- Published on
Leetcode - 608. Tree Node
- Authors
- Name
- Indo Yoon
Table of Contents
문제
[Loading...
Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.
LeetCode
](https://leetcode.com/problems/tree-node/)
정답
SELECT id,
CASE
WHEN ISNULL(p_id) THEN 'Root'
WHEN id IN (SELECT p_id FROM Tree) THEN 'Inner'
ELSE 'Leaf'
END as type
FROM Tree