SQL & PL/SQL

Hi all....

I am using oracle 10g........

The following query is a union of two queries....The second query is a subset of the first meaning that it has fewer tables and fewer select columns as well....(I have to use union on the two queries....for a gud reason) .What i want is that the union return only the superset records from result of the union of the two queries when i pass a parameter at runtime like supplier_name as mentioned in the the query below .......

/* Formatted on 2012/05/14 16:49 (Formatter Plus v4.8.8) */

SELECT * FROM(SELECT DISTINCT reql.unit_meas_lookup_code "UNIT",
reqh.type_lookup_code "PR_TYPE",
reql.document_type_code "SUBTYPE",
reqh.segment1 "PR_NO", reqh.creation_date "PR DATE",
mtb.segment1 "ITEM_CODE",
pol.item_description "DESCRIPTION",
mcb.segment1 "INVENTORY_CATEGORY",
reql.manufacturer_part_number "MFG NO/DRG NO",
poh.authorization_status "AUTHORIZATION STATUS",
papf.full_name "BUYER", NULL "CUSTOMER",
DECODE (poh.type_lookup_code,
'RFQ', poh.segment1
) "RFQ NO",
DECODE (poh.type_lookup_code,
'RFQ', poh.creation_date
) "RFQ DATE",
NULL "RFQ SUPPLIER",
DECODE (poh.type_lookup_code,
'QUOTATION', poh.segment1
) "QTN NO",
DECODE (poh.type_lookup_code,
'QUOTATION', poh.reply_date
) "QTN DATE",
DECODE (poh.type_lookup_code,
'STANDARD', poh.segment1,
'BLANKET', poh.segment1,
'PLANNED', poh.segment1
) "PO_NO",
DECODE (poh.type_lookup_code,
'STANDARD', poh.creation_date,
'BLANKET', poh.creation_date,
'PLANNED', poh.creation_date
) "PO DATE",
pv.vendor_name "SUPPLIER",
NULL "SUPPLIER ACKNOWLEDGMENT DATE",
TRUNC
(reqh.creation_date
)
- TRUNC (poh.creation_date)
"NO OF DAYS TAKEN FROM PR TO PO",
DECODE (rcvh.asn_type,
'ASBN', rcvh.shipment_num
) "ASBN NO",
rcvh.receipt_num "RECEIPT NO",
rcvh.creation_date "RECEIPT DATE",
apia.invoice_num "INVOICE_NO",
NULL "QUALITY INSPECTION DATE",
rcvt.inspection_status_code "INSPECTION RESULT",
NULL "STOCKING DATE",
TRUNC (poh.creation_date)
- TRUNC (reqh.creation_date) "NO OF DAYS TAKEN FROM",
NULL "PV NO", NULL "PV DATE",
apc.amount "PAYMENT RELEASE AMOUNT",
apc.released_date "PAYMENT RELEASE DATE",
apc.payment_method_code "PAYMENT RELEASE MODE",
NULL "NO OF DAYS TAKEN FROM RECEIPT"
FROM po_requisition_headers_all reqh,
po_requisition_lines_all reql,
po_req_distributions_all reqd,
po_distributions_all pod,
po_headers_all poh,
po_lines_all pol,
po_line_locations_all poll,
rcv_shipment_headers rcvh,
rcv_shipment_lines rcvl,
rcv_transactions rcvt,
ap_invoice_distributions_all apid,
ap_invoices_all apia,
ap_payment_schedules_all aps,
ap_invoice_payments_all app,
ap_checks_all apc,
per_all_people_f papf,
po_vendors pv,
mtl_system_items_b mtb,
mtl_categories_b mcb,
mtl_item_categories mic
WHERE reqh.requisition_header_id =
reql.requisition_header_id
AND reql.requisition_line_id = reqd.requisition_line_id
AND pod.req_distribution_id = reqd.distribution_id
AND pol.po_line_id = pod.po_line_id
AND poh.po_header_id = pol.po_header_id
AND pol.po_line_id = poll.po_line_id
AND pod.po_distribution_id = apid.po_distribution_id
AND pod.po_distribution_id = rcvt.po_distribution_id
AND rcvl.shipment_header_id = rcvh.shipment_header_id
AND rcvh.shipment_header_id = rcvt.shipment_header_id
AND rcvt.po_distribution_id = apid.po_distribution_id
AND app.check_id = apc.check_id
AND apid.invoice_id = apia.invoice_id
AND apia.invoice_id = app.invoice_id
