从会议室数据库中分离数据的最佳方法是什么？

Question

我将数据存储在android的本地会议室数据库中。

[
    {
    id:1
    name: Dhiraj kumar
    phone:1234567
    email:test@test.com
    school: DAV
    },
    {
    id:2
    name: Niraj kumar
    Phone:2453465345
    email:test@test.com
    school: DAV
    },
    {
    Id:3
    name: some name
    Phone:134245
    email:test@test.com
    school: DAV
    },
    {
    Id:4
    name: Sumanth
    Phone:134245
    email:test@test.com
    school: summer vila
    },
    {
    Id:3
    name:Raghav
    Phone:134245
    email:test@test.com
    school: summer vila
    }
    ]

  

我想获取所有学生名单中的学校名单

ex: 


     [{
        "school": DAV
        "students":
        [
         {
                id:1
                name: Dhiraj kumar
                phone:1234567
                email:test@test.com
                school: DAV
                },
                {
                id:2
                name: Niraj kumar
                Phone:2453465345
                email:test@test.com
                school: DAV
                },
                {
                Id:3
                name: some name
                Phone:134245
                email:test@test.com
                school: DAV
                }
        ]
},
  {
    "school":summer villa
    "students"[
 {
        Id:4
        name: Sumanth
        Phone:134245
        email:test@test.com
        school: summer vila
        },
        {
        Id:3
        name:Raghav
        Phone:134245
        email:test@test.com
        school: summer vila
        }
]
}      
        ]

当前，我正在获取不同的学校名称，然后运行循环，然后获取学校为schoolName的学生名单。

但是我想知道，如何使用查询获取数据？有可能吗，或者分离数据的最佳方法是什么？