MySQL quiz

Test your MySQL knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

Which data type would you use for a true/false flag?

1. Which data type would you use for a true/false flag?
2. What does `JOIN` do in SQL?
3. How do you add a new column to an existing table?
4. What is MySQL?
5. Which clause filters rows in a `SELECT` query?
6. What clause limits the number of rows returned?
7. What does `mysqldump` produce by default?
8. What does `GROUP BY` do?
9. What does a `LEFT JOIN` return?
10. What does the `VARCHAR(n)` type represent?
11. What is a `PRIMARY KEY`?
12. Which tool is the standard MySQL command-line client?

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