SELECT relname,cast(heap_blks_hit as numeric) / (heap_blks_hit + heap_blks_read) AS hit_pct,heap_blks_hit,heap_blks_read FROM pg_statio_user_tables
WHERE (heap_blks_hit + heap_blks_read)>0 ORDER BY hit_pct;
SELECT indexrelname,cast(idx_blks_hit as numeric) / (idx_blks_hit + idx_blks_read) AS hit_pct,idx_blks_hit,idx_blks_read FROM pg_statio_user_indexes WHERE (idx_blks_hit + idx_blks_read)>0 ORDER BY hit_pct;
