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#
# Bug #27453180 FOREIGN KEYS CONSTRAINTS IGNORED AFTER RENAME TABLE
#
SET FOREIGN_KEY_CHECKS=0;
CREATE TABLE child (fk INT, FOREIGN KEY (fk) REFERENCES parent(pk));
show create table child;
Table Create Table
child CREATE TABLE `child` (
`fk` int DEFAULT NULL,
KEY `fk` (`fk`),
CONSTRAINT `child_ibfk_1` FOREIGN KEY (`fk`) REFERENCES `parent` (`pk`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM INFORMATION_SCHEMA.INNODB_FOREIGN;
ID FOR_NAME REF_NAME N_COLS TYPE
test/child_ibfk_1 test/child test/parent 1 48
SELECT * FROM INFORMATION_SCHEMA.INNODB_FOREIGN_COLS;
ID FOR_COL_NAME REF_COL_NAME POS
test/child_ibfk_1 fk pk 1
INSERT INTO child VALUES (1);
CREATE TABLE parent0 (pk INT PRIMARY KEY);
INSERT INTO parent0 VALUES (1);
RENAME TABLE parent0 TO parent;
SET FOREIGN_KEY_CHECKS=1;
DELETE FROM parent;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY (`fk`) REFERENCES `parent` (`pk`))
DROP TABLE child;
DROP TABLE parent;
SET FOREIGN_KEY_CHECKS=0;
CREATE TABLE child (fk INT, FOREIGN KEY (fk) REFERENCES parent(pk));
show create table child;
Table Create Table
child CREATE TABLE `child` (
`fk` int DEFAULT NULL,
KEY `fk` (`fk`),
CONSTRAINT `child_ibfk_1` FOREIGN KEY (`fk`) REFERENCES `parent` (`pk`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM INFORMATION_SCHEMA.INNODB_FOREIGN;
ID FOR_NAME REF_NAME N_COLS TYPE
test/child_ibfk_1 test/child test/parent 1 48
SELECT * FROM INFORMATION_SCHEMA.INNODB_FOREIGN_COLS;
ID FOR_COL_NAME REF_COL_NAME POS
test/child_ibfk_1 fk pk 1
INSERT INTO child VALUES (1);
CREATE TABLE parent0 (pk INT PRIMARY KEY);
INSERT INTO parent0 VALUES (1);
ALTER TABLE parent0 RENAME parent;
SET FOREIGN_KEY_CHECKS=1;
DELETE FROM parent;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY (`fk`) REFERENCES `parent` (`pk`))
DROP TABLE child;
DROP TABLE parent;
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