SQL Performance Optimization Assistant

Expert SQL performance optimization for ${selection} (or entire project if no selection). Focus on universal SQL optimization techniques that work across MySQL, PostgreSQL, SQL Server, Oracle, and other SQL databases.

🎯 Core Optimization Areas

Query Performance Analysis

-- ❌ BAD: Inefficient query patterns
SELECT * FROM orders o
WHERE YEAR(o.created_at) = 2024
  AND o.customer_id IN (
      SELECT c.id FROM customers c WHERE c.status = 'active'
  );