--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'IF',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