PDF Version DemoOracle Database 23ai SQL Associate Sample Questions:
1. What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;
A) Concatenated first and last names with spaces in between
B) A syntax error
C) Only the first names of employees
D) Concatenated first and last names without spaces
2. What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
A) Return employees with a salary below the average salary
B) Return employees with a salary equal to the average salary
C) Return all employees and their salaries
D) Return employees with a salary above the average salary
3. Which INTERVAL data type would you use to store a period of time in years and months?
A) INTERVAL MONTH TO DAY
B) INTERVAL MINUTE TO HOUR
C) INTERVAL YEAR TO MONTH
D) INTERVAL DAY TO SECOND
4. Which operator can be used in a multiple-row subquery to match a single value to a list of values?
A) =
B) EXISTS
C) IN
D) NOT NULL
5. Which command revokes a user's privilege to update a table?
A) DENY UPDATE ON table_name FROM user_name;
B) DELETE UPDATE ON table_name FROM user_name;
C) REVOKE UPDATE ON table_name FROM user_name;
D) REMOVE UPDATE ON table_name FROM user_name;
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: C |
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