title: Cant submit my drupal form; it has an update query
body: <p>I am making a custom module which also enables an edit page to edit the special node .
  Below the feilds there is an update button ; so i have made a form for all this and
  following is my hook_submit for the form</p>
  
  <pre><code>      function game_week_edit_form_submit($form_id, &amp;$form_state) 
         {
  $result = db_query("UPDATE {game_week} SET 
    start_time = %s, open_time = %s , close_time = %s WHERE game_week_id= %d", 
          $form_state['values']['start_time'], $form_state['values']['open_time'],   
             $form_state['values']['close_time'],$form_state['values']['game_week_id']);  
     }
  </code></pre>