I'm sure this is a pretty easy one, but I've spent a long time searching on the internet and still haven't resolved the problem. I am trying to extract the lengths of the fields from a mysql table using DBI. Based on the documentation I read I wrote this code:

$sth=$dbh->prepare('SELECT * FROM userReports WHERE 1=0');
$sth->execute();

my $flh=$sth->{SCALE};
my @lengths=@{$flh};

print "@lengths";
[download]

If I substitute NAME for SCALE then I get an array of column names as expected. However, using SCALE I just get an array full of zeros. I wonder what the problem with this is? Also, is there a better way of doing this?