Select max value from column along with its corresponding date [duplicate]

Question

This question already has an answer here:

Get Max value and corresponding column (1 answer)

Closed 8 years ago.

Anyone know how I can get the date that corresponds to the maximum score per game_id, per level please:

----------------------------------------
|id |game_id |level |score |date       |
----------------------------------------
|1  |0       |1     |90    |1391989720 |
|1  |0       |1     |95    |1391989721 |
|1  |1       |1     |4     |1391989722 |
|1  |1       |1     |8     |1391989723 |
|1  |1       |2     |6     |1391989724 |
----------------------------------------

    SELECT cdu_user_progress.game_id, 
           cdu_user_progress.level, 
           max_score, 
           cdu_user_progress.date 
    FROM 
    (
        SELECT game_id, level, MAX(score) AS max_score
        FROM cdu_user_progress 
        GROUP BY game_id, level 
    ) AS ms 
    JOIN cdu_user_progress ON cdu_user_progress.game_id = ms.game_id AND 
                              cdu_user_progress.level = ms.level AND 
                              cdu_user_progress.score = ms.max_score 

Now what if I ALSO want to get the score for the FIRST game_id (per level) and it's date, to get this output:

-----------------------------------------------------------------
|game_id |level |max_score |max_date   |first_score |first_date |
-----------------------------------------------------------------
|0       |1     |95        |1391989721 |90          |1391989720 |
|1       |1     |8         |1391989723 |4           |1391989722 | 
|1       |2     |6         |1391989724 |6           |1391989724 |
-----------------------------------------------------------------

Answer 1

Because it's mysql, you can simply do this to pull the whole row with the highest score per game:

select * from (
  select *
  from cdu_user_progress
  order by score desc) x
group by game_id

This works because of mysql non-standard group by functionality, whereby it returns the first row encountered for each group when not all the non-aggregate columns are named in the group by clause.