#29129: Child model updates parent model with empty fields making an extra 
query in
multi-inheritance when parent model has custom PK
-------------------------------------+-------------------------------------
     Reporter:  user0007             |                    Owner:  nobody
         Type:  Bug                  |                   Status:  new
    Component:  Database layer       |                  Version:  2.0
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:                       |             Triage Stage:  Accepted
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by Carlton Gibson):

 * cc: Simon Charette (added)
 * status:  closed => new
 * resolution:  duplicate =>


Comment:

 #31297 was opened and is a duplicate of this. This still occurs in Django
 3.0. Reproduced at a6b3938afc0204093b5356ade2be30b461a698c5. It looks like
 this use-case wasn't picked up as part of #29260. Possibly related to
 #18305.

 Simon, re-opening and CC-ing you to ask your opinion. (Thanks!)

-- 
Ticket URL: <https://code.djangoproject.com/ticket/29129#comment:3>
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