pg_user
   The view pg_user provides access to
   information about database users.  This is simply a publicly
   readable view of
   pg_shadow
   that blanks out the password field.
  
Table 48.100. pg_user Columns
Column Type Description  | 
|---|
        User name  | 
        ID of this user  | 
        User can create databases  | 
        User is a superuser  | 
        User can initiate streaming replication and put the system in and out of backup mode.  | 
        User bypasses every row level security policy, see Section 5.8 for more information.  | 
        
       Not the password (always reads as   | 
        Password expiry time (only used for password authentication)  | 
        Session defaults for run-time configuration variables  |