表中某列被修改后触发器SQL例子

发表日期：2008-2-9

CREATE TABLE [TEST] (
[FID] [int] IDENTITY (1, 1) NOT NULL ,
[F1] [int] NULL ,
[F2] [int] NULL ,
[F3] [int] NULL ,
CONSTRAINT [PK_TEST] PRIMARY KEY CLUSTERED
(
  [FID]
) ON [PRIMARY]
) ON [PRIMARY]
GO
alter TRIGGER updatetest ON [dbo].[TEST]
FOR INSERT, UPDATE, DELETE
AS
begin
declare @F1 int,
  @FID int,
  @OldF1 int
if update(F1)
begin
  select @OldF1=F1 from test where FID in (select FID from INSERTED)
  select @FID=FID,@F1=F1 from INSERTED
  PRINT 'fID = ' + convert(varchar(10),@FID)
  PRINT 'OldF1 = ' + convert(varchar(10),@OldF1)
  PRINT 'F1 = ' + convert(varchar(10),@F1)
end

end go insert test(f1,f2,f3) values(1,2,3)
go
select * from test
go
update test set f1=11 where fid=1
go
--问题：不能获得修改前的值？？？

上一篇：一个将数据分页的存储过程人气:1366
下一篇：日期时间转换为日期的SQL语句人气:1483

浏览全部Oracle教程的内容 Dreamweaver插件下载网页广告代码祝你圣诞节快乐 2009年新年快乐