MySQLで最後に挿入したデータのＰＲＹＭＡＲＹ値を得る

my $sth = $db->prepare("select LAST_INSERT_ID();");
$sth->execute;
my @row = $sth->fetchrow_array;
$sth->finish;
my $last_inserted_id = $row[0];

参照
http://dev.mysql.com/doc/refman/5.1/ja/information-functions.html
http://dev.mysql.com/doc/refman/4.1/ja/miscellaneous-functions.html