postgresql7.1 select bm.bookmark_id, bm.local_title, bm.tree_sortkey from bm_bookmarks bm, bm_bookmarks bm2 where bm.tree_sortkey between bm2.tree_sortkey and tree_right(bm2.tree_sortkey) and bm2.bookmark_id = :root_folder_id and acs_permission__permission_p(bookmark_id, acs__magic_object_id('registered_users'), 'read') <> :public_p order by bm.tree_sortkey