SELECT messageid, bufferid, time, type, flags, sender, message
FROM backlog
JOIN sender ON backlog.senderid = sender.senderid
-WHERE backlog.bufferid IN (SELECT bufferid FROM buffer WHERE userid = :userid) AND backlog.messageid >= :firstmsg
-ORDER BY messageid DESC;
+WHERE backlog.bufferid IN (SELECT bufferid FROM buffer WHERE userid = :userid)
+ AND backlog.messageid >= :firstmsg
+ORDER BY messageid DESC
LIMIT :limit