一张成绩表,学生编号,课程,成绩 课程有五门:英语,

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  • select s.name,sum(case topless when 0 then totalscore else 0 end)数学,sum(case topless when 1 then totalscore else 0 end)语文,sum(case topless when 2 then totalscore else 0 end)英语,sum(case topless w...

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