May marks five years since Dolt adopted go-mysql-server. Today we summarize the current state of GMS by walking through a query's journey from parsing to result spooling. Overview SQL engines are the logical layer of a database that sit between client and storage. To mutate the database state on behalf of a client, a SQL engine performs the following steps: Parsing Binding Plan Simplification Join Exploration Plan Costing Execution Spooling Results Most systems also have a variety of execution s...