Test Your Oracle NOT IN Operator Knowledge

Progress

True / False

In Oracle, the NOT IN operator is used to filter rows where a column's value does not match any value in a specified list.

True False

The NOT IN operator filters rows by excluding those where the column's value matches any value in the provided list.

True / False

The NOT IN operator can be used in the WHERE clause of an Oracle SQL query.

True False

The NOT IN operator is commonly used in the WHERE clause to exclude rows that match the specified values.

True / False

In Oracle, the NOT IN operator cannot be used with numeric data types.

True False

The NOT IN operator can be used with any data type, including numeric, character, and date types.

True / False

In Oracle, the NOT IN operator returns TRUE if any value in the list is NULL.

True False

If any value in the list is NULL, the NOT IN operator will return UNKNOWN (effectively filtering out the rows), because NULL cannot be compared using equality operators.

True / False

The NOT IN operator in Oracle is case-sensitive when comparing string values.

True False

String comparisons using the NOT IN operator are case-sensitive unless the database collation is set to be case-insensitive.

True / False

In Oracle, you can use the NOT IN operator with subqueries to exclude rows based on the results of another query.

True False

The NOT IN operator can be used with subqueries to exclude rows that match any of the values returned by the subquery.

True / False

In Oracle, using the NOT IN operator with a large list of values can impact query performance.

True False

Using the NOT IN operator with a large list can degrade performance due to the need to check each value against many potential exclusions.

True / False

The NOT IN operator can be replaced with multiple AND conditions to achieve the same result in Oracle.

True False

The NOT IN operator cannot be directly replaced with multiple AND conditions; instead, you would use multiple AND conditions in conjunction with <> operators to exclude values.

True / False

In Oracle, using an indexed column with the NOT IN operator can optimize query performance.

True False

The NOT IN operator does not typically benefit from indexes because it requires checking all values in the list, which can lead to a full table scan.

Q10

True / False

The Oracle Certified Professional (OCP) exam includes knowledge on using the NOT IN operator efficiently and understanding its limitations and performance implications in SQL queries.

True False

The OCP certification covers advanced topics, including the effective use of the NOT IN operator, its limitations, and its performance implications in SQL queries.

Q11

Single Choice

What is the primary use of the NOT IN operator in Oracle SQL?

To combine two strings To select rows where a column value does not match any value in a specified list To sort data in descending orderTo filter rows based on a condition

The NOT IN operator is used to filter rows where a column value does not match any value in a specified list.

Q12

Single Choice

Consider the following Oracle SQL query:What will this query return?

SQL Code

SELECT * FROM employees WHERE department_id NOT IN (10, 20, 30);

Employees in departments 10, 20, or 30 Employees not in departments 10, 20, or 30 All employeesAn error because NOT IN cannot be used with numbers

The NOT IN operator filters the rows to return only those where department_id is not 10, 20, or 30.

Q13

Single Choice

Which of the following statements is true about the NOT IN operator in Oracle?

It can only be used with numeric values It can be used with strings, numbers, and dates It automatically sorts the result setIt returns rows with matching values

The NOT IN operator can be used with various data types, including strings, numbers, and dates, to exclude rows that match any value in a list.

Q14

Single Choice

Consider the following Oracle SQL query:What will this query return?

SQL Code

SELECT * FROM orders WHERE order_status NOT IN ('Shipped', 'Pending', 'Cancelled');

Orders with status 'Shipped', 'Pending', or 'Cancelled' Orders with any status Orders with statuses other than 'Shipped', 'Pending', or 'Cancelled'An error because NOT IN cannot be used with strings

The NOT IN operator filters the rows to return orders with statuses other than 'Shipped', 'Pending', or 'Cancelled'.

Q15

Single Choice

What will be the result of the following Oracle SQL query?

SQL Code

SELECT * FROM products WHERE price NOT IN (100, 200, 300) ORDER BY price ASC;

Products with a price of 100, 200, or 300 Products with any price Products with a price other than 100, 200, or 300, sorted by price in ascending orderProducts with a price greater than 300

The NOT IN operator filters the products table to include only rows where price is not 100, 200, or 300, and the ORDER BY clause sorts the result by price in ascending order.

