成绩表score的结构:
如何查询每门课程最高分的学生的学号,课程号,成绩?
答案:
select t1.sid,t1.cid,t1.scorefrom score t1where t1.score = (select max(t2.score)from score t2where t2.cid = t1.cidgroup by t2.cid)
如果要知道学生的姓名:
select t1.sid,s.name,t1.cid,t1.scorefrom score t1inner join stu son t1.sid=s.idwhere t1.score = (select max(t2.score)from score t2where t2.cid = t1.cidgroup by t2.cid)
参考:/link?url=1hVfu2fzddmSlZkn0El-bpyuQHX2egJGRsTLqDs8-UQOwjO5XxlBO_PEZ6yI9Vvpf9oMe-6BXV98W-SIT0ynsiDmhZbX95rL5P49hiPDLe_