I have two spreadsheet in Excel file more than 100000 data, Account spreadsheet and premium spreadsheet. I need to find out duplicate data which is present in premium spreadsheet that are not present in Account spreadsheet.
"I need to check that premium spreadsheet has contains or not uniquecustomerid that are not present in account spreadsheet"
If your goal is only to see which value from Premium!
allready exists on Account!
then use something like:
Formula in Premium!B2
:
=COUNTIF(Account!A:A,A2)>0