Binary Tree Nodes SQL HackerRank Solution

In this interesting challenge we would write an SQL query to determine what type of node each of a given list of nodes is: Root Node, Inner Node or Leaf Node
Link to Challenge - https://www.hackerrank.com/challenges...


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🔥 A Comprehensive Binary Tree Tutorial
1. Defining a Tree -    • Part 1 - Defining a Binary Tree Class...  
2. Define the Recursive Insert function    • Part 2 - Define the Recursive Insert(...  
3. Adding Nodes and Building the Tree    • Part 3 - Insert Nodes into the Binary...  
4. Printing all nodes InOrder    • Part 4 - InOrder Traversal of a Binar...  
5. Printing all Nodes PreOrder    • Part 5 - PreOrder Traversal of a Bina...  
6. Printing all Nodes PostOrder    • Part 6   PostOrder Traversal of a Bin...  
7. Breadth-First Search (BFS) - Algorithm Using Queues    • Part 7 - Breadth First Search (BFS) o...  

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SQL (Structured Query Language) is very useful for programmers, developers, data scientists and others.