----Basic Select----

1- RevisingtheSelectQueryI.sql: https://www.hackerrank.com/challenges/revising-the-select-query/problem?isFullScreen=true

2- RevisingtheSelectQueryII.sql: https://www.hackerrank.com/challenges/revising-the-select-query-2/problem?isFullScreen=true

3- SelectAll.sql: https://www.hackerrank.com/challenges/select-all-sql/problem?isFullScreen=true

4- SelectByID.sql: https://www.hackerrank.com/challenges/select-by-id/problem?isFullScreen=true

5- JapaneseCitiesAttributes: https://www.hackerrank.com/challenges/japanese-cities-attributes/problem?isFullScreen=true

6- JapaneseCitiesNames: https://www.hackerrank.com/challenges/japanese-cities-name/problem?isFullScreen=true

7- WeatherObservationStation.sql: https://www.hackerrank.com/challenges/weather-observation-station-1/problem?isFullScreen=true

8- WeatherObservationStation3.sql: https://www.hackerrank.com/challenges/weather-observation-station-3/problem?isFullScreen=true

9- WeatherObservationStation4.sql: https://www.hackerrank.com/challenges/weather-observation-station-4/problem?isFullScreen=true

10- WeatherObservationStation5.sql: https://www.hackerrank.com/challenges/weather-observation-station-5/problem?isFullScreen=true

11- WeatherObservationStation6.sql: https://www.hackerrank.com/challenges/weather-observation-station-6/problem?isFullScreen=true

12- WeatherObservationStation7.sql: https://www.hackerrank.com/challenges/weather-observation-station-7/problem?isFullScreen=true

13- WeatherObservationStation8.sql: https://www.hackerrank.com/challenges/weather-observation-station-8/problem?isFullScreen=true

14- WeatherObservationStation9.sql: https://www.hackerrank.com/challenges/weather-observation-station-9/problem?isFullScreen=true

15- WeatherObservationStation10.sql: https://www.hackerrank.com/challenges/weather-observation-station-10/problem?isFullScreen=true

16- WeatherObservationStation11.sql: https://www.hackerrank.com/challenges/weather-observation-station-11/problem?isFullScreen=true

17- WeatherObservationStation12.sql: https://www.hackerrank.com/challenges/weather-observation-station-12/problem?isFullScreen=true

18- HigherThan75Marks.sql: https://www.hackerrank.com/challenges/more-than-75-marks/problem?isFullScreen=true

19- EmployeeNames.sql: https://www.hackerrank.com/challenges/name-of-employees/problem?isFullScreen=true

20- EmployeeSalaries.sql: https://www.hackerrank.com/challenges/salary-of-employees/problem?isFullScreen=true

----Aggregation----

1- PopulationDensityDifference.sql: https://www.hackerrank.com/challenges/population-density-difference/problem?isFullScreen=true

1- PopulationDensityDifference.sql: https://www.hackerrank.com/challenges/population-density-difference/problem?isFullScreen=true

2- TheBlunder.sql: https://www.hackerrank.com/challenges/the-blunder/problem?isFullScreen=true

3- TopEarners.sql: https://www.hackerrank.com/challenges/earnings-of-employees/problem?isFullScreen=true

4- WeatherObservationStation2.sql: https://www.hackerrank.com/challenges/weather-observation-station-2/problem?isFullScreen=true

5- WeatherObservationStation13.sql: https://www.hackerrank.com/challenges/weather-observation-station-13/problem?isFullScreen=true

6- WeatherObservationStation14.sql: https://www.hackerrank.com/challenges/weather-observation-station-14/problem?isFullScreen=true

7- WeatherObservationStation15.sql: https://www.hackerrank.com/challenges/weather-observation-station-15/problem?isFullScreen=true

8- WeatherObservationStation16.sql: https://www.hackerrank.com/challenges/weather-observation-station-16/problem?isFullScreen=true

9- WeatherObservationStation17.sql: https://www.hackerrank.com/challenges/weather-observation-station-17/problem?isFullScreen=true

10- WeatherObservationStation18.sql: https://www.hackerrank.com/challenges/weather-observation-station-18/problem?isFullScreen=true

11- WeatherObservationStation19.sql: https://www.hackerrank.com/challenges/weather-observation-station-19/problem?isFullScreen=true

12- WeatherObservationStation20.sql: https://www.hackerrank.com/challenges/weather-observation-station-20/problem?isFullScreen=true

----Basic Join----

1- OllivandersInventory.sql: https://www.hackerrank.com/challenges/harry-potter-and-wands/problem?isFullScreen=true

2- PopulationCencus.sql: https://www.hackerrank.com/challenges/asian-population/problem?isFullScreen=true

3- AfricanCities.sql: https://www.hackerrank.com/challenges/african-cities/problem?isFullScreen=true

4- AveragePopulationOfEachContinent.sql: https://www.hackerrank.com/challenges/average-population-of-each-continent/problem?isFullScreen=true

5- []