Oracle 1Z0-171 - Oracle Database 23ai SQL Associate

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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the purpose of the MERGE statement in SQL?

A) To delete duplicate rows from a table
B) To combine the results of two queries
C) To join two tables into one
D) To update existing rows or insert new rows in a target table

2. What will the following query return?
SELECT EXTRACT(YEAR FROM CURRENT_DATE) AS year FROM dual;

A) An error due to incorrect syntax
B) The current year in the database time zone
C) The full date in the session time zone

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

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

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

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

5. Which function returns the current system date and time in the database session's time zone?

A) SYSDATE
B) LOCAL_TIME
C) SYSTEM_TIME
D) CURRENT_TIMESTAMP

Solutions: