Oracle
1Z0-047 · Question #225
1Z0-047 Question #225: Real Exam Question with Answer & Explanation
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Question
View the Exhibit and examine the description of the EMPLOYEES table. You want to display the EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT_ID for all the employees who work in the same department and have the same manager as that of the employee having EMPLOYEE_ID 104. To accomplish the task, you execute the following SQL statement: SELECT employee_id, first_name, department_id FROM employees WHERE (manager_id, department_id) =(SELECT department_id, manager_id FROM employees WHERE employee_id = 104) AND employee_id <> 104; When you execute the statement it does not produce the desired output. What is the reason for this?
Exhibit
Options
- AThe WHERE clause condition in the main query is using the = comparison operator, instead of EXISTS.
- BThe WHERE clause condition in the main query is using the = comparison operator, instead of the IN operator.
- CThe WHERE clause condition in the main query is using the = comparison operator, instead of the = ANY
- DThe columns in the WHERE clause condition of the main query and the columns selected in the subquery
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