During September 2025, Giang Nguyen developed support for the pg_catalog.pg_collation table within the cubesql PostgreSQL compatibility layer in the cube-js/cube repository. This work involved designing a new provider and builder in Rust to populate essential collation data, ensuring accurate representation of PostgreSQL’s collation metadata. Giang also implemented comprehensive tests using SQL to verify the new table’s functionality and integration. By expanding PostgreSQL compatibility in cubesql, this feature reduced integration risk and enabled broader adoption for PostgreSQL-based deployments. The project demonstrated a solid understanding of database internals and careful attention to compatibility requirements, delivering a well-scoped, production-ready feature.