https://blog.rafaelfernandez.dev/tags/sql/ Recent content in Sql on Home Hugo -- gohugo.io en © 2026 Rafael Fernandez Mon, 23 Mar 2026 00:00:00 +0000 https://blog.rafaelfernandez.dev/posts/how-query-engines-work-1-from-sql-to-results/ Mon, 23 Mar 2026 00:00:00 +0000 https://blog.rafaelfernandez.dev/posts/how-query-engines-work-1-from-sql-to-results/ You write a SQL query, hit enter, and a few milliseconds later results appear. In between, a small compiler has already parsed your text, built a plan, optimized it, and executed it. This post walks through that pipeline with a real query and real Rust code using DataFusion.