如下
下面查询返回 file_ID 为 1 的文件名(master)。
USE master
SELECT FILE_NAME(1)
当我们进行从一个备份中还原数据库或附加数据库时,数据库的逻辑文件名是不会改变的。
可用 ALTER DATABASE 的 MODIFY FILE 子句作为替代方式更改数据文件或日志文件的逻辑名称。
alter database 数据库名
modify file (
name=逻辑名
,newname=新逻辑名
)
其实,上面语句是更改了sysfiles和sysfiles1系统表中的name字段。
BTW:其实在SQL2005的客户端工具中,已经可以直接在属性->文件中直接修改了。
另外请注意:SQL2000的Database如果在SQL2005附加后,将无法再在SQL2000中附加,会返回603错误。
/*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
Name
DB
File
Path
File
Type
State
DB_BEIJING
X:\DATA\DB_BEIJING.mdf
ROWS
ONLINE
DB_BEIJING_log
W:\Log\DB_BEIJING_log.ldf
LOG
ONLINE
*/
--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
Name
DB
File
Path
File
Type
State
DB_SHANGHAI
X:\DATA\DB_SHANGHAI.mdf
ROWS
ONLINE
DB_SHANGHAI_log
W:\LOG\DB_SHANGHAI_log.ldf
LOG
ONLINE
*/
--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
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