Select Query Problem-need help

hi,
Help me out from this problem.
Actually i have a table and the data in it as follows:
Department Name Job Name
Accounts Sr. Accountant
Accounts Jr. Accountant
Accounts Cleark
But i dont want the repeated Department Name.. and i want the same output as follows.
Department Name Job Name
Accounts Sr. Accountant
Jr. Accountant
Cleark
Without using sql reports and Sql Plus additional commands.
The same output should come from a sql query only.
Thanks in Advance
Md Anwer Ali

I shouldn't try to code before I have had at least three cups of coffee. The actual answer is:
select decode(department,lag(department) over (order by department),null,department)
, job
from departments
order by department.
I ran this:
select decode(job,lag(job) over (order by job),null,job)
, ename
from emp
order by job
and got this result:
SQL> /
DECODE(JO ENAME
ANALYST SCOTT
FORD
CLERK SMITH
ADAMS
MILLER
JAMES
MANAGER JONES
CLARK
BLAKE
PRESIDENT KING
SALESMAN ALLEN
MARTIN
TURNER
WARD
14 rows selected.

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P1 P2 P3 P4 P5
5 6 7 8 9
C1 C2 C3 C4 C5
2 3 4 5 6
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P0 P1 P2 P3 P4
9 5 2 2 8
6 5 4 5 3
C0 C1 C2 C3 C4
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NP
What I have tried till now.
I have one more question could you help me with this.
I have an array list of this form.
package mypackage1;
import java.util.*;
public class DD
private int P;
private int C;
private int weight;
public void set_p(int P1)
P=P1;
public void set_c(int C1)
C=C1;
public void set_weight(int W1)
weight=W1;
public int get_p()
return P;
public int get_c()
return C;
public int get_x()
return weight;
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ArrayList a=new ArrayList();
ArrayList min_weights_int=new ArrayList();
ArrayList rows=new ArrayList();
ArrayList temp=new ArrayList();
Hashtable h=new Hashtable();
String v;
int o=0;
DD[] d=new DD[5];
for(int i=0;i<4;i++)
d=new DD();
for(int i=0;i<4;i++)
d[i].set_p(((int)(StrictMath.random()*10 + 1)));
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for(int i=0;i<4;i++)
System.out.println(d[i].get_c());
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System.out.println(d[i].get_x());
for(int i=0;i<4;i++ )
int bi =d[i].get_c();
ArrayList row=new ArrayList();
for(int j=0;j<4;j++)
if( d[j].get_p() >=bi)
d[j].set_weight((int)(StrictMath.random()*10 + 1));
row.add("(" + bi + "," + d[j].get_p() + "," +d[j].get_x() + ")");
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d[j].set_weight(0);
row.add("null");
rows.add(row);
System.out.println(rows);
int f=0;
for(Iterator p=rows.iterator();p.hasNext();)
temp=(ArrayList)p.next();
String S="S" +f;
h.put(S,temp);
String tt=new String();
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String l=temp.get(j).toString();
System.out.println(l);
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f++;
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String key=(String)e.nextElement();
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[\code]

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If you do know Prolog, you could generate lots of random
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