摘要: 第4章 子查询 4.2.1 Exist 谓语: use TSQLFundamentals2008 select * from Sales.Customers as C where c.country=N'Spain' select * from Sales.Customers as C where 阅读全文
posted @ 2016-06-03 11:18 easy5 阅读(377) 评论(0) 推荐(0)