摘要：
为说明其差别，建立一张数据表，插入几条数据create table tblStudent(id nvarchar(10) primary key,name nvarchar(21)not null,)insert into tblStudent(id,name) values('2008110101','张三');insert into tblStudent(id,name) values('2008110102','李四');insert into tblStudent(id,name) values('20081101 阅读全文
posted @ 2012-06-19 20:27 softwaror 阅读(386) 评论(0) 推荐(0) 编辑