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Code Issues 32 Releases Wiki Activity

Fixed #33996 -- Fixed CheckConstraint validation on NULL values.

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Bug in 667105877e.

Thanks James Beith for the report.
This commit is contained in:
David Sanders
2022-09-09 00:02:58 +10:00
committed by Mariusz Felisiak
parent b731e88415
commit e14d08cd89
7 changed files with 42 additions and 7 deletions
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9
docs/ref/models/constraints.txt
View File

@@ -102,6 +102,15 @@ specifies the check you want the constraint to enforce.
For example, ``CheckConstraint(check=Q(age__gte=18), name='age_gte_18')``
ensures the age field is never less than 18.
.. admonition:: Oracle
Checks with nullable fields on Oracle must include a condition allowing for
``NULL`` values in order for :meth:`validate() <BaseConstraint.validate>`
to behave the same as check constraints validation. For example, if ``age``
is a nullable field::
CheckConstraint(check=Q(age__gte=18) | Q(age__isnull=True), name='age_gte_18')
.. versionchanged:: 4.1
The ``violation_error_message`` argument was added.

3
docs/releases/4.1.2.txt
View File

@@ -15,3 +15,6 @@ Bugfixes
* Fixed a regression in Django 4.1 that caused aggregation over a queryset that
contained an ``Exists`` annotation to crash due to too many selected columns
(:ticket:`33992`).
* Fixed a bug in Django 4.1 that caused an incorrect validation of
``CheckConstraint`` on ``NULL`` values (:ticket:`33996`).