On Mar 23, 6:17 am, Phlip <phlip2...@gmail.com> wrote:
> > Just create another queryset that excludes everything in your first
> > queryset:
>
> > negated_queryset = User.objects.exclude(id__in=queryset.values("id"))
>
> QuerySets are already so easy to plug-n-play... Ain't there a way to
> do it without whacking the database twice?Are you sure it hits the db twice? I seem to recall a similar case where I thought I was, but since the queryset evaluation is lazy, the ORM potentially has the ability to make this into a single query. (I can't recall if when I did this sort of thing I was using SQLAlchemy, but I _think_ it was pure django). Matt. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
