access中如何构造一条数据

[gingerkang]

在mssql中可以这样构造一条数据
select 0 as ClassId,'主类别' as ClassName union all select ClassId,ClassName from IClass order by classid
这样可以使Iclass的查询结果多出一条数据 0,主类别
可是在access中不支持这个语法提示:查询输入必须包含至少一个表或查询
郁闷,不知道该怎么书写sql语句能达到同样的效果

[wwwwb]

select 0 as ClassId,'主类别' as ClassName from IClass union all select ClassId,ClassName from IClass order by classid

[gingerkang]

select 0 as ClassId,'主类别' as ClassName from IClass union all select ClassId,ClassName from IClass order by classid
没报错了,可是有两条 0,主类别出来了
改成
select 0 as ClassId,'主类别' as ClassName from IClass union select ClassId,ClassName from IClass order by classid 就好了
非常感谢wwwwb