随笔分类 -  数据库系统原理

数据库原理8个例子sql语句
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)
数据库原理8个例子sql语句
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)