yii2判断数据库字段is null，如下：
相关教程推荐：yii框架
示例：
$query = new Query;
$query->select('ID, City,State,StudentName')
->from('student')
->where(['IsActive' => 1])
->andWhere(['not', ['City' => null]])
->andWhere(['not', ['State' => null]])
->orderBy(['rand()' => SORT_DESC])
->limit(10);更多编程相关内容，请关注Gxlcms编程入门栏目！