/* Dead rows and whether an automatic vacuum is expected to be triggered */
WITH table_opts AS (
SELECT pg_class.oid, relname, nspname, array_to_string(reloptions, '') AS relopts FROM pg_class INNER JOIN pg_namespace ns ON relnamespace = ns.oid
), vacuum_settings AS (
SELECT oid, relname, nspname, CASE WHEN relopts LIKE '%autovacuum_vacuum_threshold%' THEN substring(relopts, '.*autovacuum_vacuum_threshold=([0-9.]+).*')::integer ELSE current_setting('autovacuum_vacuum_threshold')::integer END AS autovacuum_vacuum_threshold, CASE WHEN relopts LIKE '%autovacuum_vacuum_scale_factor%' THEN substring(relopts, '.*autovacuum_vacuum_scale_factor=([0-9.]+).*')::real ELSE current_setting('autovacuum_vacuum_scale_factor')::real END AS autovacuum_vacuum_scale_factor FROM table_opts
) SELECT
vacuum_settings.nspname AS schema, vacuum_settings.relname AS table, to_char(psut.last_vacuum, 'YYYY-MM-DD HH24:MI') AS last_vacuum, to_char(psut.last_autovacuum, 'YYYY-MM-DD HH24:MI') AS last_autovacuum, to_char(pg_class.reltuples, '9G999G999G999') AS rowcount, to_char(psut.n_dead_tup, '9G999G999G999') AS dead_rowcount, to_char(autovacuum_vacuum_threshold + (autovacuum_vacuum_scale_factor::numeric * pg_class.reltuples), '9G999G999G999') AS autovacuum_threshold, CASE WHEN autovacuum_vacuum_threshold + (autovacuum_vacuum_scale_factor::numeric * pg_class.reltuples) < psut.n_dead_tup THEN 'yes' END AS expect_autovacuum
FROM
pg_stat_user_tables psut INNER JOIN pg_class ON psut.relid = pg_class.oid INNER JOIN vacuum_settings ON pg_class.oid = vacuum_settings.oid
ORDER BY 1;