Avoid common querying mistakes with better Django models

Submitted By: Solrac
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This article sheds light on some of the lesser-known features of the Django ORM in particular, but SQLAlchemy users may find some of the cautions about inefficient query generation applicable to their own code. Learn how to avoid common querying mistakes, use model managers to encapsulate complex queries, and take advantage of the powerful new aggregation features available in Django V1.1

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