Can we group by two columns in MySQL?

Related questions

1. What is the difference between group by and distinct in SQL?
2. Can we use group by and order by in same query?
3. What is difference between group by and having?
4. How do I count groups in mysql?
5. Why we use having in SQL?
6. What is the purpose of group by clause?
7. What are aggregate functions in SQL?
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10. What distinct does in SQL?

Tags

1. #testing
2. #consider
3. #clause
4. #named
5. #lname
6. #possible
7. #second
8. #which
9. #table
10. #columns
11. #mysql
12. #first
13. #fname
14. #group
15. #example
16. #query
17. #multiple
18. #distinct
19. #following