如何将Slate查询的返回格式从列更改为行？

query {
  students {
    name
    grades {
      subject
      score
    }
  }
}

{
  "data": {
    "students": [
      {
        "name": "Alice",
        "grades": [
          {
            "subject": "Math",
            "score": 90
          },
          {
            "subject": "Science",
            "score": 85
          }
        ]
      },
      {
        "name": "Bob",
        "grades": [
          {
            "subject": "Math",
            "score": 95
          },
          {
            "subject": "Science",
            "score": 80
          }
        ]
      }
    ]
  }
}

query {
  students {
    name
    grades {
      subject
      score
    }
    pivotedGrades: grades @pivot(keyField: "subject", valueField: "score")
  }
}

{
  "data": {
    "students": [
      {
        "name": "Alice",
        "pivotedGrades": {
          "Math": 90,
          "Science": 85
        }
      },
      {
        "name": "Bob",
        "pivotedGrades": {
          "Math": 95,
          "Science": 80
        }
      }
    ]
  }
}