#30349: Using exclude on annotated FilteredRelation doesn't work
-------------------------------------+-------------------------------------
Reporter: Lucas Miller | Owner: robinh00d
Type: Bug | Status: assigned
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Lucas Miller):
Sure,
i've added setup datas to have a more explicit test :
{{{
cls.author3 = Author.objects.create(name='Rob')
cls.book5 = Book.objects.create(
title='Poem by Rob B',
editor=cls.editor_b,
author=cls.author3,
)
}}}
then i'm doing
{{{
self.assertSequenceEqual(
Author.objects.annotate(
book_alice=FilteredRelation('book',
condition=Q(book__title__startswith='The book by')),
).exclude(book_alice__title__contains="Jane"),
[self.author1]
)
}}}
this query should first get filter book starting with 'The book by' so
books numbers 2, 3 and 4 then exclude all books containing 'Jane' in the
name. We should end up with only the book 4.
The result here is book4 and book5 :
{{{
======================================================================
FAIL: test_with_join_exclude
(filtered_relation.tests.FilteredRelationTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/home/lucas/dev/test/django_lucas/tests/filtered_relation/tests.py", line
108, in test_with_join_exclude
[self.author1]
AssertionError: Sequences differ: <QuerySet [<Author: Alice>, <Author:
Rob>]> != [<Author: Alice>]
First sequence contains 1 additional elements.
First extra element 1:
<Author: Rob>
- <QuerySet [<Author: Alice>, <Author: Rob>]>
+ [<Author: Alice>]
}}}
The generated SQL is :
{{{
SELECT
"filtered_relation_author"."id",
"filtered_relation_author"."name",
"filtered_relation_author"."content_type_id",
"filtered_relation_author"."object_id"
FROM
"filtered_relation_author"
WHERE
NOT (
"filtered_relation_author"."id" IN (
SELECT
U1."author_id"
FROM
"filtered_relation_book" U1
WHERE
U1."title" LIKE % Jane % ESCAPE '\'
)
)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/30349#comment:7>
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