this is a good question. my experience with the django ORM is that in general it resolves any call to an ORM method into SQL and nothing else, but it is not gua

this is a good question. my experience with the django ORM is that in general it resolves any call to an ORM method into SQL and nothing else, but it is not guaranteed to generate the most optimal SQL. It is however, a somewhat common practice of django devs to to do some post-processing on a queryset in Python. totally acceptable for small querysets with complicated logic, but, yeah, obviously unacceptable for large performance critical queries.