Query join mongodb

queries join

db.sales.aggregate([
{
  $lookup : {
  	from: "services",
  	localField: "_id",
  	foreignField: "saleId",
  	as:"servicesOfSale"
  }
},
{
	$match : {
	"user.cpf" : "00000000"
	}
}
])


//and the inverse

db.services.aggregate([
{
  $lookup : {
  	from: "sales",
  	localField: "saleId",
  	foreignField:"_id",
  	as:"saleOfService"
  }
},
{
	$match : {
	"saleOfService.user.cpf" : "000000000"
	}
}
])