CREATE USER — define a new database role
CREATE USERname[ [ WITH ]option[ ... ] ] whereoptioncan be: SUPERUSER | NOSUPERUSER | CREATEDB | NOCREATEDB | CREATEROLE | NOCREATEROLE | INHERIT | NOINHERIT | LOGIN | NOLOGIN | REPLICATION | NOREPLICATION | BYPASSRLS | NOBYPASSRLS | CONNECTION LIMITconnlimit| [ ENCRYPTED ] PASSWORD 'password' | VALID UNTIL 'timestamp' | IN ROLErole_name[, ...] | IN GROUProle_name[, ...] | ROLErole_name[, ...] | ADMINrole_name[, ...] | USERrole_name[, ...] | SYSIDuid
   CREATE USER is now an alias for
   CREATE ROLE.
   The only difference is that when the command is spelled
   CREATE USER, LOGIN is assumed
   by default, whereas NOLOGIN is assumed when
   the command is spelled
   CREATE ROLE.
  
   The CREATE USER statement is a
   PostgreSQL extension.  The SQL standard
   leaves the definition of users to the implementation.