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

Analysez et optimisez les requêtes SQL pour les performances. À utiliser pour améliorer les requêtes lentes, réduire le temps d'exécution ou analyser les performances des requêtes dans PostgreSQL et MySQL. Source : aj-geddes/useful-ai-prompts.

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