If you need in Yii (1), please update your components array in main.php like this
'components'=>array(
#/*
'fixture'=>array(
'class'=>'system.test.CDbFixtureManager',
),
#*/
'db'=>array(
'connectionString' => 'mysql:host=localhost;dbname=intakes_manager_test',
'emulatePrepare' => true,
'username' => 'root',
'password' => 'root',
'charset' => 'utf8',
'enableProfiling'=>true,
'enableParamLogging'=>true,
),
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array(
array(
'class'=>'CFileLogRoute',
'levels'=>'error,trace,info,warning',
//'filter'=>'CLogFilter',
'categories'=>'system.db.*',
'logFile'=>'sql.log'
)
)
),
),
For the same in Yii 2, do like below
'components' => [
'log' => [
'targets' => [
'file' => [
'class' => 'yii\log\FileTarget',
],
'db' => [
'class' => 'yii\log\DbTarget',
],
],
],
to know more about yii 2 logging see doc here