Reagrding some typical sql query in oracle8i

hi all,
i am facing a problem in sql query,My problem is like that
table emp data like that :
emp_id sal
10 1000
20 2000
30 3000
and i want to show data as follows-
emp_id sal
10 1000
20 3000
30 6000
just show the cumulative total of salary column.
plz its urgent.
ok
bye

SQL> create table t (emp_id number
2 ,sal number
3 );
Table created.
SQL> insert into t values (10, 1000);
1 row created.
SQL> insert into t values (20, 2000);
1 row created.
SQL> insert into t values (30, 3000);
1 row created.
SQL>
SQL>
SQL> select emp_id
2       , sal
3       , Sum (sal) over (order by emp_id) sum_sal
4    from t
5 /
    EMP_ID        SAL    SUM_SAL
        10       1000       1000
        20       2000       3000
        30       3000       6000

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Message was edited by:
Vikas

Can we use formula column in lexical parameter in sql query ...

hi
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Edited by: 797525 on Feb 20, 2012 9:31 PM

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