I have a table that looks like this
A B
ID1 data 123
ID2 data 234
ID1 data 456
ID2 data 567
I am trying to find the best way
I know the question is already answered, but if any one is interested, here is the formula for a multiple criteria backwards lookup. =LOOKUP(2,1/(--(A1:A4=D1)*--(C1:C4=D2)),B1:B4)
With data in A1:B4 and D1="ID2", try entering in E1:
=LOOKUP(2,1/(A1:A4=D1),B1:B4)
Note: LOOKUP returns the last value if the lookup value is larger than any of the values in the lookup range. Any errors are ignored.