Quickest way to identify which items are in an Excel file?

Sorry for the vague subject line. Not enough space to explain in detail.

I have a large Excel file and a small Excel file. The main column I'm watching is a column for inventory ID numbers (SKUs). I want to identify the SKUs from the large file that are also in the small file. I could do it manually but that takes a long time. Is there a fast way to go through the large file and flag the lines that are also in the small file?

Thanks!!

Donut Tim2013-07-12T17:16:20Z

Favorite Answer

Put the following formula in the next column to the long list column. It assumes the short list begins in column A and the long list begins in column E:

=COUNTIF($A$1:$A$25,E1)

Copy it down the long list column. It returns a total of the numbers in the short list that match the number in the long list in the adjacent cell.

. .

dmcbeth@rogers.com2013-07-13T14:30:12Z

In the large file..........create a blank column.............
Use the VLOOKUP function/formula to check for SKUs of the large file that exist in the Small file.

Those that do not exist in the small file will return #N/A