Multiple Choice Questions (MCQs) can significantly enhance your learning experience. They offer a quick and effective way to test your knowledge, helping you identify what you’ve mastered and where you need more study.

With immediate feedback, you can quickly correct mistakes and reinforce your understanding. MCQs are also engaging and less intimidating than long-form tests, making learning more enjoyable and motivating.

By using MCQs, you’ll feel more confident and prepared for any topic.

 

10. How would you write a query to find all records where a column value is exactly 'SQL'?

SELECT * FROM table WHERE column LIKE 'SQL';

SELECT * FROM table WHERE column = 'SQL';

SELECT * FROM table WHERE column IN ('SQL');

9. What does the NOT IN operator do?

Checks if a value is not within a list of values

Checks if a value is not within a range

Compares two values for inequality

8. Which operator is used to check if a value is within a specified range of values?

'BETWEEN'

'IN'

'LIKE'

7. What is the result of SELECT 7 + 3 * 2;?

13

20

17

6. How would you write a query to find all records where a column value is not in the list (10, 20, 30)?

'SELECT * FROM table WHERE column NOT IN (10, 20, 30);'

'SELECT * FROM table WHERE column = NOT IN (10, 20, 30);'

'SELECT * FROM table WHERE column != (10, 20, 30);'

5. What is the purpose of the NULLIF operator?

Returns null if two expressions are equal

Compares two values for inequality

Checks if a value is null

4. Which operator would you use to combine the result set of two SELECT statements and remove duplicates?

'UNION'

'UNION ALL'

'EXCEPT'

3. What is the result of SELECT 10 - 3 * 2;?

4

10

16

2. Which operator is used to filter results that meet none of the conditions?

'AND'

'OR'

'NOT'

1. What is the result of SELECT 16 / 4;?

4

8

12