HackerRank - SQL
HackerRank is an online platform that offers programming challenges for developers of all levels. On this platform, you'll find a wide range of problems to solve in various programming languages. April - 25/2025Challenges
a. Easy
- Revising the Select Query I;
- Revising the Select Query II;
- Select All;
- Select By ID;
- Japanese Cities' Attributes;
- Japanese Cities' Names;
- Weather Observation Station 1;
- Weather Observation Station 2;
- Weather Observation Station 3;
- Weather Observation Station 4;
- Weather Observation Station 5;
- Weather Observation Station 6;
- Weather Observation Station 7;
- Weather Observation Station 8;
- Weather Observation Station 9;
- Weather Observation Station 10;
- Weather Observation Station 11;