Question

我有一张桌子，我每天都会记录用户的多个分数。我正在尝试创建一个查询，在那里我获得每周通过的前5名每周获胜者...

我是否需要在最高分和日期周进行子查询分组？或者我需要做一个2个子查询，一个用于另一个最高得分的日期，然后使用外部查询进行分组？

表格结构如下：

NAME, 
SCORE, 
DATE

我想出了这个

SELECT * 
FROM `highscores` 
WHERE id IN ((SELECT id 
              FROM highscores 
              WHERE WEEK(date) IN (SELECT DISTINCT WEEK(date) 
                                   FROM highscores) 
              ORDER BY score DESC)) 
GROUP BY email 
ORDER BY date, score DESC

但显然我不能在子查询中使用LIMIT

Answer 1

我认为这对你有用。它还应该带回来，如果有的话（假设一周之内的第5个最高得分是两个人之间的关系，这将使他们两个回到那个星期，所以你有6行的那个周）。

select *
  from highscores x
 where x.score >=
       (select max(e.score)
          from highscores e
         where week(e.date) = week(x.date)
           and e.score <
               (select max(d.score)
                  from highscores d
                 where week(d.date) = week(x.date)
                   and d.score <
                       (select max(c.score)
                          from highscores c
                         where week(c.date) = week(x.date)
                           and c.score <
                               (select max(b.score)
                                  from highscores b
                                 where week(b.date) = week(x.date)
                                   and b.score <
                                       (select max(a.score)
                                          from highscores a
                                         where week(a.date) = week(x.date))))))
 order by date, score desc

每周前5名记录

1 个答案: