diff options
| author | Guillaume Pannatier <guillaume.pannatier@gmail.com> | 2014-05-29 08:53:25 +0200 |
|---|---|---|
| committer | Tim Graham <timograham@gmail.com> | 2014-05-30 08:05:43 -0400 |
| commit | b266392b638c188daf3621e7f919cc12d65a4e2a (patch) | |
| tree | 41a473ab76fcd2c2de2755de22927bde01fa374d /docs | |
| parent | 16d037c4f06104670b88989daa76b05a2f10fd85 (diff) | |
[1.7.x] Fixed #22710 -- Documented aggregation behavior for empty QuerySets.
Thanks matklad for the report.
Backport of 7c6e96ec1f from master
Diffstat (limited to 'docs')
| -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 ~~~ |