如何将xml输出TSQL查询转换为varchar输出

I am trying to generate

我想要生成

SELECT DISTINCT
        P.DOMAIN_ID,
        P.SOURCE_SYSTEM_ID
FROM    EDW.dbo.DOMAIN_VALUE AS P
WHERE   P.ID = 4
        AND CURRENT_FLAG = 'Y'
EXCEPT
( SELECT    F.DOMAIN_ID,
            F.SOURCE_SYSTEM_ID
  FROM      EDW.dbo.DOMAIN AS F
  WHERE     F.ID = 4
            AND F.CURRENT_FLAG = 'Y'
)
FOR     XML PATH('DOMAIN'),
            ROOT('DOMAIN_VALUE')  
SELECT DISTI