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mysql 查询表中平均分最低的班级

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Release: 2016-06-07 18:01:17
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查询出dd(user_id,class_no,score)这个表中平均分最低的班级?

代码如下:
drop table if exists dd;
create table dd (
user_id int ,
class_no int ,
score int
);
insert into dd values (1,1,1), (2,1,1), (3,1,2), (4,2,2);
select class_no ,avg(score)from dd group by class_no order by avg(score);

在MySQL下面测试通过。
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