您的位置:首页 - 教程 - Sql Server - 正文
sql server判断表是否存在

1、判断数据表是否存在

  方法一:

use yourdb;
go

if object_id(N'tablename',N'U') is not null
print '存在'
else
print '不存在'


例如:
use fireweb;
go

if object_id(N'TEMP_TBL',N'U') is not null
print '存在'
else
print '不存在'

 

方法二:

USE [实例名]
GO

IF EXISTS  (SELECT  * FROM dbo.SysObjects WHERE ID = object_id(N'[表名]') AND OBJECTPROPERTY(ID, 'IsTable') = 1)
PRINT '存在'
ELSE
PRINT'不存在'


例如:
use fireweb;
go

IF EXISTS  (SELECT  * FROM dbo.SysObjects WHERE ID = object_id(N'TEMP_TBL') AND OBJECTPROPERTY(ID, 'IsTable') = 1)
PRINT '存在'
ELSE
PRINT'不存在'

2、临时表是否存在:

方法一:
use fireweb;
go

if exists(select * from tempdb..sysobjects where id=object_id('tempdb..##TEMP_TBL'))
PRINT '存在'
ELSE
PRINT'不存在'


方法二:
use fireweb;
go

if exists (select * from tempdb.dbo.sysobjects where id = object_id(N'tempdb..#TEMP_TBL') and type='U')
PRINT '存在'
ELSE
PRINT'不存在'


评论: