opened_tab%';
Variable_name	Value
Opened_table_definitions	2
Opened_tables	2
unlock tables;
create function foo() returns int
begin
insert t1 values (5,5);
return 5;
end|
flush tables;
flush status;
select foo();
foo()
5
show status like '%opened_tab%';
Variable_name	Value
Opened_table_definitions	2
Opened_tables	2
drop function foo;
drop table t2, t1;