Question

我有一个MySQL表ScoreArchive，其中包含以下字段：

ID（int），主键

Date（日期）

Score（int）

我每天在表格中记录每个Score的{{1}}。

现在，我希望找到最高分数增加的ID，例如，2011-04-22和2011-05-31。

如何使用MySQL查询找到这些？

Answer 1

尝试类似：

select id, max(score) - min(score) as diff ... group by id order by diff desc

编辑（跟进评论）：

或类似的东西：

select id, final_scores.score - start_scores.score as diff
from (
   select id, min(date) as min_date, max(date) as max_date
   from scores
   where date between ...
   group by id
   ) as ranges
join scores as final_scores
on final_scores.date = ranges.min_date
join scores as start_scores
on start_scores.date = ranges.max_date
where ...
order by diff desc

Answer 2

SELECT score FROM ScoreArchive WHERE date BETWEEN 2011-04-22 AND 2011-05-31 ORDER BY score DESC;

这就是我如何在pgsql中做到这一点我猜测mysql是相同的

MYSQL查询获取值在两个日期之间增加最多的记录

2 个答案: