Top Competitors is another HackerRank problem from Basic Join Category. Here is the SQL solution in MySQL environment.

Problem Description

Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who achieved full scores for more than one challenge. Order your output in descending order by the total number of challenges in which the hacker earned a full score. If more than one hacker received full scores in same number of challenges, then sort them by ascending hacker_id.

Sample Output

90411 Joe

To know the details about the problem visit : Top Competitors

Solution

Please check the snippet for the sql implementation. If you have different approach in mind feel free to share in the comment below.

Originally posted at: github.com by @Thomas-George-T