trigger before insert example
Example 1: trigger before insert
DELIMITER $$
CREATE TRIGGER before_workcenters_insert
BEFORE INSERT
ON WorkCenters FOR EACH ROW
BEGIN
DECLARE rowcount INT;
SELECT COUNT(*)
INTO rowcount
FROM WorkCenterStats;
IF rowcount > 0 THEN
UPDATE WorkCenterStats
SET totalCapacity = totalCapacity + new.capacity;
ELSE
INSERT INTO WorkCenterStats(totalCapacity)
VALUES(new.capacity);
END IF;
END $$
DELIMITER ;
Example 2: trigger before insert
CREATE TRIGGER trigger_name
BEFORE INSERT
ON table_name FOR EACH ROW
BEGIN
END;
Example 3: trigger before insert
INSERT INTO WorkCenters(name, capacity)
VALUES('Mold Machine',100);