SQL:Brug et beregnet felt fra SELECT i WHERE-udtrykket

Brug en CTE (Common Table Expression) - en slags "inline"-visning kun til den næste sætning:

;WITH MyCTE AS
(
    SELECT 
        RANK() OVER(PARTITION BY XXX ORDER BY yyy,zzz,oooo) as ranking, 
        * 
    FROM SomeTable
) 
SELECT * 
FROM MyCTE
WHERE ranking = 1 --> this is now possible!