题解 | #获得积分最多的人(一)#
获得积分最多的人(一)
http://www.nowcoder.com/practice/1bfe3870034e4efeb4b4aa6711316c3b
select B.name,sum(A.grade_num) as cnt from
grade_info A
join user B
on A.user_id = B.id
where A.type = 'add'
group by A.user_id
order by cnt desc
limit 1
