Hi Sebastien! Thanks for you reply. I'm a newbie on Django and I must confess unfortunately I don't know everything yet ;-). So I saw that you made a snippet regarding about the use of Django Cube. So, where do I put this snippet: at my views.py? Or should I do another class at my models.py?
Thanks so much! Regards, Rogério Carrasqueira --- e-mail: rogerio.carrasque...@gmail.com skype: rgcarrasqueira MSN: rcarrasque...@hotmail.com ICQ: 50525616 Tel.: (11) 7805-0074 2010/10/29 sebastien piquemal <seb...@gmail.com> > Hi ! > > You could also give django-cube a try : > http://code.google.com/p/django-cube/ > Unlike Mikhail's app, the aggregates are not efficient (because no > optimization is made, I am working on this), but this is more than > enough if you have a reasonable amount of data (less than millions of > rows !!!). > Use the following code, and you should have what you need : > > from cube.models import Cube > > class SalesCube(Cube): > > month = Dimension('date_created__absmonth', > queryset=Sale.objects.filter(date_created__range=(init_date,ends_date))) > > @staticmethod > def aggregation(queryset): > return queryset.count() > > The advantage is that if you want to add more dimensions (type of sale/ > place/month, etc ...), you can do it very easily. > Hope that helps, and don't hesitate to ask me if you can't have it > working (documentation is not very good yet). > > On Oct 29, 12:54 am, Mikhail Korobov <kmik...@googlemail.com> wrote: > > Hi Rogério, > > > > You can givehttp://bitbucket.org/kmike/django-qsstats-magic/srca > > 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<django-users%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > > -- 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.
