来自带有 SUM() 和多行的子查询的 Max() 值

Question

我尝试编写一个显示子查询最大值的 mysql 查询，但我没有。 我有这个工作正常的主查询。 此查询选择每支球队在特定比赛中的总得分：

SELECT team_id, SUM(points) as totalpointsscored, game_id 
FROM BOXSCORES 
WHERE season="1920" and categorie=2 
GROUP BY team_id, game_id

输出是这样的：

team_id | value (points scored) | game_id
    ASM |                    98 | 9117338
    ASM |                   104 | 9117335
    ASM |                    75 | 9117324
    LEM |                   128 | 9117380
    LEM |                    97 | 9117316
    STR |                    95 | 9117334
    STR |                   102 | 9117177
    STR |                    88 | 9117469

我想现在选择每个球队的最大值，以了解球队在哪场比赛中得分最高。 所以，输出将是：

ASM | 104 | 9117335
LEM | 128 | 9117380
STR | 102 | 9117177

我尝试使用 group by 和 have，但它不起作用。 team_id & value 没问题，但 game_id 总是第一行，而不是 game_id 附加到值。 你能帮我找到最好的解决方案吗？

Answer 1

在 MySQL 8.0 中，您可以使用窗口函数：

select *
from (
    select 
        team_id, 
        sum(points) as total_points_scored, 
        game_id,
        rank() over(partition by team_id order by sum(points) desc) rn
    from boxscores
    where season = '1920' and categorie = 2 
    group by team_id, game_id
) t
where rn = 1

在早期版本中，一种解决方案是：

select 
    team_id, 
    sum(points) as total_points_scored, 
    game_id
from boxscores b
where season = '1920' and categorie = 2 
group by team_id, game_id
having sum(points) = (
    select sum(points) 
    from boxscore b1
    where b1.season = b.season and b1.categorie = b.categorie and b1.team_id = b.team_id
    group by game_id
    order by sum(points) desc
    limit 1
)

Answer 2

我修好了它。

我只是在第一个查询中添加季节和类别，如下所示：

select 
    team_id, 
    sum(points) as total_points_scored, 
    game_id, season, categorie
from BOXSCORES b
where season= '1920' and categorie = 2 
group by team_id, game_id
having sum(points) = (
    select sum(points) 
    from BOXSCORES b1
    where b1.season= b.season and b1.categorie = b.categorie and b1.team_id= b.team_id
    group by game_id
    order by sum(points) desc
    limit 1
)