$db->do('UPDATE counters SET pagecounter = pagecounter + 1 WHERE pagename = ?',
   undef, $pagename);

##</code><code>##

my $sth = $db->prepare(
   'UPDATE counters SET pagecounter = pagecounter + 1 WHERE pagename = ?');
$sth->execute($pagename);

##</code><code>##

my ($counter) = $db->selectrow_array('SELECT pagecounter FROM counters WHERE pagename = ?', undef, $pagename);

##</code><code>##

sub increase_pagecount_for {
   my ($db, $pagename) = @_;

   eval { # Just ignore errors if the record already exists
      $db->do('INSERT INTO counters (pagename, pagecounter) VALUES (?, 0)',
         undef, $pagename);
   };
   $db->do(
       'UPDATE counters SET pagecounter = pagecounter + 1 '
        . ' WHERE pagename = ?',
      undef, $pagename
   );
   my ($counter) = $db->selectrow_array(
      'SELECT pagecounter FROM counters WHERE pagename = ?',
      undef, $pagename
   );

   return $counter;
} ## end sub increase_pagecount_for