mysql distinct或

Question

SELECT DISTINCT(player2) FROM logs 
WHERE player1=3 
ORDER BY time DESC 

是否有可能使用該查詢返回其他非明顯的cols？

還是我其他的解決方案：

SELECT * FROM logs 
WHERE player1=3 
GROUP BY player2 ORDER BY time DESC 

這工作得很好，但它不正確排序。它挑選組中的第一個。

表例如：

player1 player2 time 
3  5  1 
3  5  2 
3  6  3 

我希望它返回：

player2 time 
5  2 
6  3 

但它（與集團）返回：

player2 time 
5  1 
6  3 

Answer 1

試試這個：

SELECT player2, MAX(time) AS time 
    FROM logs 
WHERE player1=3 
GROUP BY player2 
ORDER BY time DESC 

Answer 2

SELECT player2, max(`time`) as max_time 
FROM logs 
WHERE player1 = 3 
GROUP BY player2 

Answer 3

SELECT player2, MAX(time) AS time 
FROM logs 
WHERE player1=3 
GROUP BY player2 
ORDER BY MAX(time)