HackerRank-SQL My profile : Somia Nasir Basic Select Challenge Solution Difficulty Revising the Select Query I revising-the-select-query.sql Easy Revising the Select Query II revising-the-select-query-2.sql Easy Select All select-all-sql.sql Easy Select By ID select-by-id.sql Easy Japanese Cities' Attributes japanese-cities-attributes.sql Easy Japanese Cities' Names japanese-cities-name.sql Easy Weather Observation Station 1 weather-observation-station-1.sql Easy Weather Observation Station 3 weather-observation-station-3.sql Easy Weather Observation Station 4 weather-observation-station-4.sql Easy Weather Observation Station 5 weather-observation-station-5.sql Easy Weather Observation Station 6 weather-observation-station-6.sql Easy Weather Observation Station 7 weather-observation-station-7.sql Easy Weather Observation Station 8 weather-observation-station-8.sql Easy Weather Observation Station 9 weather-observation-station-9.sql Easy Weather Observation Station 10 weather-observation-station-10.sql Easy Weather Observation Station 11 weather-observation-station-11.sql Easy Weather Observation Station 12 weather-observation-station-12.sql Easy Higher Than 75 Marks more-than-75-marks.sql Easy Employee Names name-of-employees.sql Easy Employee Salaries salary-of-employees.sql Easy Aggregation Challenge Solution Difficulty Revising Aggregations - The Count Function revising-aggregations-the-count-function.sql Easy Revising Aggregations - The Sum Function revising-aggregations-sum.sql Easy Revising Aggregations - Averages revising-aggregations-the-average-function.sql Easy Average Population average-population.sql Easy Japan Population japan-population.sql Easy Population Density Difference population-density-difference.sql Easy The Blunder the-blunder.sql Easy Top Earners earnings-of-employees.sql Easy Weather Observation Station 2 weather-observation-station-2.sql Easy Weather Observation Station 13 weather-observation-station-13.sql Easy Weather Observation Station 14 weather-observation-station-14.sql Easy Weather Observation Station 15 weather-observation-station-15.sql Easy Weather Observation Station 16 weather-observation-station-16.sql Easy Weather Observation Station 17 weather-observation-station-17.sql Easy Weather Observation Station 18 weather-observation-station-18.sql Medium Weather Observation Station 19 weather-observation-station-19.sql Medium to be continued ...