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Mysql 每个团队最多可获得2个用户,结果最好_Mysql_Sql_Group By - Fatal编程技术网

Mysql 每个团队最多可获得2个用户,结果最好

Mysql 每个团队最多可获得2个用户,结果最好,mysql,sql,group-by,Mysql,Sql,Group By,这可能吗 我需要获得最多2个用户的每个团队与最大的结果 以下结果是每队中得分最高的两名球员: | id | user | team | month | result | |----|-------|--------|-------|--------| | 1 | Joe | red | sept | 100 | | 2 | Joe | red | oct | 40 | | 3 | Jim | red | sept | 70

这可能吗

我需要获得最多2个用户的每个团队与最大的结果

以下结果是每队中得分最高的两名球员:

| id | user  | team   | month | result |
|----|-------|--------|-------|--------|
| 1  | Joe   | red    | sept  | 100    |
| 2  | Joe   | red    | oct   | 40     |
| 3  | Jim   | red    | sept  | 70     |
| 4  | Jim   | red    | oct   | 50     |
| 5  | Susy  | red    | sept  | 40     |
| 6  | Tim   | blue   | sept  | 60     |
| 7  | Tim   | blue   | oct   | 100    |
| 8  | Betty | blue   | sept  | 70     |
| 9  | Dave  | blue   | sept  | 20     |
| 10 | Stan  | green  | oct   | 40     |
| 11 | Alan  | green  | sept  | 80     |
| 12 | Tina  | green  | oct   | 100    |
| 13 | Tina  | green  | sept  | 30     |
| 14 | Rick  | yellow | oct   | 50     |
| 15 | Ellen | yellow | oct   | 60     |

或者,对多个查询来说,这是唯一真正的方法吗?

您可以尝试以下方法:

| 1  | Joe   | red    | sept  | 100    |
| 3  | Jim   | red    | sept  | 70     |
| 7  | Tim   | blue   | oct   | 100    |
| 8  | Betty | blue   | sept  | 70     |
| 12 | Tina  | green  | oct   | 100    |
| 11 | Alan  | green  | sept  | 80     |
| 15 | Ellen | yellow | oct   | 60     |
| 14 | Rick  | yellow | oct   | 50     |

您可以尝试以下操作:

| 1  | Joe   | red    | sept  | 100    |
| 3  | Jim   | red    | sept  | 70     |
| 7  | Tim   | blue   | oct   | 100    |
| 8  | Betty | blue   | sept  | 70     |
| 12 | Tina  | green  | oct   | 100    |
| 11 | Alan  | green  | sept  | 80     |
| 15 | Ellen | yellow | oct   | 60     |
| 14 | Rick  | yellow | oct   | 50     |

您可以这样做:

select t.*
from `tbl` t
where ( select count(*)
        from `tbl`
        where `team` = t.`team` and `result` >= t.`result` ) < 3

您可以这样做:

select t.*
from `tbl` t
where ( select count(*)
        from `tbl`
        where `team` = t.`team` and `result` >= t.`result` ) < 3

'最多2'??你的意思是因为一个团队可能只有一个结果?是的,一个团队可能只有一个成员“最多2个”??你的意思是因为一个团队可能只有一个结果?是的,一个团队可能只有一个成员谢谢编辑@Mihai谢谢编辑@Mihai