Thomas Drake wrote: > > primary = dep_groups.join(dep_group_components, > > dep_groups.c.group_id==dep_group_components.c.group_id).join > (dependencies_table, > > dep_group_components.c.group_id==dependencies_table.c.parent_id) > secondary = dep_groups.join(dep_group_components, > > dep_groups.c.group_id==dep_group_components.c.group_id).join > (dependencies_table, > > dep_group_components.c.group_id==dependencies_table.c.child_id)
why is all the above join construction needed ? I see three classes but only two mappers. So I get the impression you're trying to say Component -> DependencyHolderGroup -> Group ? in which case map all three classes explicitly, and two relation()s to bridge them together. Also I'd advise upgrading to 0.5.6 as there are many bug fixes since 0.5.3 including within the area of joined table inheritance mapping. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
