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Diffstat (limited to 'docs/ref/models/querysets.txt')
| -rw-r--r-- | docs/ref/models/querysets.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index 55d697ffcf..2cc05e6a67 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -2659,6 +2659,12 @@ aggregate functions, see aggregation on date/time fields in SQLite will raise ``NotImplementedError``. +.. admonition:: Note + + Aggregation functions will return ``None`` when used with an empty + ``QuerySet``. For example, the ``Count`` aggregation function will return + ``None`` instead of ``0`` if the ``QuerySet`` contains no entries. + Avg ~~~ |