摘要: 习题select s#,score from sc where c#=2select s.s#,s.sname from s,sc where s.s#=sc.s# and c#=2select distinct s.s#,s.sname from s,sc,c,t ... 阅读全文
posted @ 2010-12-30 11:02 饺子吃遍天 阅读(142) 评论(0) 推荐(0)
摘要: 习题select s#,score from sc where c#=2select s.s#,s.sname from s,sc where s.s#=sc.s# and c#=2select distinct s.s#,s.sname from s,sc,c,t ... 阅读全文
posted @ 2010-12-30 11:02 饺子吃遍天 阅读(143) 评论(0) 推荐(0)