#27388: Filter chaining results in unnecessary joins (and degenerate
performance)
-------------------------------------+-------------------------------------
Reporter: Connor Osborn | Owner: nobody
Type: Uncategorized | Status: closed
Component: Database layer | Version: 1.9
(models, ORM) |
Severity: Normal | Resolution: invalid
Keywords: queryset, join, | Triage Stage:
performance | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Connor Osborn):
That's pretty surprising to me, thanks for linking me to the docs. I'm
still interested in finding a solution for my application. It looks like
if I set the `filter_is_sticky` flag it gets reset to false in the next
filter. So in order to have a chain each one must be add that flag, is
that right?
--
Ticket URL: <https://code.djangoproject.com/ticket/27388#comment:2>
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 [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/066.b1c79a9fe90415023d66f41028532b6c%40djangoproject.com.
For more options, visit https://groups.google.com/d/optout.
