#34975: Getting refs does not work properly with models.Window and aggregation
-------------------------------------+-------------------------------------
Reporter: Sergey Nesterenko | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Normal | Resolution:
Keywords: QuerySet, Window, | Triage Stage: Accepted
Aggregate, F |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Simon Charette):
I'm not sure if something else will break as I don't think we have
extensive testing for performing filtered aggregation over a window
function but does the following patch helps
{{{#!python
diff --git a/django/db/models/expressions.py
b/django/db/models/expressions.py
index 3a0c75ebf2..74ae9cab8e 100644
--- a/django/db/models/expressions.py
+++ b/django/db/models/expressions.py
@@ -417,6 +417,8 @@ def replace_expressions(self, replacements):
def get_refs(self):
refs = set()
for expr in self.get_source_expressions():
+ if expr is None:
+ continue
refs |= expr.get_refs()
return refs
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/34975#comment:4>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/0107018bde7cf397-96dc58b4-79f8-4866-8187-88aa874816d4-000000%40eu-central-1.amazonses.com.
