需要学生在每个科目中得分最高分

Question

我有三张桌子..

Student 
Id     Name 
1      vesd
2      Eet

Subject table 
Id   name 
1    Science 
2    maths 

Marks 
Stud_id    Sub_id  Marks 
1             1      20
1             2      30
2             1      40
2             2      50 

我需要学生在每个科目中得分的最大分数。

Answer 1

这是

SELECT student.name, subject.name, MAX(mark) FROM marks INNER JOIN student ON marks.student_id = student.id INNER JOIN subject ON marks.subject_id = subject.id GROUP BY student.name,subject.name;

您可以在此处查看http://sqlfiddle.com/#!9/bcd3d/1