Although mostly irrelevant to the Perl-oriented topic here, it is worth noting that Excel does have the ability to include database queries ... so called Power Query or Get and Transform. So, there are ways to handle database-sized things directly in Excel, such as a dataset of 10 million rows.

In reply to Re^3: Reversing the action of the while loop by Anonymous Monk
in thread Reversing the action of the while loop by Scotmonk

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