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.
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