2026-03-12 20:23:15

tpt/ast/04_cbo_troubleshoot_denormalized.sql

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+-- 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') 
+              dynamic_sampling(4) opt_param('_optimizer_use_feedback', 'false') 
+              leading(c d e o oi)
+              use_hash(o)
+              use_hash(oi)
+              index(o)
+              index(oi)
+              NO_SWAP_JOIN_INPUTS(@"SEL$4B12EFE6" "I"@"SEL$2")
+              NO_SWAP_JOIN_INPUTS(@"SEL$4B12EFE6" "D"@"SEL$2")
+       */
+    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'
+AND o.customer_id = 189 -- (select customer_id from oe.customers c2
+                        -- WHERE c2.cust_first_name   = 'Gena'
+                        -- AND   c2.cust_last_name    = 'Harris')
+AND oi.customer_id = 189 -- (select customer_id from oe.customers c3
+                         -- WHERE c3.cust_first_name   = 'Gena'
+                         -- AND   c3.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
+/