multi-part identifier alias.fieldname could not be bound... help me!!

Hello everyone!

I'm having a problem in using MS SQL 2005 as an ODBC in Powerbuilder 10.

My query which seems to work in Powerbuilder 5 does not work in Powerbuilder 10.

When I execute my query, I got this message "multi-part identifier alias.fieldname could not be bound. I don't know what's seems wrong. I even tried putting no alias but still it won't work..

help me please...

select sc.transaction_code,
case when :as_transtype = '' then drh.so_number else case when :as_transtype = 'SI' then drh.si_number else case when :as_transtype = 'DR' then drh.dr_number else :ad_documentnumber end end end document_number,
case when :as_transtype = '' then drh.so_date else case when :as_transtype = 'SI' then drh.si_date else case when :as_transtype = 'DR' then drh.dr_date end end end transaction_date,
pcd.item_number,
pcd.serial_number,
pcd.serv_tag,
pcd.rev_no,
space(10) supplier_name,
c.customer_name,
pcd.pcc_number,
pcd.supplier_refdocno,
pcd.ref_date,
pcd.original_tag,
pcd.item_description
from pcc_detail pcd
inner join pcc_header pch
on pch.pcc_number = pcd.pcc_number
inner join delivery_receipt_header drh
on pch.so_number = drh.so_number
inner join stock_card sc
on sc.so_number = drh.so_number and
sc.item_number = pcd.item_number
inner join customer c
on drh.customer_code = c.customer_code
where sc.transaction_code in ('DR', 'SE') and
sc.transaction_type <> 'RS' and
sc.item_number like case when :as_itemnumber = '' then sc.item_number else '%' + :as_itemnumber + '%' end and
pcd.serv_tag like case when :as_servicetag = '' then pcd.serv_tag else '%' + :as_servicetag + '%' end and
pcd.serial_number like case when :as_serialnumber = '' then pcd.serial_number else '%' + :as_serialnumber + '%' end and
pch.customer_name like case when :as_customer = '' then pch.customer_name else '%' + :as_customer + '%' end and
:as_transtype in ('SO','SI','DR','PC','') and
sc.transaction_code = case when :as_transtype = 'SI' then 'SE' else 'DR' end and
( pch.so_number = case when :ad_documentnumber = 0 then pch.so_number else :ad_documentnumber end or
pch.si_number = case when :ad_documentnumber = 0 then pch.si_number else :ad_documentnumber end or
pch.pcc_number like case when :ad_documentnumber = '' then pch.pcc_number else '%' + :as_documentnumber + '%' end or
pch.dr_number = case when :ad_documentnumber = 0 then pch.dr_number else :ad_documentnumber end
) and
pcd.item_description like case when :as_itemdesc = '' then pcd.item_description else '%' + :as_itemdesc + '%' end

this is my query

Did you happen to find a solution to this? I'm having the same problem.