pg_publication_rel
   The catalog pg_publication_rel contains the
   mapping between relations and publications in the database.  This is a
   many-to-many mapping.  See also Section 51.78
   for a more user-friendly view of this information.
  
Table 51.40. pg_publication_rel Columns
| Column Type Description | 
|---|
| 
        Row identifier | 
| 
        Reference to publication | 
| 
        Reference to relation |