* When no I/O activity has been reported in pg_statio_all_tables for a database, the queries resulted in a division by zero. Cange this to a NULL instead. Still a problem for Zabbix, but maybe a little cleaner.
* When no I/O activity has been reported in pg_statio_all_tables for a database, the queries resulted in a division by zero. Cange this to a NULL instead. Still a problem for Zabbix, but maybe a little cleaner.