#12886: .aggregate() does not honour sliced queryset
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Reporter: t...@subnetz.org | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.2-beta
Keywords: | Stage: Unreviewed
Has_patch: 0 |
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If I aggregate a sliced queryset, the result is an aggregate across the
whole unsliced queryset:
{{{
In [97]: qs = Encounter.objects.all()
In [98]: qs.aggregate(**aggregations)
Out[98]: {'total_no_of_adults': 19, 'total_no_of_children': 8,
'total_no_of_dogs': 2}
In [99]: qs[0:5].aggregate(**aggregations)
Out[99]: {'total_no_of_adults': 19, 'total_no_of_children': 8,
'total_no_of_dogs': 2}
}}}
It works though if .annotate() is called first, even if no annotations are
given:
{{{
In [100]: qs[0:5].annotate().aggregate(**aggregations)
Out[100]: {'total_no_of_adults': 8, 'total_no_of_children': 8,
'total_no_of_dogs': 2}
}}}
The latter are the correct figures for my example model.
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Ticket URL: <http://code.djangoproject.com/ticket/12886>
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