In addition to the advice shared by hippo above about implementing strict and warnings before all else, you should also consider using a dedicated module to parse your CSV file, e.g. Text::CSV_XS. Or even better, since you are apparently wanting to filter on date range and so forth, use DBD::CSV and query the data using SQL, possibly using a query builder like SQL::Abstract.


The way forward always starts with a minimal test.

In reply to Re: group by and sum for two columns by 1nickt
in thread group by and sum for two columns by gowthamvels

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