61. View the Exhibit and examine the structure of the PROMOTIONS table.
You need to generate a report of all promos from the PROMOTIONS table based on the following
conditions:
1. The promo name should not begin with 'T' or 'N'.
2. The promo should cost more than $20000. >20000
3. The promo should have ended after 1st January 2001.
Which WHERE clause would give the required result?
A. WHERE promo_name NOT LIKE 'T%' OR promo_name NOT LIKE 'N%' AND promo_cost > 20000
AND promo_end_date > '1-JAN-01'
B. WHERE (promo_name NOT LIKE 'T%' AND promo_name NOT LIKE 'N%')OR promo_cost > 20000
OR promo_end_date > '1-JAN-01'
C. WHERE promo_name NOT LIKE 'T%' AND promo_name NOT LIKE 'N%' AND promo_cost > 20000
AND promo_end_date > '1-JAN-01'
D. WHERE (promo_name NOT LIKE '%T%' OR promo_name NOT LIKE '%N%') AND(promo_cost >
20000 AND promo_end_date > '1-JAN-01')
Answer: C
答案解析：
因为三个条件是并行的，即要求都满足条件，所以都应该使用AND连接符。
A,promo_name NOT LIKE 'T%' OR promo_name
NOT LIKE 'N%',OR 应改为AND
B,两个OR应该改为AND
C正确
D第一个OR应该改为AND