thx (how stupid I am :-))
On 31. Júl, 14:17 h., Daniel Roseman <[email protected]> wrote: > On Jul 31, 12:54 pm, gentlestone <[email protected]> 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 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
