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[4.0.x] Fixed #33391 -- Clarified Aggregate.empty_result_set_value docs. 

Backport of 4400d8568a from main
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Mariusz Felisiak 2021-12-31 06:49:10 +01:00
parent b93fb3d6be
commit fe59bf202d
1 changed files with 2 additions and 3 deletions
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docs/ref/models/expressions.txt
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@ -422,9 +422,8 @@ The ``Aggregate`` API is as follows:
.. versionadded:: 4.0
Override :attr:`~django.db.models.Expression.empty_result_set_value` to
``None`` since most aggregate functions result in ``NULL`` when applied
to an empty result set.
Defaults to ``None`` since most aggregate functions result in ``NULL``
when applied to an empty result set.
The ``expressions`` positional arguments can include expressions, transforms of
the model field, or the names of model fields. They will be converted to a