Multiple labels with editor

Here is what I currently have:

if ( !isset($_POST['action']) ) {

   $data['projectList'] = $db->query( 'select' )
  ->distinct( true )
  ->table( 'projects' )
  ->get( 'userprojects.projectid as value' )
  ->get( 'projects.projectname as label' )
  ->join( 'userprojects', 'userprojects.projectid = projects.projectid' )
  ->join( 'clients', 'clients.clientid = projects.clientid' )
  ->where( 'userprojects.userid', $userid )
  ->exec()
  ->fetchAll();

This works fine. This is what I really want though:

if ( !isset($_POST['action']) ) {

   $data['projectList'] = $db->query( 'select' )
  ->distinct( true )
  ->table( 'projects' )
  ->get( 'userprojects.projectid as value' )
  ->get( 'projects.projectname - clients.clientname as label' ) <<<<<<<<<<<<<<<<<<<<<<<<
  ->join( 'userprojects', 'userprojects.projectid = projects.projectid' )
  ->join( 'clients', 'clients.clientid = projects.clientid' )
  ->where( 'userprojects.userid', $userid )
  ->exec()
  ->fetchAll();

So basically two labels but only display them as one. I tried to do something like this:

    $data['projectList'] = array();
    while ( $row = $data->fetch() ) {
        $data['projectList'][] = array(
            "value" => $row['userprojects.projectid'],
            "label" => $row['projects.projectname'].' '.$row['clients.clientname']
        );
    }

But I couldn't get it to work correctly. Any help would be greatly appreciated.