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LeetCode-Solutions/MySQL/tree-node.sql at master · Addoile/LeetCode-Solutions · GitHub
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tree-node.sql
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tree-node.sql
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#
Time: O(n^2)
#
Space: O(n)
SELECT
atree
.
id
,
IF(ISNULL(
atree
.
p_id
),
'
Root
'
,
IF(
atree
.
id
IN
(
SELECT
p_id
FROM
tree),
'
Inner
'
,
'
Leaf
'
))
AS
Type
FROM
tree
AS
atree
ORDER BY
atree
.
id
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