PUBLIC MARKS with tag "aggregate functions"

Serie of 3 posts on MongoDB aggregation. The group() function is awesomely powerful.

With the 1.1 release of Django came several major new features, prominent among these is aggregation, which was among the most oft-requested for Django's ORM. The addition and manner of implementation of this feature highlights several fundamental philosophies within Django, as well as provides new possibilities. Fundamentally aggregates support in Django means a way to answer queries such as "show me all the authors who have published more than 1 book" or "show me the most expensive book".