DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `bs`.`clientNewBorn_beforeUpdate`
	BEFORE UPDATE ON `clientNewBorn`
	FOR EACH ROW
BEGIN
	-- Si ha pasado un año o mas
	IF TIMESTAMPDIFF(YEAR,NEW.lastShipped, OLD.lastShipped) THEN
		SET NEW.firstShipped = NEW.lastShipped;
	END IF;
END$$
DELIMITER ;