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We’re overhauling Dgraph’s docs to make them clearer and more approachable. If you notice any issues during this transition or have suggestions, please let us know.
The following names are reserved and can’t be used to define any other identifiers:
  • Int
  • Float
  • Boolean
  • String
  • DateTime
  • ID
  • uid
  • Subscription
  • as (case-insensitive)
  • Query
  • Mutation
  • Point
  • PointList
  • Polygon
  • MultiPolygon
  • Aggregate (as a suffix of any identifier name)
For each type, Dgraph generates a number of GraphQL types needed to operate the GraphQL API, these generated type names also can’t be present in the input schema. For example, for a type Author, Dgraph generates:
  • AuthorFilter
  • AuthorOrderable
  • AuthorOrder
  • AuthorRef
  • AddAuthorInput
  • UpdateAuthorInput
  • AuthorPatch
  • AddAuthorPayload
  • DeleteAuthorPayload
  • UpdateAuthorPayload
  • AuthorAggregateResult
Mutations
  • addAuthor
  • updateAuthor
  • deleteAuthor
Queries
  • getAuthor
  • queryAuthor
  • aggregateAuthor
Thus if Author is present in the input schema, all of those become reserved type names.