#32200: Aggregating when grouping on an ExpressionWrapper omits the expression 
from
the group by
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     Reporter:  Gordon Wrigley  |                    Owner:  nobody
         Type:  Uncategorized   |                   Status:  new
    Component:  Uncategorized   |                  Version:  3.1
     Severity:  Normal          |               Resolution:
     Keywords:                  |             Triage Stage:  Unreviewed
    Has patch:  0               |      Needs documentation:  0
  Needs tests:  0               |  Patch needs improvement:  0
Easy pickings:  0               |                    UI/UX:  0
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Comment (by Gordon Wrigley):

 To test this, given the implied model above, you can create 3 Fred
 objects, 2 with one value for bob_id and the third with a different value.
 When you do the select on that you should see `[{"bob_id__is_null": False,
 "id_count": 3}]`
 But instead you will get `[{"bob_id__is_null": False, "id_count": 1},
 {"bob_id__is_null": False, "id_count": 2}]`

-- 
Ticket URL: <https://code.djangoproject.com/ticket/32200#comment:4>
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