Cant submit my drupal form; it has an update query

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 开发者_StackOverflow中文版i have made a form for all this and following is my hook_submit for the form

      function game_week_edit_form_submit($form_id, &$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']);  
   }

You need to wrap your strings in the query with quotes:

function game_week_edit_form_submit($form_id, &$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']);
}

If that's not it, look in the recent log entries for any db fails - admin/reports/dblog