SQLalchemy Cheat Sheet
Common Filter Operators: http://manuelmax.tumblr.com/post/289720781/common-filter-operators-sqlalchemy
Common relationships: https://docs.sqlalchemy.org/en/20/orm/basic_relationships.html
If you’re using Flask-SQLalchemy, their documentation is an awesome quick summary of how to use SQLalchemy: https://flask-sqlalchemy.readthedocs.io/