select
         sp1.cost_change
||','||  sp1.cost_change_desc
||','||  sp1.reason
||','||  to_char(sp1.active_date,'DD-MON-YYYY HH24:MI:SS')
||','||  sp1.status
||','||  sp1.cost_change_origin
||','||  to_char(sp1.create_date,'DD-MON-YYYY HH24:MI:SS')
||','||  sp1.create_id
||','||  to_char(sp1.approval_date,'DD-MON-YYYY HH24:MI:SS')
||','||  sp1.approval_id
from     supp_prods sp1
where    sp1.cost_change   in (select sp.cost_change
                                from   supp_stat     dcp,
                                         sup_detail     spd,
                                        sup_prd         sp
                                where  sp.active_date       = to_date('02-feb-2008 00:00:00','DD-MON-YYYY HH24:MI:SS')
                                and    sp.cost_change       = spd.cost_change
                                and    spd.item              = dcp.item
                                and    spd.supplier          = dcp.supplier
                                and     sp.origin_country_id = dcp.origin_country_id
                                and    sp.unit_cost         = dcp.unit_cost)