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READ Free Dumps For Oracle- 1z0-007





Question ID 8053

Evaluate this SQL statement: SELECT e.emp_name, d.dept_name FROM employees e JOIN departments d USING (department_id) WHERE d.department_id NOT IN (10,40) ORSER BY dept_name; The statement fails when executed. Which change fixes the error?

Option A

remove the ORDER BY clause

Option B

remove the table alias prefix from the WHERE clause

Option C

remove the table alias from the SELECT clause

Option D

prefix the column in the USING clause with the table alias

Option E

prefix the column in the ORDER BY clause with the table alias

Option F

replace the condition "d.department_id NOT IN (10,40)" in the WHERE clause with "d.department_id <> 10 AND d.department_id <> 40"

Correct Answer CE
Explanation Explanation/Reference: Explanation: Prefix the column in the ORDER BY Clause would cause the statement to succeed, assuming that the statement failed because the deptname existed in employee & department tables. Not C: Removing the alias from the columns in the SELECT clause would cause the Statement to fail if the columns existing in both tables.


Question ID 8054

Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables: EMPLOYEES EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE NEW_EMPLOYEES EMPLOYEE_ID NUMBER Primary Key NAME VARCHAR2 (60) Which DELETE statement is valid?

Option A

DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);

Option B

DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_ employees);

Option C

DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey');

Option D

DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey');

Correct Answer C
Explanation

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