SQL Query Tuning with DB Console provides insights into using CockroachDB's DB Console for optimizing SQL performance. The blog post highlights the importance of observability in understanding and improving database performance, particularly through tools like the ccloud CLI and DB Console, which offer metrics on SQL statements and transactions. The DB Console includes features such as the Metrics, SQL Activity, Statements, and Transactions pages, which allow users to monitor latency, contention, execution statistics, and more. By identifying problematic periods or statements through these metrics, users can take actionable steps to enhance performance. Additionally, the post emphasizes using features like statement fingerprints, transaction fingerprints, and Explain Plans to diagnose issues. The ongoing development of new features, such as a dedicated insights page, aims to further aid users in resolving performance issues. Marylia Gutierrez, the author, brings her expertise in SQL observability to guide users in leveraging these tools effectively.