If you need to see some more humanly readable and comprehensible server statistics like deleted records etc try this. It shows numbers for all databases on server:
select datname as database, pg_stat_get_db_numbackends(oid) as "Number of active server processes for database", pg_stat_get_db_xact_commit(oid) as "Transactions committed in database", pg_stat_get_db_xact_rollback(oid) as "Transactions rolled back in database", pg_stat_get_db_blocks_fetched(oid) as "Number of disk block fetch requests for database", pg_stat_get_db_blocks_hit(oid) as "Number of disk block fetch requests found in cache for database", pg_stat_get_db_tuples_returned(oid) as "Number of tuples returned for database", pg_stat_get_db_tuples_fetched(oid) as "Number of tuples fetched for database", pg_stat_get_db_tuples_inserted(oid) as "Number of tuples inserted in database", pg_stat_get_db_tuples_updated(oid) as "Number of tuples updated in database", pg_stat_get_db_tuples_deleted(oid) as "Number of tuples deleted in database", pg_stat_get_db_numbackends(oid) as "Number of active server processes for database", pg_stat_get_db_xact_commit(oid) as "Transactions committed in database", pg_stat_get_db_xact_rollback(oid) as "Transactions rolled back in database", pg_stat_get_db_blocks_fetched(oid) as "Number of disk block fetch requests for database", pg_stat_get_db_blocks_hit(oid) as "Number of disk block fetch requests found in cache for database", pg_stat_get_db_tuples_returned(oid) as "Number of tuples returned for database", pg_stat_get_db_tuples_fetched(oid) as "Number of tuples fetched for database", pg_stat_get_db_tuples_inserted(oid) as "Number of tuples inserted in database", pg_stat_get_db_tuples_updated(oid) as "Number of tuples updated in database", pg_stat_get_db_tuples_deleted(oid) as "Number of tuples deleted in database" from pg_database