1 判断数据库是否存在
if exists (select * from sys.databases where name = '数据库名')
drop database [数据库名]2 判断表是否存在
if exists (select * from sysobjects where id = object_id(N'[表名]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [表名]3 判断存储过程是否存在
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]4 判断临时表是否存在
if object_id('tempdb..#临时表名') is not null
drop table #临时表名5 判断视图是否存在
--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]'6 判断函数是否存在
-- 判断要创建的函数名是否存在
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] -- 判断要创建的函数名是否存在 7 获取用户创建的对象信息
SELECT [name],[id],crdate FROM sysobjects where xtype='U'
8 判断列是否存在
if exists(select * from syscolumns where id=object_id('表名') and name='列名')
alter table 表名 drop column 列名9 判断列是否自增列
if columnproperty(object_id('table'),'col','IsIdentity')=1
print '自增列'
else
print '不是自增列' 10 判断表中是否存在索引
if exists(select * from sysindexes where id=object_id('表名') and name='索引名')
print '存在'
else
print '不存在11 查看数据库中对象
SELECT * FROM sys.sysobjects WHERE name='对象名'以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
