HackerRank-SQL-challenges

Description

This is a repository to store my solutions to SQL challenge problems from HackerRank. Queries are executed on MySQL environment. This repository is currently being updated as challenge problems are completed.

Basic Select Challenges

Number	Challenges	Solutions
1	Revising the Select Query I	Link
2	Revising the Select Query II	Link
3	Select All	Link
4	Select By ID	Link
5	Japanese Cities' Attributes	Link
6	Japanese Cities' Names	Link
7	Weather Observation Station 1	Link
8	Weather Observation Station 3	Link
9	Weather Observation Station 4	Link
10	Weather Observation Station 5	Link
11	Weather Observation Station 6	Link
12	Weather Observation Station 7	Link
13	Weather Observation Station 8	Link
14	Weather Observation Station 9	Link
15	Weather Observation Station 10	Link
16	Weather Observation Station 11	Link
17	Weather Observation Station 12	Link
18	Higher Than 75 Marks	Link
19	Employee Names	Link
20	Employee Salaries	Link

Basic Join

Number	Challenges	Solutions
1	Population Census	Link
2	African Cities	Link
3	Average Population of Each Continent	Link
4	The Report	Link
5	Top Competitors	Link
6	Ollivander's Inventory	Link
7	Challenges
8	Contest Leaderboard