判断sqlserver对象是否已存在

 

--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
*/