Worked on the PRQL/prql repository to enhance the SQL Redshift backend by implementing a new text.contains function, enabling more robust string search capabilities in analytics queries. The development involved translating the new function into Redshift-compatible SQL and integrating it into the backend’s query generation process. Comprehensive integration testing was conducted using Rust and SQL to ensure correctness and prevent regressions, with expanded test coverage across various representative patterns. Additionally, a targeted fix addressed issue #5549 to guarantee proper support for text.contains in the sql.redshift target, resulting in a focused and well-tested feature addition during the month’s development cycle.