Brent Logan focused on enhancing data integrity within the LabKey/onprcEHRModules repository by addressing a targeted bug in treatment schedule calculations. He updated SQL queries and database join conditions to ensure treatments with NULL end dates were accurately included in patient timelines, resolving a gap that previously excluded these cases from reports. Using his expertise in SQL development and database management, Brent modified WHERE clauses across multiple SQL files to enforce robust NULL handling. This work improved the completeness of treatment data, strengthened downstream analytics, and supported compliance reporting by reducing edge-case data gaps in the system’s reporting layer.