DA0-002 Data Acquisition and Preparation Practice Question
A data analyst needs to retrieve only unique job titles from the '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
The DISTINCT keyword removes duplicate rows from the result set, returning only unique values.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TOP
Why it's wrong here
TOP limits the number of rows returned, but does not remove duplicates.
- ✓
DISTINCT
Why this is correct
DISTINCT returns unique rows.
- ✗
UNIQUE
Why it's wrong here
UNIQUE is not a standard SQL keyword for removing duplicates in SELECT.
- ✗
FILTER
Why it's wrong here
FILTER is not a SQL keyword for removing duplicates.
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Written by Johnson Ajibi, MSc IT Security
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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.