Grouping csv by name

[terrydidi]

Thanks for the reply.

My expected result is like

  {
    "name": "john",
    "email": "example.com",
    "items": [
      {
        "phone": "123",
        "info": {
             "date": "26/11/18",
        }
      },
      {
        "phone": "123456",
        "info": {
             "date": "12/08/18",
        }
      },
    ]
  }

The other value will insert according to the name. I will try to refer your method.
Btw, based on my first code will not group yet, is it possible to transform the top-level array [] to object {}?Or just remove the top-level [].