[Solved] Given this schema snippet:type Manager { id: ID! office: Office }type Office {... roomNumber: String }What error occurs if the resolver for office returns an array instead of a single Office object? | GraphQL

GraphQL - Type Relationships

Given this schema snippet:

type Manager { id: ID! office: Office }

type Office { id: ID! roomNumber: String }

What error occurs if the resolver for office returns an array instead of a single Office object?

ANo error, GraphQL automatically converts list to single object

BGraphQL error: Expected single object but got list

CThe query returns null silently

DGraphQL throws a syntax error at schema definition

Step-by-Step Solution

Solution:

Step 1: Understand expected return type
The office field expects a single Office object, not a list.
Step 2: Analyze resolver return mismatch
If the resolver returns a list, GraphQL will raise a runtime error indicating type mismatch.
Final Answer:
GraphQL error: Expected single object but got list -> Option B
Quick Check:
Resolver must match schema type exactly [OK]

Quick Trick: Resolver return type must match schema field type [OK]

Common Mistakes:

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