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 ...

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, ...

Vertabelo delivers solutions for professionals who want to work with data. Furthermore, Python is a very versatile programming language that can be used for just about anything. Do you want to ...

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, 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 ...

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 ...