GraphQL - Queries
You want to fetch a list of users with their id, name, and each user's posts with post title and comments count. Which GraphQL query correctly expresses this?
You want to fetch a list of users with their id, name, and each user's posts with post title and comments count. Which GraphQL query correctly expresses this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand nested fields and syntax
The query must request 'users' with subfields 'id', 'name', and nested 'posts' with 'title' and 'commentsCount'. In single-line GraphQL queries, commas are required to separate field names, and trailing commas are invalid.Step 2: Evaluate syntax correctness
'query { users { id, name, posts { title, commentsCount } } }' correctly separates all fields with commas at every level without trailing commas. The others have errors: missing commas between some fields combined with trailing comma; missing commas between top-level fields; or missing all commas between fields.Final Answer:
query { users { id, name, posts { title, commentsCount } } } -> Option BQuick Check:
Correct nesting and commas between fields = query { users { id, name, posts { title, commentsCount } } } [OK]
Quick Trick: Nest fields inside braces without trailing commas [OK]
Common Mistakes:
- Adding trailing commas inside nested fields
- Misplacing commas between fields
- Incorrect nesting of fields
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