query MyQuery {
  jobs_aggregate(where: {created_at: {_gte: "2020-11-05"}}) {
    aggregate {
      count
      sum {
        totalVacancies
      }
    }
    nodes {
      title
      created_at
    }
  }
}

query MyQuery {
  jobs_aggregate(where: {
    _and : [
    {
      created_at:{
        _lte : "2020-11-24"
      }
    },
      {
        created_at:{
          _gte : "2020-10-11"
        }
      }
  ]
  }) {
    aggregate {
      count
      sum {
        totalVacancies
      }
    }
    nodes{
      created_at
    }
  }
}

query($dateL:timestamptz, $dateU:timestamptz){
  jobs(where: {
    _and : [
    {
      created_at:{
        _lte : $dateU 
      }
    },
      {
        created_at:{
          _gte : $dateL
        }
      }
  ]
  }, 
    order_by: {created_at: asc}) {
    created_at
  }
}


{
  "dateL" : null ,
  "dateU" : "2020-11-23"
}