Cumulative totals in report

Question

Hi,
I've a table having customer code, customer name, dr_cr, amount fields
SELECT a.CUCODE, a.cuname, a.DR_CR,
decode(a.DR_CR,'D',a.AMOUNT) Debit,
decode(a.DR_CR,'C',a.AMOUNT) Credit,
nvl(decode(a.DR_CR,'D',a.AMOUNT),0)-nvl(decode(a.DR_CR,'C',a.AMOUNT),0) Total,
a.narration1
FROM Tablename a
ORDER BY a.CUCODE
I want to show cumulative totals for each row that is debit-credit amount. Is that possible, if yes, how?
Thanks and Regards,
Sudha.

Answer 1

Sudha,
You must have missed the analytical query that Denes had mentioned. You need to use SUM( ) OVER () to make things work. I have modified your query as below. There could be syntax issues, which you may have to fix.
SELECT x.CUCODE, x.cuname, x.DR_CR,
       decode(x.DR_CR,'D',x.AMOUNT) Debit,
       decode(x.DR_CR,'C',x.AMOUNT) Credit,
       x.Total,
       x.narration1,
       SUM(x.total) OVER () running_total
FROM (  
    SELECT a.CUCODE, a.cuname, a.DR_CR, a.amount,
           decode(a.DR_CR,'D',a.AMOUNT) Debit,
           decode(a.DR_CR,'C',a.AMOUNT) Credit,
           nvl(decode(a.DR_CR,'D',a.AMOUNT),0)-nvl(decode(a.DR_CR,'C',a.AMOUNT),0) Total,
           a.narration1
    FROM  Tablename a
) x
ORDER BY x.CUCODEYou may also want to read this article:
http://www.oracle.com/technology/oramag/code/tips2005/062005.html
Thanks.
Ravi