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Guide for optimizing SQL queries with EXPLAIN ANALYZE, index tuning, N+1 detection, covering indexes, and query plan analysis. Use when the user has slow database queries, asks about query performance, needs to interpret EXPLAIN output, or wants to eliminate N+1 queries. Trigger whenever query performance, slow queries, or database optimization is discussed.
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Query Optimization
Diagnose and fix slow SQL queries using EXPLAIN ANALYZE, proper indexing, query rewriting, and N+1 detection.
When to Use
User reports slow database queries User asks about EXPLAIN ANALYZE output User needs to optimize query performance User has N+1 query problems in an ORM User asks about index tuning or covering indexes
Core Patterns
EXPLAIN ANALYZE
Always start with EXPLAIN ANALYZE to understand what the database is actually doing.
-- Basi
[Description truncada. Veja o README completo no GitHub.]
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