How to use Server.MapPath() in SQLServer

There is no direct support for the Server.MapPath() function in SQL Server. Server.MapPath() is an auxiliary function in ASP.NET used to convert a passed virtual path to a physical path on the server.

If you need to retrieve the physical path in SQL Server, you can use the xp_cmdshell stored procedure to execute operating system commands.

Here is an example of using xp_cmdshell to retrieve the physical path of a file.

DECLARE @cmd VARCHAR(8000)
DECLARE @result TABLE (output VARCHAR(8000))

-- 要获取物理路径的文件的虚拟路径
DECLARE @virtualPath VARCHAR(200) = '/myfolder/myfile.txt'

-- 构建命令
SET @cmd = 'dir ' + @virtualPath

-- 执行命令
INSERT INTO @result
EXEC xp_cmdshell @cmd

-- 从结果中提取物理路径
DECLARE @physicalPath VARCHAR(200)
SELECT @physicalPath = output
FROM @result
WHERE output LIKE '%<DIR>%'

-- 输出物理路径
SELECT @physicalPath AS PhysicalPath

Please be aware that using xp_cmdshell carries some security risks and limitations. Make sure to only allow trusted users or roles to execute this stored procedure, and only allow executing commands that you have determined to be safe.