hardMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: A developer runs a SQL query against a database…
Exhibit
Refer to the exhibit.
Error log:
ERROR: column "user_id" does not exist in "users"
LINE 2: SELECT user_id, first_name FROM users WHERE last_name = 'Smith';
^
HINT: Perhaps you meant to reference the column "id" or "username".A developer runs a SQL query against a database and receives the error shown. Which of the following actions should the developer take first to resolve the issue?
⚠ Common exam trap
A common mix-up: candidates assume the error is due to case sensitivity or syntax issues, when in fact the most common cause is a simple typo or mismatch in column names, which is best resolved by checking the table definition first.
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
✓
Check the table definition to confirm column names.
The error indicates that the column 'user_id' does not exist in the 'users' table. The most logical first step is to check the table definition to confirm the actual column names, as the developer may have misspelled the column name or used the wrong case. This avoids unnecessary destructive actions like dropping the table or making incorrect assumptions about case sensitivity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check the table definition to confirm column names.
Why this is correct
Verifying the schema will show the correct column names.
- ✗
Drop and recreate the 'users' table with the correct column.
Why it's wrong here
This is destructive and unnecessary; just correct the query.
- ✗
Change 'user_id' to 'UserID' to match case-sensitive settings.
Why it's wrong here
The hint suggests 'id' or 'username', not 'UserID'.
- ✗
Add quotes around the table name.
Why it's wrong here
Quoting table names is not the issue; the column name is wrong.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 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-U71 exam.