[Solved] Find the mistake in this mutation using input type:mutation updateUser($data: UserInput!) { updateUser(data) { id name } } | GraphQL

GraphQL - Schema Definition Language (SDL)

Find the mistake in this mutation using input type:

mutation updateUser($data: UserInput!) { updateUser(data) { id name } }

AInput types cannot be used in mutations

BThe variable declaration is missing the exclamation mark

CThe argument 'data' must be passed as 'data: $data' inside the mutation body

DThe mutation name must be 'updateUserMutation'

Step-by-Step Solution

Solution:

Step 1: Check variable usage in mutation body
Variables must be passed as named arguments with colon, e.g. data: $data.
Step 2: Verify other options
Variable declaration has exclamation mark, input types are valid in mutations, mutation name can be arbitrary.
Final Answer:
The argument 'data' must be passed as 'data: $data' inside the mutation body -> Option C
Quick Check:
Pass variables as named args with colon [OK]

Quick Trick: Use 'argName: $variable' syntax in mutation body [OK]

Common Mistakes:

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