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 51.53. pg_subscription_rel Columns
| Name | Type | References | Description | 
|---|---|---|---|
| srsubid | oid |  | Reference to subscription | 
| srrelid | oid |  | Reference to relation | 
| srsubstate | char | State code: i= initialize,d= data is being copied,s= synchronized,r= ready (normal replication) | |
| srsublsn | pg_lsn | End LSN for sandrstates. |