Question

I have a MySQL database that has over 9000 rows with 10 fields. It was imported from an Excel file so it’s all in one table.

When I run the query, which has already narrowed down the selection, I get 7000 rows back to my Codeigniter view page. The browser freezes for 30 seconds and asks me to kill the page because there has been no response. If I wait, I will see the result show up eventually. I was wondering if there are any ways to improve this?

Answer 1

Are you running your queries inside a loop of some sort?

Agree with pagination answers, use limits and offsets. If you run 10per page thats 700 queries. I would use codeigniter’s pagination lib as follows.

$route['controller/(:num)'] = 'controller/index/$1';

–

public function index($offset=0)
{

   //set a limit of 10 per result
   $limit = 10;

   //query the database
   $q = "SELECT * FROM {table_name} LIMIT={limit} OFFSET={offset} ORDER BY {date} desc";

   //count the results
   $count = count({query results});

   //setup pagination config
   $config = array(
        'base_url' => site_url('controller/'),
        'total_rows' => $count,
        'per_page' => $limit,
        'uri_segment' => 2
   );

   //init the pagigination
   $this->pagination->initialize($config);

   //load the view and pagination data
    $this->load->view('link_to_template', array(
            'pagination'  =>  $this->pagination->create_links(),
            'results'  =>  {query results}
    ));

}