Need Sql Query that Suppress the repeating rows.

Question

Hi Sir,
I have below data set.
DeptID  Sum(SAL) Avg(Sal)
  10      1300      1300
  10      2450      1300
  10      5000      1300
  20      800        800
  20      1100      800
  20      2975      800
  20      3000      800
  30      800        800
  30      1100      800
  30      2975      800
  40      3000      800
  40      4000      900
I Need  SQL query that can remove the duplicate or suppress.Just like below data set.
Output:
DeptID  Sum(SAL) Avg(Sal)
  10      1300      1300
            2450      1300
            5000      1300
  20       800        800
            1100      800
            2975      800
            3000      800
            800        800
  30      1100      800
            2975      800
  40      3000      800
           4000      900
Could you please help me on this..

Answer 1

Your requiremnt is more of a reporting request which should not be handled in SQL. For example in SQL Plus you can use the BREAK command
SQL> break on deptno
SQL> select deptno, ename from emp order by deptno;
    DEPTNO ENAME
        10 KING
           CLARK
        20 JONES
           SCOTT
           SMITH
           ADAMS
        30 TURNER
           MARTIN
           WARD
           ALLEN
           BLAKE
11 rows selected.
SQL>
But if you still wish to do it in SQL you can use ROW_NUMBER analytic function and achieve it like this
select decode(rno, 1, deptno) deptno
     , ename
  from (
          select row_number() over(partition by deptno order by ename) rno
               , deptno
               , ename
            from emp