OCP 11g认证考试题库:051-127题
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127. Examine the data in the CUSTOMERS table:
CUSTNO CUSTNAME CITY
1 KING SEATTLE
2 GREEN BOSTON
3 KOCHAR SEATTLE
4 SMITH NEW YORK
You want to list all cities that have more than one customer along with the customer details.
Evaluate the following query:
SQL>SELECT c1.custname, c1.city
FROM Customers c1 __________________ Customers c2
ON (c1.city=c2.city AND c1.custname<>c2.custname);
Which two JOIN options can be used in the blank in the above query to give the correct output? (Choose
two.)
A. JOIN
B. NATURAL JOIN
C. LEFT OUTER JOIN
D. FULL OUTER JOIN
E. RIGHT OUTER JOIN
Answer: AE