#28107: Can't perform annotation on related table when relation between tables 
not
on primary key
-------------------------------------+-------------------------------------
     Reporter:  powderflask          |                    Owner:  nobody
         Type:  Uncategorized        |                   Status:  new
    Component:  Database layer       |                  Version:  1.11
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:  QuerySet.extra       |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by Simon Charette):

 * cc: Simon Charette (added)


Comment:

 It's possible that's an edge case with the handling of `to_field`.

 Would it be possible for your to provide all the models involved in the
 queryset you're generating as it's really hard to figure out if the issue
 actually lies in the _GROUP BY_ logic without a set of models to reproduce
 the issue.

--
Ticket URL: <https://code.djangoproject.com/ticket/28107#comment:1>
Django <https://code.djangoproject.com/>
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