$r = q("SELECT id FROM item WHERE item.uid = %d
AND `item`.`parent` = ( SELECT `parent` FROM `item` WHERE ( `id` = '%s' OR `uri` = '%s' ))
$sql_extra AND unseen = 1",
$r = q("SELECT id FROM item WHERE item.uid = %d
AND `item`.`parent` = ( SELECT `parent` FROM `item` WHERE ( `id` = '%s' OR `uri` = '%s' ))
$sql_extra AND unseen = 1",