Worked on the apache/incubator-wayang project to enhance the correctness and reliability of SQL query generation. Focused on addressing a specific issue where JOIN clauses did not consistently reference the correct table, which could lead to inaccurate query results across various workloads. Delivered a targeted bug fix using Java and SQL, applying a single-responsibility change that improved the accuracy of generated queries. Emphasized low-risk, maintainable code by isolating the fix to the relevant logic in the codebase. Demonstrated skills in Java programming, SQL query optimization, and database management while contributing to the overall robustness of SQL generation in the repository.