March 2026 focused on correctness and performance of DataFusion statistics propagation. Implemented a targeted fix in FilterExec to preserve Absent statistics for NULL interval bounds, added regression coverage, and ensured dynamic filter pushdown remains effective for Parquet row-group pruning. The change improves query planning reliability, reduces incorrect disjoint-input assumptions, and preserves performance gains for analytics workloads relying on statistics propagation.

2025-04 monthly summary for dbt-labs/arrow-adbc: Delivered the PostgreSQL ADBC driver enhancement to support keyword args for connect (db_kwargs for low-level connect; conn_kwargs for DBAPI connect) with accompanying tests to verify connection-level options (e.g., schema) via conn_kwargs. Implemented a targeted fix to handle kwargs in dbapi connect (#2700). These changes improve configurability, compatibility, and reliability of database connections, enabling smoother integration with analytics pipelines and reducing manual configuration overhead. Demonstrated proficiency in Python, ADBC, PostgreSQL, testing, and code quality improvements.