摘要: 1 select t.sname,t.ssex,t.class from STUDENT t 2 select distinct(depart) from teacher t 3 select * from student 4 select * from score r where r.degree 阅读全文
posted @ 2016-10-13 14:40 火山林风 阅读(148) 评论(0) 推荐(0)