Individual skill
query-expert
Master SQL and database queries across multiple systems. Generate optimized queries, analyze performance, design indexes, and troubleshoot slow queries for PostgreSQL, MySQL, MongoDB, and more.
skills/query-expert/SKILL.md
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- Repository last updated
- Jan 14, 2026
- License
- MIT
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- data Derived category
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- data-databases Derived category
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SKILL.mdcore · 17,227 bytesreferences/indexing.mddoc · 238 bytesreferences/nosql_queries.mddoc · 191 bytesreferences/optimization.mddoc · 255 bytesreferences/sql_patterns.mddoc · 229 bytesscripts/analyze_performance.shruns · 6,467 bytesscripts/generate_query.shruns · 10,417 bytesscripts/optimize_query.shruns · 6,331 bytes
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# 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
