#30796: Chaining select_related mutates original QuerySet.
-------------------------------------+-------------------------------------
     Reporter:  Darren Maki          |                    Owner:  Simon
                                     |  Charette
         Type:  Bug                  |                   Status:  closed
    Component:  Database layer       |                  Version:  2.2
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:  fixed
     Keywords:  select_related       |             Triage Stage:  Accepted
  prefetch_related mutate queryset   |
    Has patch:  1                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Simon Charette):

 It's already released in Django 3.0 and won't be backported to 2.2 LTS
 since this bug has been around for a few years before getting identified
 and thus isn't a recent regression.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30796#comment:8>
Django <https://code.djangoproject.com/>
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