column_privileges #
   The view column_privileges identifies all
   privileges granted on columns to a currently enabled role or by a
   currently enabled role.  There is one row for each combination of
   column, grantor, and grantee.
  
   If a privilege has been granted on an entire table, it will show up in
   this view as a grant for each column, but only for the
   privilege types where column granularity is possible:
   SELECT, INSERT,
   UPDATE, REFERENCES.
  
Table 35.13. column_privileges Columns
Column Type Description  | 
|---|
        Name of the role that granted the privilege  | 
        Name of the role that the privilege was granted to  | 
        Name of the database that contains the table that contains the column (always the current database)  | 
        Name of the schema that contains the table that contains the column  | 
        Name of the table that contains the column  | 
        Name of the column  | 
        
       Type of the privilege:   | 
        
         |