select max(auditid) auditid, itemid,previousid,contentid,dts,userid,deletestatus from
(
select 0 auditid,itemid,previousid,contentid,dts,userid,deletestatus from tblitems where itemid in (4435,4436,19560)
union
select * from itemaudits where itemid in (4435,4436,19560)
) ah
group by itemid,previousid,contentid,dts,userid,deletestatus
order by itemid, auditid desc