Practice Set Operations (5.8) - Structured Query Language (SQL) - Part 2
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Set Operations

Practice - Set Operations

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the purpose of UNION in SQL?

💡 Hint: Think about combining lists.

Question 2 Easy

Can UNION and UNION ALL return the same results?

💡 Hint: Consider what happens when two lists have the same items.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the UNION operator do?

Combines results and keeps duplicates
Combines results and removes duplicates
Only finds common results

💡 Hint: Remember how combining lists is affected by the presence of the same item.

Question 2

True or False: INTERSECT can be used in MySQL.

True
False

💡 Hint: Think about SQL variations across different systems.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given two tables of students and professors, write a query using INTERSECT to find names in both tables. Explain your query.

💡 Hint: Focus on what you want to find that’s common.

Challenge 2 Hard

Create a SQL query using EXCEPT to find students not involved in any clubs listed in a separate clubs table.

💡 Hint: Think about what you want to exclude versus include.

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Reference links

Supplementary resources to enhance your learning experience.