jeechu

SELECT
  current_database(), schemaname, tablename, /*reltuples::bigint, relpages::bigint, otta,*/
  round(avg((CASE WHEN otta=0 THEN 0.0 ELSE sml.relpages::float/otta END)::numeric),1) AS tbloat,
  round(avg(CASE WHEN relpages < otta THEN 0 ELSE bs*(sml.relpages-otta)::BIGINT END), 0) AS wastedbytes
FROM (
  SELECT
    schemaname, tablename, cc.reltuples, cc.relpages, bs,
    CEIL((cc.reltuples*((datahdr+ma-
      (CASE WHEN datahdr%ma=0 THEN ma ELSE datahdr%ma END))+nullhdr2+4))/(bs-20::float)) AS otta,
    COALESCE(c2.relname,'?') AS iname, COALESCE(c2.reltuples,0) AS ituples, COALESCE(c2.relpages,0) AS ipages,