071考试既是ocp11g的考试科目,又是ocp12c的考试科目,所以关注的人很多,由于071考试题多变,我们专门收集了近期的071考试原题,并对071考试进行了讲解,分享给大家。
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071考试原题-第35题、choose the best answer:
View the Exhibit and examine the structure of the ORDERS table.
Which UPDATE statement is valid?
A) UPDATE orders
SET order_date = '12-mar-2007'
AND order_total = TO_NUMBER(NULL)
WHERE order_id = 2455;
B) UPDATE orders
SET order_date = '12-mar-2007',
order_total = NULL
WHERE order_id = 2455;
C) UPDATE orders
SET order_date = TO DATE('12-mar-2007','dd-mon-yyyy'),
SET order_total = TO NUMBER(NULL)
WHERE order_id = 2455;
D) UPDATE orders
SET order_date = '12-mar-2007',
order_total IS NULL
WHERE order_id = 2455;
Answer:D
(解析:注意语法)
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