During February 2026, Hao Huang enhanced column equivalence logic in the 514-labs/moosestack repository, focusing on schema diff reliability for ClickHouse databases. He implemented a feature in Rust to ignore differences between LowCardinality(String) and String types during column comparisons, reducing false positives in schema change detection. His approach involved updating core diffing and normalization components, expanding test coverage to include nested and JSON types, and refining CLI and external table change detection. By leveraging his expertise in Rust, database management, and testing, Hao delivered a robust solution that improved deployment safety and aligned diff semantics with ClickHouse’s type system.