This query retrieves information about the health of PostgreSQL tables
SELECT
schemaname,
relname AS table_name,
last_vacuum,
last_autovacuum,
last_analyze,
last_autoanalyze,
n_live_tup AS live_tuples,
n_dead_tup AS dead_tuples,
vacuum_count,
autovacuum_count
FROM
pg_stat_all_tables
WHERE
schemaname NOT IN ('pg_catalog', 'information_schema')
and n_dead_tup > 0
ORDER BY
n_dead_tup DESC;
Voila: