$uris = DBA::select('item-uri', ['id'], ["`id` IN
(SELECT `uri-id` FROM `post-thread` WHERE `received` < ?
AND NOT `uri-id` IN (SELECT `uri-id` FROM `post-thread-user`
$uris = DBA::select('item-uri', ['id'], ["`id` IN
(SELECT `uri-id` FROM `post-thread` WHERE `received` < ?
AND NOT `uri-id` IN (SELECT `uri-id` FROM `post-thread-user`