sequelize查询依赖于另一个使用node.js的查询

Question

我有这段代码与php配合得很好

$rs = mysqli_query($conn,"select b.idagence   from booking_btb b where  b.status='booking'  group by b.idagence order by $sort $order  ");

    $rows = array();
    $i=0;
    while($row = mysqli_fetch_object($rs)){
    array_push($rows, $row);

        $idagence =$row->idagence;
    $rsi=mysqli_query($conn,"select sum(montant_a) from booking_btb where idagence=$idagence and etat=0 ");
...
}

Sequelieze是Node.js中数据库ORM映射的绝佳工具， 我需要用NodeJs实现并续集 我开始做，但是我做不到

      stat_agence(req, res) {
    return booking_btb
  .findAll({
            where: {
    status: 'booking'
  },

  attributes: { 
      exclude: ['idsession','idperiod_debut','email','createdAt','updatedAt'],

        include: [

                    {
                        model:agence,
                        attributes: [['username', 'username'],'id']       
                      } ,
            {
                        model:hotel,
                        attributes: [['nom', 'nom'],'idhotel']       
                      } 
                    ],

    group:agence.id
    }
     )
     .then(booking_btb =>{


     for (s=0;s<booking_btb.length;s++)

   {

    idagence=booking_btb[s]['dataValues']['idagence'];


   }
      res.status(200).send(booking_btb)
    }
    )
      .catch(error => res.status(400).send(error));
  },

想在您的帮助下