`The PostgreSQL table function can be used to create user-defined functions that compute values that can then be used as an in list in a subquery. This allows for more flexibility and power when generating reports or performing other complex queries. The use cases presented include: 1) creating a parameterized view, 2) pretty-printed ad-hoc reports for administrators, 3) dynamic IN lists, and 4) compact syntax for bulk insert. These examples demonstrate the capabilities of PostgreSQL table functions in various scenarios, showcasing their potential to simplify code and improve performance.