my $sql = q{select * from accountaction where action_date > ?};
    my $sth = $dbh->prepare($sql);
    $sth->execute('01-01-2006');
    $sth->finish;

##</code><code>##

    my $sql = q{select * from accountaction where action_date > '01-01-2006'};
    my $sth = $dbh->prepare($sql);
    $sth->execute();
    $sth->finish;

##</code><code>##

    my $sql = q{select * from accountaction where action_date > ?};
    my $sth = $dbh->prepare($sql);
    $sth->execute('2006-01-01');
    $sth->finish;