#25298: Forbid QuerySet filtering by a related field that expects a single value
when multiple values are returned
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Reporter: timgraham | Owner: nobody
Type: | Status: new
Cleanup/optimization |
Component: Database | Version: 1.8
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 |
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As raised in #25284, different databases error in different cases on
queries like `Model.objects.filter(related_id=RelatedModel.objects.all())`
* PostgreSQL, always.
* MySQL, if the subquery returns multiple results.
* SQLite, never.
It would be useful to see if we could always throw an error in this case.
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Ticket URL: <https://code.djangoproject.com/ticket/25298>
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