#25377: Regression in expressions refactor causes database queries to run
COUNT('*') instead of COUNT(*)
-------------------------------------+-------------------------------------
Reporter: adamchainz | Owner: nobody
Type: | Status: new
Cleanup/optimization |
Component: Database layer | Version: 1.8
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by adamchainz):
I'm not 100% confident in my performance measurement there, I just tried
on a multi-million row table on my production DB converted to MyISAM and
`COUNT(*)` measured the same as `COUNT('*')`. However since there are so
many database versions and storage engines out there I think it's probable
this caused a regression somewhere.
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Ticket URL: <https://code.djangoproject.com/ticket/25377#comment:3>
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