#31251: Unable to annotate a query that has an OuterRef already
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Reporter: OJFord | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 3.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: db,outerref,group | Triage Stage:
by,subquery,annotate | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by OJFord):
Perhaps I was doing something silly in the first place; I've resolved my
issue by changing the subquery to first annotate (group by) all the
`type`s, whatever they are, not `OuterRef`, and then only after the `Min`
annotation `filter`ing on the `OuterRef("type")` matching the grouped by
type.
I'll leave this open for now though in case it's desired to improve the
error message in this case, or perhaps there's a more sensibly-intentioned
query that does produce the same error.
--
Ticket URL: <https://code.djangoproject.com/ticket/31251#comment:1>
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