USE fetchmetrics; DROP TRIGGER IF EXISTS fetchmetrics.before_insert_DOG_Dog_Change_Set; DELIMITER // CREATE TRIGGER fetchmetrics.before_insert_DOG_Dog_Change_Set BEFORE INSERT ON fetchmetrics.DOG_Dog_Change_Set FOR EACH ROW BEGIN IF NEW.updated_last_on <=> NULL THEN SET NEW.updated_last_on = NOW(); END IF; END // DELIMITER ;