2과목) 다음 중 HAVING절을 올바르게 사용한 것은?

SELECT DEPTNO FROM EMP HAVING COUNT(*) > 1; SELECT DEPTNO FROM EMP GROUP BY DEPTNO HAVING COUNT(*) > 1; SELECT DEPTNO FROM EMP WHERE COUNT(*) > 1 GROUP BY DEPTNO; SELECT DEPTNO FROM EMP GROUP BY DEPTNO WHERE COUNT(*) > 1;