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.
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 WHERE
MONTHS_BETWEEN(order_date, SYSDATE) <= 6 GROUP BY ROLLUP (o.customer_id,
oi.product_id);
C.
SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi. quantity) “Total” FROM
orderjtems 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;
D.
SELECT o.customer_Id, oi.productj_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;