sql server 判斷是否存在數(shù)據(jù)庫，表，列，視圖

1 判斷數(shù)據(jù)庫是否存在 if exists (select * from sys.databases where name = ‘?dāng)?shù)據(jù)庫名’) drop database [數(shù)據(jù)庫名]

2 判斷表是否存在 if exists (select * from sysobjects where id = object_id(N’[表名]’) and OBJECTPROPERTY(id, N’IsUserTable’) = 1) drop table [表名]

3 判斷存儲過程是否存在 if exists (select * from sysobjects where id = object_id(N’[存儲過程名]’) and OBJECTPROPERTY(id, N’IsProcedure’) = 1) drop procedure [存儲過程名]

4 判斷臨時表是否存在 if object_id(‘tempdb..#臨時表名’) is not null drop table #臨時表名

5 判斷視圖是否存在

–判斷是否存在’MyView52’這個試圖 IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME = N’MyView52’) PRINT ‘存在’ else PRINT ‘不存在’ 6 判斷函數(shù)是否存在 – 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’)) drop function [dbo].[函數(shù)名]

7 獲取用戶創(chuàng)建的對象信息

SELECT [name],[id],crdate FROM sysobjects where xtype=’U’

8 判斷列是否存在 if exists(select * from syscolumns where id=object_id(‘表名’) and name=’列名’) alter table 表名 drop column 列名

9 判斷列是否自增列 if columnproperty(object_id(‘table’),’col’,’IsIdentity’)=1 print ‘自增列’ else print ‘不是自增列’

SELECT * FROM sys.columns WHERE object_id=OBJECT_ID(‘表名’) AND is_identity=1

10 判斷表中是否存在索引

if exists(select * from sysindexes where id=object_id(‘表名’) and name=’索引名’) print ‘存在’ else print ‘不存在’

刪除索引 drop index 表名.索引名

11 查看數(shù)據(jù)庫中對象

SELECT * FROM sys.sysobjects WHERE name=’對象名’ SELECT * FROM sys.sysobjects WHERE name=’對象名’

from : http://www.cnblogs.com/JohnnyBao/p/3799054.html