How to get raw sql query in yii or yii2 framework

If you have used the query builder in yii 2.0.8 framework then to get the raw sql generated use the below statement.

$query->andFilterWhere([‘like’, ‘username’, $this->username])
->andFilterWhere([‘like’, ’email_id’, $this->email])
->andFilterWhere([‘registration_date’ => $this->register_date]);
// This is echo the raw query generated
var_dump($query->createCommand()->getRawSql());