#33127: "&" and "|" operators are silently ignored after QuerySet.union(),
intersection(), and difference().
-------------------------------------+-------------------------------------
Reporter: Maxwell | Owner: nobody
Tietze |
Type: | Status: new
Cleanup/optimization |
Component: Database | Version: 3.1
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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This looks like a similar issue to the one fixed in
[https://code.djangoproject.com/ticket/27995 #27995]
Example:
{{{
class MyModel(models.Model):
name = models.CharField()
for name in ['a', 'b', 'c']:
MyModel.objects.create(name=name)
group1 = MyModel.objects.filter(name='a')
group2 = MyModel.objects.filter(name='b')
group3 = MyModel.objects.filter(name='c')
combined_group = group1.union(group2)
group_and = combined_group & group1
group_or = combined_group | group 3
}}}
In this example, combined_group, group_and and group_or all have the same
SQL. These operators should raise an exception if they can not be applied
after combinator functions.
--
Ticket URL: <https://code.djangoproject.com/ticket/33127>
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