mattsoldo

-- Index hit rate
WITH idx_hit_rate as (
SELECT 
  relname as table_name, 
  n_live_tup,
  round(100.0 * idx_scan / (seq_scan + idx_scan),2) as idx_hit_rate
FROM pg_stat_user_tables
ORDER BY n_live_tup DESC
),

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'