DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`town_afterUpdate`
	AFTER UPDATE ON `town`
	FOR EACH ROW
BEGIN
	IF !(OLD.provinceFk <=> NEW.provinceFk) THEN
		CALL zoneGeo_setParent(NEW.geoFk,
			(SELECT geoFk FROM province WHERE id = NEW.provinceFk));
	END IF;

	IF !(OLD.`name` <=> NEW.`name`) THEN
		UPDATE zoneGeo SET `name` = NEW.`name`
			WHERE id = NEW.geoFk;
	END IF;
END$$
DELIMITER ;
