The Report HackerRank Problem

The problem context involves a database of students and their grades. The goal is to identify students who have a grade greater than 7, and retrieve their names, grades, and marks. The data is then sorted by grade in descending order, names in ascending order, and marks in ascending order.

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Here is the The Report HackerRank Problem HackerRank solution using CodeRankGPT:

The solution uses a SQL SELECT statement with a CASE condition to filter out students with a grade greater than 7. It then joins the 'students' and 'grades' tables on the condition that the student's marks fall between the minimum and maximum mark for a grade. The result is ordered by grade (descending), names (ascending), and marks (ascending).


SELECT CASE
         WHEN G.grade > 7 THEN S.name
         ELSE NULL
       end AS names,
       G.grade,
       S.marks
FROM   students S
       JOIN grades G
         ON S.marks BETWEEN G.min_mark AND G.max_mark
ORDER  BY G.grade DESC,
          names ASC,
          S.marks ASC;

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