Say I have a product category lookup like so:
Sheet 1
Product Name | Product Category
--------------------------------------
product 1 | A
product 2 | A
product 3 | B
product 4 | A
product 5 | B
product 6 | C
and I also have a list of purchases which only use Product Name like this:
Sheet 2
Product Name | Purchase Quantity
---------------------------------------
product 1 | 35
product 4 | 10
product 5 | 5
I would like to produce a rollup like this:
Product Category | Purchase Quantity
------------------------------------------
A | 45
B | 5
C | 0
I've tried a variety of ways to solve this like:
SUMIF(LOOKUP('Sheet 2'!A2:A6,'Sheet 1'!A:A,'Sheet 2'!B:B), "=A", 'Sheet 2'!B2:B6)
SUMPRODUCT(LOOKUP('Sheet 2'!A2:A6, 'Sheet 1'!A:A, 'Sheet 2'!B:B)="A"*'Sheet 2'!B2:B6)
Excel doesn't like the first one. It says the formula is incorrect, but I'm not seeing why. The second one yields #VALUE. Any help on this would be much appreciated. Thanks in advance!
With A in D2, use this as an array formula.
=SUM(SUMIFS(Sheet2!B$2:B$4, Sheet2!A$2:A$4, IF(Sheet1!B$2:B$7=D2, Sheet1!A$2:A$7)))
Array formulas need to be finished with Ctrl+Shift+Enter, not just Enter.