61.View the Exhibit and examine the structure of the PROMOTIONS table.

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:

The promo should have ended after 1st January 2001.

The promo name should not begin with 'T' or 'N'.

The promo should cost more than $20000.

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')

答案：C

解析：AD，not like和or矛盾，从题目可以知道排除B