sql-query-optimization

SKILL.md

Analyze SQL queries to identify performance bottlenecks and implement optimization techniques. Includes query analysis, indexing strategies, and rewriting patterns for improved performance.

❌ Don't create indexes without testing impact ❌ Don't use LIKE with leading wildcard without full-text search ❌ Don't JOIN unnecessary tables ❌ Don't ignore ORDER BY performance impact ❌ Don't skip EXPLAIN analysis

✅ DO test query changes in development first ✅ DO monitor query performance after deployment ✅ DO update table statistics regularly ✅ DO use appropriate data types for columns ✅ DO consider materialized views for complex aggregations

SQL クエリを分析してパフォーマンスを最適化します。 PostgreSQL や MySQL で遅いクエリを改善したり、実行時間を短縮したり、クエリのパフォーマンスを分析したりする場合に使用します。 ソース: aj-geddes/useful-ai-prompts。

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