How to query as GROUP BY in django?

Question

I query a model:

Members.objects.all()

And it returns:

Eric, Salesman, X-Shop
Freddie, Manager, X2-Shop
Teddy, Salesman, X2         


        

Answer 1

If you mean to do aggregation you can use the aggregation features of the ORM:

from django.db.models import Count
Members.objects.values('designation').annotate(dcount=Count('designation'))

This results in a query similar to

SELECT designation, COUNT(designation) AS dcount
FROM members GROUP BY designation

and the output would be of the form

[{'designation': 'Salesman', 'dcount': 2}, 
 {'designation': 'Manager', 'dcount': 2}]