hello_beginner, Let me try to be helpful, without doing your homework for you. Store your data in a hash of arrays (use column 1 as the hash key). Show us what you have done and how it failed. I see that your output contains field 2 data which is not mentioned in your spec. - Explain. You can improve the appearance of your post by enclosing your input and output in code tags.
Bill

In reply to Re: join column 3 values of unique values in column 1 by BillKSmith
in thread join column 3 for unique values by hello_beginner

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