Group records using sum ??

Hello

I'm a new to the whole webi environment and trying to build a report.

I have a Stock table, which can contain multiple entries for one Product. Now i want to print the sum of the stock.quanitity for each product.

I created a report with a group for Products.ProductNumber. The result looks like this

Scenario 2:

productNo________Quantity

-

1001_______________2

1002_______________4

1003_______________2

1003_______________1

...

The Problem is, that now i have multiple rows for one product, but i want just one row for each product and the Quantity should be the Sum over all

stock.quantity for each product:

productNo________Quantity

-

1001_______________2

1002_______________4

1003_______________3

Scenario 2:

Material   productNo________Quantity

-

1            1001_______________2

2            1002_______________4

3            1003____ __________ 2

4            1003_______________1

...

The Problem is Material having distinct records where it was needed and also i have multiple rows for one product, but i want just one row for each product and the Quantity should be the Sum over all stock.quantity for each product:

Any Ideas Who can help me? tried searching forum but couldn't find an solution.

Thanks,

Dinya.