DA0-002 Data Acquisition and Preparation Practice Question
A data analyst needs to retrieve all unique job titles from an employees table. Which SQL keyword should be used in the SELECT clause?
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
✓
DISTINCT
DISTINCT removes duplicate rows from the result set, returning only unique values. In this case, SELECT DISTINCT job_title would return each job title only once.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
UNIQUE
Why it's wrong here
UNIQUE is not a SQL keyword for this purpose; it is used in constraints.
- ✗
REMOVE DUPLICATES
Why it's wrong here
This is not valid SQL syntax.
- ✓
DISTINCT
Why this is correct
Correct. DISTINCT filters out duplicate rows.
- ✗
FILTER
Why it's wrong here
FILTER is not a standard SQL keyword; filtering is done with WHERE.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA 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 DA0-002 exam.