id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
19512	Aggregate or Annotaion on previously Annotated values	eye-see-you@…	nobody	"{{{
from django.db.models import Count, Sum, F

myModel.objects \
               .annotate(a_count=Count('field_a'), b_count=Count('field_b')) \
               .annotate(total=F('a_count')+F('b_count')) \
               .order_by('total')
}}}

This query is going to raise `AttributeError: 'ExpressionNode' object has no attribute 'split'`

I don't find any method in django ORM to support such kind of operations (in which two fields are involved)."	New feature	new	Database layer (models, ORM)	1.4	Normal		django, annotate, aggregate		Design decision needed	0	0	0	0	0	0