django most efficient way to count same field values in a query

Question

Lets say if I have a model that has lots of fields, but I only care about a charfield. Lets say that charfield can be anything so I don\'t know the possible values, but I kn

Answer 1

You can use Django's Count aggregation on a queryset to accomplish this. Something like this:

from django.db.models import Count
queryset = MyModel.objects.all().annotate(count = Count('my_charfield'))
for each in queryset:
    print "%s: %s" % (each.my_charfield, each.count)