It's just a single SQL statement, which should be easy since you have it in DBD::CSV already.. 
  SELECT
    colIP,
    SUM(colPartitionSize) as size,
    SUM(colPartitionFree) as free
  FROM table_name
  GROUP BY colIP

[download]
Otherwise, to do it in perl, you would loop over the rows, hashing on the IP. Something like: 
my $rows = ...; # ref to AoH
my %ips;
foreach my $row (@$rows){
  $ips{ $row->{colIP} }->{ colPartitionSize } += $row->{colPartitionSi
+ze};
  $ips{ $row->{colIP} }->{ colPartitionFree } += $row->{colPartitionFr
+ee};
}
print Dumper \%ips;

[download]

In reply to Re: Combine data in table by davidrw
in thread Combine data in table by DrAxeman

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