本文介绍了如何在yii2中计数和分组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！
问题描述
我想使用 yii2 生成以下查询:
I would like to generate following query using yii2:
SELECT COUNT(*) AS cnt FROM Lead WHERE allowed = 1 GROUP BY prompt_location_id,lead_type_id
我试过了:
$leadsCount = Lead::find()
->where('approved = 1')
->groupBy(['promoter_location_id', 'lead_type_id'])
->count();
生成此查询的内容:
SELECT COUNT(*) FROM (SELECT * FROM `lead` WHERE approved = 1 GROUP BY `promoter_location_id`, `lead_type_id`) `c`
在 yii 1.x 中，我会执行以下操作:
In yii 1.x I would've done the following:
$criteria = new CDbCriteria();
$criteria->select = 'COUNT(*) AS cnt';
$criteria->group = array('promoter_location_id', 'lead_type_id');
谢谢！
推荐答案
解决方案:
$leadsCount = Lead::find()
->select(['COUNT(*) AS cnt'])
->where('approved = 1')
->groupBy(['promoter_location_id', 'lead_type_id'])
->all();
并将 public $cnt 添加到模型中，在我的示例中为 Lead.
and add public $cnt to the model, in my case Lead.
正如 Kshitiz 所说，你也可以只使用 yiidbQuery::createCommand().
As Kshitiz also stated, you could also just use yiidbQuery::createCommand().
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