select * from repmgr_update_standby_location('');
 repmgr_update_standby_location 
--------------------------------
 f
(1 row)

select * from repmgr_get_last_standby_location();
 repmgr_get_last_standby_location 
----------------------------------
 
(1 row)

select * from repmgr_update_last_updated();
 repmgr_update_last_updated 
----------------------------
 
(1 row)

select * from repmgr_get_last_updated();
 repmgr_get_last_updated 
-------------------------
 
(1 row)