Select Code to Download

my $dbh = DBI->connect(
    'DBI:mysql:*********', 
    '*****', 
...
    WHERE partno="$img_name";
ENDSQL
$sth->execute;

my $sth = $dbh->prepare(<<END_SQL);
    UPDATE inventory 
    SET    img = ?, thumb = ? 
    WHERE  partno = ?;
ENDSQL
$sth->execute($short_name, $short_tname, $img_name);