django/docs/releases/5.1.1.txt

==========================
Django 5.1.1 release notes
==========================

*Expected September 3, 2024*

Django 5.1.1 fixes several bugs in 5.1.

Bugfixes
========

* Fixed a regression in Django 5.1 that caused a crash of ``Window()`` when
  passing an empty sequence to the ``order_by`` parameter, and a crash of
  ``Prefetch()`` for a sliced queryset without ordering (:ticket:`35665`).
[5.1.x] Added stub release notes for 5.1.1. Backport of 790f0f8868b0cde9a9bec1f0621efa53b00c87df from main. 2024-08-07 10:38:36 -03:00			`==========================`
			`Django 5.1.1 release notes`
			`==========================`

			`Expected September 3, 2024`

			`Django 5.1.1 fixes several bugs in 5.1.`

			`Bugfixes`
			`========`

[5.1.x] Fixed #35665 -- Fixed a crash when passing an empty order_by to Window. This also caused un-ordered sliced prefetches to crash as they rely on Window. Regression in e16d0c176e9b89628cdec5e58c418378c4a2436a that made OrderByList piggy-back ExpressionList without porting the empty handling that the latter provided. Supporting explicit empty ordering on Window functions and slicing is arguably a foot-gun design due to how backends will return undeterministic results but this is a problem that requires a larger discussion. Refs #35064. Thanks Andrew Backer for the report and Mariusz for the review. Backport of 602fe961e6834d665f2359087a1272e9f9806b71 from main. 2024-08-09 08:43:20 -04:00			* Fixed a regression in Django 5.1 that caused a crash of ``Window()`` when
			passing an empty sequence to the ``order_by`` parameter, and a crash of
			``Prefetch()`` for a sliced queryset without ordering (:ticket:`35665`).