If you are working with Django ORM most of the time and then switching to SQLAlchemy - you may face some unexpected behavior. In this post I’ll try to describe the most important differences from my point of view. All examples for SQLAlchemy will be shown in async code, in context of PostgreSQL. Django version - 4.2, SQLAlchemy version - 2.0. The full examples can be found here https://github.com/st4lk/sqlalchemy-vs-django-orm, in the article the code will be cutted to be short.