ALTER USER — change a database role
ALTER USERname[ [ WITH ]option[ ... ] ] whereoptioncan be: SUPERUSER | NOSUPERUSER | CREATEDB | NOCREATEDB | CREATEROLE | NOCREATEROLE | CREATEUSER | NOCREATEUSER | INHERIT | NOINHERIT | LOGIN | NOLOGIN | CONNECTION LIMITconnlimit| [ ENCRYPTED | UNENCRYPTED ] PASSWORD 'password' | VALID UNTIL 'timestamp' ALTER USERnameRENAME TOnewnameALTER USERnameSETparameter{ TO | = } {value| DEFAULT } ALTER USERnameRESETparameter