SELECt t1.S# as 学生ID,t1.C# as 课程ID,Score as 分数
FROM SC t1
WHERe score IN (SELECt TOP 3 score
FROM SC
WHERe t1.C#= C#
ORDER BY score DESC)
ORDER BY t1.C#;

SELECt t1.S# as 学生ID,t1.C# as 课程ID,Score as 分数
FROM SC t1
WHERe score IN (SELECt TOP 3 score
FROM SC
WHERe t1.C#= C#
ORDER BY score DESC)
ORDER BY t1.C#;