MySQL - 具有日期的多個MAX值

Question

我有表結構：

A | B | C |日期

我想選擇MAX（A），MAX（B），MAX（C）和每個MAX分配日期...可以在MySQL中僅使用1個SELECT來完成（沒有時態表，如SELECT * FROM（SELECT ....））？

例子：

A | B | C | Date 
------------------------ 
10 | 20 | 0 | 25.5.2012 
0 | 13 | 7 | 25.3.2012 
70 | 5 | 15 | 25.4.2012 

Result: 
A -> 70 - 25.4.2012 
B -> 20 - 25.5.2012 
C -> 15 - 25.4.2012 

Answer 1

(SELECT 'A' AS ColumnM 
      , a AS Result 
      , Date 
    FROM tableX 
    ORDER BY a DESC 
     LIMIT 1 
) 
UNION ALL 
    (SELECT 'B' 
      , b 
      , Date 
    FROM tableX 
    ORDER BY b DESC 
     LIMIT 1 
) 
UNION ALL 
    (SELECT 'C' 
      , c 
      , Date 
    FROM tableX 
    ORDER BY c DESC 
     LIMIT 1 
) ; 

Answer 2

我認爲你需要這個::

Select 
MAX(a), 
MAX(b), 
MAX(c) 
from table 
GROUP BY `Date`