March 1, 200619 yr Newbies Hello, I have a database that tracks items on an invoice using a portal. I can total charges on the invoice using a Sum ( store::price ) calculation. How can I calculate total charges for a subcategory of charges? I want to do something like: if (category == "taxable") Sum ( store::price ) That might work in Python or C, but I'm not sure how to do it in Filemaker. Any ideas? Brandon
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