Q16

Single Choice

Consider the following Oracle SQL query:What will this query return?

SQL Code

SELECT first_name, last_name FROM employees WHERE department_id NOT IN (SELECT department_id FROM departments WHERE location_id = 1700);

Employees in departments located at location 1700 Employees not in departments located at location 1700 All employees regardless of departmentDepartments located at location 1700

The NOT IN operator with a subquery filters the employees table to include only those employees who do not work in departments located at location_id 1700.

Q17

Single Choice

What happens if the list of values used with the NOT IN operator contains NULL in Oracle?

The NOT IN operator will ignore the NULL values The NOT IN operator will return all rows The NOT IN operator will return no rowsThe NOT IN operator will exclude rows where the column value is NULL

If the list of values contains NULL, the NOT IN operator returns no rows because the comparison with NULL is unknown, causing the entire condition to evaluate to false.

Q18

Single Choice

Consider the following Oracle SQL query:What does this query return?

SQL Code

SELECT * FROM sales WHERE sale_date NOT IN ('01-JAN-2023', NULL, '15-FEB-2023');

Sales on January 1, 2023, and February 15, 2023, excluding NULL Sales on dates other than January 1, 2023, and February 15, 2023 An error because NULL cannot be used in the NOT IN operatorNo rows

Since the list includes a NULL value, the NOT IN operator will return no rows because the comparison involving NULL results in an unknown condition.

Q19

Single Choice

How can the NOT IN operator be safely used with subqueries that might return NULL values in Oracle?

By using the IS NOT NULL condition in the subquery By using the = operator instead By using the IN operatorBy ignoring NULL values

To safely use NOT IN with a subquery that might return NULL, you should include the IS NOT NULL condition in the subquery to exclude NULL values and avoid returning no rows.

Q20

Single Choice

In an Oracle certification exam, you encounter the following SQL statement:What does this query return?

SQL Code

SELECT product_id, product_name FROM products WHERE category_id NOT IN (SELECT category_id FROM categories WHERE category_name LIKE 'Electronics%');

Products in all categories Products in categories that do not start with 'Electronics' Categories that do not start with 'Electronics'An error because NOT IN cannot be used with a subquery

The NOT IN operator with a subquery filters the products table to include only those products in categories where the category_name does not start with 'Electronics'.

Q21

Multiple Choice

Which SQL code snippet correctly uses the NOT IN operator to filter employees not in specific department IDs in Oracle?

SQL Code

SELECT *
FROM employees
WHERE department_id NOT IN (10, 20, 30);

SELECT *
FROM employees
WHERE department_id <> 10 AND department_id <> 20 AND department_id <> 30;

SELECT employee_id, department_id
FROM employees
WHERE department_id NOT IN (10, 20, 30);

SELECT * FROM employees WHERE department_id NOT IN (10, 20, 30); SELECT * FROM employees WHERE department_id <> 10 AND department_id <> 20 AND department_id <> 30; SELECT employee_id, department_id FROM employees WHERE department_id NOT IN (10, 20, 30);SELECT * FROM employees WHERE department_id NOT IN (40, 50, 60);

Options A and C correctly use the NOT IN operator to filter employees not in specific department IDs. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q22

Multiple Choice

Which SQL code snippet demonstrates how to use the NOT IN operator to filter orders with status values not in a specific list in Oracle?

SQL Code

SELECT *
FROM orders
WHERE status NOT IN ('Cancelled', 'Returned');

SELECT *
FROM orders
WHERE status <> 'Cancelled' AND status <> 'Returned';

SELECT order_id, status
FROM orders
WHERE status NOT IN ('Cancelled', 'Returned');

SELECT * FROM orders WHERE status NOT IN ('Cancelled', 'Returned'); SELECT * FROM orders WHERE status <> 'Cancelled' AND status <> 'Returned'; SELECT order_id, status FROM orders WHERE status NOT IN ('Cancelled', 'Returned');SELECT * FROM orders WHERE status NOT IN ('Shipped', 'Delivered');

Options A and C correctly use the NOT IN operator to filter orders with status values not in a specific list. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q23

Multiple Choice

Which SQL code snippet uses the NOT IN operator to filter products not in specific categories in Oracle?

