#25414: invalid annotate query for mysql when primary key is included
-------------------------------------+-------------------------------------
Reporter: svniemeijer | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: mysql, annotate | 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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Changes (by charettes):
* needs_docs: => 0
* needs_better_patch: => 0
* version: 1.8 => master
* needs_tests: => 0
* stage: Unreviewed => Accepted
Comment:
I didn't reproduce but by looking at
[https://github.com/django/django/blob/233b46f93171d4a7cc279bc3f35e5a99e9a167b8/django/db/models/sql/compiler.py#L136-L154
collapse_group_by()'s MySQL special casing] I can see how this is an
issue.
On MySQL the existing code collapse the `GROUP BY` clause to the queryset
model's primary key if it's present. It should also account for
expressions referring to aliases other than the initial table just like
the branch for PostgreSQL does.
--
Ticket URL: <https://code.djangoproject.com/ticket/25414#comment:1>
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