Given the mutation below, what will be returned?

medium📝 query result Q13 of 15

GraphQL - Mutations

mutation {
  createPost(title: "Hello") {
    id
    title
  }
}

ANo return data because no fields requested

B{ "data": { "createPost": null } }

C{ "data": { "createPost": { "id": 1, "title": "Hello" } } }

DSyntax error: missing fields

Step-by-Step Solution

Solution:

Step 1: Analyze mutation call and requested fields
The mutation calls createPost with title "Hello" and requests id and title fields back.
Step 2: Understand expected return
The server returns the new post's id and title as requested.
Final Answer:
{ "data": { "createPost": { "id": 1, "title": "Hello" } } } -> Option C
Quick Check:
Requested fields returned in data [OK]

Quick Trick: Requested fields inside mutation braces are returned [OK]

Common Mistakes:

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