I've read maybe a dozen posts with like issues but can't help believing there is a really simple solution to my problem, which is shown in the example below. The Invoice_Total Sum at the table1_Customer group level showing $30 is incorrect. The correct value is $10 since there is just the single invoice #1 in the table.
The SUM function is looking at all the bottom level group rows and assuming $10 for each of them (even though their Invoice_Total cells are blank). I would like it to sum only the table1_Invoice rows (only 1 row shown in this simple example).
Is there not some simple SUM expression that will aim the addition at only the immediate child group instead?
Row Groups Customer Invoice# Invoice_Total Item_Name Item_Class
table1_Customer Smith $30
table1_Invoice 1 $10
table1_Item A Domestic
table1_Item B Import
table1_Item C Mars
HomeCookN