1z0-071 Exam Dumps | Evaluate the following two queries: SQL> SELECT cust_last_name, cust_city FROM customers WHERE cust_credit

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Question 51/72

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. There would be no change in performance.

C. Performance would degrade in query 2.

D. Performance would improve in query 2.

Correct Answer: B

Explanation/Reference:
References:
http://oraclexpert.com/restricting-and-sorting-data/

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