Re: Re: [SQL] variables in SQL??

You can create a running total provided that you have a unique
sequentially increasing (or decreasing) ID for each row. See the
following example:

create table tran(id int primary key, price dec(8,2));
insert into tran values(1,5.00);
insert into tran values(2,4.00);
insert into tran values(3,10.00);
insert into tran values(4,2.00);
insert into tran values(5,7.00);

select price, (select sum(price) from tran as d1
where d1.id <= d2.id) as "sum"
from tran as d2;

price | sum
-------+-------
5.00 | 5.00
4.00 | 9.00
10.00 | 19.00
2.00 | 21.00
7.00 | 28.00
(5 rows)

Francisco wrote:

> > what im trying to do is have a Sum of a colum.. as it goes forwards with the
> > cursor..
> > like so:
> >
> > Price|Sum
> > 5|5
> > 4|9
> > 10|19
> > 2|21
> > 7|28
>

====================================
Craig Johannsen
Critical Path Consulting, Inc.
604-762-1514
http://members.home.net/cjohan/cpath
====================================