OCP-1Z0-051 第141題子查詢的應用

阿新 • • 發佈：2019-02-05

View the Exhibit and examine the structure of CUSTOMERS and GRADES tables.

You need to display names and grades of customers who have the highest credit limit.
Which two SQL statements would accomplish the task? (Choose two.)
A.SELECT custname, grade
      FROM customers, grades
   WHERE (SELECT MAX(cust_credit_limit) FROM customers) BETWEEN startval and endval;

B.SELECT custname, grade
      FROM customers, grades
   WHERE (SELECT MAX(cust_credit_limit) FROM customers) BETWEEN startval and endval
        AND cust_credit_limit BETWEEN startval AND endval;

C.SELECT custname, grade
       FROM customers, grades
    WHERE cust_credit_limit = (SELECT MAX(cust_credit_limit) FROM customers)
         AND cust_credit_limit BETWEEN startval AND endval;

D. SELECT custname, grade
       FROM customers, grades
     WHERE cust_credit_limit IN (SELECT MAX(cust_credit_limit) FROM customers)
           AND MAX(cust_credit_limit) BETWEEN startval AND endval;

答案：BC

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