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Oracle Database 23ai SQL Associate Sample Questions:

1. What is a subquery in SQL?

A) A query that combines data from multiple tables
B) A query used for joining two or more tables
C) A query used to create a table
D) A query inside another query

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

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

3. Which Oracle SQL function returns the current date and time, including time zone information?

A) SYSDATE
B) CURRENT_DATE
C) CURRENT_TIMESTAMP
D) NOW

4. Which clause is used to allow a user to grant a privilege to others?

A) WITH SHARE OPTION
B) WITH ADMIN OPTION
C) WITH GRANT OPTION
D) WITH SELECT OPTION

5. Which function is used to convert a string to uppercase in SQL?

A) TO_UPPERCASE
B) CONVERT_UPPER
C) UPPER
D) CASE_UPPER

Solutions: