#1451 - Cannot delete or update a parent row: a foreign key constraint fails (`test`.`orders`, CONSTRAINT `orders_ibfk_1` FOREIGN KEY (`userId`) REFERENCES `users` (`userId`)) code example

Example: error 1451 (23000): cannot delete or update a parent row: a foreign key constraint fails

SET FOREIGN_KEY_CHECKS = 0; -- to disable FK checks (ex: for delete purpose)
SET FOREIGN_KEY_CHECKS = 1; -- to re-enable FK checks