--判斷數(shù)據(jù)庫是否存在 if exists(select * from master..sysdatabases where name=N’庫名’) print ’exists’ else print ’not exists’
--------------- -- 判斷要創(chuàng)建的表名是否存在 if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[表名]’) and OBJECTPROPERTY(id, N’IsUserTable’) = 1) -- 刪除表 drop table [dbo].[表名] GO
--------------- --判斷要創(chuàng)建臨時(shí)表是否存在 If Object_Id(’Tempdb.dbo.#Test’) Is Not Null Begin print ’存在’ End Else Begin print ’不存在’ End
--------------- -- 判斷要創(chuàng)建的存儲過程名是否存在 if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[存儲過程名]’) and OBJECTPROPERTY(id, N’IsProcedure’) = 1) -- 刪除存儲過程 drop procedure [dbo].[存儲過程名] GO
--------------- -- 判斷要創(chuàng)建的視圖名是否存在 if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[視圖名]’) and OBJECTPROPERTY(id, N’IsView’) = 1) -- 刪除視圖 drop view [dbo].[視圖名] GO
--------------- -- 判斷要創(chuàng)建的函數(shù)名是否存在 if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[函數(shù)名]’) and xtype in (N’FN’, N’IF’, N’TF’)) -- 刪除函數(shù) drop function [dbo].[函數(shù)名] GO
if col_length(’表名’, ’列名’) is null print ’不存在’
select 1 from sysobjects where id in (select id from syscolumns where name=’列名’) and name=’表名’
