MSSQL database logical file name modification and view

What is the logical file name?

The program you use is connected with the database name, and then you right-click the property in your database, click "File" in the upper left corner, you can see that the database name and logical file name is not the same, you can look at the path of your database file

example, SQL query and modify database logical filename, mobile database storage path Sample.

The code is as follows

---------------------------------------------------------------------------------- --author:htl258 (Tony) --Date:2010-06-26 21:51:30 --Version:microsoft SQL Server 2008 (RTM)-10.0.1600.22 (Intel X86) --April 9 2008 14:43:34 --Copyright (c) 1988-2008 Microsoft Corporation --Developer Edition on Windows NT 5.1 <X86> (build 2600:service Pack 2) --blog:http://blog.csdn.net/htl258 (reprint keep this information) --Subject:sql Query and modify database logical file name, mobile database storage Path Example ---------------------------------------------------------------------------------- Use MyDB Go --1. Querying the logical file name of the current database SELECT file_name (1) as ' file name 1 ', file_name (2) as ' file name 2 '; --or query with the following statement: --select name from Sys.database_files /* File name 1 file name 2 ------------------- -------------------- MyDB Mydb_log (1 rows affected) */ --2. To modify the logical name of a data file or log file ALTER DATABASE [MyDB] MODIFY FILE (NAME = mydb, NEWNAME = new_mydb) ALTER DATABASE [MyDB] MODIFY FILE (NAME = mydb_log, NEWNAME = New_mydb_log) --the name after the query change: 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 rows affected) */ --3. To move a data file or log file to a new location, first offline the file to the appropriate location, and then online --detailed reference to the following steps --3.1 query data file or log file current storage path: 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 rows affected) */ --3.2 Move Path Use [master] Go --3.2.1 Close All Processes DECLARE @str VARCHAR (500); SET @str = '; SELECT @str = @str + ' KILL ' +rtrim (spid) + '; ' +char (+char) (10) From master.dbo.sysprocesses WHERE dbid=db_id (' mydb '); EXEC (@str); Go --3.2.2 Settings Database offline ALTER DATABASE [mydb] SET OFFLINE Go --3.2.3 mobile data files and log files (to ensure data security, we recommend that move to copy, copy successful and then delete the source file) 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 set a new storage path 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 Settings Database Online ALTER DATABASE [mydb] SET ONLINE Go --3.2.6 Query for new paths Use MyDB Go SELECT Physical_name from Sys.database_files /* Physical_name ------------------------------ E:/dbtest/mydb.mdf E:/dbtest/mydb_log.ldf (2 rows affected) */