How do I join three tables with SQLalchemy and keeping all of the columns in one of the tables?

Question

So, I have three tables:

The class defenitions:

engine = create_engine(\'sqlite://test.db\', echo=False)
SQLSession = sessionmaker(bind=engine)
Base = de         


        

Answer 1

Don't query from the user. Query from the Channel.

user = query(User).filter_by(id=1).one()
for channel in query(Channel).all():
    print channel.id, channel.title, user in channel.subscriptions.user

That way you get all the channels, not just the ones that are associated with the user in question.