摘要: 1. 查询" 01 "课程比" 02 "课程成绩高的学生的信息及课程分数 select s.sid,s.Sname,s.Sage, s.Ssex,a.score from student as s, (select score,sid from sc where c='01') as a, (sel 阅读全文
posted @ 2022-03-10 14:11 山山花花 阅读(494) 评论(0) 推荐(0)