[var]
if exists (select * from sys.databases where name = ‘数据库名’)
drop database [数据库名]
[var]
if exists (select * from sysobjects where id = object_id(N'[表名]’) and OBJECTPROPERTY(id, N’IsUserTable’) = 1)
drop table [表名]
[var]
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]
[var]
if object_id(‘tempdb..#临时表名’) is not null
drop table #临时表名
[var]
–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]’
[var]
— 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
[var]
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*/
[var]
if exists(select * from syscolumns where id=object_id(‘表名’) and name=’列名’)
alter table 表名 drop column 列名
[var]
if columnproperty(object_id(‘table’),’col’,’IsIdentity’)=1
print ‘自增列’
else
print ‘不是自增列’
[var]
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。
