Fixed #14030 -- Allowed annotations to accept all expressions

1 files changed, 5 insertions, 0 deletions

diff --git a/docs/topics/db/aggregation.txt b/docs/topics/db/aggregation.txt
index 436256483d..175cc21782 100644
--- a/docs/topics/db/aggregation.txt
+++ b/docs/topics/db/aggregation.txt
@@ -67,6 +67,11 @@ In a hurry? Here's how to do common aggregate queries, assuming the models above
     >>> Book.objects.all().aggregate(Max('price'))
     {'price__max': Decimal('81.20')}
 
+    # Cost per page
+    >>> Book.objects.all().aggregate(
+    ...    price_per_page=Sum(F('price')/F('pages'), output_field=FloatField()))
+    {'price_per_page': 0.4470664529184653}
+
     # All the following queries involve traversing the Book<->Publisher
     # many-to-many relationship backward