how to improve Performance of zend paginator pagination

Question

I have made an AJAX based Zend_Paginator, however I dont want to fetch all records from the query. For instance; I have ten items per page so I want that my query fetch only 10 rows.

Here is the code:-

$request = $this->getRequest();
$phone_service_id  =  $request->getParam("id");
$registry = Zend_Registry::getInstance();  
$DB = $registry['DB'];
$sql ="SELECT caller_name,call_number,call_start_time,call_duration,call_direction
       FROM CALL_LOG
       WHERE phone_service_id = $phone_service_id";
$result = $DB->fetchAll($sql);
$page=$this->_getParam('page',1);
$paginator = Zend_Paginator::factory($result);
$paginator->setItemCountPerPage(10);
$paginator->setCurrentPageNumber($page);
$this->view->paginator=$paginator;
$page = $paginator->getCurrentPageNumber();
$perPage = $paginator->getItemCountPerPage();
$total = $paginator->getTotalItemCount();
$A = ($page - 1) * $perPage + 1;
$B = min($A + $perPage - 1, $total);
$C = $total;
$this->view->assign('url', $request->getBaseURL());
$this->view->assign('total',$total );
$this->view->assign('page',$page );
$this->view->assign('A',$A );
$this->view->assign('B',$B );
$this->view->assign('C',$C );

How can I limit my query so it extract first the 10 rows for the first page and if its second page so it only extract from 11 to 20 rows and so on?

Answer 1

You can do something like this

$select = $DB->select()
             ->from('CALL_LOG', array('caller_name','call_number','call_start_time','call_duration','call_direction'))
             ->where('phone_service_id = ?', $phone_service_id);
$adapter = new Zend_Paginator_Adapter_DbSelect($select);
$paginator = new Zend_Paginator($adapter);

and then rest of your code.