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https://www.hackerrank.com/challenges/the-report/problem?isFullScreen=true The Report | HackerRank Write a query to generate a report containing three columns: Name, Grade and Mark. www.hackerrank.com 문제 You are given two tables: Students and Grades. Students contains three columns ID, Name and Marks. Grades contains the following data: Ketty gives Eve a task to generate a report containing thre..

https://www.hackerrank.com/challenges/occupations/problem?isFullScreen=true Occupations | HackerRank Pivot the Occupation column so the Name of each person in OCCUPATIONS is displayed underneath their respective Occupation. www.hackerrank.com 문제 Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. The output ..

https://www.hackerrank.com/challenges/challenges/problem?isFullScreen=true Challenges | HackerRank Print the total number of challenges created by hackers. www.hackerrank.com 문제 Julia asked her students to create some coding challenges. Write a query to print the hacker_id, name, and the total number of challenges created by each student. Sort your results by the total number of challenges in de..

https://www.hackerrank.com/challenges/weather-observation-station-20/problem?isFullScreen=true 문제 A median is defined as a number separating the higher half of a data set from the lower half. Query the median of the Northern Latitudes (LAT_N) from STATION and round your answer to decimal places. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG..

Interviews | HackerRank find total number of view, total number of unique views, total number of submissions and total number of accepted submissions. www.hackerrank.com 문제 Samantha interviews many candidates from different colleges using coding challenges and contests. Write a query to print the contest_id, hacker_id, name, and the sums of total_submissions, total_accepted_submissions, total_vi..