ALTER DATABASE/ADD FILE/VARIABLE FILENAME？

Question

我想将文件/文件组添加到现有数据库,但我需要从变量中获取路径,因为在完成此脚本时它将有所不同.当我在SQL Management Studio 2008 R2中检查脚本时,它会返回错误FILENAME = @Path.

我该如何使用该变量？

脚本不会从命令行开始!

ALTER DATABASE [MyDB]
ADD FILEGROUP [MyDB_FileStream] CONTAINS FILESTREAM
GO

DECLARE @Path VARCHAR(MAX)
SET @Path = 'C:\whatEverIWantItToBe\ThisCouldChangeWithLogic\YouGetThePoint\'

ALTER DATABASE [MyDB]
ADD FILE
  (NAME = 'MyDB_FileStream'
   , FILENAME = @Path
   )
TO FILEGROUP [MyDB_FileStream]

Answer 1

使用动态SQL:

Declare @Path nvarchar(max)
Declare @Sql nvarchar(max)

Set @Path = 'C:\whatEverIWantItToBe\ThisCouldChangeWithLogic\YouGetThePoint\'

Set @Sql = 'Alter Database [MyDb]
    Add File( Name = ''MyDb_FileStream''
            , FileName = ' + QuoteName( @Path, '''' ) 
            + ') To FileGroup [MyDbFileStream]'

Exec( @Sql )