Can you do graphql groupby with nested key

Questions and Answers
1

trying to use graphql group by and get nested details of a key.

for example lets say my schema is this:

post {
  _id
  title
  isPublished
}

user {
  _id
  username
  name
  [posts]
}

graphql query:

{
  postsConnection(where: {isPublished: true}){
    groupBy{
      author{
        key
        connection{
          aggregate{
            count
          }
        }
      }
    }
  }
}

and results:

{
  "data": {
    "postsConnection": {
      "groupBy": {
        "author": [
          {
            "key": "5c9136976238de2cc029b5d3",
            "connection": {
              "aggregate": {
                "count": 5
              }
            }
          },
          {
            "key": "5c99d5d5fcf70010b75c07d5",
            "connection": {
              "aggregate": {
                "count": 3
              }
            }
          }
        ]
      }
    }
  }
}

but i would like instead of a key id to get the name of the author (author.name)

can it be done with strapi?