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 程式師世界 >> 數據庫知識 >> SqlServer數據庫 >> 關於SqlServer >> sql 觸發器使用例子

sql 觸發器使用例子

編輯:關於SqlServer
inserted,deleted是在觸發器中使用的兩個臨時表,當執行insert操作時,在inserted中存儲著當前插入的記錄,在執行delete操作時,在deleted中存儲著當前刪除的記錄,當執行update時,在inserted中存儲著修改後的記錄,在deleted中存儲著修改前的記錄。
代碼如下:

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER TRIGGER [dnt_user_add]
ON [dbo].[dnt_users]
AFTER INSERT
AS
BEGIN
SET NOCOUNT ON;
insert into [dnt_userfields](uid)
select uid from inserted

END


刪除:
代碼如下:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE TRIGGER [dnt_users_del]
ON [dnt_users]
AFTER DELETE
AS
BEGIN

SET NOCOUNT ON;
delete [dnt_userfields] from deleted where [dnt_userfields].uid=deleted.uid

END
GO

修改:
代碼如下:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER TRIGGER [dnt_users_up]
ON [dnt_users]
AFTER UPDATE
AS
BEGIN

SET NOCOUNT ON;
UPDATE [dnt_userfields] Set icq = inserted.uid from inserted where [dnt_userfields].uid = inserted.uid

END
GO
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