Why GraphQL exists - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a GraphQL query that fetches a user's name.

GraphQL

query { user(id: "1") { [1] } }

Drag options to blanks, or click blank then click option'

Apassword

Bage

Cemail

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing fields that are not related to the user's name.

The name field is requested to get the user's name in the query.

2fill in blank

medium

Complete the code to request only the needed fields in a GraphQL query.

GraphQL

query { product(id: "5") { id [1] } }

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Aprice

Bdescription

Cstock

Dall

Attempts:

3 left

💡 Hint

Common Mistakes

Requesting all fields at once, which GraphQL does not support with 'all'.

GraphQL lets you request only the fields you need, like price here.

3fill in blank

hard

Fix the error in the GraphQL query to fetch a user's email.

GraphQL

query { user(id: "2") { [1] } }

Drag options to blanks, or click blank then click option'

Aemail

Bemails

Cmail

DuserEmail

Attempts:

3 left

💡 Hint

Common Mistakes

Using plural or incorrect field names like 'emails' or 'mail'.

The correct field name to get the user's email is email.

4fill in blank

hard

Fill both blanks to complete a GraphQL mutation that updates a user's name.

GraphQL

mutation { updateUser(id: "3", input: { name: [1] }) { [2] } }

Drag options to blanks, or click blank then click option'

A"Alice"

Bname

Cid

D"Bob"

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the new name or requesting wrong fields in the response.

The mutation sets the user's name to "Alice" and requests the updated name field in the response.

5fill in blank

hard

Fill all three blanks to complete a GraphQL query fetching a post's title and author's name.

GraphQL

query { post(id: [1]) { [2] author { [3] } } }

Drag options to blanks, or click blank then click option'

A"10"

Btitle

Cname

Dcontent

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong id format or requesting wrong fields like 'content' instead of 'title'.

The query fetches the post with id "10", requests its title, and the name of the author.