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Here is my data in sheet1 of excel:

A B

A1 20

A2 2

A1 2

A3 3

Consider the above in an excel sheet. Column A contains duplicate keys and Column B contains quantity. my requirement is, I need a function in Excel which can add values of B for unique values of column A.

so output should be

Sheet 2:

A B

A1 22

A2 2

A3 3

Has anyone worked with such a requirement?

thanks.

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  • This would be a good use for a pivot table. Using SUMIF won't reduce it to only unique values of A.
    – Jesse
    Oct 5, 2012 at 0:21

1 Answer 1

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in sheet 2 place the following formula into cell B2 and drag down:

=SUMIF(Sheet1!A:A,Sheet2!A2,Sheet1!B:B)

Details

This says to check if column A from sheet1 has the key to my left.

If it does then return the sum of all the corresponding cells in column B that meet the requirement.

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