Which is better not in or not exists?

Related questions

1. What is still grammar?
2. Is surpass and exceed synonyms?
3. Is subquery better than join?
4. What does all do in SQL?
5. What is the difference between in and any in SQL?
6. What does exists mean in SQL?
7. What is mean of Exceeds?
8. What is the opposite of exist?
9. Which is better in or exists SQL?
10. IS NOT NULL SQL?

Tags

1. #unlike
2. #totally
3. #cases
4. #exists
5. #return
6. #important
7. #specifically
8. #match
9. #returns
10. #involved
11. #thing
12. #specific
13. #about
14. #different
15. #nulls
16. #equivalent
17. #subquery
18. #results