Worked on the cube-js/cube repository to implement support for the pg_catalog.pg_collation table within the cubesql PostgreSQL compatibility layer. This involved designing a new provider and builder in Rust, populating essential collation data, and developing comprehensive tests to ensure correct table functionality. The addition of pg_collation expanded the compatibility layer, allowing PostgreSQL-based deployments to integrate more seamlessly and reducing the risk of integration issues. The work required a strong understanding of database internals, PostgreSQL system catalogs, and SQL querying, resulting in a feature that broadens adoption potential for PostgreSQL users relying on cubesql’s compatibility features.