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 st.*,sc1.s_score "语文",sc2.s_score "数学" FROM student st left join score sc1 on st.s_id = sc1.s_id and sc1.c_i 阅读全文
posted @ 2020-05-15 22:35 陌笠人灬苼 阅读(525) 评论(0) 推荐(0) 编辑