where
use app\models\User;
$data = User::find()->where(['>','id',3])->all();//获取id>3的数据
$data = User::find()->where(['between','id',2,5])->all();//获取5>=id>=2的数据
$data = User::find()->where(['like','title','如何'])->all();//title模糊查询数据
$data = User::findOne(5);//查询id为5的数据
$data = User::find()->where(['id' => 1])->one();//查询id为1的数据
$data = User::findAll([1,2,3]);//查询id为1,2,3的三条数据
查询
//查询数据
$query = new \yii\db\Query();
$res = $query->from('lg_shop_info')->where(['id' => 18])->one();
$res = $query->select('id,shop_name')->from('lg_shop_info')->where(['id'=> 18])->one();