SALESFORCE-PD1 Developer Fundamentals Practice Question
A developer needs to retrieve Account records along with their associated Contacts in a single query. Which query syntax is correct?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SELECT Id, Name, (SELECT Id, LastName FROM Contacts) FROM Account
Parent-to-child subqueries use plural child relationship names enclosed in parentheses inside the SELECT clause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SELECT Id, Name, CONCAT(Contacts) FROM Account
Why it's wrong here
CONCAT is not a valid SOQL function for relationship queries.
- ✗
SELECT Id, Name, (SELECT Id, LastName FROM Contact) FROM Account
Why it's wrong here
The subquery must use the plural child relationship name, which is 'Contacts'.
- ✗
SELECT Id, Name, Contacts__r FROM Account
Why it's wrong here
Child relationships must be queried as a subquery list.
- ✓
SELECT Id, Name, (SELECT Id, LastName FROM Contacts) FROM Account
Why this is correct
This is the correct syntax for a child subquery in SOQL.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SALESFORCE-PD1 exam.