Corrected typo in aggregation docs. Thanks to Ivan Sagalaev for the report.

    >>> Store.objects.aggregate(min_price=Min('books__price'), max_price=Min('books__price'))

Join chains can be as deep as you required. For example, to extract the

Join chains can be as deep as you require. For example, to extract the

age of the youngest author of any book available for sale, you could

issue the query::