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[1.6.x] Fixed #22710 -- Amended aggregation note for empty QuerySets
Thanks smeaton for report and Joël Rochat for spell check
Backport of 7f27cca5c5
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@ -2489,9 +2489,10 @@ aggregate functions, see
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.. admonition:: Note
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Aggregation functions will return ``None`` when used with an empty
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``QuerySet``. For example, the ``Count`` aggregation function will return
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``None`` instead of ``0`` if the ``QuerySet`` contains no entries.
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Aggregation functions return ``None`` when used with an empty
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``QuerySet``. For example, the ``Sum`` aggregation function returns ``None``
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instead of ``0`` if the ``QuerySet`` contains no entries. An exception is
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``Count``, which does return ``0`` if the ``QuerySet`` is empty.
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Avg
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~~~
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