#30151: QuerySet.last() and [] operator give different results
-------------------------------------+-------------------------------------
Reporter: NMO13 | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 1.11
(models, ORM) |
Severity: Normal | Resolution: invalid
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 Tim Graham):
* status: new => closed
* component: Uncategorized => Database layer (models, ORM)
* type: Uncategorized => Bug
* resolution: => invalid
Comment:
As far as I can tell from the code you gave, the slice is operating on an
unordered queryset. There's no guarantee as to what ordering the database
will return. `last()` gives ordering by primary key if the queryset isn't
ordered.
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Ticket URL: <https://code.djangoproject.com/ticket/30151#comment:3>
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