（160）View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables. There is only one customer with the cust_last_name column having value Roberts.

Which INSERT statement should be used to add a row into the ORDERS table for the customer whose CUST_LAST_NAME is Roberts and CREDIT_LIMIT is 600?

A.

INSERT INTO orders VALUES (1,'10-mar-2007', 'direct',

(SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);

B.

INSERT INTO orders (order_id,order_date,order_mode,

(SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600),order_total)

VALUES(1,'10-mar-2007', 'direct', &&customer_id, 1000);

C.

INSERT INTO (SELECT o.order_id, o.order_date,o.order_mode,c.customer_id, o.order_total

FROM orders o, customers c

WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' ANDc.credit_limit=600 )

VALUES (1,'10-mar-2007', 'direct',(SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);

D.

INSERT INTO orders (order_id,order_date,order_mode,

(SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600),order_total)

VALUES(1,'10-mar-2007', 'direct', &customer_id, 1000);

答案：（A）

解析：

INSERT语句的VALUES子句中可以使用子查询

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OCP 1Z0 051 160

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