Select Code to Download

use Text::CSV_XS;

...
    $rows++;
    }
print "Total $rows rows (including header line)\n";

$ ll xx.csv
12862169 -rw-rw-rw- 1 merijn users 415423 Sep  6 16:00 xx.csv
$ perl -MDBI -wE'say DBI->connect("dbi:CSV:f_ext=.csv")->selectrow_arr
+ayref("select count(*) from xx")->[0]," rows in fs"'
8739 rows in fs