postgresql7.1 select mail_class_id, name from ml_mail_classes where acs_permission__permission_p(mail_class_id, :user_id, 'read') = 't' select list_id, name from ml_mailing_lists where acs_permission__permission_p(list_id, :user_id, 'read') = 't' and expiration_date > current_timestamp select selection_id, title from us_selections where acs_permission__permission_p(selection_id, :user_id, 'read') = 't'