Example I have 500 users and every 50 users manage by one moderator.

Let's say `moderator_id = 1` can edit/manage user from `user_id` 1 until 50. What is the statement should I use?

```
SELECT * FROM users
  WHERE 
  user_id `what should i use here?` 
  AND 
  moderator_id = '1';

```

Let me know..