Well, what you really want is something like this (assuming you have transactions turned on (which you really, really want), and RaiseError as well): 
eval {
    my $sth = $dbh -> prepare (<<'    --');
               update  new_table 
                  set  newData = ? 
                where  newID   = ?
    --
    while (my ($id, $data) = each %Data) {
        $sth -> execute ($data, $id)
    }
};
if ($@) {
    $dbh -> rollback;
    die $@;
}
else {
    $dbh -> commit;
}

[download]
Note that the data inserted doesn't get quotes tacked on - that's why you are using placeholders, quoting is being taken care of.

Abigail

In reply to Re: How to Speed up MySQL w/ Perl by Abigail-II
in thread How to Speed up MySQL w/ Perl by rsiedl

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