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Material on the topics “Generating Reports by Grouping Related Data” and “Hierarchical Retrieval” are found in the Appendix of the Oracle Database 11g training manuals that accompany the Recommended Training courses.
1Z0-047 Oracle Database SQL Expert Practice Exams
Oracle authorized practice exam from Self Test Software. 1Z0-047 Oracle Database SQL Expert
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1.Evaluate the following CREATE SEQUENCE statement: CREATE SEQUENCE seq1 START WITH
100 INCREMENT BY 10 MAXVALUE 200 CYCLE NOCACHE; The sequence SEQ1 has generated
numbers up to the maximum limit of 200. You issue the following SQL statement: SELECT
seq1.nextval FROM dual; What is displayed by the SELECT statement?
A.1
B.10
C.100
D.an error
Correct:A 2.View the Exhibit and examine the descriptions of ORDER_ITEMS and ORDERS tables. You want
to display the CUSTOMER_ID, PRODUCT_ID, and total (UNIT_PRICE multiplied by QUANTITY) for
the order placed. You also want to display the subtotals for a CUSTOMER_ID as well as for a
PRODUCT_ID for the last six months. Which SQL statement would you execute to get the desired
output?
A.
SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi.quantity) «Total» FROM order_items oi
JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id,oi.product_id) WHERE
MONTHS_BETWEEN(order_date, SYSDATE) <= 6;
B.SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi.quantity) «Total» FROM order_items oi
JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id,oi.product_id) HAVING
MONTHS_BETWEEN(order_date, SYSDATE) <= 6;
C.SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi.quantity) «Total» FROM order_items oi
JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id, oi.product_id) WHERE
MONTHS_BETWEEN(order_date, SYSDATE) >= 6;
D.SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi.quantity) «Total» FROM order_items oi
JOIN orders o ON oi.order_id=o.order_id WHERE MONTHS_BETWEEN(order_date, SYSDATE) <= 6
GROUP BY ROLLUP (o.customer_id, oi.product_id) ;
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