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oracle/tpt/ast/04_cbo_troubleshoot_1.sql

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2026-03-12 21:23:47 +01:00
-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
SELECT /*+ opt_param('_optimizer_use_feedback', 'false') */
d.department_name
, e.first_name
, e.last_name
, prod.product_name
, c.cust_first_name
, c.cust_last_name
, SUM(oi.quantity)
, sum(oi.unit_price * oi.quantity) total_price
FROM
oe.orders o
, oe.order_items oi
, oe.products prod
, oe.customers c
, oe.promotions prom
, hr.employees e
, hr.departments d
WHERE
-- joins
o.order_id = oi.order_id
AND oi.product_id = prod.product_id
AND o.promotion_id = prom.promo_id (+)
AND o.customer_id = c.customer_id
AND o.sales_rep_id = e.employee_id
AND d.department_id = e.department_id
-- filters
AND d.department_name = 'Sales'
AND e.first_name = 'William'
AND e.last_name = 'Smith'
AND prod.product_name = 'Mobile Web Phone'
AND c.cust_first_name = 'Gena'
AND c.cust_last_name = 'Harris'
GROUP BY
d.department_name
, e.first_name
, e.last_name
, prod.product_name
, c.cust_first_name
, c.cust_last_name
ORDER BY
total_price
/