Individual skill
database-optimization
Query optimization, indexing strategies, and database performance tuning for PostgreSQL and MySQL
skills/database-optimization/SKILL.md
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# Database Optimization
## EXPLAIN Analysis
Always run `EXPLAIN ANALYZE` before optimizing. Read the output bottom-up.
```sql
-- PostgreSQL
EXPLAIN (ANALYZE, BUFFERS, FORMAT TEXT) SELECT ...;
-- MySQL
EXPLAIN ANALYZE SELECT ...;
```
