什么是yii2中的等价查询

Question

由于在yii2 searchmodel中使用findbysql时搜索过滤不起作用，所以我想在Yii2中写一个等效的“SELECT * FROM challan WHERE id IN (SELECT MAX(id) FROM challan GROUP BY sid)”查询

Answer 1

$query->andWhere(new Expression('id IN (SELECT MAX(id) FROM challan GROUP BY sid)'));

Answer 2

我花了很多时间后才找到答案，而这里是

Challan::find()->Where(['challan.id' => Challan::find()->select(['MAX(id)'])->groupBy('sid')]);