Worked on the apache/dolphinscheduler repository to enhance the reliability of database schema upgrades, focusing on the 3.2.0 release path. Addressed a SQL delimiter syntax error in the dolphinscheduler_dml.sql script, which had previously caused upgrade failures and increased downtime risk during deployments. The solution involved careful analysis and correction of SQL script structure, ensuring that upgrade scripts execute smoothly and consistently. Leveraged expertise in SQL and database management to resolve the issue, contributing a targeted bug fix rather than new features. This work improved upgrade stability for users, supporting more dependable schema deployment and reducing operational interruptions for the project.