Aggregation of an annotation in GROUP BY in Django

Question

UPDATE

Thanks to the posted answer, I found a much simpler way to formulate the problem. The original question can be seen in the revision history.

Answer 1

Your problem comes from values() follow by annotate(). Order are important. This is explain in documentation about [order of annotate and values clauses]( https://docs.djangoproject.com/en/1.10/topics/db/aggregation/#order-of-annotate-and-values-clauses)

.values('pub_id') limit the queryset field with pub_id. So you can't annotate on income

The values() method takes optional positional arguments, *fields, which specify field names to which the SELECT should be limited.