In November 2025, Carr enhanced the PRQL/prql repository by implementing a new text.contains function for the SQL Redshift backend, enabling more robust string search capabilities in analytics queries. Using Rust and SQL, Carr developed the translation logic to emit Redshift-compatible SQL for the new function and ensured its correctness through comprehensive integration testing. The work included updating the backend to utilize the new function in generated queries and addressing issue #5549 to guarantee proper support in the sql.redshift target. This focused contribution demonstrated depth in backend feature development and careful attention to regression prevention through expanded test coverage and validation.