GraphQL - ResolversIn GraphQL, what happens if you omit a resolver function for a field in your schema?AGraphQL will return null for that field regardless of the data.BThe query will fail with an error indicating a missing resolver.CThe default resolver automatically fetches the field value from the parent object.DThe server will generate a random value for the field.Check Answer
Step-by-Step SolutionSolution:Step 1: Understand default resolver behaviorGraphQL uses a default resolver that looks up the field name on the parent object if no custom resolver is provided.Step 2: Consider the effect of omitting a resolverWithout a custom resolver, the default resolver returns the corresponding property value from the parent data.Final Answer:The default resolver automatically fetches the field value from the parent object. -> Option CQuick Check:Default resolver returns parent field value [OK]Quick Trick: Default resolver returns parent field value [OK]Common Mistakes:Assuming missing resolver causes query failureBelieving GraphQL returns null by defaultThinking server generates random data
Master "Resolvers" in GraphQL9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepVisualTryChallengeProjectRecallTime
More GraphQL Quizzes GraphQL Basics and Philosophy - Why GraphQL exists - Quiz 9hard GraphQL Basics and Philosophy - Over-fetching and under-fetching problems - Quiz 9hard GraphQL Basics and Philosophy - Over-fetching and under-fetching problems - Quiz 10hard Queries - Fragments for reusable selections - Quiz 1easy Queries - Basic query syntax - Quiz 13medium Queries - Nested field queries - Quiz 8hard Resolvers - Resolver chains - Quiz 4medium Resolvers - Parent (root) argument - Quiz 4medium Schema Definition Language (SDL) - List types - Quiz 11easy Type Relationships - Why relationships model real data - Quiz 4medium