Hi, if you have a std:
class Director(Base): name = ... movies = relationship(Movie...) you can do something as:: session.query(Director).filter_by(movies=None) that is nicely translated into:: SELECT director.id AS director_id, director.last_name AS director_last_name, director.first_name AS director_first_name, director.nation AS director_nation FROM director WHERE NOT (EXISTS (SELECT 1 FROM movie WHERE director.id = movie.director_id)) How can I nagate it, i.e. If I want all records that *do* have movies? TIA sandro *:-) -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.