Hi everyone, here again to look for some advice and wise suggestions.
I am facing a situation that I thought I have already covered, but during the testing phase (with real data) was not the case. So I have the relationship between entities that you can see in the diagram below. I have started using the next hierarchy: Base ->Page->(Tag and Product)-> (TravelPass and Travel) -> (Event, Privatebooking) In each one of this extends I have used the 'polymorphic_on' to work with a Joined Inheritance format. So reading more carefully the docs I realized that this is not possible and in deed I had problems when querying the TravelPass entity getting the results of the Travel entity. So right now I am looking for alternatives to implement this but I am a bit lost. I think the single table format will not solve it. I am thinking about using regular relationships for making it works, but so far no great ideas come to my mind. I would like to ask for your advice in this topic. Thanks in advance. [image: Screenshot 2019-08-22 at 15.16.39.png] <about:invalid#zClosurez> -- 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/6f4e8932-0497-4289-a544-7d6e277e9085%40googlegroups.com.