Oguzhan Kuruçabey enhanced the goravel/framework repository by extending its Go-based ORM framework with new aggregate functions in the database query builder. He implemented Avg, Min, and Max operations by updating interfaces in both the db and orm layers and providing concrete implementations in the core query packages. His work included comprehensive cross-driver testing to ensure consistent behavior across supported databases. Using Go, SQL, and ORM techniques, Oguzhan focused on improving query expressiveness and reliability. The depth of his contribution is reflected in the careful interface design, robust implementation, and thorough test coverage, addressing a key need for aggregate queries.