Marcelo,
Assuming that "cod" is unique and sequencial, you can use the following:
SELECT *, ( SELECT SUM( value) from table as t2 where t2.cod <= t1.cod)
as running_total
FROM table as t1
ORDER BY cod;
jll
Marcelo Pereira wrote:
>
> Hello All,
>
> I have a single table as:
>
> cod date value
> ---+-------------+-------
> 1 | 2002-03-12 | 5
> 2 | 2002-03-13 | 4
> 3 | 2002-03-13 | 7
> 4 | 2002-03-14 | 3
>
> ... and I would like to do a select that do `partial sums'.
>
> So, for instance, I would like to do a select that returns:
>
> cod date value partial sum
> ---+-------------+-------+--------------
> 1 | 2002-03-12 | 5 | 5
> 2 | 2002-03-13 | 4 | 9
> 3 | 2002-03-13 | 7 | 16
> 4 | 2002-03-14 | 3 | 19
>
> As you can see, the row `partial sum' is what I am looking for. Do you
> have any idea how can I do it?
>
> Thanks in advance,
>
> Marcelo Pereira
