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perl -e '$x=100.09;printf "%d\n",$x'
100

while (my $data = $_src_dbh->get_array())
    {
        my $record = sprintf "%s%s%d",join(",", @$data);
        print "$record\n";
    }

while (my $data = $_src_dbh->get_array())
    {
...
        print $record;
    }