AND app.invoice_id = aps.invoice_id
AND poh.agent_id = papf.person_id
AND poh.vendor_id = pv.vendor_id
AND pol.item_id = mtb.inventory_item_id
AND mic.inventory_item_id = pol.item_id
AND poh.authorization_status = 'APPROVED'
AND mcb.category_id = mic.category_id
UNION
SELECT DISTINCT NULL "UNIT", NULL "PR_TYPE", NULL "SUBTYPE",
NULL "PR_NO", NULL "PR DATE",
mtb.segment1 "ITEM_CODE",
pol.item_description "DESCRIPTION",
mcb.segment1 "INVENTORY_CATEGORY", NULL,
poh.authorization_status "AUTHORIZATION STATUS",
papf.full_name "BUYER", NULL "CUSTOMER",
DECODE (poh.type_lookup_code,
'RFQ', poh.segment1
) "RFQ NO",
DECODE (poh.type_lookup_code,
'RFQ', poh.creation_date
) "RFQ DATE",
NULL "RFQ SUPPLIER",
DECODE (poh.type_lookup_code,
'QUOTATION', poh.segment1
) "QTN NO",
DECODE (poh.type_lookup_code,
'QUOTATION', poh.reply_date
) "QTN DATE",
DECODE (poh.type_lookup_code,
'STANDARD', poh.segment1,
'BLANKET', poh.segment1,
'PLANNED', poh.segment1
) "PO_NO",
DECODE (poh.type_lookup_code,
'STANDARD', poh.creation_date,
'BLANKET', poh.creation_date,
'PLANNED', poh.creation_date
) "PO DATE",
pv.vendor_name "SUPPLIER",
NULL "SUPPLIER ACKNOWLEDGMENT DATE", NULL,
DECODE (rcvh.asn_type,
'ASBN', rcvh.shipment_num
) "ASBN NO",
rcvh.receipt_num "RECEIPT NO",
rcvh.creation_date "RECEIPT DATE",
apia.invoice_num "INVOICE_NO",
NULL "QUALITY INSPECTION DATE",
rcvt.inspection_status_code "INSPECTION RESULT",
NULL "STOCKING DATE", NULL, NULL "PV NO",
NULL "PV DATE", apc.amount "PAYMENT RELEASE AMOUNT",
apc.released_date "PAYMENT RELEASE DATE",
apc.payment_method_code "PAYMENT RELEASE MODE",
NULL "NO OF DAYS TAKEN FROM RECEIPT"
FROM po_distributions_all pod,
po_headers_all poh,
po_lines_all pol,
rcv_shipment_headers rcvh,
rcv_shipment_lines rcvl,
rcv_transactions rcvt,
ap_invoice_distributions_all apid,
ap_invoices_all apia,
ap_payment_schedules_all aps,
ap_invoice_payments_all app,
ap_checks_all apc,
per_all_people_f papf,
po_vendors pv,
mtl_system_items_b mtb,
mtl_categories_b mcb,
mtl_item_categories mic
WHERE pol.po_line_id = pod.po_line_id
AND poh.po_header_id = pol.po_header_id
AND pod.po_distribution_id = apid.po_distribution_id
AND pod.po_distribution_id = rcvt.po_distribution_id
AND rcvl.shipment_header_id = rcvh.shipment_header_id
AND rcvh.shipment_header_id = rcvt.shipment_header_id
AND rcvt.po_distribution_id = apid.po_distribution_id
AND app.check_id = apc.check_id
AND apid.invoice_id = apia.invoice_id
AND apia.invoice_id = app.invoice_id
AND app.invoice_id = aps.invoice_id
AND poh.agent_id = papf.person_id
AND poh.vendor_id = pv.vendor_id
AND pol.item_id = mtb.inventory_item_id
AND mic.inventory_item_id = pol.item_id
AND poh.authorization_status = 'APPROVED'
AND mcb.category_id = mic.category_id) a
WHERE 1 = 1
AND ( a.pr_type = NVL (:pr_type, a.pr_type)
OR (:pr_type IS NULL AND a.pr_type IS NULL)
)
AND ( a.pr_no = NVL (:pr_no, a.pr_no)
OR (:pr_no IS NULL AND a.pr_no IS NULL)
)
AND ( a.unit = NVL (:unit_lookup_code, a.unit)
OR (:unit_lookup_code IS NULL AND a.unit IS NULL)
)
AND a.supplier = NVL (:supplier_name, a.supplier)
AND a.inventory_category = NVL (:inventory_category, a.inventory_category)
AND a.buyer = NVL (:buyer_name, a.buyer)
AND a.invoice_no = NVL (:invoice_no, a.invoice_no)
AND a.item_code = NVL (:item_code, a.item_code)

Edited by: Dave on May 14, 2012 5:08 AM

Edited by: Dave on May 14, 2012 5:14 AM