Oracle 19c OCP 认证考试 082 题库(第18题)- 2024年修正版

【优技教育】Oracle 19c OCP 082题库(Q 18题)- 2024年修正版

考试科目：1Z0-082

考试题量：90

通过分数：60%

考试时间：150min

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第18题：

Q 18、

Choose the best answer.

Examine the description of the EMPLOYEES table:

Name Null? Type

-------------------------------------------------------------

EMPLOYEE_ID NOT NULL NUMBER(4)

EMPLOYEE_NAME NOT NULL VARCHAR2 (100)

SALARY NOT NULL NUMBER(6,2) .

DEPARTMENT_ID NOT NULL NUMBER(4)

Which statement will fail?

A) SELECT department_id, COUNT(*)

FROM employees

WHERE department_id <> 90

HAVING COUNT(*) >= 3

GROUP BY department_id;

B) SELECT department_id, COUNT (*)

FROM employees

WHERE department_id <> 90

AND COUNT(*) >= 3

GROUP BY department_id;

C) SELECT department_id, COUNT (*)

FROM employees

WHERE department_id < 90

GROUP BY department_id

HAVING COUNT(*) >= 3;

D) SELECT department_id, COUNT (*)

FROM employees

HAVING department_id < 90

AND COUNT(*) >= 3

GROUP BY department_id;

Answer：B

(解析：D 答案是出人意料可以执行成功，原因是 having 放在了前面，它是 having 语句中的 and 条件，所以允许用到分组函数。)

Oracle 19c OCP认证需要到Oracle指定的WDP机构，有了培训记录之后才能考试，考试需要考2科，分别是082(60%及格)和083(57%及格)，两科都通过之后才能拿到证书。证书如下：