QUESTION NO: 50
View the Exhibits and examine the structures of the PROMOTIONS and SALES tables.
Evaluate the following SQL statements:
Which statement is true regarding the output of the above query?
A. It gives details of product IDs that have been sold irrespective of whether they had a promo or not
B. It gives the details of promos for which there have been no sales
C. It gives the details of promos for which there have been sales
D. It gives details of all promos irrespective of whether they have resulted in a sale or not
Answer: D
答案解析：
参考：129：http://blog.csdn.net/rlhua/article/details/12878447
Explanation:
Oracle 1z0-051 Exam
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