2026-03-12 20:23:15

tpt/ast/04_cbo_troubleshoot_3.sql

@@ -0,0 +1,50 @@
+-- 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')
+           cardinality(c o 50000)
+           OPT_ESTIMATE(@"SEL$1", JOIN, ("C"@"SEL$1", "E"@"SEL$1" "D"@"SEL$1" "O"@SEL$1), SCALE_ROWS=100000)
+           cardinality(c e d o 100000)
+    */
+    dep.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
+    hr.departments dep  -- 1
+  , hr.employees   e    -- 1
+  , oe.orders      o    -- ?
+  , oe.order_items oi   -- ?
+  , oe.products    prod -- 1
+  , oe.customers   c    -- 1
+  , oe.promotions  prom -- ?
+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 dep.department_id   = e.department_id
+   -- filters
+AND dep.department_name   = 'Sales'             -- 1 row
+AND e.first_name        = 'William'           -- 1 row
+AND e.last_name         = 'Smith'
+AND prod.product_name   = 'Mobile Web Phone'  -- 1 row (view)
+AND c.cust_first_name   = 'Gena'              --
+AND c.cust_last_name    = 'Harris'            -- 1 row
+GROUP BY
+    dep.department_name
+  , e.first_name
+  , e.last_name
+  , prod.product_name
+  , c.cust_first_name
+  , c.cust_last_name
+ ORDER BY
+    total_price
+/