yii 显示mysql执行语句

‘db‘=>array(
   ‘connectionString‘ => ‘mysql:host=localhost;dbname=yii_computer‘,
   ‘emulatePrepare‘ => true,
   ‘username‘ => ‘root‘,
   ‘password‘ => ‘‘,
   ‘charset‘ => ‘utf8‘,
   ‘tablePrefix‘ => ‘yii_computer_‘,
   //让捆绑的变量显示出来
   ‘enableProfiling‘ => YII_DEBUG,
   ‘enableParamLogging‘ =>YII_DEBUG,
  ),

‘log‘=>array(
   ‘class‘=>‘CLogRouter‘,
   ‘routes‘=>array(
    array(
     ‘class‘=>‘CFileLogRoute‘,
     ‘levels‘=>‘error, warning‘,
    ),
    // uncomment the following to show log messages on web pages
    
    array(
     ‘class‘=>‘CWebLogRoute‘,

     //添加的内容
     ‘levels‘ =>‘trace‘,
     ‘categories‘ => ‘system.db*‘,
    ),
   
   ),
  ),