THIS. If you have data, treat it as data. It's a bit more work to set up the first time, but after that it's so much easier - switching from csv to sqlite to mysql to Db2 to ... doesn't matter, it's so much easier once you see your data as actual data rather than a file format to fight with.

Life has taken me far afield from Perl (mostly C# and Javascript nowadays), but there's so much I've learned in perl that is relatively straight forward in other languages. Except this one: treating a csv file as a source for SQL without having to import it into an actual database system. There's lots I miss about perl, and many things in other languages that are the same (with a different, usually longer, syntax), but this one tops my list. You're using perl, take advantage of it.

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