#34840: Django 4.2 casts text fields when testing IS NULL, preventing use of
partial indexes
-------------------------------------+-------------------------------------
Reporter: Alex Vandiver | Owner: murtatah
Type: Bug | Status: assigned
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Florian Apolloner):
Regarding my comment
https://code.djangoproject.com/ticket/34840#comment:11 -- The validation
error is wrong there, it is actually a database area that is masked
(https://github.com/django/django/pull/15659#pullrequestreview-1629960210).
I wonder if we could teach the ORM to only add casts when using bind
params, there is no reason to add those for column refs. That is unless
our testsuite doesn't miss some further important edge cases :)
At the very least we will need instructions (release notes, maybe a blog
post) for people on how to check whether they are affected and how to fix
it.
--
Ticket URL: <https://code.djangoproject.com/ticket/34840#comment:15>
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