Thanks, this was very helpful. I forgot to add that I wanted to make a new hash with only the common keys, and their associate column values (concatenated), but I believe I've got it. The reason for doing so was to split the columns apart in a subroutine I have for comparing the column values per key.

In reply to Re^2: Matching hash keys from different hashes and utilizing in new hash by FIJI42
in thread Matching hash keys from different hashes and utilizing in new hash by FIJI42

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