I have data like this in Excel:
ColA ColB ColC ColD
1B 1B E
2B 4B C
3B 5B E
4B
5B
I would appreciate a formula to be applied in ColB for the following result:
ColA ColB ColC ColD
1B E 1B E
2B 4B C
3B 5B E
4B C
5B E
I think this may be much simpler than the possible duplicate suggested - ie just a very standard LOOKUP (which is duplicated elsewhere even MORE often!):
in B2 and copied down to suit:
=IFERROR(VLOOKUP(A2,C:D,2,0),"")