Return a Result set from a cursor

Question

Is it necessary to create a temporary table to show the rows I want? there is another way?
Ex.:
DECLARE
CURSOR c1 is
SELECT ename, empno, sal FROM emp
ORDER BY sal DESC;
my_ename VARCHAR2(10);
my_empno NUMBER(4);
my_sal NUMBER(7,2);
BEGIN
OPEN c1;
FOR i IN 1..5 LOOP
FETCH c1 INTO my_ename, my_empno, my_sal;
EXIT WHEN c1%NOTFOUND;
INSERT INTO temp VALUES (my_sal, my_empno, my_ename);
COMMIT;
END LOOP;
CLOSE c1;
END;
SELECT * FROM temp ORDER BY col1 DESC;

Answer 1

No cursor or temp table needed. Note the difference between dense_rank() and rank().
sql>select *
  2    from (select ename, empno, sal, dense_rank() over (order by sal desc) rank
  3            from emp)
  4   where rank <= 5;
ENAME          EMPNO       SAL      RANK
KING            7839      5000         1
SCOTT           7788      3000         2
FORD            7902      3000         2
JONES           7566      2975         3
BLAKE           7698      2850         4
CLARK           7782      2450         5
6 rows selected.
sql>select *
  2    from (select ename, empno, sal, rank() over (order by sal desc) rank
  3            from emp)
  4   where rank <= 5;
ENAME          EMPNO       SAL      RANK
KING            7839      5000         1
SCOTT           7788      3000         2
FORD            7902      3000         2
JONES           7566      2975         4
BLAKE           7698      2850         5
5 rows selected.
-- and the non-analytic function approach
sql>select *
  2    from (select ename, empno, sal
  3            from emp
  4           order by sal desc)
  5   where rownum <= 5;
ENAME          EMPNO       SAL
KING            7839      5000
SCOTT           7788      3000
FORD            7902      3000
JONES           7566      2975
BLAKE           7698      2850
5 rows selected.