Wybór SQL, określone wiersze na podstawie wielu warunków?

;WITH x AS 
(
  SELECT [Business_Month], ID, Calls, Transferred, Loaded,
    rn = ROW_NUMBER() OVER 
    (PARTITION BY ID, [Business Month] ORDER BY Loaded DESC)
  FROM dbo.yourtable
)
SELECT [Business Month], ID, Calls, Transferred, Loaded
FROM x
WHERE rn = 1
ORDER BY ID, [Business Month];