Consistent SQL practice across varied platforms builds real job-ready confidence. Guided lessons help beginners, while timed challenges sharpen interview performance. Real datasets improve practical ...

Thinking about getting into coding or leveling up your skills? You’ve probably heard of HackerRank. It’s a big name in the tech world for practice and hiring. But the big question on a lot of people’s ...

Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

select t1.flight_id,t2.flight_id, concat(t1.flight_id,',',t2.flight_id),t3.city_name, ...

SQL skills are essential for high-demand roles like data analyst, business analyst, data scientist, software developer, and database administrator. Mastering SQL enables professionals to efficiently ...

SQL, the Structured Query Language, is a cornerstone skill for anyone working with data. To master this powerful language, consistent practice is crucial. We present a curated list of 12 top-notch ...

we have a swipe table which keeps track of the employee login and logout timings. 1. Find out the time employee person spent in office on a particular day (office hours = last logout time - first ...

SQL, or Structured Query Language, is like the language of databases. It’s a way for computers to understand and manage data. Whether one is aiming to be a data analyst, scientist, or engineer, SQL is ...

class Rectangle: def __init__(self,breadth,length): self.breadth=breadth self.length=length def area(self): return self.breadth*self.length pass class Circle: def ...