I am getting the following error: SAWarning: Implicitly combining column Node.node_id with column Name.node_id under attribute 'node_id'. Please configure one or more attributes for these same-named columns explicitly.
In my case I am using poymorphic classes by joining with the ORM. Node is the base of the hierarchy (derived from declarative_base), then I have a class Property derived from it, and a class Name derived from Property. Each class has a primary_key named node_id, with a foreign key constraint one step done the hierarchy. I have also tried making all the Foreign key constraints point to Node.node_id and it doesn't make a difference. It is just a warning, and the lookup does seem to make the double join, so it doesn't seem to be a big problem, but it seems it want me to configure something for these, but I am not sure what. Two level inheritance is working just fine, it is just where it hits the 3rd level that it seems to want something explicit. -- Richard Damon -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/8fa8e94d-cc6f-5bf5-efeb-dbdbae0d7663%40Damon-Family.org.
