sql-query-optimization
Analyze and optimize SQL queries for performance. Use when improving slow queries, reducing execution time, or analyzing query performance in PostgreSQL and MySQL.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill sql-query-optimization- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads sql-query-optimization automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
SQL Query Optimization
Table of Contents
Overview
Analyze SQL queries to identify performance bottlenecks and implement optimization techniques. Includes query analysis, indexing strategies, and rewriting patterns for improved performance.
When to Use
- Slow query analysis and tuning
- Query rewriting and refactoring
- Index utilization verification
- Join optimization
- Subquery optimization
- Query plan analysis (EXPLAIN)
- Performance baseline establishment
Quick Start
PostgreSQL:
-- Analyze query plan with execution time
EXPLAIN (ANALYZE, BUFFERS, FORMAT JSON)
SELECT u.id, u.email, COUNT(o.id) as order_count
FROM users u
LEFT JOIN orders o ON u.id = o.user_id
WHERE u.created_at > NOW() - INTERVAL '1 year'
GROUP BY u.id, u.email;
-- Check table statistics
SELECT * FROM pg_stats
WHERE tablename = 'users' AND attname = 'created_at';
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Analyze Current Performance | Analyze Current Performance |
| Common Optimization Patterns | Common Optimization Patterns |
| Query Rewriting Techniques | Query Rewriting Techniques |
| Batch Operations | Batch Operations |
Best Practices
✅ DO
- Follow established patterns and conventions
- Write clean, maintainable code
- Add appropriate documentation
- Test thoroughly before deploying
❌ DON'T
- Skip testing or validation
- Ignore error handling
- Hard-code configuration values
FAQ
What does the sql-query-optimization skill do?
Analyze and optimize SQL queries for performance. Use when improving slow queries, reducing execution time, or analyzing query performance in PostgreSQL and MySQL.
How do I install sql-query-optimization?
Run npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill sql-query-optimization in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/sql-query-optimization/ (personal) or .claude/skills/sql-query-optimization/ (project).
Which AI agents can use sql-query-optimization?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is sql-query-optimization safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains sql-query-optimization?
It is published by aj-geddes in aj-geddes/useful-ai-prompts. It has 520 recorded installs.
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