Can we use group by in subquery?

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Tags

1. #select
2. #table
3. #virtual
4. #found
5. #subquery
6. #column
7. #order
8. #columns
9. #group
10. #clauses
11. #alias
12. #return
13. #having
14. #statement
15. #values
16. #outer
17. #numactivities
18. #using
19. #query
20. #example
21. #number