DS0-001 Database Structures And SQL Practice Question
Which SQL keyword is used to eliminate duplicate values from a query result set?
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 is used in a SELECT statement to return 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.
- ✗
UNIQUE
Why it's wrong here
UNIQUE is a constraint, not a query keyword.
- ✗
GROUP BY
Why it's wrong here
GROUP BY aggregates rows but requires an aggregate function to be useful.
- ✗
FILTER
Why it's wrong here
FILTER is not a standard SQL keyword for query results.
- ✓
DISTINCT
Why this is correct
DISTINCT removes duplicates from the output.
About these practice questions
Courseiva writes every DS0-001 question from scratch — 216 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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 CompTIA exam blueprint
This DS0-001 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 DS0-001 exam.