This repository contains my journey through SQL challenges on HackerRank, where I earned a 5-star rating in SQL programming. Each solution demonstrates different aspects of SQL querying, from basic ...
From the browser to the back end, the ‘boring’ choice is exciting again. We look at three trends converging to bring SQL back ...
We can use IF() function to solve this problem. First, the query returns N and node type from BST table and outputs result ordered by N. So the query looks like “SELECT N, IF() FROM BST ORDER BY N”.
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