Using PugSQL and FastAPI

PugSQL is presented as an alternative to using SQLAlchemy directly in FastAPI applications for developers who prefer raw SQL over an ORM. It lets developers store named SQL queries in separate files, define their parameters and return types, and invoke them as Python functions after connecting the module to a database. In a FastAPI URL-shortening example, a route retrieves a URL by slug through a PugSQL query and returns either a redirect or a 404 error. This approach emphasizes separation of concerns by keeping application logic, SQL operations, and database testing distinct, while allowing query functions to be mocked and independently verified through integration tests.

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