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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What happens when the maximum value of a sequence is reached?

A) The sequence stops generating values.
B) An error is raised, and the sequence must be recreated.
C) The sequence resets to the starting value if the CYCLE option is specified.
D) The sequence starts decrementing values.

2. What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;

A) Deletes the employees table
B) Removes duplicate rows from the employees table
C) Drops the salary column from the employees table
D) Sets the salary column to NULL for all rows

3. What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;

A) 15.6
B) 15.678
C) 15.68
D) 15.67

4. What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;

A) CROSS JOIN
B) OUTER JOIN
C) EQUI JOIN
D) NATURAL JOIN

5. Which SQL function converts a string representation of a date into a date data type?

A) TO_DATE
B) CAST_TO_DATE
C) CONVERT_TO_DATE
D) DATE_CONVERT

Solutions: