[SQL FUNDAMENTALS FINAL EXAM] – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST

[SQL FUNDAMENTALS FINAL EXAM] – QUESTIONS AND
ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE |
EXAM PREP | STUDY GUIDE | PRACTICE TEST
1. A database administrator needs to retrieve all employee records from a table named
Employees. Which SQL statement will return every column and every row from the table?

A. SELECT ALL FROM Employees
B. GET * FROM Employees
C. SELECT * FROM Employees
D. DISPLAY Employees

════════════════════
Correct Answer: C. SELECT * FROM Employees

Rationale:

The SELECT * statement retrieves all columns and all rows from the specified table. Option A is
invalid SQL syntax, Option B uses unsupported syntax, and Option D is not a recognized SQL
command. This question tests foundational SQL query knowledge commonly covered in
certification preparation and practice test materials.

════════════════════

2. A company wants to display only the first names and email addresses of customers from
the Customers table. Which SQL statement should be used?

A. SELECT first_name, email FROM Customers
B. DISPLAY first_name, email IN Customers
C. SELECT Customers FROM first_name, email
D. GET first_name AND email FROM Customers

════════════════════
Correct Answer: A. SELECT first_name, email FROM Customers

Rationale:

The SELECT statement allows specific columns to be retrieved from a table. In this case, only
first_name and email are selected from Customers. The remaining options contain invalid SQL
syntax and would not execute successfully in a relational database environment.

,════════════════════

3. A financial analyst needs to retrieve only unique department names from an employee
database. Which SQL keyword should be included in the query?

A. ONLY
B. UNIQUE
C. DISTINCT
D. FILTER

════════════════════
Correct Answer: C. DISTINCT

Rationale:

The DISTINCT keyword removes duplicate values from query results. It is commonly used in
reporting and operational analysis to ensure only unique records are displayed. UNIQUE is
often confused with DISTINCT but is typically used in constraints rather than SELECT queries.

════════════════════

4. Which SQL clause is used to filter records based on a specified condition?

A. ORDER BY
B. GROUP BY
C. WHERE
D. HAVING

════════════════════
Correct Answer: C. WHERE

Rationale:

The WHERE clause filters rows before grouping or ordering occurs. It is one of the most
frequently used clauses in SQL exam questions and real-world database operations. ORDER BY
sorts results, GROUP BY groups records, and HAVING filters grouped data after aggregation.

════════════════════

5. A sales manager wants to list products sorted by price from highest to lowest. Which clause
should be used?

A. ORDER BY price DESC
B. SORT price HIGH
C. GROUP BY price DESC
D. ORDER price REVERSE

,════════════════════
Correct Answer: A. ORDER BY price DESC

Rationale:

ORDER BY sorts query results, while DESC specifies descending order. This is standard SQL
syntax for arranging records from highest to lowest values. The distractors use incorrect or
unsupported SQL terminology.

════════════════════

6. Which SQL function is commonly used to count the number of rows returned by a query?

A. SUM()
B. COUNT()
C. TOTAL()
D. NUMBER()

════════════════════
Correct Answer: B. COUNT()

Rationale:

COUNT() returns the number of rows matching a condition or query result. It is heavily used in
reporting, auditing, and analytics scenarios. SUM() totals numeric values, while TOTAL() and
NUMBER() are not standard SQL aggregate functions.

════════════════════

7. A database developer needs to add a new record into the Orders table. Which SQL
statement should be used?

A. CREATE INTO Orders
B. APPEND Orders
C. ADD ROW Orders
D. INSERT INTO Orders

════════════════════
Correct Answer: D. INSERT INTO Orders

Rationale:

INSERT INTO is the standard SQL command used to add new rows into a table. This operation
is fundamental in transactional systems and certification exam prep materials. The remaining
options are invalid SQL commands.

, ════════════════════

8. Which SQL statement is used to modify existing records in a table?

A. MODIFY
B. UPDATE
C. CHANGE
D. ALTER DATA

════════════════════
Correct Answer: B. UPDATE

Rationale:

UPDATE changes existing data within one or more rows in a table. It is often combined with a
WHERE clause to avoid unintentionally updating all records. ALTER modifies table structure,
not row data.

════════════════════

9. A support technician accidentally omits the WHERE clause in an UPDATE statement. What is
the most likely outcome?

A. Only one row will update
B. The query will fail automatically
C. Every row in the table may be updated
D. The database will shut down

════════════════════
Correct Answer: C. Every row in the table may be updated

Rationale:

Without a WHERE clause, UPDATE affects all rows in the target table. This is a common
operational risk and an important concept in SQL fundamentals and risk management
scenarios. SQL engines generally execute the statement unless transaction safeguards are in
place.

════════════════════

10. Which statement removes all rows from a table while keeping the table structure intact?

A. DELETE TABLE
B. REMOVE ALL
C. DROP TABLE
D. DELETE FROM table_name