[Solved] Identify the error in this input type definition:input UserInput { id: ID! name: String age: Int! } — Ans: Syntax is correct; no error | GraphQL

GraphQL - Schema Definition Language (SDL)

Identify the error in this input type definition:

input UserInput { id: ID! name: String age: Int! }

ASyntax is correct; no error

BInput types cannot have non-null fields

CMissing commas between fields

DField names must be lowercase

Step-by-Step Solution

Solution:

Step 1: Review GraphQL input type syntax rules
Input types list fields with their types separated by spaces or new lines; commas are not required.
Step 2: Check each option against syntax
Input types cannot have non-null fields is false; non-null fields are allowed. Field names must be lowercase is false; field names can be camelCase or lowercase. Missing commas between fields is false; commas are optional. Syntax is correct; no error is true; the syntax is valid.
Final Answer:
Syntax is correct; no error -> Option A
Quick Check:
Input fields separated by spaces, commas optional [OK]

Quick Trick: Commas are optional between fields in input types [OK]

Common Mistakes:

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