MSSQL数据库逻辑文件名修改与查看

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-- Author : htl258(Tony)

-- Date : 2010-06-26 21:51:30

-- Version: Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)

-- Jul 9 2008 14:43:34

-- Copyright (c) 1988-2008 Microsoft Corporation

-- Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 2)

-- Blog : http://blog.111com.net/htl258 (转载保留此信息)

-- Subject: SQL查询与修改数据库逻辑文件名，移动数据库存储路径示例
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USE mydb

GO

--1.查询当前数据库的逻辑文件名
SELECT FILE_NAME(1) AS 'File Name 1', FILE_NAME(2) AS 'File Name 2';

--或通过以下语句查询：
--SELECT name FROM sys.database_files

/*

File Name 1 File Name 2

------------------- --------------------

mydb mydb_log

(1 行受影响)

*/

--2.修改数据文件或日志文件的逻辑名称
ALTER DATABASE [mydb]

MODIFY FILE ( NAME = mydb, NEWNAME = new_mydb )

ALTER DATABASE [mydb]

MODIFY FILE ( NAME = mydb_log, NEWNAME = new_mydb_log )

--查询更改后的名称：
SELECT FILE_NAME(1) AS 'File Name 1', FILE_NAME(2) AS 'File Name 2';

/*

File Name 1 File Name 2

------------------- --------------------

new_mydb new_mydb_log

(1 行受影响)

*/

--3.若要将数据文件或日志文件移至新位置,先OFFLINE把文件MOVE到相应的位置，然后再ONLINE

-- 详细参考以下步骤
--3.1 查询数据文件或日志文件当前存放路径：
SELECT physical_name FROM sys.database_files

/*

physical_name

-------------------------------------------------------------------------------------------

D:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/mydb.mdf

D:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/mydb_log.ldf

(2 行受影响)

*/

--3.2 移动路径
USE [master]

GO

--3.2.1 关闭所有进程
DECLARE @str VARCHAR(500);

SET @str = '';

SELECT @str = @str + 'KILL '+RTRIM(spid)+';'+CHAR(13)+CHAR(10)

FROM master.dbo.sysprocesses

WHERE dbid=DB_ID('mydb');

EXEC(@str);

GO

--3.2.2 设置数据库脱机
ALTER DATABASE [mydb] SET OFFLINE

GO

--3.2.3 移动数据文件与日志文件(为确保数据安全，建议改move为copy,复制成功后再删除源文件)

EXEC master..xp_cmdshell 'move "D:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/mydb.mdf" "E:/DBTEST"',NO_OUTPUT

EXEC master..xp_cmdshell 'move "D:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/mydb_log.LDF" "E:/DBTEST"',NO_OUTPUT

GO

--3.2.4 设置新的存储路径
ALTER DATABASE [mydb] MODIFY FILE (NAME = new_mydb,FILENAME = 'E:/DBTEST/mydb.mdf')

ALTER DATABASE [mydb] MODIFY FILE (NAME = new_mydb_log,FILENAME = 'E:/DBTEST/mydb_log.ldf')

GO

--3.2.5 设置数据库联机
ALTER DATABASE [mydb] SET ONLINE

GO

--3.2.6 查询新的路径
USE mydb

GO

SELECT physical_name FROM sys.database_files

/*

physical_name

------------------------------

E:/DBTEST/mydb.mdf

E:/DBTEST/mydb_log.ldf

(2 行受影响)

*/