#34464: QuerySet.count() regression on Django 4.2 with values() and annotate()
-------------------------------------+-------------------------------------
Reporter: Ian Cubitt | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: postgresql | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Mariusz Felisiak):
Django 4.1:
{{{#!sql
SELECT COUNT(*) FROM (
SELECT
DATE_TRUNC('hour',
"ticket_34464_samplemodel"."sample_datetime_field") AS "hour",
COUNT(*) AS "hour_count"
FROM "ticket_34464_samplemodel"
GROUP BY
DATE_TRUNC('hour',
"ticket_34464_samplemodel"."sample_datetime_field")
HAVING COUNT(*) >= 5
) subquery
}}}
Django 4.2:
{{{#!sql
SELECT COUNT(*) FROM (
SELECT
"ticket_34464_samplemodel"."id" AS "col1"
FROM "ticket_34464_samplemodel"
GROUP BY
DATE_TRUNC('hour',
"ticket_34464_samplemodel"."sample_datetime_field"),
1
HAVING COUNT(*) >= 5
) subquery
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/34464#comment:2>
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