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  • 【OCP-12c】2019年CUUG OCP 071考试题库(74题)

    74、View the exhibit and examine the structure of ORDERS and CUSTOMERS tables.

    ORDERS

    Name     Null?       Type

    ORDER_ID  NOT NULL  NUMBER(4)

    ORDER_DATE  NOT NULL   DATE

    ORDER_MODE   VARCHAR2(8)

    CUSTOMER_ID NOT NULL  NUMBER(6)

    ORDER_TOTAL   NUMBER(8, 2)

    CUSTOMERS

    Name  Null?  Type

    CUSTOMER_ID  NOT NULL  NUMBER(6)

    CUST_FIRST_NAME NOT NULL  VARCHAR2(20)

    CUST_LAST_NAME  NOT NULL  VARCHAR2(20)

    CREDIT_LIMIT  NUMBER(9,2)

    CUST_ADDRESS  VARCHAR2(40)

    Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600?Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.

    A. 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' AND c.credit_limit=600)

    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 orders

    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);

    Correct Answer: C

    Section: (none)

    Explanation 相关的语句,注意子查询查出来的是某个列的值:

    INSERT INTO emp (empno,ename,job,deptno,sal)

    VALUES (1,'cuug', 'direct',

    (SELECT deptno

    FROM dept

    WHERE dname='RESEARCH' ), 1000);

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  • 原文地址:https://www.cnblogs.com/cnblogs5359/p/10509748.html
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