#29196: Chaining multiple filters duplicates `INNER JOIN` for the final query --------------------------------+-------------------------------------- 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 --------------------------------+--------------------------------------
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]. -- Ticket URL: <https://code.djangoproject.com/ticket/29196#comment:3> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/069.f7dcd91ae469c8b77abc4a83fe2d3ce0%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.