如何为SQL使用sqlalchemy？

Question

select category_id, (select category.name from category where category.id = category_id ) as category_name from ( select distinct category_id as category_id from model join category on ( category.id = model.category_id) ) as R

... self.current_session.query(Model.category_id).join(Category).distinct()

But how to know category_name ?

Answer 1

for model, category in self.current_session.query(Model, Category).join(Category).distinct():
    print model.category_id, category.name