Giang Blackk developed support for the pg_catalog.pg_collation table within the cubesql PostgreSQL compatibility layer in the cube-js/cube repository. Leveraging expertise in Rust and SQL, Giang designed and implemented a new provider and builder to populate essential collation data, ensuring the table accurately reflects PostgreSQL’s expected behavior. Comprehensive tests were added to verify the functionality and reliability of the new feature. This work deepened PostgreSQL compatibility for cubesql, reducing integration risk and enabling broader adoption in PostgreSQL-based environments. The project demonstrated a solid understanding of database internals and careful attention to compatibility requirements in a production context.