If I understand you correctly, take a look at tblSync. I wrote this to do table synchronization between heterogeneous databases. I have since added functionality to handle tables w/ no unique keys.
I believe that the following code is what you're after. 
# Set up you db connections - my statment handler is $rsth.
# prepare and execute your query etc...
__SNIP___
my $fetch = \&fetch;
$counter = 0;
my @rmaporder = qw|col1 col2 col3|;
my %rdb;
for ( @rmaporder )
{
    $counter++;
    $rdb{$_} = undef;
    $rsth->bind_col( $counter, \$rdb{$_} );
}
my $rkey = 'col1';
# Fetch the data and hold in these  hashes
%RemoteDB = $fetch->($rsth, \%rdb, $rkey);

sub fetch
{
    my $sth    = shift;
    my $dbhash = shift;
    my $key    = shift;
    my %DB;
    while ( $sth->fetchrow_hashref )
    {
        # Ensure that ALL data is properly quoted
        # using the dbi->quote method
        $DB{$dbhash->{$key}}{$_} 
             = $rdbh->quote($dbhash->{$_}) for keys %$dbhash 
    }

    return %DB or errpt ( 'FATAL', 'Unable to return data from fetch',
+ 'NA', 'NA' ); 
}
__SNIP__

[download]
Ted
--
"That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved."
  --Ralph Waldo Emerson

In reply to Re: DBI::bind_colums throws error when element of binding hash is deleteed by tcf03
in thread DBI::bind_colums throws error when element of binding hash is deleteed by atemon

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