SQLAlchemy is the Python SQL toolkit and ORM: tables are declared as typed Python classes and queried with select() statements on sync or asyncio engines. Use when a user asks to set up a Python ORM, define database models, write async database queries, fix MissingGreenlet or N+1 problems, manage migrations with Alembic, upgrade to SQLAlchemy 2.1, or choose between SQLAlchemy and Django ORM.
