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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. Which clause in an UPDATE statement typically uses a subquery to assign values to columns?

A) SET
B) WHERE
C) FROM
D) HAVING

2. What does the following query return?
SELECT employee_id
FROM employees
WHERE department_id IN (SELECT department_id FROM departments WHERE location_id = 1000);

A) Employees with no department
B) Employees working in location ID 1000
C) Departments located in location ID 1000
D) Employees with salaries greater than 1000

3. What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;

A) Retrieves employees with salary less than 5000, sorted by department ID
B) Retrieves all employees, sorted by department ID
C) Retrieves all employees with a salary greater than 5000, sorted by salary in ascending order
D) Retrieves all employees with a salary greater than 5000, sorted by department ID in ascending order

4. Which of the following can be achieved using a correlated subquery?

A) Comparing each employee's salary to the average salary of their department
B) Retrieving duplicate records from a single table
C) Joining two tables without a common column
D) Inserting data into a table

5. The column data type is converted to a primary key.

A) CREATE SYNONYM
B) CREATE INDEX
C) CREATE SEQUENCE
D) CREATE ALIAS

Solutions: