Title: Mastering SQL Challenges and Interview Preparation on HackerRank I'm excited to share a major milestone in my SQL journey! 🌟 Over the past few weeks, I've diligently worked through all 58 ...

Julia conducted a days of learning SQL contest. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. Write a query to print total number of unique hackers who made at ...

Today, I’m proud to share a new achievement in my professional journey — I’ve officially earned the HackerRank Advanced SQL Certificate! 🎓💻 This accomplishment marks an important step in my learning ...

The following challenges all revolve around simple SELECT statements that make use of SELECT, FROM, WHERE, and ORDER BY. The WHERE clauses will use and three basic boolean operators as well as some of ...