如何完整的修改一个数据库的名称

/*

该脚本示例如何完整的修改一个数据库的名称.

数据库为原名称为DB_BEIJING，需要修改成DB_SHANGHAI

nzperfect 2012.12.19

*/

--判断是否存在同名的数据库，以防止误删除

USE master

GO

IF EXISTS (SELECT name FROM sys.databases WHERE name = N'DB_BEIJING')

BEGIN

RAISERROR('请注意：数据库已存在！',15,1)

RETURN

--DROP DATABASE DB_BEIJING

END

GO

USE master

GO

--创建测试数库

CREATE DATABASE [DB_BEIJING]

ON PRIMARY

(

NAME = N'DB_BEIJING',

FILENAME = N'X:\DATA\DB_BEIJING.mdf' ,

SIZE = 3072KB ,

FILEGROWTH = 1024KB

)

LOG ON

(

NAME = N'DB_BEIJING_log',

FILENAME = N'W:\Log\DB_BEIJING_log.ldf' ,

SIZE = 1024KB ,

FILEGROWTH = 1024KB

)

GO

--以下为修改过程

--step 1 : 修改数据库名称

USE master

GO

ALTER DATABASE DB_BEIJING SET SINGLE_USER WITH ROLLBACK IMMEDIATE

GO

EXEC master..sp_renamedb 'DB_BEIJING','DB_SHANGHAI'

GO

ALTER DATABASE DB_SHANGHAI SET MULTI_USER

GO

--step 2 : 查看修改名称后的数据库逻辑名及物理文件名

USE master

GO

SELECT name AS [Logical Name], physical_name AS [DB File Path],type_desc AS [File Type],

state_desc AS [State] FROM sys.master_files

WHERE database_id = DB_ID(N'DB_SHANGHAI')

GO

/*

Logical NameDB File PathFile TypeState

DB_BEIJINGX:\DATA\DB_BEIJING.mdfROWSONLINE

DB_BEIJING_logW:\Log\DB_BEIJING_log.ldfLOGONLINE

*/

--step 3 : 修改数据库逻辑文件名称

USE master

GO

ALTER DATABASE DB_SHANGHAI SET SINGLE_USER WITH ROLLBACK IMMEDIATE

GO

ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME=N'DB_BEIJING', NEWNAME=N'DB_SHANGHAI')

GO

ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME=N'DB_BEIJING_log', NEWNAME=N'DB_SHANGHAI_log')

GO

ALTER DATABASE DB_SHANGHAI SET MULTI_USER

GO

--step 4 : 修改数据库物理文件名称之前先打开xp_cmdshell支持

USE master

GO

sp_configure 'show advanced options',1

GO

RECONFIGURE WITH OVERRIDE

GO

sp_configure 'xp_cmdshell', 1

GO

RECONFIGURE WITH OVERRIDE

GO

--step 5 : 重命名数据库物理文件名称

USE [master]

GO

ALTER DATABASE DB_SHANGHAI SET OFFLINE WITH ROLLBACK IMMEDIATE

GO

EXEC xp_cmdshell 'RENAME "X:\DATA\DB_BEIJING.mdf", "DB_SHANGHAI.mdf"'

GO

EXEC xp_cmdshell 'RENAME "W:\Log\DB_BEIJING_log.ldf", "DB_SHANGHAI_log.ldf"'

GO

--step 6 : 将数据库逻辑名称指向新的物理文件，并将数据库online

USE [master]

GO

ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME =DB_SHANGHAI, FILENAME = 'X:\DATA\DB_SHANGHAI.mdf')

GO

ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME =DB_SHANGHAI_log, FILENAME = 'W:\LOG\DB_SHANGHAI_log.ldf')

GO

ALTER DATABASE DB_SHANGHAI SET ONLINE

--step 7 : 查看全部修改完成后的数据库情况

USE master

GO

SELECT name AS [Logical Name], physical_name AS [DB File Path],type_desc AS [File Type],

state_desc AS [State] FROM sys.master_files

WHERE database_id = DB_ID(N'DB_SHANGHAI')

GO

/*

Logical NameDB File PathFile TypeState

DB_SHANGHAIX:\DATA\DB_SHANGHAI.mdfROWSONLINE

DB_SHANGHAI_logW:\LOG\DB_SHANGHAI_log.ldfLOGONLINE

*/

--step 8 : 关闭xp_cmdshell支持

USE master

GO

sp_configure 'xp_cmdshell', 0

GO

RECONFIGURE WITH OVERRIDE

GO

sp_configure 'show advanced options',0

GO

RECONFIGURE WITH OVERRIDE

GO

用alter语句进行修改。语法：alter table 表名 modify 字段名 字段类型(字段长度)说明：如果是date等没有长度的类型，字段长度部分可以省略。如：目前test表属性如下要将name列的字段类型改为date类型，可用如下语句：alter table test modify name date此时可见name列的类型已经更新成功。注意事项：如果表中有数据尽量不要使用此语句，会造成数据丢失，应在备份的情况下进行修改。

方法如下：\x0d\x0a1、打开要修改的数据库文件。\x0d\x0a2、打开sql查询\x0d\x0a3、在sql中输入修改语句。要用update这个语句。update语句的具体用法如下：\x0d\x0aSQL Server UPDATE语句的语法如下：\x0d\x0aupdate set = where \x0d\x0a\x0d\x0a下面是语法选项简介：\x0d\x0a表的名称。该表包含了要修改值的列\x0d\x0a要修改数据的列的名称\x0d\x0a要输入到列中的新值\x0d\x0a这是UPDATE语句中最重要的部分。\x0d\x0a通过指定一个好的搜索条件，你能够限定表内被修改的行数。如果你不指定搜索条件，SQLServer会用新值修改表内的所有行\x0d\x0a4、修改完成后，关闭数据库文件即可。

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