Data spliting procedure

Question

hi all,
i would like to write a procedure which split amount principle and income amount as following order.
i have data stored in this form
due_no      principle      income           due_amt          serial_no     
1     500          200          700          1
2     500          200          700          2
3     500          200          700          3
4     500          200          700          4
4     500          200          700          100
4     500          200          700          100
4     500          200          700          100
i want to split priciple and income amount in case of repeatation of due_no
like
due_no      principle      income           due_amt          serial_no     
1     500          200          700          1
2     500          200          700          2
3     500          200          700          3
4     200          0          200          4
4     150          0          150          10
4     150          50          200          10
4     0          200          200          10
first due_amount should cover principle portion then comes to the income
thanks in advance

Answer 1

I hope that you do realize that your "original data" from your last post is totally different than the one in your original post ...
Anyway, here is a solution:
SQL> create table mytable
  2  as
  3  select 1 due_no, 500 principle, 200 income, 700 due_amt, 1 serial_no from dual union all
  4  select 2, 500, 200, 700, 2 from dual union all
  5  select 3, 500, 200, 700, 3 from dual union all
  6  select 4, 500, 200, 200, 4 from dual union all
  7  select 4, 500, 200, 150, 10 from dual union all
  8  select 4, 500, 200, 200, 11 from dual union all
  9  select 4, 500, 200, 150, 12 from dual
10  /
Tabel is aangemaakt.
SQL> select due_no
  2       , least
  3         ( due_amt
  4         , greatest
  5           ( 0
  6           , principle - sum(due_amt) over (partition by due_no order by serial_no) + due_amt
  7           )
  8         ) principle
  9       , least
10         ( greatest
11           ( 0
12           , sum(due_amt) over (partition by due_no order by serial_no) - principle
13           )
14         , due_amt
15         ) income
16       , due_amt
17       , serial_no
18       , sum(due_amt) over (partition by due_no order by serial_no) running_sum
19    from mytable
20  /
    DUE_NO  PRINCIPLE     INCOME    DUE_AMT  SERIAL_NO RUNNING_SUM
         1        500        200        700          1         700
         2        500        200        700          2         700
         3        500        200        700          3         700
         4        200          0        200          4         200
         4        150          0        150         10         350
         4        150         50        200         11         550
         4          0        150        150         12         700
7 rijen zijn geselecteerd.Regards,
Rob.