HackerRank SQL challenges Description My solutions of HackerRank SQL challenges executed on MySQL environment. Table of Contents No. Sub Domain 01 Basic Select Basic Select Challenges No. Challenges Solutions 01 Revising the Select Query I SQL Solution 02 Revising the Select Query II SQL Solution 03 Select All SQL Solution 04 Select By ID SQL Solution 05 Japanese Cities' Attributes SQL Solution 06 Japanese Cities' Names SQL Solution 07 Weather Observation Station 1 SQL Solution 08 Weather Observation Station 3 SQL Solution 09 Weather Observation Station 4 SQL Solution 10 Weather Observation Station 5 SQL Solution 11 Weather Observation Station 6 SQL Solution 12 Weather Observation Station 7 SQL Solution 13 Weather Observation Station 8 SQL Solution 14 Weather Observation Station 9 SQL Solution 15 Weather Observation Station 10 SQL Solution 16 Weather Observation Station 11 SQL Solution 17 Weather Observation Station 12 SQL Solution 18 Higher Than 75 Marks SQL Solution 19 Employee Names SQL Solution 20 Employee Salaries SQL Solution