56. View the Exhibit and examine the structure of the PROMOTIONS table.
Using the PROMOTIONS table, you need to find out the names and cost of all the promos done on 'TV'
and 'internet' that ended in the time interval 15th March '00 to 15th October '00.
Which two queries would give the required result? (Choose two.)
A. SELECT promo_name, promo_cost
FROM promotions
WHERE promo_category IN ('TV', 'internet') AND
promo_end_date BETWEEN '15-MAR-00' AND '15-OCT-00';
B. SELECT promo_name, promo_cost
FROM promotions
WHERE promo_category = 'TV' OR promo_category ='internet' AND
promo_end_date >='15-MAR-00' OR promo_end_date <='15-OCT-00';
C. SELECT promo_name, promo_cost
FROM promotions
WHERE (promo_category BETWEEN 'TV' AND 'internet') AND
(promo_end_date IN ('15-MAR-00','15-OCT-00'));
D. SELECT promo_name, promo_cost
FROM promotions
WHERE (promo_category = 'TV' OR promo_category ='internet') AND
(promo_end_date >='15-MAR-00' AND promo_end_date <='15-OCT-00');
Answer: AD
答案解析：
题意要求done on 'TV'and 'internet'
that ended in the time interval 15th March '00 to 15th October '00.
B错误，promo_end_date >='15-MAR-00' OR promo_end_date
<='15-OCT-00' 应使用AND
C错误，promo_category BETWEEN 'TV' AND 'internet'，条件不满足。