Pls. help select over partitons

Hi Experts
I've data like this.
<pre class="jive-pre"><code class="jive-code jive-java">
OrderNo OrderQTY OnhandQTY OnhandSubInvCode
311000014 50 50 FC_AREA
311000014 50 119 ST-FG
311000015 50 70 FC_AREA
311000015 50 120 ST-FG
</code></pre>
But I am looking for a output like below...
<pre class="jive-pre"><code class="jive-code jive-java">
OrderNo OrderQTY OnhandQTY OnhandSubInvCode
311000014 50 50 FC_AREA
119 ST-FG
311000015 70 70 FC_AREA
120 ST-FG
</code></pre>
I'm try to used function over (partition by ...) but its not success.
Pls. suggest me which functions how can i applied for its.
Thank for advance.

You mean like this?
SQL> ed
Wrote file afiedt.buf
1 select case when deptno = lag(deptno) over (order by deptno) then null else deptno end as deptno
2        ,empno, sal
3 from emp
4* order by emp.deptno, empno
SQL> /
    DEPTNO      EMPNO        SAL
        10       7782       2450
                 7839       5000
                 7934       1300
        20       7369        800
                 7566       2975
                 7788       3000
                 7876       1100
                 7902       3000
        30       7499       1600
                 7521       1250
                 7654       1250
                 7698       2850
                 7844       1500
                 7900        950
14 rows selected.
SQL>

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there few error in way You are writing...
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 String strSelection;
 char charSelection;
 System.out.println("Please enter your selection(a ,b or c)" );
 strSelection = scan.next();
 //calling checking error
 charSelection = strSelection.charAt(0);
 switch(charSelection)
 case 'A':
 case 'a':
 System.out.println("Your selection is U.S.A...thc");
 //save file and back to the
 break;
 case 'B':
 case 'b':
 System.out.println("Your selection is Canada....thc");
 break;
 case 'C':
 case 'c':
 System.out.println("You are back to the preivous meun");
 quitSubMeun = true;
 break;
 case 3:
 System.out.println("Thank you using our program");
 quitMainMeun = true;
 //The error occurs in my meun.it work fine when i just go through all the main meun.However, once i try
 //to go to my subMeun and try to get back to my main meun. I can`t select any value on my main meun..
 //i try it for a lot time and i can`t figure out this problem ...pls help ...give me some suggestion
}

I dont understand one thing. you are writing a simple program and created a whole bunch of code in which you got lost.
Secondly why are you passing the choice in a method? i bet that is where the problem is.

Pls. help select over partitons

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