Hi excel experts. Hope you can point me in the right direction. I've been struggling for a few days without success. I think I need a lookup with match &/or index, but can't figure it out.
I have invoice extract by cust & product with billing date as key. I need to lookup correct pricing based on a separate pricing extract with Cust / Prod & 2 columns having date start & date end ... this table is 30M+ rows big.
I concatenated the Cust & Prod thinking this would help with vlookup, but I know little about match/index functions.
Attached example file for your reference.
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