Advanced SQL Query Optimization is a databases product available on the Whop marketplace, created by raselyweinzierl and launched in May 2026.

A comprehensive, hands-on course for developers who are tired of slow queries killing their apps. You'll learn execution plan analysis, index strategy, join optimization, subquery refactoring, partitioning, and real-world performance tuning patterns used in production Node.js backends. This isn't theory — every module is built around real query problems from production systems. You'll diagnose bottlenecks, rewrite queries, benchmark results, and build the instincts to write performant SQL from the start. **What you'll master:** • Reading and interpreting EXPLAIN / EXPLAIN ANALYZE output • Composite index design and covering indexes • JOIN strategies: nested loop vs hash vs merge • Subquery elimination and CTE optimization • Window functions for complex analytics without performance cost • Connection pooling and query caching in Node.js • Partitioning and sharding strategies for scale • Locking, deadlocks, and transaction isolation tuning **Who this is for:** Backend developers, full-stack engineers, and DBAs who work with PostgreSQL, MySQL, or SQL Server and need to move beyond "it works" to "it's fast."

Advanced SQL Query Optimization has is priced at $223/week.

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