View the Exhibit and examine the structure of the PROMOTIONS table. Which SQL statements are valid?
(Choose all that apply.)
A.
SELECT promo_id. DECODE(NVL(promo_cost.O).promo_cost * 0.25. 100) “Discount”
FROM promotions;
B.
SELECT promo id. DECODE(promo_cost. 10000.
DECODE(promo_category. ‘Gl\\ promo_cost * 25. NULL). NULL) “Catcost” FROM promotions;
C.
SELECT promo_id. DECODE(NULLIF(promo_cost. 10000). NULL. promo_cost*.25, *N/A’) “Catcost”
FROM promotions;
D.
SELECT promo_id. DECODE(promo_cost. >10000. ‘High’. <10000. ‘Low’) “Range”FROM promotions;
Explanation:
Note: there are some syntax issues in this question.
A.
SELECT promo_id, DECODE(NVL(promo_cost,0), promo_cost,
promo_cost * 0.25, 100) “Discount” FROM promotions;
B.
SELECT promo_id, DECODE(promo_cost, 10000,DECODE(promo_category, ‘G1’,
promo_cost *.25,NULL),NULL) “Catcost” FROM promotions;