During November 2024, Yifan Wang developed end-to-end support for the RENAME DICTIONARY DDL statement in the databendlabs/databend repository. This work involved implementing API endpoints, backend logic, and abstract syntax tree support in Rust to enable safe renaming of dictionaries within the query system. Yifan ensured that the feature handled both existing and non-existent dictionaries with appropriate semantics, updating tests and documentation to reflect the new behavior. Leveraging skills in DDL, database internals, and SQL, Yifan’s focused contribution addressed a specific need in the system, delivering a robust and well-documented feature without introducing any regressions or bugs.