Hello, Does anyone which is a more accurate estimate of a table's live rows: pg_class.reltuples ( http://www.postgresql.org/docs/current/static/catalog-pg-class.html) OR pg_stat_all_tables.n_live_tup ( http://www.postgresql.org/docs/current/static/monitoring-stats.html#PG-STAT-ALL-TABLES-VIEW)? In my test database their values are not the same.
- Is pg_class.reltuples an estimation of live tuples only, or is it of all tuples (both live and dead)? I would guess it's live only but that is a guess - In the database I am testing: - pg_class.reltuples <> pg_stat_all_tables.n_live_tup - pg_class.reltuples <> (pg_stat_all_tables.n_live_tup + pg_stat_all_tables.n_dead_tup) I understand that pg_stat_all_tables is probably the more expensive view to query but I am already querying both so I only care which is more accurate. Thanks! Will *Will J. Dunn* *willjdunn.com <http://willjdunn.com>*