https://docs.sqlalchemy.org/en/14/orm/queryguide.html#joins
ORM Querying Guide — SQLAlchemy 1.4 Documentation
The select() construct accepts ORM entities, including mapped classes as well as class-level attributes representing mapped columns, which are converted into ORM-annotated FromClause and ColumnElement elements at construction time. A Select object that con
docs.sqlalchemy.org
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