#35947: prefetch_related makes duplicate queries for the same records by
different
relations
-------------------------------------+-------------------------------------
Reporter: Jake Douglas | Owner: (none)
Type: | Status: closed
Cleanup/optimization |
Component: Database layer | Version: 5.1
(models, ORM) |
Severity: Normal | Resolution: wontfix
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 Jake Douglas):
''All that to support the likely rare cases where the same relationship is
prefetched through different paths and happens to target the exact set of
objects''
For the record, here's an example request from our production application:
{{{
(313 queries including 279 similar and 242 duplicates)
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/35947#comment:2>
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