postgres=# \du

                             List of roles

 Role name |                   Attributes                   | Member of 

———–+————————————————+———–

 mqis      | Password valid until infinity                  | {}

 mqis_app  | Password valid until infinity                  | {}

 postgres  | Superuser, Create role, Create DB, Replication | {}

postgres=# SELECT u.usename AS “User name”,

  u.usesysid AS “User ID”,

  CASE WHEN u.usesuper AND u.usecreatedb THEN CAST(‘superuser, create

database’ AS pg_catalog.text)

       WHEN u.usesuper THEN CAST(‘superuser’ AS pg_catalog.text)

       WHEN u.usecreatedb THEN CAST(‘create database’ AS

pg_catalog.text)

       ELSE CAST(” AS pg_catalog.text)

  END AS “Attributes”

FROM pg_catalog.pg_user u

ORDER BY 1;

————————————————-

 User name | User ID |    Attributes     

———–+———+——————-

 mqis      |   16393 | 

 mqis_app  |   16397 | 

 postgres  |      10 | superuser, create+

           |         | database

(3 rows)

postgres=#