摘要: 1、select Sname , Ssex ,Class from t_hq_student;2、select distinct Depart from t_hq_teacher;3、select * from t_hq_student;4、select * from t_hq_Score wher... 阅读全文
posted @ 2015-10-28 10:27 北辰孤星 阅读(370) 评论(0) 推荐(0)