allow empty selections

At a glance

• Identifier: #674
• Stage: RFC 0 / Strawman
• Champion: @kassens
• Latest activity: Advanced to RFC 0 on 2020-01-22
• Spec PR: https://github.com/graphql/graphql-spec/pull/674

Spec PR description

Sometimes, product code might only be interested in the existence of an object. Currently, this forces a workaround of either querying __typename or adding a bool field like has_thing.

It seems natural and not too confusing to allow empty selections:

query {
  event {
    location {}
  }
}

The response should either return null or an empty object for location.

(The spec changes are incomplete.)