IF EXISTS (SELECT * FROM sysobjects WHERE object_id = OBJECT_ID(N'[dbo].[#tempTable]') AND type in (N'U'))
Begin
DROP TABLE [dbo].[tempTable]
End
--错误的临时表删除操作，因为临时表名已变 by yqxbc.com
if exists (select * from tempdb.dbo.sysobjects where id = object_id(N'[#temptable]'))
Begin
drop table #temptable
End

--正确的临时表删除操作
if object_id('tempdb#tempTable') is not null Begin
drop table #tempTable
End