【12c OCP】最新CUUG OCP-071考試題庫（50題）
阿新 • • 發佈：2019-03-01
table max structure ces 考試題庫 bject ocp 試題 null 50、(11-15)choose two
Examine the structure of the MARKS table:
Which two statements would execute successfully?
A) SELECT SUM(subjectl+subject2+subject3)
FROM marks
WHERE student_name IS NULL;
B) SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subjectl)
FROM marks
WHERE subjectl > subject2;
C) SELECT student_name,subjectl
FROM marks
WHERE subjectl > AVG(subjectl);
D) SELECT student_name, SUM (subjectl)
FROM marks
WHERE student_name LIKE ‘R%‘;
Answer：AB
(解析：C 答案 where 子句中用到了 avg 函數，必須用 having;D 答案 student_name 沒有在 group by 子句中出現。
B 答案可以寫成如下方式運行：
SELECT SUM(DISTINCT NVL(comm,0)), MAX(sal)
FROM emp
WHERE sal > comm;
)
【12c OCP】最新CUUG OCP-071考試題庫（50題）