[Django] #30532: Feature request: union queryset should raise on filter
Django
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Reporter: cgthayer | Owner: nobody
Type: Uncategorized | Status: new
Component: Uncategorized | Version: 2.2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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If a queryset results from a union() it would help to have filter() and
exclude() raise instead of return unpredictable results. I propose a
_is_union_result bool flag on querysets to track this.
/charles thayer
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Ticket URL: <https://code.djangoproject.com/ticket/30532>
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Django
-------------------------------------+-------------------------------------
Reporter: cgthayer | Owner: nobody
Type: | Status: closed
Cleanup/optimization |
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution: duplicate
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
Changes (by felixxm):
* status: new => closed
* type: Uncategorized => Cleanup/optimization
* component: Uncategorized => Database layer (models, ORM)
* version: 2.2 => master
* resolution: => duplicate
Comment:
Yes `filter()` and `exclude()` are unsupported but doesn't raise an error
yet. As
[https://docs.djangoproject.com/en/stable/ref/models/querysets/#union per
the documentation], ''"only LIMIT, OFFSET, COUNT(*), ORDER BY, and
specifying columns (i.e. slicing, count(), order_by(), and
values()/values_list()) are allowed on the resulting QuerySet."''.
Duplicate of #27995.
See also a ticket #28519 to support these features.
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Ticket URL: <https://code.djangoproject.com/ticket/30532#comment:1>