diff options
Diffstat (limited to 'docs/ref')
| -rw-r--r-- | docs/ref/models/querysets.txt | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index 3dc66f631a..d2cbc63203 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -2802,12 +2802,19 @@ by the aggregate. Avg ~~~ -.. class:: Avg(expression, output_field=None, **extra) +.. class:: Avg(expression, output_field=FloatField(), **extra) - Returns the mean value of the given expression, which must be numeric. + Returns the mean value of the given expression, which must be numeric + unless you specify a different ``output_field``. * Default alias: ``<field>__avg`` - * Return type: ``float`` + * Return type: ``float`` (or the type of whatever ``output_field`` is + specified) + + .. versionchanged:: 1.9 + + The ``output_field`` parameter was added to allow aggregating over + non-numeric columns, such as ``DurationField``. Count ~~~~~ |