#30572: Composed queries cannot change the list of columns with
values()/values_list().
-------------------------------------+-------------------------------------
Reporter: felixxm | Owner: felixxm
Type: Bug | Status: assigned
Component: Database | Version: master
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: Accepted | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
Composed queries cannot change the list of columns when
`values()/values_list()` is evaluated multiple times, e.g.
{{{
>>> ReservedName.objects.create(name='a', order=2)
>>> qs1 = ReservedName.objects.all()
>>> print(qs1.union(qs1).values_list('name', 'order').get())
('a', 2)
>>> print(qs1.union(qs1).values_list('order').get())
('a', 2)
}}}
(see
[https://github.com/django/django/blob/6e8303d49ba55e7393c7ef5553b240ae0d2f0c00/django/db/models/sql/compiler.py#L428-L433
compiler.py#L428-L433]).
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Ticket URL: <https://code.djangoproject.com/ticket/30572>
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