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Diffstat (limited to 'docs/ref')
| -rw-r--r-- | docs/ref/models/querysets.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index 333c0054c6..583d313b5b 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -2291,6 +2291,9 @@ retrieving model instances from it (for example, by iterating over it), it's probably more efficient to use ``len(queryset)`` which won't cause an extra database query like ``count()`` would. +If the queryset has already been fully retrieved, ``count()`` will use that +length rather than perform an extra database query. + ``in_bulk()`` ~~~~~~~~~~~~~ |