Quick Answer
The answer is that all rows in the table are updated. This happens because an UPDATE statement without a WHERE clause tells the database to apply the change to every record in the specified table, treating the operation as a set-based command rather than a targeted edit. On the CompTIA ITF+ FC0-U61 exam, this scenario tests your understanding of SQL’s default behavior and is a classic trap: many new learners assume the command will fail or produce an error, but the database engine executes it without complaint, making a mass update the most likely outcome. To remember this, think of WHERE as the “safety gate” for UPDATE—without it, the gate is wide open, and every row gets the new value. A simple memory tip: “No WHERE, no care—every row gets a share.”
This FC0-U61 practice question tests your understanding of database fundamentals. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer writes an UPDATE statement to change the price of a product but accidentally omits the WHERE clause. What is the most likely outcome?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
All rows in the table are updated.
Without a condition, the update applies to every row.
Only the first row is updated.
Why wrong: UPDATE affects all rows unless filtered by WHERE.
The database returns a syntax error.
Why wrong: The statement is syntactically correct without WHERE; it updates all rows.
No rows are updated because the statement is invalid.
Why wrong: The statement executes successfully, updating all rows.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
All rows in the table are updated.
In SQL, an UPDATE statement without a WHERE clause applies the change to every row in the specified table. The database engine processes the statement as a set operation, iterating over all rows and setting the specified column(s) to the new value. This is not an error; it is a valid SQL command that results in a mass update.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
All rows in the table are updated.
Why this is correct
Without a condition, the update applies to every row.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Only the first row is updated.
Why it's wrong here
UPDATE affects all rows unless filtered by WHERE.
The database returns a syntax error.
Why it's wrong here
The statement is syntactically correct without WHERE; it updates all rows.
No rows are updated because the statement is invalid.
Why it's wrong here
The statement executes successfully, updating all rows.
Common exam traps
CompTIA often tests the misconception that an UPDATE without a WHERE clause will cause an error or only affect the first row, but the correct understanding is that it updates all rows in the table.
Detailed technical explanation
Under the hood, the SQL engine parses the UPDATE command and, when no WHERE clause is present, generates a query plan that performs a full table scan, updating each row. This behavior is defined by the SQL standard (ISO/IEC 9075) and is consistent across all major RDBMS implementations (e.g., MySQL, PostgreSQL, SQL Server). A real-world scenario where this matters is during a production deployment: a missing WHERE clause can inadvertently change all product prices, leading to data integrity issues and requiring a point-in-time recovery.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the FC0-U61 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Database Fundamentals — This question tests Database Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: All rows in the table are updated. — In SQL, an UPDATE statement without a WHERE clause applies the change to every row in the specified table. The database engine processes the statement as a set operation, iterating over all rows and setting the specified column(s) to the new value. This is not an error; it is a valid SQL command that results in a mass update.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This FC0-U61 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 FC0-U61 exam.
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