#33282: django.db.utils.ProgrammingError: more than one row returned by a
subquery
used as an expression
-------------------------------------+-------------------------------------
Reporter: Antonio Terceiro | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 3.2
(models, ORM) |
Severity: Normal | Resolution: needsinfo
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 Simon Charette):
* cc: Simon Charette (added)
* status: new => closed
* resolution: => needsinfo
Comment:
The issue seems related an attempt at doing a `GROUP BY` by a subquery
that returns more than one row. See the `GROUP BY V0."hostname", (SELECT
U0."name" FROM "lava_scheduler_app_devicetype" ...)` part.
The `Q(actual_device__isnull=False, actual_device__in=accessible_devices)`
lookup in `RestrictedTestJobQuerySet.accessible_by_user` is causing that
somehow, and I assume `Device.objects.accessible_by_user` is the culprit
as it must do a subquery annotation somehow that is not limited to one
row.
By giving a cursory look at your code base I couldn't identify the origin
of the subquery annotation so I'll close with ''needsinfo'' for now but
please re-open if you can create a minimal test case as I'll be monitoring
this issue.
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Ticket URL: <https://code.djangoproject.com/ticket/33282#comment:3>
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