Hacker Rank SQL Challenge Solutions:
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
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
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
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
Index
Sub Domain
Language
Challenge Name
Challenge
Solution
1.
Advanced Join
MySQL
Placements
Challenge
Solution
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
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 !! ๐๐๐