So, you’ve got a HackerRank test coming up, huh? It’s pretty common these days, with lots of companies using it to see if you can code. It can feel a bit daunting, but honestly, it’s just another ...

SqlPractice001 : https://www.hackerrank.com/challenges/revising-the-select-query/problem SqlPractice002 : https://www.hackerrank.com/challenges/revising-the-select ...