pg_subscription_rel
   The catalog pg_subscription_rel contains the
   state for each replicated relation in each subscription.  This is a
   many-to-many mapping.
  
   This catalog only contains tables known to the subscription after running
   either CREATE SUBSCRIPTION or
   ALTER SUBSCRIPTION ... REFRESH
   PUBLICATION.
  
Table 53.55. pg_subscription_rel Columns
| Column Type Description | 
|---|
| 
        Reference to subscription | 
| 
        Reference to relation | 
| 
        
       State code:
        | 
| 
        
       Remote LSN of the state change used for synchronization coordination
       when in  |