自己留着,还把引号都转了下=。=!换行等 格式化 呵呵 方便后面用
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]
- if exists (select * from sys.databases where name = '数据库名')
- drop database [数据库名]
- 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'[表名]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
- drop table [表名]
- 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'[存储过程名]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
- drop procedure [存储过程名]
- if object_id('tempdb..#临时表名') is not null
- drop table #临时表名
- if object_id('tempdb..#临时表名') is not null
- drop table #临时表名
- --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 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]'
- -- 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
- 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]
- 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
- */ 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
- */
- 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('表名') and name='列名')
- alter table 表名 drop column 列名
- 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
- 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
- if exists(select * from sysindexes where id=object_id('表名') and name='索引名')
- print '存在'
- else
- print '不存在
- if exists(select * from sysindexes where id=object_id('表名') and name='索引名')
- print '存在'
- else
- print '不存在
- SELECT * FROM sys.sysobjects WHERE name='对象名' SELECT * FROM sys.sysobjects WHERE name='对象名'