---------------
-- 判斷要?jiǎng)?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?jiǎng)?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?jiǎng)?chuàng)建的存儲(chǔ)過程名是否存在
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[存儲(chǔ)過程名]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
-- 刪除存儲(chǔ)過程
drop procedure [dbo].[存儲(chǔ)過程名]
GO

---------------
-- 判斷要?jiǎng)?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?jiǎng)?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'