Need help !! what's wrong with my code
\nselect id, case when p_id is null then \'Root\'\n                    when id not in (select distinct p_id from tree) then \'Leaf\' else \'inner\' end as Type\
```\nselect id, case when p_id is null then \'Root\'\n                    when id not in (select distinct p_id from tree) then \'Leaf\' else \'inner\' end as Type\nfrom tree; \n```
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