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GraphQL query

A GraphQL query is a read-only operation in which a client specifies the fields and data it wants returned by a GraphQL service.

How 2 Manning books explain it

Building Web APIs with ASP.NET Core

A GraphQL query is a client-specified operation that selects the fields and data to retrieve from a GraphQL API.

How it is used
Uses client-selected fields and arguments to retrieve precisely shaped data from a GraphQL API.
How deep it goes
Demonstrates field selection, relationships, filtering, ordering, limits, execution, and response verification, but defers formal syntax details.
Examples
Uses board-game listings, related domains and mechanics, name filters, sorted results, and an Axis & Allies update workflow.
What you can do after
Apply it via BananaCakePop to retrieve selected board-game data, verify responses, and prepare data-changing mutations.

Read how Building Web APIs with ASP.NET Core explains GraphQL query →

Contract Testing in Action

A GraphQL query is a client-specified request describing the fields and data structure to retrieve from a GraphQL API.

How it is used
Retrieves consumer-selected fields from a GraphQL API through one structured request.
How deep it goes
Explains selection sets, operation names, variables, schema validation, resolvers, and contract expectations, but not query execution internals.
Examples
Uses movie-list and single-movie queries, movie landing-page data, Apollo Client definitions, and Pact GraphQL interactions.
What you can do after
Apply it via Apollo Client to request selected fields, pass variables, handle errors, and verify response contracts.

Read how Contract Testing in Action explains GraphQL query →

Related concepts

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