如何修改這個查詢也返回列d

Question

SELECT ColA, MAX(CONVERT(varchar(15),ColB) + ' ' + CONVERT(varchar(15),ColC)) 
FROM  dbo.TableX 
GROUPBY ColA 

Answer 1

RE：您的評論。「這導致具有非唯一可樂返回的行」

看着your previous question我認爲你需要像

;WITH X AS 
(
SELECT ColA, 
     ColD, 
     RANK() OVER (PARTITION BY ColA ORDER BY CONVERT(varchar(15),ColB) + ' ' + CONVERT(varchar(15),ColC) DESC) Rnk 
FROM  dbo.TableX 
) 
SELECT ColA, ColD, Rnk 
FROM X 
WHERE Rnk = 1; 

Answer 2

SELECT 
    ColA, MAX(CONVERT(varchar(15),ColB) + ' ' + CONVERT(varchar(15),ColC)), 
    ColD 
FROM 
    dbo.TableX 
GROUP BY 
    ColA, ColD