摘要: 1.查询课程编号为“01”的课程比“02”的课程成绩高的所有学生的学号(重点) SELECT a.s_id,a.s_score FROM (SELECT * FROM score WHERE c_id='01') as a INNER JOIN (SELECT * FROM score WHERE 阅读全文
posted @ 2020-03-08 16:33 aggressive2019 阅读(361) 评论(0) 推荐(0) 编辑