Bug with count and Aliases.

[MichelDiz]

If you suspect this could be a bug, follow the template.

• What version of Dgraph are you using?
  Dgraph v1.1 RC 1

• Have you tried reproducing the issue with latest release?
  yes

• What is the hardware spec (RAM, OS)?
  Windows

• Steps to reproduce the issue (command/config used to run Dgraph).
  Just run this query below.

curl localhost:8080/query -H "Content-Type: application/graphql+-" -XPOST -d '{
  nodeCount(func: has(<director.film>)) {
    nodeCount: count(uid)
    name@en
  }
}'

It happens with curl, in Ratel and so on.

• Expected behaviour and actual result.

The predicate name in the right place instead of the "count" alias.

obs. Changing the positions we can have the desired result

{
  nodeCount(func: has(<director.film>)) {
    #nodeCount: count(uid)
    name@en
    nodeCount: count(uid)
  }
}

[pawanrawal]

I was able to reproduce the issue and am looking into a fix now.

[pawanrawal]

Here is a sample query and response which demonstrates the problem.

Query
---
{
  nodeCount(func: has(<director.film>), first: 10) {
    randomCount: count(uid)
    name@en
  }
}

Response
---
{
  "extensions": {
    "server_latency": {
      "parsing_ns": 7037,
      "processing_ns": 62411423,
      "encoding_ns": 142494
    },
    "txn": {
      "start_ts": 23369555
    }
  },
  "data": {
    "nodeCount": [
      {
        "randomCount": 10
      },
      {
        "randomCount": "Janis Cole"
      },
      {
        "randomCount": "Francisco Payó González"
      },
      {
        "randomCount": "Jim Powers"
      },
      {
        "randomCount": "Gulzar"
      },
      {
        "randomCount": "H.W. Poschauk"
      },
      {
        "randomCount": "Robert Cicchini"
      },
      {
        "randomCount": "Niki Karimi"
      },
      {
        "randomCount": "Leetal Platt"
      },
      {
        "randomCount": "Costas Sfikas"
      },
      {
        "randomCount": "Chris Chan Lee"
      }
    ]
  }
}

Notice how instead of the name, randomCount is returned as the key.