onmotion/yii2 select only relation fields.php

## yii2 select only relation fields.php
<?php
    $result = Order::find()->select(['price', 'firstname', 'lastname'])->joinWith('user')->createCommand()->queryAll();

    Array
    (
      [client_id] => f43e28ff
      [client_name] => name
    )
	<?php
	$result = Order::find()->select(['price', 'firstname', 'lastname'])->joinWith('user')->createCommand()->queryAll();

	Array
	(
	[client_id] => f43e28ff
	[client_name] => name
	)