What is a GraphQL query?
Blog post from Postman
GraphQL queries are read operations used to request specific data from a GraphQL server, allowing clients to specify exactly what they need, unlike REST APIs that return a predefined data set. GraphQL operations are categorized into queries, which retrieve data, and mutations, which alter data. Queries feature precise data fetching, hierarchical structure, and a strongly typed system, ensuring predictable results. The blog post emphasizes the power and versatility of GraphQL queries, providing a practical example using Postman's GraphQL client. It highlights the advantages of GraphQL queries, including efficient data retrieval, flexibility, and improved API reliability, and guides users on executing queries through methods like Postman's interactive query builder. By enabling precise data requests, GraphQL queries offer enhanced performance, reduced bandwidth usage, and a more seamless development experience, making them a valuable tool for API interactions.
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