GraphQL - Type Relationships
Given the schema:
type Author { id: ID! name: String! books: [Book!]! }
type Book { id: ID! title: String! author: Author! }
What will this query return?
{ author(id: "1") { name books { title } } }
Given the schema: type Author { id: ID! name: String! books: [Book!]! } type Book { id: ID! title: String! author: Author! } What will this query return? { author(id: "1") { name books { title } } }
medium📝 query result Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze query structure
The query requests author name and nested books with their titles, so it expects a list of books.Step 2: Understand schema and query result
Since books is a list, the result will include author name and a list of book titles.Final Answer:
Author name with a list of book titles written by the author -> Option CQuick Check:
Query returns author name and list of book titles [OK]
Quick Trick: Nested fields return lists if schema defines list type [OK]
Common Mistakes:
- Expecting a single book instead of list
- Ignoring nested fields in query
- Assuming missing fields cause errors
Master "Type Relationships" in GraphQL
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