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热心市民杜垃圾 2018-12-24 06:57关注select * from stu,(select course,MAX(mark) as maxscore from stu group by course) temp where stu.mark = temp.maxscore and stu.course= temp.course
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select * from stu,(select course,MAX(mark) as maxscore from stu group by course) temp where stu.mark = temp.maxscore and stu.course= temp.course