Optimize SQL queries and indexes

database-optimizerskillsetup L29,726
Jeffallan/claude-skills
What it does

Analyze and optimize database queries and indexes

Best for

Diagnosing 100+ ms query latency when generic optimization doesn't pinpoint the bottleneck.

Inputs
  • · EXPLAIN ANALYZE output
  • · slow query logs
  • · schema
Outputs
  • · query execution plan
  • · index recommendations
  • · timing metrics
Requires
  • · PostgreSQL
  • · MySQL
  • · pg_stat_statements
Preconditions
  • · Access to EXPLAIN ANALYZE
  • · production baseline metrics
Failure modes
  • · Index overhead on writes
  • · incorrect statistics
  • · replication lag
Trust signals
  • · EXPLAIN BUFFERS analysis pattern
  • · before/after validation
  • · real execution plan examples