This article explains the optimization rules in DuckDB, focusing on how its advanced optimizer enhances query performance. It details the optimizer's structure, core functions, and how to implement custom optimization rules. A brief overview of 26 built-in optimization rules is also provided.

Sirius is a GPU-native SQL engine that integrates with existing databases like DuckDB using the Substrait query format, achieving approximately 10x speedup over CPU query engines for TPC-H workloads. It is designed for interactive analytics and supports various AWS EC2 instances, with detailed setup instructions for installation and performance testing. Sirius is currently in active development, with plans for additional features and support for more database systems.