Developed a server-side vector dimension function for the GreptimeTeam/greptimedb repository, expanding the platform’s vector data analytics capabilities. The work centered on implementing vec_dim in Rust, a SQL-accessible function that computes the dimension of vectors represented as strings, thereby reducing the need for client-side data processing. Comprehensive unit tests and SQL test cases were created to ensure correctness across various vector formats, reflecting a focus on reliability and maintainability. This feature aligns with GreptimeDB’s roadmap for advanced vector operations, leveraging skills in Rust, SQL, and database function design to pave the way for broader vector data manipulation features.