在Excel中具有最大条件的求和产品

Question

I have this formula but it's not working

=SUMPRODUCT(--(NUMBERVALUE(RIGHT(Sheet1!A:A,2))=MAX(NUMBERVALUE(Sheet1!A:A,2))),--(Sheet1!AG:AG=A9),(Sheet1!AA:AA))

My problem is in the first section array of the sumproduct

NUMBERVALUE(RIGHT(Sheet1!A:A,2))=MAX(NUMBERVALUE(Sheet1!A:A)))

The column A contain the below kind of values:

Till_Date
2016/10
2016/10
2016/11
2016/11
2016/12
2016/8

etc..

For each row, I want to set a condition on the month if it is the last month in the whole column, so the idea is to get the max of the right 2 digits and for each row compare right 2 digits with the max value of the whole columns.

However it is not working, feeling that im so close to fix it but could not locate the problem

Any assistance would be much much appreciated.

Thanks in advance

Georges Sabbagh

Answer 1

I don't think you are very close to the solution.

1. From "2016/8" what do you think, the rightmost 2 digits will be?
2. Even NUMBERVALUE will result in #VALUE error in cell A1 = "Till_Date" - rightmost 2 = "te"
3. In your MAX(NUMBERVALUE(Sheet1!A:A)) NUMBERVALUE will result in #VALUE error for each cell in A1:A7 since all are text. So MAX is #VALUE error also.

Problem 1 is solvable by calculating the position of the "/" and taking the number after that.

Problems 2 and 3 are solvable only by excludig the errors. But IFERROR does not work within the matrix context produced by SUMPRODUCT . For this a real array formula is needed.

So maybe

{=SUM(IF(IFERROR(--RIGHT(Sheet1!A:A,LEN(Sheet1!A:A)-FIND("/",Sheet1!A:A)),0)=MAX(IFERROR(--RIGHT(Sheet1!A:A,LEN(Sheet1!A:A)-FIND("/",Sheet1!A:A)),0)),IF(Sheet1!AG:AG=A9,Sheet1!AA:AA)))}

will work for you.

This is an array formula. Input it into the cell without the curly brackets and press [Ctrl]+[Shift]+[Enter] to confirm. The curly brackets will then appear automatically.

Using the whole Sheet1!A:A range this will be of very bad performance. So you should shrink the range. Sheet1!$A$1:$A$10000 for example. Same with Sheet1!$AG$1:$AG$10000 and Sheet1!$AA$1:$AA$10000 .