SET ROLE

SET ROLE {DEFAULT | NONE | role [,...] | ALL | ALL EXCEPT role [,...]}

SET DEFAULT ROLE {NONE | role [,...] | ALL | ALL EXCEPT role [,...]} TO {user|CURRENT_USER} [,...]

SET DEFAULT ROLE role1, role2, ... TO user

SET DEFAULT ROLE ALL TO user

SET DEFAULT ROLE NONE TO user

SET DEFAULT ROLE ALL EXCEPT role1, role2 TO user