salix/db/routines/vn/triggers/roadmap_beforeUpdate.sql

DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` TRIGGER `vn`.`roadmap_beforeUpdate`
	BEFORE UPDATE ON `roadmap`
	FOR EACH ROW
BEGIN
	IF NEW.driver1Fk IS NOT NULL THEN
		SET NEW.driverName = (SELECT firstName FROM worker WHERE id = NEW.driver1Fk);
	ELSE
		SET NEW.driverName = NULL;
	END IF;
END$$
DELIMITER ;