#34254: Exists annotations can return non-boolean results (i.e. None) if used 
with
an empty QuerySet.
-------------------------------------+-------------------------------------
     Reporter:  Keryn Knight         |                    Owner:
                                     |  rajdesai24
         Type:  Bug                  |                   Status:  assigned
    Component:  Database layer       |                  Version:  dev
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:  Exists               |             Triage Stage:  Accepted
  EmptyQuerySet sqlite postgres      |
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by rajdesai24):

 Hey Simon the changes are done. The only thing is my test is pretty
 simple, which is testing the exact query that Keryn reported. Do tell me
 if any issues with the PR or any changes to the tests.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/34254#comment:7>
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