我想为给定表的所有学生获取按“主题”分组的max（HA）和max（Total）

Question

我想为给定表的所有学生获取按“主题”分组的max（HA）和max（Total）

Date        Sem   Section   Subject    USN    Name     Status     HA   Total
-----------|------|----------------------------------------------------------------
2013-11-11    1      A         c       01   Akshay    present      1    2
2013-11-11    1      A         c       02   David     absent       1    2
2013-11-11    1      A        .net     01   Akshay    absent       1    2
2013-11-11    1      A        .net     02   David     present      2    2
2013-11-12    1      A         c       01   Akshay    absent       0    1
2013-11-12    1      A         c       02   David     present      1    1
2013-11-12    1      A        .net     01   Akshay    present      1    1
2013-11-12    1      A        .net     02   David     present      1    1


REsult should be:

Sem   Section   Subject   USN    Name     HA   Total
-----|--------|---------|------|--------|-----|------
1        A       c        01    Akshay    1      2
1        A       c        02    David     1      2
1        A     .net       01    Akshay    1      2
1        A     .net       02    David     2      2

请..帮助...

Answer 1

  select sem,section,subject,usn, Name, max(HA), MAX(total)
    from table
    group by sem, section, subject, usn, naam