### SQL ###
        my $sql = "SELECT boards.id as board_id, threads.id as thread_id, messages.position as position, boards.name as board_name, threads.title as thread_title, messages.message_raw as message_raw";
        $sql .=   " FROM $PBoard::Config::DbTables{boards} AS boards,";
        $sql .=   " $PBoard::Config::DbTables{threads} as threads,";
        $sql .=   " $PBoard::Config::DbTables{messages} as messages,";
        $sql .=   " $PBoard::Config::DbTables{user_groups} as user_groups";
        $sql .=   " WHERE messages.thread = threads.id AND threads.boardID = boards.id";        
        $sql .=   " AND messages.status != 'deleted' AND threads.status != 'onhold' AND threads.status != 'deleted'";
        $sql .=   " AND boards.groupRequired <= 2 AND user_groups.level = 'user'";
        $sql .=   " AND boards.id = ?" if $board_id;
        $sql .=   " AND threads.id = ?" if $thread_id;
        $sql .=   " AND messages.authorId = ?" if $user_id;
        $sql .=   " AND ((UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(messages.posttime)) <= (? * 24 * 60 * 60))" if lc($action) eq lc('lastMessagesDays');
        $sql .=   " AND messages.position = '1'" if lc($filter) eq 'no_replies';
        $sql .=   " ORDER BY messages.posttime DESC";
        $sql .=   " LIMIT ?";

        my @placeholders;
        push @placeholders, $board_id       if $board_id;
        push @placeholders, $thread_id      if $thread_id;
        push @placeholders, $user_id        if $user_id;
        push @placeholders, $last_entries   if lc($action) eq lc('lastMessagesDays');
        if (lc($action) eq lc('lastMessagesDays'))        { push @placeholders, $max_entries; } # if
        elsif (lc($action) eq lc('lastMessagesNumbers'))  { push @placeholders, $last_entries; } # if
        else                                              { push @placeholders, $max_entries; } # ifelse

        if ($debug) {
                print "\n\n$sql\n\n";
                foreach my $item (@placeholders) { print "-->".$item."\n";      
                } # foreach
        } # if

### DB ###
        my $storage = PBoard::Storage->new( { dbh => undef } );
        my $poard = PBoard->new( { cgi => $cgi, storage => $storage } );
        my $dbh = PBoard::DB::ConnectToDB( $poard );
        $storage->set_dbh( $dbh );
        my $sth = &PBoard::DB::FireSql( $poard, $sql, @placeholders );

### Feed erzeugen ###

        # thread_id prüfen
        $thread_id = 0 if ($thread_id !~ m|^[0-9]*$|) || ($thread_id < 0);
        $board_id = 0 if $thread_id;