Worked on the sogis/gretljobs repository to enhance data quality for drainage material records by addressing a recurring typo in material names within SQL scripts and views. Focused on standardizing the spelling of 'Kunststoff' across datasets such as alw_drainagen and views like vsadssmini_wk_mangel_leitung, the work improved the accuracy of material categorization and reporting. Applied SQL development and database management skills to implement the fix through three low-risk, traceable commits, ensuring version control best practices. This targeted bug fix reduced misclassifications in reporting and analytics, supporting more reliable business decisions based on consistent drainage material data.