#36388: QuerySet.union no longer supports empty args
-------------------------------------+-------------------------------------
Reporter: Antoine Humeau | Owner: Colleen
| Dunlap
Type: Bug | Status: assigned
Component: Database layer | Version: 5.2
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Simon Charette):
No, the branch you linked is gated by a `if isinstance(self,
EmptyQuerySet)` and `qs` is a list of all non-empty querysets. Django is
able to detect when a queryset cannot match any rows (the most common
example is `filter(pk=[])`) and the logic you linked deals with this case.
What I mean is that if the `*other_qs` args capture is empty then you can
immediately return as `some_set OR not other set` means `some_set`.
--
Ticket URL: <https://code.djangoproject.com/ticket/36388#comment:13>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion visit
https://groups.google.com/d/msgid/django-updates/01070196d590ce18-b1d7b101-e744-460c-b92e-cefce872502f-000000%40eu-central-1.amazonses.com.
