#29196: Chaining multiple filters duplicates `INNER JOIN` for the final query
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Reporter: Ivaylo Donchev | Owner: nobody
Type: Bug | Status: closed
Component: Uncategorized | Version: 1.11
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage: Unreviewed
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 Ivaylo Donchev):
Ah, I see. I hit the problem with this behaviour using
`https://github.com/carltongibson/django-filter` - no matter what relation
you have there will always be filter chaining if you have multiple filters
at once. Anyway, it's my mistake. Thank you for the quick response!!!
Replying to [comment:2 Simon Charette]:
> This is expected `filter(A, B)` and `filter(A).filter(B)` don't behave
the same when multi-valued relationships are involved
[https://docs.djangoproject.com/en/2.0/topics/db/queries/#lookups-that-
span-relationships as documented].
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Ticket URL: <https://code.djangoproject.com/ticket/29196#comment:3>
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