"不支持联合主键"，如果必须用到怎么办？

在07-2-20，大郎 <iexper at gmail.com> 写道：
>
> 啊？这样？多谢多谢，呵~
>
> On 2/20/07, vicalloy <zbirder at gmail.com> wrote:
> >
> > 只能有一个主键（不支持联合主键），但可以有多个索引字段。
> > 你把主键和索引给搞混了。
> >
> > 在 07-2-19，大郎<iexper at gmail.com > 写道：
> > > 在 Django的文档中看到关于主键的说明是：
> > >
> > >
> > > > primary_key=True implies blank=False, null=False and unique=True.
> > Only one
> > > primary key is allowed on an object.
> > >
> > >
> > > http://www.djangoproject.com/documentation/model_api/
> > >
> > >
> > > 一个model只能有一个主键？这样的？
> > > 根据我以往的了解和经验：如果要用于排序的字段特别是数值类型的字段，设为主键能加快查询速度地。。。。
> > > --
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