Re: annotations only in 1.1 ?

thx

(how stupid I am :-))

On 31. Júl, 14:17 h., Daniel Roseman <dan...@xxxxxxxxxxxxxx> wrote:
> On Jul 31, 12:54 pm, gentlestone <tibor.b...@xxxxxxxxxxx> wrote:
>
> > I want find all instances of model KeyWord, where ManyToMany field
> > categories is empty. I think in versieon 1.1 is the appropriate code
> > like this:
>
> > ... KeyWord.objects.annotate(cnt = Count(categories)).filter(cnt =
> > 0) ...
>
> > What is the similar code in old version 1.0 for resolve the same
> > result. Should I use extra() method and go to the table level
> > (SELECT ...) ?
>
> You don't need annotations for this at all.
>
>     KeyWord.objects.filter(category__isnull=True)
>
> --
> DR
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