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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. Which SQL function calculates the number of months between two dates?
Response:

A) DATE_CALC
B) DATE_DIFF
C) MONTHS_BETWEEN
D) TIME_DIFF

2. Which operator can be used in a multiple-row subquery to match a single value to a list of values?

A) NOT NULL
B) EXISTS
C) =
D) IN

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

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

4. Which data dictionary view lists all indexes created by the current user?

A) ALL_INDEXES
B) INDEX_LIST
C) USER_INDEXES
D) DBA_INDEXES

5. What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;

A) Returns only the employees with salaries and bonuses
B) Combines the salaries and bonuses for employees, removing duplicates
C) Returns only employees with duplicate employee IDs in both tables
D) Combines all employee IDs, salaries, and bonuses, including duplicates

Solutions: