I have found a thread that can help for the first answer but was stuck on the next answer.
I want to compare sales for the first half year of 2011 and the first half year for 2012. After copying the data from 2 worksheets and removing duplicate rows, my first problem was:
Unable to return "0" when no sales was found for 2011 or 2012 when I use vlookup on the summary sheet (unable to use isblank, "", gives me error on "")
when the result returns a "#N/A" on the sales of either year, when I want to do a calculation on another column to compare the sales for the 2 years, it cannot subtract as the field with "#N/A" is not a number.
I had attached a sample file for reference.
I want to know from this list, what are the customers that has sales in 2011 but no sales in 2012 and no sales in 2011 but have sales in 2012.
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