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목록FROM 서브쿼리 (1)
HAZEL
[SQL : WITH / 서브쿼리 / INNER JOIN] HackerRank : Challenges
Challenges >> 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 descending order. If more than one student created the same number of challenges, then sort the result by hacker_id. If more than one student created the same numb..
DATA ANALYSIS/SQL
2021. 3. 11. 18:41