Excel Complex Lookup: Find Header based on Lookup Criteria in Matrix with INDEX & SUMPRODUCT

August 18, 2017 Excel Lookup Formulas
Download the workbook here: http://www.xelplus.com/complex-lookup-index-sumproduct/

In this video I show you the answer to one of the questions that was asked some time ago on the Mr. Excel message board (the sample data was changed for the video) - The question is a complex LOOKUP problem - task is to find the header of the lookup criteria which is in a matrix. The lookup value could be in any column and any row - that's what makes the problem complex. How to get the header based on a lookup value that could be in any cell? In the video you'll find my approach;

It uses the INDEX function together with SUMPRODUCT. What is your approach?

Video for Index Match Basics: https://rumble.com/v2skkko
To understand Sumproduct: https://rumble.com/v2sd9km

✔ Alternate Solutions ✔

Watch Kevin's video to see 4 different approaches of solving this
2 with array formulas, 1 with helper columns and last one with a pivot table to normalize the date set: https://youtu.be/u4IcqcQP1FI

Watch Oz's Video from Excel on Fire here which shows how to solve this with a COUNTIFS function and the Power Query method: https://youtu.be/IwBYEXaOSOk

To solve for multiple matches - i.e. non-unique data set, check out this video: https://rumble.com/v2tneqm

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