-- 查询任何一门课程成绩在 70 分以上的姓名、课程名称和分数
SELECT sc.Sid, student.Sname,course.Cname,sc.score FROM sc,course,student WHERE sc.score >70 AND sc.Sid = student.Sid AND sc.Cid = course.Cid;
SELECT sc.Sid, student.Sname,course.Cname,sc.score FROM sc,course,student WHERE sc.score >70 AND sc.Sid = student.Sid AND sc.Cid = course.Cid;