hey there -
in addition to the querying strategies I emailed to you privately, the latest trunk also has a new operator "of_type" which allows this pattern (as a review, Person joins to Role via the "roles" relation, Employee is a subclass of Role): session .query (Person ).filter (Person .roles.of_type(Employee).any(and_(Role.type=='ResearchAssociate', Employee.visible==True))).all() of_type(class_or_mapper) will cause the any() and has() operators to join to the subclass' mapped table instead of the base class of the relation(). It also works with join(): session .query (Person ).join (Person .roles.of_type(Employee)).filter(and_(Role.type=='ResearchAssociate', Employee.visible==True)).all() --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
