#29668: missing FROM-clause entry in subquery with extra
-------------------------------------+-------------------------------------
Reporter: pranavneeraj | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 2.0
(models, ORM) |
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Tim Graham):
* status: new => closed
* resolution: => invalid
Old description:
> Turn.active_objects.all().select_related('request__address').extra(select={'start_time_tz':
> '(start_time AT TIME ZONE COALESCE("api_address".timezone))'}).distinct()
> Works but
> Turn.active_objects.all().select_related('request__address').extra(select={'start_time_tz':
> '(start_time AT TIME ZONE
> COALESCE("api_address".timezone))'}).distinct().count() doesn't.
>
> Because count executes subquery.
New description:
`Turn.active_objects.all().select_related('request__address').extra(select={'start_time_tz':
'(start_time AT TIME ZONE COALESCE("api_address".timezone))'}).distinct()`
Works but
`Turn.active_objects.all().select_related('request__address').extra(select={'start_time_tz':
'(start_time AT TIME ZONE
COALESCE("api_address".timezone))'}).distinct().count()` doesn't.
Because count executes subquery.
--
Comment:
Even if it's still an issue, we're no longer fixing bugs with
`QuerySet.extra()` per [https://groups.google.com/d/topic/django-
developers/FojuU0syO8Y/discussion discussion on django-developers].
--
Ticket URL: <https://code.djangoproject.com/ticket/29668#comment:5>
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