SQL:Tìm bản ghi tối đa cho mỗi nhóm

select
  Name, Top, Total
from
  sometable
where
  Total = (select max(Total) from sometable i where i.Name = sometable.Name)

hoặc

select
  Name, Top, Total
from
  sometable
  inner join (
    select max(Total) Total, Name
    from sometable
    group by Name
  ) as max on max.Name = sometable.Name and max.Total = sometable.Total