How to do IS NULL and IS NOT NULL with Yii 2 ActiveRecord?

Question

I have a table which has a field `activated_at` timestamp NULL DEFAULT NULL, which means that it can contain a timestamp or it can be null and it\'s

Answer 1

// ...WHERE (`status` = 10) AND (`type` IS NULL) AND (`info` IS NOT NULL)
$query->where([
    'status' => 10,
    'type' => null,
])
->andWhere(['not', ['info' => null]]);