Worked on the prisma/prisma repository to enhance PostgreSQL error handling by addressing the extraction of column names from ColumnNotFound errors in the adapter-pg. Focused on improving the reliability of error reporting for both quoted and unquoted identifiers, the work involved refining error normalization logic and expanding test coverage to include multi-schema setups and compatibility with Postgres v18.3. Utilized TypeScript for backend development, emphasizing robust error handling and comprehensive testing. These changes reduced ambiguity in error messages, streamlined debugging for developers, and strengthened the overall reliability of the system in complex PostgreSQL environments without introducing new features during the period.