parameters:
  operation:
    type: string
    required: true
    enum: [install, configure, use]
  extension:
    type: string
    enum: [pg_stat_statements, pg_trgm, uuid_ossp, hstore, postgis]

CREATE EXTENSION IF NOT EXISTS pg_stat_statements;
CREATE EXTENSION IF NOT EXISTS pg_trgm;
CREATE EXTENSION IF NOT EXISTS uuid_ossp;
CREATE EXTENSION IF NOT EXISTS hstore;

-- Check installed
SELECT extname, extversion FROM pg_extension;

-- Top queries
SELECT query, calls, mean_exec_time
FROM pg_stat_statements
ORDER BY total_exec_time DESC LIMIT 10;

-- Reset stats
SELECT pg_stat_statements_reset();

-- Similarity search
SELECT name, similarity(name, 'postgresql') as sim
FROM products WHERE name % 'postgresql';

-- Create trigram index
CREATE INDEX idx_trgm ON products USING GIN (name gin_trgm_ops);

SELECT uuid_generate_v4();

SELECT 'key=>value'::hstore;
SELECT data->'key' FROM table_with_hstore;

Skill("postgresql-extensions")