On Jul 4, 2011, at 12:47 PM, Michael Tils wrote: > Hello, > > thanks for your help. > > The joins Building.condition and Building.care_level are pointing the same > table. The table is a single-inheritance construct. > > The query: > > session.query(Building).join(rating, Building.condition).join(care_level, > Building.care_level) > > produces this error: > > sqlalchemy.exc.ArgumentError: Can't determine join between 'building' and > '%(34604496 lookup)s'; tables have more than one foreign key constraint > relationship between them. Please specify the 'onclause' of this join > explicitly. > > This error can be fixed via string property names: > > session.query(Building).join('care_level').join('rating') > > This works, but with this method i have no alias names.
that doesn't sound right, can you provide mappings please > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sqlalchemy/-/Z-JEIbJEInkJ. > 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. -- 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.