OCP 1Z0 051 QUESTION NO: 59

QUESTION NO: 59

Evaluate the following two queries:

SQL> SELECT cust_last_name, cust_city

FROM customers

WHERE cust_credit_limit IN (1000, 2000, 3000);

SQL> SELECT cust_last_name, cust_city

FROM customers

WHERE cust_credit_limit = 1000 OR cust_credit_limit = 2000 OR

cust_credit_limit = 3000;

Which statement is true regarding the above two queries?

A. Performance would improve in query 2 only if there are null values in the

CUST_CREDIT_LIMIT column

B. Performance would degrade in query 2

C. There would be no change in performance

D. Performance would improve in query 2

Answer: C

与正式题库55重复

/article/8014256.html