SQL Problems Solutions Website Domain Challenge My solution Points LeetCode SQL Big Countries Solution - HackerRank SQL Reversing the Select Query I Solution 10 HackerRank SQL Reversing the Select Query II Solution 10 HackerRank SQL Select All Solution 10 HackerRank SQL SelectByID Solution 10 HackerRank SQL Weather Observation Station 3 Solution 10 HackerRank SQL Weather Observation Station I Solution 15 HackerRank SQL Japanese Cities' Attributes Solution 10 HackerRank SQL Japanese Cities' Names Solution 10 HackerRank SQL Weather Observation Station 4 Solution 10 HackerRank SQL Weather Observation Station 6 Solution 10 HackerRank SQL Weather Observation Station 7 Solution 10 HackerRank SQL Weather Observation Station 8 Solution 15 HackerRank SQL Weather Observation Station 9 Solution 10 HackerRank SQL Weather Observation Station 10 Solution 10 HackerRank SQL Weather Observation Station 11 Solution 15 HackerRank SQL Weather Observation Station 12 Solution 15 HackerRank SQL Employee Names Solution 10 HackerRank SQL Employee Salaries Solution 10 HackerRank SQL Higher Than 75 Marks Solution 15