"Select feld1 from tabelle where feld2 like $param"

Select feld1 from tabelle where feld2 like ?

my $param = 'ksdf%';
my $stmt = "SELECT feld1 FROM tabelle WHERE feld2 LIKE ?";
my $sth = $dbh->prepare($stmt) or die $dbh->errstr;
$sth->execute($param) or die $dbh->errstr;