Synopsis

ALTER USER nom [ [ WITH ] option [ ... ] ]

où option peut être :

      SUPERUSER | NOSUPERUSER
    | CREATEDB | NOCREATEDB
    | CREATEROLE | NOCREATEROLE
    | CREATEUSER | NOCREATEUSER
    | INHERIT | NOINHERIT
    | LOGIN | NOLOGIN
    | REPLICATION | NOREPLICATION
    | CONNECTION LIMIT limite_connexion
    | [ ENCRYPTED | UNENCRYPTED ] PASSWORD 'motdepasse'
    | VALID UNTIL 'dateheure' 

ALTER USER nom RENAME TO nouveau_nom

ALTER USER nom SET parametre_configuration { TO | = } { valeur | DEFAULT }
ALTER USER nom SET parametre_configuration FROM CURRENT
ALTER USER nom RESET parametre_configuration
ALTER USER nom RESET ALL