View the Exhibit and examine the structure of the CUSTOMERS table.
Using the CUSTOMERS table, y ou need to generate a report that shows an increase in the credit
limit by 15% for all customers.
Customers whose credit limit has not been entered should have the message ” Not Available”
displayed.
Which SQL statement would produce the required result?
A.
SELECT NVL(cust_credit_limit,’Not Available’)*.15 “NEW CREDIT” FROM customers;
B.
SELECT NVL(cust_credit_limit*.15,’Not Available’) “NEW CREDIT” FROM customers;
C.
SELECT TO_CHAR(NVL(cust_credit_limit*.15,’Not Available’)) “NEW CREDIT” FROM customers;
D.
SELECT NVL(TO_CHAR(cust_credit_limit*.15),’Not Available’) “NEW CREDIT” FROM customers;
Explanation:
NVL Function
Converts a null value to an actual value:
Data types that can be used are date, character, and number.
Data types must match:
– NVL(commission_pct,0)
– NVL(hire_date,’01-JAN-97′)
– NVL(job_id,’No Job Yet’)