SQL Code

SELECT *
FROM products
WHERE category_id NOT IN (100, 200, 300);

SELECT *
FROM products
WHERE category_id <> 100 AND category_id <> 200 AND category_id <> 300;

SELECT product_id, category_id
FROM products
WHERE category_id NOT IN (100, 200, 300);

SELECT * FROM products WHERE category_id NOT IN (100, 200, 300); SELECT * FROM products WHERE category_id <> 100 AND category_id <> 200 AND category_id <> 300; SELECT product_id, category_id FROM products WHERE category_id NOT IN (100, 200, 300);SELECT * FROM products WHERE category_id NOT IN (400, 500, 600);

Options A and C correctly use the NOT IN operator to filter products not in specific categories. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q24

Multiple Choice

Which SQL code snippet demonstrates how to use the NOT IN operator to filter customers not from specific cities in Oracle?

SQL Code

SELECT *
FROM customers
WHERE city NOT IN ('New York', 'Los Angeles', 'Chicago');

SELECT *
FROM customers
WHERE city <> 'New York' AND city <> 'Los Angeles' AND city <> 'Chicago';

SELECT customer_id, city
FROM customers
WHERE city NOT IN ('New York', 'Los Angeles', 'Chicago');

SELECT * FROM customers WHERE city NOT IN ('New York', 'Los Angeles', 'Chicago'); SELECT * FROM customers WHERE city <> 'New York' AND city <> 'Los Angeles' AND city <> 'Chicago'; SELECT customer_id, city FROM customers WHERE city NOT IN ('New York', 'Los Angeles', 'Chicago');SELECT * FROM customers WHERE city NOT IN ('San Francisco', 'Miami');

Options A and C correctly use the NOT IN operator to filter customers not from specific cities. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q25

Multiple Choice

Which SQL code snippet uses the NOT IN operator to filter inventory items not in specific stock statuses in Oracle?

SQL Code

SELECT *
FROM inventory
WHERE stock_status NOT IN ('In Stock', 'Out of Stock');

SELECT *
FROM inventory
WHERE stock_status <> 'In Stock' AND stock_status <> 'Out of Stock';

SELECT item_id, stock_status
FROM inventory
WHERE stock_status NOT IN ('In Stock', 'Out of Stock');

SELECT * FROM inventory WHERE stock_status NOT IN ('In Stock', 'Out of Stock'); SELECT * FROM inventory WHERE stock_status <> 'In Stock' AND stock_status <> 'Out of Stock'; SELECT item_id, stock_status FROM inventory WHERE stock_status NOT IN ('In Stock', 'Out of Stock');SELECT * FROM inventory WHERE stock_status NOT IN ('Backordered', 'Discontinued');

Options A and C correctly use the NOT IN operator to filter inventory items not in specific stock statuses. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q26

Multiple Choice

Which SQL code snippet demonstrates advanced use of the NOT IN operator to filter sales records where the sale location is not in specific regions in Oracle?

SQL Code

SELECT *
FROM sales
WHERE region NOT IN ('East', 'West');

SELECT *
FROM sales
WHERE region <> 'East' AND region <> 'West';

SELECT sale_id, region
FROM sales
WHERE region NOT IN ('East', 'West');

SELECT * FROM sales WHERE region NOT IN ('East', 'West'); SELECT * FROM sales WHERE region <> 'East' AND region <> 'West'; SELECT sale_id, region FROM sales WHERE region NOT IN ('East', 'West');SELECT * FROM sales WHERE region NOT IN ('North', 'South');

Options A and C correctly use the NOT IN operator to filter sales records where the sale location is not in specific regions. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q27

Multiple Choice

Which SQL code snippet uses the NOT IN operator to filter employees not in specific job titles in Oracle?

