Queries

Code

query GetBooks($limit: Int = 10) {
  books(limit: $limit) {
    id
    title
    author {
      name
    }
  }
}

query GetBook($id: ID!) {
  book(id: $id) {
    title
    pages
  }
}

Explanation

A query operation reads data by selecting fields from the root Query type, nesting as deeply as the schema allows. Variables declared in the header are passed alongside the document in a separate JSON payload. The client receives exactly the fields it asks for, no more and no less, which prevents over-fetching.

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