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;