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Fixed #14030 -- Allowed annotations to accept all expressions

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Josh Smeaton 2013-12-26 00:13:18 +11:00 • committed by Marc Tamlyn
parent 39e3ef88c2
commit f59fd15c49
43 changed files with 2572 additions and 801 deletions
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5
docs/topics/db/aggregation.txt
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@ -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