Hi Rogério, You can give http://bitbucket.org/kmike/django-qsstats-magic/src a try. It currently have efficient aggregate lookups (1 query for the whole time series) only for mysql but it'll be great if someone contribute efficient lookups for other databases :)
On 28 окт, 19:31, Rogério Carrasqueira <rogerio.carrasque...@gmail.com> wrote: > Hello! > > I'm having an issue to make complex queries in django. My problem is, I have > a model where I have the sales and I need to make a report showing the sales > amount per month, by the way I made this query: > > init_date = datetime.date(datetime.now()-timedelta(days=365)) > ends_date = datetime.date(datetime.now()) > sales = > Sale.objects.filter(date_created__range=(init_date,ends_date)).values(date_ > created__month).aggregate(total_sales=Sum('total_value')) > > At the first line I get the today's date past one year > after this I got the today date > > at sales I'm trying to between a range get the sales amount grouped by > month, but unfortunatelly I was unhappy on this, because this error > appeared: > > global name 'date_created__month' is not defined > > At date_created is the field where I store the information about when the > sale was done., the __moth was a tentative to group by this by month. > > So, my question: how to do that thing without using a raw sql query and not > touching on database independence? > > Thanks so much! > > Rogério Carrasqueira > > --- > e-mail: rogerio.carrasque...@gmail.com > skype: rgcarrasqueira > MSN: rcarrasque...@hotmail.com > ICQ: 50525616 > Tel.: (11) 7805-0074 -- 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.