大數據就業實戰培訓 Oracle就業實戰培訓
【優技教育】Oracle 19c OCP 082題庫(Q 18題)- 2024年修正版
考試科目：1Z0-082
考試題量：90
通過分數：60%
考試時間：150min
本文為(CUUG 原創)整理并解析，轉發請注明出處，禁止抄襲及未經注明出處的轉載。
原文地址：http://www.cuug.com.cn/ocp/082kaoshitiku/38219540954.html
第18題：
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執行成功，原因是 having 放在了前面，它是 having 語句中的 and 條件，所以允許用到分組函數。)
Oracle 19c OCP認證需要到Oracle指定的WDP機構，有了培訓記錄之后才能考試，考試需要考2科，分別是082(60%及格)和083(57%及格)，兩科都通過之后才能拿到證書。證書如下：
CUUG是甲骨文的金牌WDP合作機構，30多年品牌，培養了數萬名數據庫人才。想快速通過19c OCP考試的同學可以掃碼聯系老師咨詢。
