MySQL触发器 trigger之after与before区分

标签：mysql   trigger   触发器   after   before   

#创建触发器test4
CREATE TRIGGER test4
AFTER
INSERT
ON `ord`
FOR EACH ROW
BEGIN
UPDATE goods SET num= num - new.much WHERE goods_id = new.gid;
END$$

#创建触发器test5
CREATE TRIGGER test5
BEFORE
INSERT
ON `ord`
FOR EACH ROW
BEGIN
  IF new.much >26 THEN
     SET new.much = 26;
  END IF;
UPDATE goods SET num= num - new.much WHERE goods_id = new.gid;
END$$

MySQL触发器 trigger之after与before区分

标签：mysql   trigger   触发器   after   before   

原文地址：http://blog.csdn.net/guugle2010/article/details/40396189