Sqlalchemy Orm Expert

If you're building customer support systems with SQLAlchemy 2.0+, this covers the patterns you actually need: proper model relationships for tickets, users, and comments with modern type hints, session management that won't leak connections, and async operations with FastAPI. The examples show realistic support domain models with soft deletes, audit timestamps, and many-to-many tags through association tables. It's opinionated toward PostgreSQL and includes query optimization and bulk operations for data curation tasks. The approach is straightforward declarative mapping, not clever metaprogramming, which makes sense when your team needs to maintain this stuff long term.