【071题库】最新OCP-071考试题库解析-第32题
071考试是OCP考试科目的一种,由于071考题多变,我们专门收集整理了最新的考试题库,并对这些考题进行讲解,希望可以帮助广大考生。
每周五晚8点,我们有免费的OCP解析公开课,地址:https://ke.qq.com/course/326223 OCP题库交流群:1015267481,验证ocp
-------------------------------------------------------
071题库-第32题、choose the best answer:
Examine the structure of the BOOKS_TRANSACTIONS table.
You want to update this table such that BOOK_ID is set to 'INVALID' for all rows where no MEMBER_ID has been entered.
Examine this partial SQL statement:
SQL> UPDATE books_transactions
SET book_id = 'INVALID'
WHERE...............
Which condition must be used in the WHERE clause to perform the required update?
A) MEMBER_ID = "";
B) MEMBER_ID IS NULL;
C) MEMBER_ID = NULL;
D) MEMBER_ID = '';
Answer:B
(解析:该题的题眼在“where no MEMBER_ID has been entered”)
Oracle技术沙龙:【数据保护顶尖技术-MAA】首次全国首播12c MAA技术 云数据库加上MAA技术组成最豪华的技...
Oracle技术沙龙第49期:【Oracle 数据库云技术分享】Oracle技术沙龙第49期:【Oracle 数据库云技术分享】本次技术沙...
Oracle技术沙龙第48期:【Oracle 12c RAC安装】小编:今天讲什么内容呢?以后有什么用呢? 大师:今天讲的是12c...
- 我要参加技术沙龙