Performance tuning -- Recent Shipments

Question

I need help tuning this query. User input is customer_id(1351) and location('San Antonio - PO Box 795054').
SELECT DISTINCT po_num, shipping_date, bol
FROM (SELECT DISTINCT FIRST_VALUE (po_number) OVER (PARTITION BY bol ORDER BY ship_date DESC)
po_num,
FIRST_VALUE (ship_date) OVER (PARTITION BY bol, po_number ORDER BY ship_date DESC)
shipping_date,
FIRST_VALUE (bol) OVER (PARTITION BY bol, po_number ORDER BY ship_date DESC)
bol
FROM (SELECT /*+ INDEX_JOIN(BILL_SU) */
ool.cust_po_number po_number,
TRUNC
(ool.actual_shipment_date
) ship_date,
wbrv.bill_of_lading_number bol
FROM apps.oe_order_headers_all ooh,
apps.oe_order_lines_all ool,
apps.wsh_delivery_details dd,
apps.wsh_delivery_assignments da,
apps.hz_cust_site_uses_all bill_su,
apps.wsh_bols_rd_v wbrv
WHERE wbrv.delivery_id = da.delivery_id
AND dd.delivery_detail_id = da.delivery_detail_id
AND dd.source_line_id = ool.line_id
AND dd.source_header_id = ool.header_id
AND ool.header_id = ooh.header_id
AND ool.flow_status_code = ('CLOSED')
AND ooh.sold_to_org_id = 1351
AND ool.actual_shipment_date IS NOT NULL
AND ooh.ordered_date >= SYSDATE - 180
AND bill_su.LOCATION IN
('San Antonio - PO Box 795054')
AND ooh.invoice_to_org_id =
bill_su.site_use_id
UNION
SELECT ool.cust_po_number po_number,
TRUNC
(ool.actual_shipment_date
) ship_date,
nd.attribute3 bol
FROM apps.oe_order_headers_all ooh,
apps.oe_order_lines_all ool,
apps.wsh_delivery_details dd,
apps.wsh_delivery_assignments da,
apps.wsh_new_deliveries nd,
apps.hz_cust_site_uses_all bill_su
WHERE nd.delivery_id = da.delivery_id
AND dd.delivery_detail_id = da.delivery_detail_id
AND dd.source_line_id = ool.line_id
AND dd.source_header_id = ool.header_id
AND ool.header_id = ooh.header_id
AND ool.flow_status_code = ('CLOSED')
AND ooh.sold_to_org_id = 1351
AND ool.actual_shipment_date IS NOT NULL
AND nd.attribute3 IS NOT NULL
AND ooh.ordered_date >= SYSDATE - 365
AND bill_su.LOCATION IN
('San Antonio - PO Box 795054')
AND ooh.invoice_to_org_id =
bill_su.site_use_id
ORDER BY ship_date DESC)
ORDER BY shipping_date DESC)
WHERE ROWNUM < 11
ORDER BY shipping_date DESC;

Answer 1

In the future, please format your code using the { code } tags (no spaces in between) so that your code retains formatting and is easier for us to read.
I looked at your query and it seems like you should be able to remove the entire UNION portion of the query (the only difference i could detect was in the ordered date logic).
AND
    AND ooh.ordered_date >= SYSDATE - 180
OR
    AND nd.attribute3 IS NOT NULL
    AND ooh.ordered_date >= SYSDATE - 365
)So no UNION required, should save you a lot of processing time.
***I'd also remove the INDEX HINT, unless you're certain you're smarter than the cost based optimizer (which does quite a good job assuming your statistics are up to date).
Edited by: Tubby on Nov 12, 2009 9:45 AM