摘要: if not object_id('Class') is null drop table ClassGoCreate table Class([Student] nvarchar(2),[Course] nvarchar(2),[Score] int)Insert Classselect N'张三',N'语文',78 union allselect N'张三',N'数学',87 union all... 阅读全文
posted @ 2009-09-10 14:51 小师傅 阅读(171) 评论(0) 推荐(0) 编辑