How would you write a mutation to update a user's email and also fetch the updated user's id and email, using variables $id and $email?

hard📝 Application Q9 of 15

GraphQL - Mutations

How would you write a mutation to update a user's email and also fetch the updated user's id and email, using variables $id and $email?

Amutation { updateUser(id: $id, email: $email) { id email } }

Bmutation UpdateUser($id: ID!, $email: String!) { updateUser(id: $id, email: $email) { id email } }

Cmutation UpdateUser { updateUser(id: $id, email: $email) { id email } }

Dmutation UpdateUser($id, $email) { updateUser(id: $id, email: $email) { id email } }

Step-by-Step Solution

Solution:

Step 1: Define mutation with variables and types
mutation UpdateUser($id: ID!, $email: String!) { updateUser(id: $id, email: $email) { id email } } correctly declares variables with types ID! and String!.
Step 2: Use variables in mutation call and request fields
mutation UpdateUser($id: ID!, $email: String!) { updateUser(id: $id, email: $email) { id email } } uses variables in arguments and requests id and email fields.
Final Answer:
mutation UpdateUser($id: ID!, $email: String!) { updateUser(id: $id, email: $email) { id email } } -> Option B
Quick Check:
Correct variable declaration and usage = mutation UpdateUser($id: ID!, $email: String!) { updateUser(id: $id, email: $email) { id email } } [OK]

Quick Trick: Declare variables with types in mutation header [OK]

Common Mistakes:

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