A tutorial from Rust Magazine demonstrating how to build a SQL optimizer in under 1000 lines of Rust using the Egg framework, which applies Equality Saturation to efficiently explore equivalent expression forms. The optimizer covers classic techniques including expression simplification, constant folding, predicate pushdown, column pruning, join reordering, and cost-based optimization, and is capable of handling real TPC-H queries.
Background
The project is part of the RisingLight educational database system and published as sql-optimizer-labs on GitHub, aimed at helping beginners understand SQL optimizer internals through hands-on implementation.
- Source
- Lobsters
- Published
- Aug 14, 2026 at 03:00 AM
- Score
- 6.0 / 10