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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);

A) Employee IDs from department 10
B) Employee IDs from departments with no employees
C) Employees with salaries greater than 10
D) All employee IDs

2. Which SQL clause can be used in Oracle to limit the number of rows returned?

A) FETCH FIRST n ROWS ONLY
B) WHERE
C) GROUP BY
D) DISTINCT

3. Which type of join returns all rows from the left table, even if there are no matches in the right table?

A) INNER JOIN
B) LEFT OUTER JOIN
C) RIGHT OUTER JOIN
D) FULL OUTER JOIN

4. Which SQL clause is used to specify the source table in a query?

A) WHERE
B) GROUP BY
C) FROM
D) SELECT

5. Which command would drop an index from a table?

A) DROP INDEX
B) REMOVE INDEX
C) DELETE INDEX
D) TRUNCATE INDEX

Solutions: