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--source include/have_innodb.inc
--echo #
--echo # Bug #19027905 ASSERT RET.SECOND DICT_CREATE_FOREIGN_CONSTRAINTS_LOW
--echo # DICT_CREATE_FOREIGN_CONSTR
--echo #
create table t1 (f1 int primary key) engine=InnoDB;
--error ER_CANT_CREATE_TABLE
create table t2 (f1 int primary key,
constraint c1 foreign key (f1) references t1(f1),
constraint c1 foreign key (f1) references t1(f1)) engine=InnoDB;
create table t2 (f1 int primary key,
constraint c1 foreign key (f1) references t1(f1)) engine=innodb;
--replace_regex /#sql-[0-9a-f_]*/#sql-temporary/
--error ER_CANT_CREATE_TABLE
alter table t2 add constraint c1 foreign key (f1) references t1(f1);
set foreign_key_checks = 0;
--error ER_DUP_CONSTRAINT_NAME
alter table t2 add constraint c1 foreign key (f1) references t1(f1);
drop table t2, t1;
--echo #
--echo # Bug #20031243 CREATE TABLE FAILS TO CHECK IF FOREIGN KEY COLUMN
--echo # NULL/NOT NULL MISMATCH
--echo #
set foreign_key_checks = 1;
show variables like 'foreign_key_checks';
CREATE TABLE t1
(a INT NOT NULL,
b INT NOT NULL,
INDEX idx(a)) ENGINE=InnoDB;
CREATE TABLE t2
(a INT KEY,
b INT,
INDEX ind(b),
FOREIGN KEY (b) REFERENCES t1(a) ON DELETE CASCADE ON UPDATE CASCADE)
ENGINE=InnoDB;
show create table t1;
show create table t2;
INSERT INTO t1 VALUES (1, 80);
INSERT INTO t1 VALUES (2, 81);
INSERT INTO t1 VALUES (3, 82);
INSERT INTO t1 VALUES (4, 83);
INSERT INTO t1 VALUES (5, 84);
INSERT INTO t2 VALUES (51, 1);
INSERT INTO t2 VALUES (52, 2);
INSERT INTO t2 VALUES (53, 3);
INSERT INTO t2 VALUES (54, 4);
INSERT INTO t2 VALUES (55, 5);
SELECT a, b FROM t1 ORDER BY a;
SELECT a, b FROM t2 ORDER BY a;
--error ER_NO_REFERENCED_ROW_2
INSERT INTO t2 VALUES (56, 6);
ALTER TABLE t1 CHANGE a id INT;
SELECT id, b FROM t1 ORDER BY id;
SELECT a, b FROM t2 ORDER BY a;
--echo # Operations on child table
--error ER_NO_REFERENCED_ROW_2
INSERT INTO t2 VALUES (56, 6);
--error ER_NO_REFERENCED_ROW_2
UPDATE t2 SET b = 99 WHERE a = 51;
DELETE FROM t2 WHERE a = 53;
SELECT id, b FROM t1 ORDER BY id;
SELECT a, b FROM t2 ORDER BY a;
--echo # Operations on parent table
DELETE FROM t1 WHERE id = 1;
UPDATE t1 SET id = 50 WHERE id = 5;
SELECT id, b FROM t1 ORDER BY id;
SELECT a, b FROM t2 ORDER BY a;
DROP TABLE t2, t1;
--echo #
--echo # bug#25126722 FOREIGN KEY CONSTRAINT NAME IS NULL AFTER RESTART
--echo # base bug#24818604 [GR]
--echo #
CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (c1 INT PRIMARY KEY, FOREIGN KEY (c1) REFERENCES t1(c1))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
--source include/restart_mysqld.inc
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
SELECT * FROM t1;
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
DROP TABLE t2;
DROP TABLE t1;
#
# MDEV-12669 Circular foreign keys cause a loop and OOM upon LOCK TABLE
#
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;
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