Oracle Database SQL 12c 1z0-071 Exam Practice Test 4

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Question : 11 of 57

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Examine the description of the EMPLOYEES table:

Which query is valid?

SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;

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