Derived table?SELECT r.KimLikKey , CAST(r.Telefon AS VARCHAR(50))FROM ( SELECT K.KimlikKey AS KimLikKey , STUFF( ( SELECT ',' + TEL.TelNo FROM TEL WHERE TEL.KimlikKey = dbo.K.KimlikKey FOR XML PATH('')) , 1 , 1 , '') AS Telefon FROM KIMLIK K ) AS rCharlie===============================================================Msg 3903, Level 16, State 1, Line 1736The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION