Query Expert Master database queries across SQL and NoSQL systems. Generate optimized queries, analyze performance with EXPLAIN plans, design effective indexes, and troubleshoot slow queries. What This Skill Does Helps you write efficient, performant database queries: - Generate Queries - SQL, MongoDB, GraphQL queries - Optimize Queries - Performance tuning and refactoring - Design Indexes - Index strategies for faster queries - Analyze Performance - EXPLAIN plans and query analysis - Troubleshoot - Debug slow queries and bottlenecks - Best Practices - Query patterns and anti-patterns Support…