我想每天晚上12点自动更新所有包含ifupdate字段的用户表

SQL code

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[My_AutoUpdateIfUpdate]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)drop procedure [dbo].[My_AutoUpdateIfUpdate]GOSET QUOTED_IDENTIFIER ON GOSET ANSI_NULLS ON GOCreate proc [dbo].[My_AutoUpdateIfUpdate] as   declare @Name varchar(25) BEGIN TRAN  declare ifupdate_cursor CURSOR FOR                    SELECT Name FROM SysObjects Where XType='U' ORDER BY Name                  open ifupdate_cursor                    fetch next from ifupdate_cursor INTO @NameWHILE @@FETCH_STATUS = 0                    BEGIN                    -----------------------------------------------------循环体-----------------------------------------------------                    IF Exists(SELECT Name FROM SysColumns WHERE id=Object_Id('@Name') and name = 'ifupdate')                    BEGIN     Update @Name set ifupdate='',updateman=''END                          fetch next from ifupdate_cursor INTO @Name                 -----------------------------------------------------循环体-----------------------------------------------------                    END               CLOSE ifupdate_cursor                    DEALLOCATE ifupdate_cursor                                       if   @@error <> 0   begin   rollback   tran   return   end commit tranGOSET QUOTED_IDENTIFIER OFF GOSET ANSI_NULLS ON GO          

Update @Name set ifupdate='',updateman=''出现错误：
消息 137，级别 15，状态 2，过程 My_AutoUpdateIfUpdate，第 17 行
必须声明变量 '@Name'。
update后不能接变量吗？
请问这个要怎么改？

[解决办法]
用动态语句.
exec (' Update '+ @Name + 'set ifupdate='',updateman=''' )
[解决办法]

SQL code

IF Exists(SELECT Name FROM SysColumns WHERE id=Object_Id(@Name) and name = 'ifupdate')      --#1.这里把''去掉           BEGIN     exec ('Update ' + @Name + ' set ifupdate='''', updateman=''''') --#2.这里需要用动态sqlEND                          fetch next from ifupdate_cursor INTO @Name