Hackerrank Binary Search Tree Problem | SQL | Ashutosh Kumar

Sql one of the most important language asked in most of the analytics interviews, in this series i will be solving sql questions from hackerrank, hackerearth, leetcode and many other websites which are more relevant to questions asked in interviews these questions will be in all levels -
Easy
Medium
Hard
👉 Link to questions -
www.hackerrank.com/challenges...
👉 Complete playlist on Sql Interview questions and answers
• HackerRank SQL problem...
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🏷️ Tags
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🏷️HashTags
#sql #interviews #questions #solutions

[@AshutoshKumaryt]

👉 SQL Portfolio Project Indian Census- Part 1
th-cam.com/video/I3YvjFfn478/w-d-xo.html

[@pranveshpandey6316]

what if a parent has only one child ie if 8 has only 6 and not 9, in that case will this solution work?

[@SofiaSyed-cu4lr]

SELECT N,
CASE
WHEN P IS NULL THEN "Root"
WHEN N IN (SELECT P FROM BST) THEN "Inner"
ELSE "Leaf"
END
FROM BST
ORDER BY N

[@rivughosh4814]

What was the use of n?

[@AshutoshKumaryt]

N is a name of subquery