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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Using SQL Functions	- Use conversion functions - Use character, number, and date functions in SELECT statements
Using Subqueries	- Use correlated subqueries - Use single-row subqueries - Use multiple-row subqueries
Using SELECT Statements	- Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Execute a basic SELECT statement
Using DML Statements	- Update rows in a table - Insert rows into a table - Control transactions - Delete rows from a table - Use the MERGE statement
Using Set Operators	- Use UNION, UNION ALL, INTERSECT, and MINUS operators
Controlling User Access	- Differentiate system privileges from object privileges - Grant and revoke privileges - Create and manage roles
Using Joins	- Use outer joins (LEFT, RIGHT, FULL) - Use self-joins - Use equijoins and non-equijoins - Use cross joins
Using DDL Statements	- Create and manage tables - Create and manage indexes - Create and manage views - Create and manage constraints - Create and manage sequences

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Oracle Database 23ai SQL Associate Sample Questions (Q56-Q61):

NEW QUESTION # 56
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. Combines all employee IDs, salaries, and bonuses, including duplicates
D. Returns only employees with duplicate employee IDs in both tables

Answer: C

NEW QUESTION # 57
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 departments with no employees
B. All employee IDs
C. Employees with salaries greater than 10
D. Employee IDs from department 10

Answer: B

NEW QUESTION # 58
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?

A. LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.
B. Both functions are identical in output.
C. LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.
D. LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.

Answer: D

NEW QUESTION # 59
Which function is used to extract the year from a date in SQL?

A. TO_YEAR(date)
B. GET_YEAR(date)
C. EXTRACT(YEAR FROM date)
D. YEAR(date)

Answer: C

NEW QUESTION # 60
Which function returns the current system date and time in the database session's time zone?

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

Answer: B

NEW QUESTION # 61
......

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