GraphQL–The query has non-mergable fields

I constructed the following query in GraphQL playground:

	# Write your query or mutation here
	{
	product(id:88466){
	id
	name
	price
	}
	product(name:"XBOX"){
	id
	name
	price
	}
	}

view raw example.gql hosted with ❤ by GitHub

In this query I try combine 2 calls, one to fetch a product by id and another one where I try to fetch a product by name.

However when I tried to execute this query it resulted in the following error message:

The query has non-mergable fields

The problem is that GraphQL tries to merge the results in one product result object which does not work.

	{
	"data": {
	"product": [
	{
	"id": "88466",
	"name": "xbox",
	"price": "200$"
	}
	]
	}
	}

view raw failingresult.json hosted with ❤ by GitHub

To have the behavior I want I need to specify an alias for every query:

	# Write your query or mutation here
	{
	productById:product(id:88466){
	id
	name
	price
	}
	productByName:product(name:"XBOX"){
	id
	name
	price
	}
	}

view raw examplefixed.gql hosted with ❤ by GitHub

Now when I execute the query, the query results are put in their own object:

	{
	"data": {
	"productById": [
	{
	"id": "88466",
	"name": "xbox",
	"price": "200$"
	}
	],
	"productByName": [
	{
	"id": "88466",
	"name": "xbox",
	"price": "200$"
	}
	]
	}
	}

view raw successresult.json hosted with ❤ by GitHub