#6422: Support for 'DISTINCT ON' queries with QuerySet.distinct()
-------------------------------------+-------------------------------------
Reporter: Manfred Wassmann | Owner: jgelens
<manolo@…> | Status: assigned
Type: New feature | Version: SVN
Component: Database layer | Resolution:
(models, ORM) | Triage Stage: Accepted
Severity: Normal | Needs documentation: 0
Keywords: dceu2011 | Patch needs improvement: 1
Has patch: 1 | UI/UX: 0
Needs tests: 0 |
Easy pickings: 0 |
-------------------------------------+-------------------------------------
Changes (by ramiro):
* needs_better_patch: 0 => 1
* stage: Ready for checkin => Accepted
Comment:
I've update the patch with:
* The new tests failed for me because on my environment the
`Tag.objects.order_by('parent__pk').distinct('parent')` call choose
`['<Tag: t2>', '<Tag: t4>', '<Tag: t1>']` instead of `['<Tag: t3>',
'<Tag: t45', '<Tag: t1>']`. Had to use `order_by('parent__pk', 'pk')`
instead.
* Fleshed out a bit documentation changes:
* I'd like the note about the need to use an `order_by()` call to be
more clear. -- I'm clearing RFC because of this.
* Added some examples of usage based on my interpretation of the new
functionality.
* Moved the addition to the AUTHORS file to the right spot
(lexicographical ordering by last name)
--
Ticket URL: <https://code.djangoproject.com/ticket/6422#comment:55>
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