I have a simple SqlAlchemy Relationship defined as follows

Following the polymorphic inheritance setup given by sqlalchemy docs here, how do I add a query function to the company table that returns its managers’ names?

Am a beginner in web development.

Are there any significant differences (performance, or otherwise) between the following two ways of getting a list of results?

I’m trying to automatically fill in created_at and updated_at for my database records.

I’m trying to automatically fill in created_at and updated_at for my database records. Here is my base class

I have 2 tables with a many-to-many relationship, so I have a join table between them. They are defined like this

I want to share some class level attributes among different declarative base classes in SQLAlchemy, such as type_annotation_map.

I’m having a problem resolving a circular dependency between two tables. Have followed all the information I found, but it still doesn’t quite work.

This page, https://docs.sqlalchemy.org/en/20/orm/declarative_tables.html#declarative-table-with-mapped-column, desribes two different ways of using Declarative Mapping