Hacker Rank SQL Challenge Solutions:

1. Basic Select Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Basic Select	MySQL	Revising the Select Query I	Challenge	Solution
2.	Basic Select	MySQL	Revising the Select Query II	Challenge	Solution
3.	Basic Select	MySQL	Select All	Challenge	Solution
4.	Basic Select	MySQL	Select By ID	Challenge	Solution
5.	Basic Select	MySQL	Japanese Cities Attributes	Challenge	Solution
6.	Basic Select	MySQL	Japanese Cities Names	Challenge	Solution
7.	Basic Select	MySQL	Weather Observation Station 1	Challenge	Solution
8.	Basic Select	MySQL	Weather Observation Station 3	Challenge	Solution
9.	Basic Select	MySQL	Weather Observation Station 4	Challenge	Solution
10.	Basic Select	MySQL	Weather Observation Station 5	Challenge	Solution
11.	Basic Select	MySQL	Weather Observation Station 6	Challenge	Solution
12.	Basic Select	MySQL	Weather Observation Station 7	Challenge	Solution
13.	Basic Select	MySQL	Weather Observation Station 8	Challenge	Solution
14.	Basic Select	MySQL	Weather Observation Station 9	Challenge	Solution
15.	Basic Select	MySQL	Weather Observation Station 10	Challenge	Solution
16.	Basic Select	MySQL	Weather Observation Station 11	Challenge	Solution
17.	Basic Select	MySQL	Weather Observation Station 12	Challenge	Solution
18.	Basic Select	MySQL	Higher Than 75 Marks	Challenge	Solution
19.	Basic Select	MySQL	Employee Names	Challenge	Solution
20.	Basic Select	MySQL	Employee Salaries	Challenge	Solution

2. Advanced Select Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Advanced Select	MySQL	Type of Triangle	Challenge	Solution
2.	Advanced Select	MySQL	The PADS	Challenge	Solution
3.	Advanced Select	MySQL	Occupations	Challenge	Solution

3. Aggregation Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Aggregation	MySQL	Revising Aggregations - The Count Function	Challenge	Solution
2.	Aggregation	MySQL	Revising Aggregations - The Sum Function	Challenge	Solution
3.	Aggregation	MySQL	Revising Aggregations - Averages	Challenge	Solution
4.	Aggregation	MySQL	Average Population	Challenge	Solution
5.	Aggregation	MySQL	Japan Population	Challenge	Solution
6.	Aggregation	MySQL	Population Density Difference	Challenge	Solution
7.	Aggregation	MySQL	The Blunder	Challenge	Solution
8.	Aggregation	MySQL	Top Earners	Challenge	Solution
9.	Aggregation	MySQL	Weather Observation Station 2	Challenge	Solution
10.	Aggregation	MySQL	Weather Observation Station 13	Challenge	Solution
11.	Aggregation	MySQL	Weather Observation Station 14	Challenge	Solution
12.	Aggregation	MySQL	Weather Observation Station 15	Challenge	Solution
13.	Aggregation	MySQL	Weather Observation Station 16	Challenge	Solution
14.	Aggregation	MySQL	Weather Observation Station 17	Challenge	Solution
15.	Aggregation	MySQL	Weather Observation Station 18	Challenge	Solution
16.	Aggregation	MySQL	Weather Observation Station 19	Challenge	Solution
17.	Aggregation	MySQL	Weather Observation Station 20	Challenge	Solution

4. Basic Join Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Basic Join	MySQL	Asian Population	Challenge	Solution
2.	Basic Join	MySQL	African Cities	Challenge	Solution
3.	Basic Join	MySQL	Average Population of Each Continent	Challenge	Solution
4.	Basic Join	MySQL	The Report	Challenge	Solution

5. Advanced Join Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Advanced Join	MySQL	Placements	Challenge	Solution

6. Alternative Queries Subdomain

Index	Sub Domain	Language	Challenge Name	Challenge	Solution
1.	Alternative Queries	MySQL	Draw The Triangle 1	Challenge	Solution
2.	Alternative Queries	MySQL	Draw The Triangle 2	Challenge	Solution

About This Repository

This is mostly for my personal learning and future references. But in case you are stuck or want to compare them with your own solutions. Do check them out !! 🌟🌟🌟