HackerRank isn’t just a random collection of problems; they’ve organized their SQL section pretty well. You can find ...

From Relational to Graph Databases: The 'Association' Revolution in the Era of Big Data In this era of information explosion, ...

User created a complex Model (built on a Table joined to a Model (built on two tables joined with aggregates and group bys) joined to a Question with aggregates group bys and custom columns). The ...

Find highest and lowest salaries Get employees absent more than 10 times Show top 3 departments by performance Calculate attendance percentage for each employee Find highest paid employee in each ...