use [db_student]
go
if exists (select *from dbo.sysobjects where id = object_id('[dbo].[t_student]')and objectproperty(id,'isusertable') = 1)
drop table [dbo].[student]
go
create table [dbo].[student]
([s_studentno][char](8)collate chinese_prc_ci_as not null,
[s_name][char](20)collate chinese_prc_ci_as not null,
[s_sex][char](2)collate chinese_prc_ci_as not null,
[s_department][char](20)collate chinese_prc_ci_as not null,
[s_class][char](10)collate chinese_ prc_ci_as not null,
[s_birthday][datetime](8)
[s_entrance][char](6)collate chinese_prc_ci_as not null)
on [primary]

alter table [dbo].[student]with nocheck add
constraint [pk_student]primary key clustered
([s_studentno])
on [primary]
go

服务器: 消息 448，级别 16，状态 2，行 6
排序规则 'chinese_' 无效。

后来我进行了一些更改：把排序规则去掉了,还有[datetime]后不可以限制字段宽度．这是为什么呀．下面这个语句就可以执行．可我有点不明白
create table [dbo].[student]
([s_studentno][char](8)not null,
[s_name][char](20)not null,
[s_sex][char](2)not null,
[s_department][char](20)not null,
[s_class][char](10)not null,
[s_birthday][datetime]
[s_entrance][char](6)not null)
on [primary]

alter table [dbo].[student]with nocheck add
constraint [pk_student]primary key clustered
([s_studentno])
on [primary]
go