Raymond,

Do you mean CumulativeSum, anyway?   
How you want to display the sum?     Say, all values under empty group value will appear first, IMO.   Next group, with letters, will appear and group total for that group will get displayed.  Do you want this group total to include the sum of blank group total also?  

If yes, then you can try CumulativeSum function.

Happiness Always
BKR Sivaprakash

Hi,

What you can try:

1. in the detail band, create a computed column with an "if" statement that has the value of the column that you want to sum if the group value is a "blank" and which holds a 0 value when it's not. Let's say you name it "cc_value_blank".

2. In the group summary you create another computed column which sums all the values of "cc_value_blank" for that group. Let's say you name it "cc_total_blank"

3. for the other totals you can then create a computed column that sums the values that you want to sum and add the "cc_total_blank" to it.

 You might have to do a GroupCalc() or Sort() from code, since the different computed columns are referencing each other.

I think it should work, but am not a 100% sure.

regards

Hi, Raymond -

I would construct the desired result set in a stored procedure and use that stored procedure as the data source for the group-style DataWindow.

Best regards, John