#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 |
-------------------------------------+-------------------------------------
Comment (by jarshwah):
I would support closing this as a duplicate of #23753. Once the linked
ticket is implemented, it'll be possible for users to construct their own
coalesce value like:
{{{
annotate(sum_field = Coalesce(Sum(...), 0))
}}}
This leaves the default behaviour alone, but provides a higher level of
customisation. It relies on the #14030 patch which will also allow adding
a "start" value, as mentioned by @lukeplant above:
{{{
annotate(sum_field = Coalesce(Sum(...), 0) + Value(5))
}}}
Would everyone be happy enough with the above use?
--
Ticket URL: <https://code.djangoproject.com/ticket/10929#comment:10>
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