Microsoft SQL xp_cmdshell doesn't like filenames with spaces. Can I replace the space with something else?

I have this TSQL code that dumps data from tables using BCP. It looks complicated, but it simply creates a @command string to be executed once for each table, then BCP dump the table records to disk. It's a nice way to backup all the table data quickly. Below I show the resolved version which is a little easier to read.

set @command = 
  'if (''?'' <> ''[dbo].[sysdiagrams]'') 
   BEGIN;
       create table #result (result nvarchar(2048) null );
       declare @temp nvarchar(1000); 
       set @temp = ''' +  @bcpPath + ' ' + @database + '.dbo.'' + 
           substring( ''开发者_运维问答?'', 8, len(''?'')- 8) +
           '' out "' + @driveLetter + @drivePath +
           '\'' + substring( ''?'', 8, len(''?'')- 8) + 
           ''.out" -c -x -t"|" -Uuser -Ppassword'';
       insert into #result (result)
       exec xp_cmdshell @temp;
       drop table #result;
   END;'
   exec sp_msforeachtable @command

the @bcppath is C:\Program Files\Microsoft SQL Server\90\Tools\Binn\bcp.exe which has a space.

Without using double quotes around the path "", it gives an error of 'C:\Program' is not recognized... With using double quotes, it gives the same error. With using double double quotes "" "", it says The filename, directory name, or volume label syntax is incorrect.

@command resolves to this when printed:

if ('?' <> '[dbo].[sysdiagrams]') 
BEGIN;
    create table #result (result nvarchar(2048) null );
    declare @temp nvarchar(1000); 
    set @temp = '"C:\Program Files\Microsoft SQL Server\90\Tools\Binn\bcp.exe" 
        myDB.dbo.' + 
        substring( '?', 8, len('?')- 8) +
        ' out "E:\DataExports\' + 
        substring( '?', 8, len('?')- 8) + '.out" -c -x -t"|" -Uuser -Ppassword';
    insert into #result (result)
    exec xp_cmdshell @temp;
    drop table #result;
END;

EDIT:

Oddly, I put an ECHO ? && in front of the "path" and it worked (surrounded by double quotes.) .... Why?

You have to put something before quoted path to avoid error C:\Program' is not recognized... so I used CALL statement and it worked for me ...

declare @cmd nvarchar(1000)

set @cmd = 'call "C:\Program Files\Microsoft SQL Server\90\Tools\Binn\bcp.exe" myDB.dbo.'
exec xp_cmdshell @cmd

Try specifying the short name for the parts of the path containing spaces For example, PROGRA~1 rather than Program Files. So, your first path would be something like C:\PROGRA~1\MI6841~1\90\Tools\Binn\bcp.exe. If you don't have any spaces, you should be able to drop the quotes.

If you perform a dir /x in the directory containing the long directory/file names you can obtain the short 8.3 name.

As workaround, you could use subst.

subst p: "C:\Program Files\Microsoft SQL Server\"

so you didn't need the spaced path anymore.

Or you try to find out why it fails.

exec xp_cmdshell 'cmd /c echo %cmdcmdline% "C:\Program Files\Microsoft SQL Server\90\Tools\Binn\bcp.exe"'

The cmdcmdline should show you the complete command, if the quotes are already there this should work

exec xp_cmdshell 'cmd /c "C:\Program Files\Microsoft SQL Server\90\Tools\Binn\bcp.exe" <the rest of your command>'

This weird construction also working:

exec xp_cmdshell '""%ProgramFiles%\WinRAR\"rar.exe a -v20M "C:\test\test.rar" "C:\test\data\""'