--查看对象是否已经存在 --数据库是否存在 --if exists (select * from sys.databases where name = ’数据库名’) -- drop database [数据库名] if exists(select * from sys.databases where name='FGM_POS') print '存在' --drop database [数据库名] --表是否存在 --if exists (select * from sysobjects where id = object_id(N’[表名]’) and OBJECTPROPERTY(id,N’IsUserTable’) = 1) -- drop table [表名] if exists (select * from sysobjects where id =OBJECT_ID(N'[FGM_bt_ePlnMain]') and OBJECTPROPERTY(id,N'IsUserTable')=1) print '存在' --drop table [表名] --或 if exists (select * from sysobjects where id =OBJECT_ID(N'dbo.FGM_bt_ePlnMain') and OBJECTPROPERTY(id,N'IsUserTable')=1) print '存在' --存储过程是否存在 --if exists (select * from sysobjects where id = object_id(N’[存储过程名]’) and OBJECTPROPERTY(id,N’IsProcedure’) = 1) -- drop procedure [存储过程名] if exists (select * from sysobjects where id =OBJECT_ID(N'[FGM_sp_SyncePlnMain]') and OBJECTPROPERTY(id,N'IsProcedure')=1) print '存在' --或 if exists (select * from sysobjects where id =OBJECT_ID(N'dbo.FGM_sp_SyncePlnMain') and OBJECTPROPERTY(id,N'IsProcedure')=1) print '存在' --临时表是否存在 --if object_id(’tempdb..#临时表名’) is not null -- drop table #临时表名 select * into #temp from dbo.FGM_bt_ConsumInfoDetail_B if OBJECT_ID ('tempdb..#temp')is not null print '存在' --或者 if exists(select * from tempdb.dbo.sysobjects where id=OBJECT_ID(N'tempdb..#temp')and type='U') print '存在' --视图是否存在 ----sql Server 2000 --IF EXISTS (SELECT * FROM sysviews WHERE object_id = '[dbo].[视图名]' ----sql Server 2005 --IF EXISTS (SELECT * FROM sys.views WHERE object_id = '[dbo].[视图名]' --sql Server 2000 --IF EXISTS (SELECT * FROM sysviews WHERE object_id = '[dbo].[视图名]’ ----sql Server 2005 --IF EXISTS (SELECT * FROM sys.views WHERE object_id = ’[dbo].[视图名]’ ----sql Server 2008 if exists (select * from sysobjects where id=OBJECT_ID(N'[dc_adplan]') and type='V') print '存在' --或 if exists (select * from sysobjects where id=OBJECT_ID(N'dbo.dc_adplan') and type='V') print '存在' --drop view dbo.dc_adplan --函数是否存在 --if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[函数名]’) and xtype in (N’FN’,N’IF’,N’TF’)) -- drop function [dbo].[函数名] if exists (select * from dbo.sysobjects where id=OBJECT_ID (N'dbo.GetResourceName')and xtype in (N'FN',N'IF',N'TF')) print '存在' --或 if exists (select * from dbo.sysobjects where id=OBJECT_ID (N'[GetResourceName]')and xtype in (N'FN',N'TF')) print '存在' --drop function dbo.GetResourceName --列是否存在 --if exists(select * from syscolumns where id=object_id(’表名’) and name=’列名’) -- alter table 表名 drop column 列名 if exists(select * from syscolumns where id =OBJECT_ID('FGM_bt_ePlnMain') and name='ePlnName') print '存在' --alter table 表名 drop column 列名 --判断列是否自自增列 --if columnproperty(object_id('table'),'col’,’IsIdentity’)=1 -- print '自增列' --else -- print '不是自增列' if COLUMNPROPERTY(object_id ('FGM_bt_ePlnMain'),'ePlnID','IsIdentity')=1 print '自增列' else print '非' --查看数据库中对象 --select * from sys.sysobjects where name='对象名' select * from sys.sysobjects where name='FGM_bt_ePlnMain' --获取用户创建的对象信息 SELECT [name],[id],crdate FROM sysobjects where xtype='U' /* xtype 的表示参数类型，通常包括如下这些 C = CHECK 约束 D = 默认值或 DEFAULT 约束 F = FOREIGN KEY 约束 L = 日志 FN = 标量函数 IF = 内嵌表函数 P = 存储过程 PK = PRIMARY KEY 约束（类型是 K） RF = 复制筛选存储过程 S = 系统表 TF = 表函数 TR = 触发器 U = 用户表 UQ = UNIQUE 约束（类型是 K） V = 视图 X = 扩展存储过程 */ 本文出自 “Don't KNow” 博客，请务必保留此出处http://3941954.blog.51cto.com/3931954/774083
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