Answers for "(1451, 'cannot delete or update a parent row: a foreign key constraint fails (`fingerprintdb`.`user_log`, constraint `user_log_user_79b3d903_fk_users_userid` foreign key (`user`) references `users` (`userid`))')"

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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

Posted by: Guest on March-21-2021

ERROR 1451: 1451: Cannot delete or update a parent row: a foreign key constraint fails

SET FOREIGN_KEY_CHECKS=0; -- to disable them
SET FOREIGN_KEY_CHECKS=1; -- to re-enable them

Posted by: Guest on September-20-2021

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