#29725: Inefficient SQL generated when counting a ManyToMany
-------------------------------------+-------------------------------------
Reporter: Gavin Wahl | Owner: oliver
Type: | Status: closed
Cleanup/optimization |
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution: fixed
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 Mariusz Felisiak <felisiak.mariusz@…>):
In [changeset:"e8de1cc94c9a251ba7c569468f1e94faf9a05671" e8de1cc9]:
{{{
#!CommitTicketReference repository=""
revision="e8de1cc94c9a251ba7c569468f1e94faf9a05671"
[2.2.x] Fixed #30325 -- Reverted "Fixed #29725 -- Removed unnecessary join
in QuerySet.count() and exists() on a many-to-many relation."
This reverts commit 1299421cadc4fcf63585f2f88337078e43e660e0 due to
a regression with custom managers.
Backport of 5f7991c42cff73b6278106d499d719b726f85ead from master
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/29725#comment:13>
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