#24065: aggregate dont find column of annotate
-------------------------------------+-------------------------------------
Reporter: mateuspadua | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.7
(models, ORM) | Keywords: aggregate annotate
Severity: Normal | fielderror
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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If we try this query, everything works normally
{{{
Entry.objects.annotate(num_authors=Count('authors')).aggregate(Avg('num_authors'))
}}}
but if we try the one below, it does not find the column ''authors__count'
to the aggregation
{{{
Entry.objects.annotate(Count('authors')).aggregate(Avg('authors__count'))
}}}
I believe it is a problem because the exception tells us we could use the
column ''''authors__count''''
This is what the exception says:
'''FieldError: Cannot resolve keyword 'count' into field. Choices are:
email, entry, id, name, authors__count''' <- see the field here.
Thanks.
--
Ticket URL: <https://code.djangoproject.com/ticket/24065>
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