SQL Code

SELECT *
FROM employees
WHERE job_title NOT IN ('Manager', 'Analyst', 'Developer');

SELECT *
FROM employees
WHERE job_title <> 'Manager' AND job_title <> 'Analyst' AND job_title <> 'Developer';

SELECT employee_id, job_title
FROM employees
WHERE job_title NOT IN ('Manager', 'Analyst', 'Developer');

SELECT * FROM employees WHERE job_title NOT IN ('Manager', 'Analyst', 'Developer'); SELECT * FROM employees WHERE job_title <> 'Manager' AND job_title <> 'Analyst' AND job_title <> 'Developer'; SELECT employee_id, job_title FROM employees WHERE job_title NOT IN ('Manager', 'Analyst', 'Developer');SELECT * FROM employees WHERE job_title NOT IN ('Clerk', 'Assistant');

Options A and C correctly use the NOT IN operator to filter employees not in specific job titles. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q28

Multiple Choice

Which SQL code snippet demonstrates advanced use of the NOT IN operator to filter order items where the product ID is not in a specific list in Oracle?

SQL Code

SELECT *
FROM order_items
WHERE product_id NOT IN (101, 202, 303);

SELECT *
FROM order_items
WHERE product_id <> 101 AND product_id <> 202 AND product_id <> 303;

SELECT item_id, product_id
FROM order_items
WHERE product_id NOT IN (101, 202, 303);

SELECT * FROM order_items WHERE product_id NOT IN (101, 202, 303); SELECT * FROM order_items WHERE product_id <> 101 AND product_id <> 202 AND product_id <> 303; SELECT item_id, product_id FROM order_items WHERE product_id NOT IN (101, 202, 303);SELECT * FROM order_items WHERE product_id NOT IN (404, 505, 606);

Options A and C correctly use the NOT IN operator to filter order items where the product ID is not in a specific list. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q29

Multiple Choice

Which SQL code snippet uses the NOT IN operator to filter departments not in specific department names in Oracle?

SQL Code

SELECT *
FROM departments
WHERE department_name NOT IN ('HR', 'Finance', 'IT');

SELECT *
FROM departments
WHERE department_name <> 'HR' AND department_name <> 'Finance' AND department_name <> 'IT';

SELECT department_id, department_name
FROM departments
WHERE department_name NOT IN ('HR', 'Finance', 'IT');

SELECT * FROM departments WHERE department_name NOT IN ('HR', 'Finance', 'IT'); SELECT * FROM departments WHERE department_name <> 'HR' AND department_name <> 'Finance' AND department_name <> 'IT'; SELECT department_id, department_name FROM departments WHERE department_name NOT IN ('HR', 'Finance', 'IT');SELECT * FROM departments WHERE department_name NOT IN ('Marketing', 'Sales');

Options A and C correctly use the NOT IN operator to filter departments not in specific department names. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Q30

Multiple Choice

Which SQL code snippet demonstrates the certification-level use of the NOT IN operator to filter orders where the order total is not within a specific range of values in Oracle?

SQL Code

SELECT *
FROM orders
WHERE order_total NOT IN (1000, 2000, 3000);

SELECT *
FROM orders
WHERE order_total <> 1000 AND order_total <> 2000 AND order_total <> 3000;

SELECT order_id, order_total
FROM orders
WHERE order_total NOT IN (1000, 2000, 3000);

SELECT * FROM orders WHERE order_total NOT IN (1000, 2000, 3000); SELECT * FROM orders WHERE order_total <> 1000 AND order_total <> 2000 AND order_total <> 3000; SELECT order_id, order_total FROM orders WHERE order_total NOT IN (1000, 2000, 3000);SELECT * FROM orders WHERE order_total NOT IN (4000, 5000);

Options A and C correctly use the NOT IN operator to filter orders where the order total is not within a specific range of values. Option B uses NOT EQUAL conditions instead of the NOT IN operator.

Oracle Database Quiz Questions