#10929: Support a default value for Sum (and possibly other aggregation
functions)
-------------------------------------+-------------------------------------
Reporter: nolan | Owner:
Type: New feature | Status: new
Component: Database layer | Version: master
(models, ORM) | Resolution:
Severity: Normal | Triage Stage: Accepted
Keywords: aggregate annotate | Needs documentation: 1
default | Patch needs improvement: 0
Has patch: 1 | UI/UX: 0
Needs tests: 0 |
Easy pickings: 0 |
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Comment (by jarshwah):
@mrmachine that's not a bad argument to make. What we could support is:
{{{
Sum('field', default=0)
}}}
Which would then be returned from {{{ convert_value }}} in the case where
the value is None. The argument against that is we'd be special-casing the
Sum aggregate, while leaving other aggregates to use the Coalesce method.
That's not such a big downside though.
Does anyone else want to weigh in on this? Supporting a default=0 kwarg is
a 4 line + docs change.
--
Ticket URL: <https://code.djangoproject.com/ticket/10929#comment:12>
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