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I want to know the count of distinct invoice no based on the selection of item category code.
for exemple in the data set
i want output as below
itemcategorycode no. of invoice
because in invoice no (900012346,900020000) only proease item sold .
Similarly for itemcategorycode uniwash, no of distinct invoice 1(900012347),
and for itemcategorycode xpert no of distinct invoice 1(900012348)
Please find the attached excel file and do the needful.