DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`expedition_beforeUpdate`
	BEFORE UPDATE ON `expedition`
	FOR EACH ROW
BEGIN
	SET NEW.editorFk = account.myUser_getId();

	IF NEW.counter <> OLD.counter THEN
		IF (SELECT COUNT(*) FROM expedition e 
				INNER JOIN ticket t1 ON e.ticketFk = t1.id
				INNER JOIN ticket t2 ON t2.addressFk = t1.addressFk AND DATE(t2.shipped) = DATE(t1.shipped) 
			WHERE t1.id = NEW.ticketFk AND counter = NEW.counter) > 0 THEN
			SET NEW.id = NULL;
		END IF;
	END IF;
END$$
DELIMITER ;