#10929: Support a default value for Sum (and possibly other aggregation 
functions)
-------------------------------------+-------------------------------------
     Reporter:  nolan                |                    Owner:
         Type:  New feature          |                   Status:  new
    Component:  Database layer       |                  Version:  master
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:  aggregate annotate   |             Triage Stage:  Accepted
  default                            |
    Has patch:  1                    |      Needs documentation:  1
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by jarshwah):

 If you are running into this use case, you can use Coalesce(Sum('field'),
 0) in Django 1.8. At least until a decision is made on this ticket. If you
 want to bring this up on the ML for the other ORM people to have input,
 that'd be a good next step.

--
Ticket URL: <https://code.djangoproject.com/ticket/10929#comment:16>
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