事务的添加,修改,删除
INSERT:
表1 (ID, NAME ) 表2 (ID, NAME ) 当用户插入表1数据后,表2也被插入相同的数据 CREATE TRIGGER TRI1 ON 表1 FOR INSERT AS BEGIN INSERT INTO 表2 SELECT * FROM INSERTED END GO |
DELETE:
表1 (ID, NAME ) 表2 (ID,AGE,GENDER) 当用户删除表1某条ID的数据后,表2相应ID的数据也被删除 CREATE TRIGGER TRI2 ON 表1 FOR DELETE AS BEGIN DECLARE @id INT SELECT @id FROM DELETED DELETE 表2 WHERE ID = @id END GO |
UPDATE:
表1 (ID,
NAME
)
表2 (ID,
NAME
)
当用户更改表1
NAME
列数据后,表2相应ID的数据也同时更新
CREATE
TRIGGER
TRI3
ON
表1
FOR
UPDATE
AS
IF
UPDATE
(
NAME
)
BEGIN
UPDATE
表2
SET
A.
NAME
= B.
NAME
FROM
表2 A, INSERTED B
WHERE
A.ID = B.ID
END
GO