Help with account Statements

Question

Hi,
i'm needing a litle help. I want to create a financial managment with this data:
- Date of the transaction
- Details of the transaction
- If it is a positive amount, it is shown as a debit
- If it is a negative amount it is shown as a credit
- The balance of all transactions, which consists of adding to the balance in the previous line, the debit of the current line and subtracting the credit in the same line.
I will create something like:
-- Field --
Account
Date
Details
Amount
idTransaction
My problems is how to calculate the balance and show in respective row.. can someone help?
I use Oracle 10g express edition
Message was edited by:
CPC

Answer 1

Like this ?
SQL> create table my_transactions
  2  as
  3  select 1 account, trunc(sysdate)-3 trdate, 'blah1' details, 100 amount, 1 id from dual union all
  4  select 1, trunc(sysdate)-2, 'blah2', -200, 2 from dual union all
  5  select 1, trunc(sysdate)-1, 'blah3', 1000, 3 from dual union all
  6  select 1, trunc(sysdate), 'blah4', -500, 4 from dual
  7  /
Tabel is aangemaakt.
SQL> select trdate
  2       , details
  3       , case sign(amount) when 1 then amount end debit
  4       , case sign(amount) when -1 then amount end credit
  5       , sum(amount) over (partition by account order by id) balance
  6    from my_transactions
  7  /
TRDATE              DETAI      DEBIT     CREDIT    BALANCE
20-10-2006 00:00:00 blah1        100                   100
21-10-2006 00:00:00 blah2                  -200       -100
22-10-2006 00:00:00 blah3       1000                   900
23-10-2006 00:00:00 blah4                  -500        400
4 rijen zijn geselecteerd.Regards,
Rob.