cannot delete or update a code example
Example: mysql cannot delete or update a parent row
# THIS SHOULD ONLY BE USED AS A LAST RESORT
SET FOREIGN_KEY_CHECKS=0; -- to disable them
SET FOREIGN_KEY_CHECKS=1; -- to re-enable them
# THIS SHOULD ONLY BE USED AS A LAST RESORT
SET FOREIGN_KEY_CHECKS=0; -- to disable them
SET FOREIGN_KEY_CHECKS=1; -- to re-enable them