You might be better off tolerating the expense of loading your data into a database of some sort once, perhaps SQLite, and thereafter take advantage of the speed of the database which is optimised for data look-ups, using SQL queries to access your columns. DBI and DBD::SQLite would facilitate this.

I hope this is helpful.

Cheers,

JohnGG

In reply to Re: selecting columns from a tab-separated-values file by johngg
in thread selecting columns from a tab-separated-values file by ibm1620

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