Oneulog

https://www.hackerrank.com/challenges/harry-potter-and-wands/problem?isFullScreen=true Ollivander's Inventory | HackerRank Help pick out Ron's new wand. www.hackerrank.com 문제 Harry Potter and his friends are at Ollivander's with Ron, finally replacing Charlie's old broken wand. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non-ev..

https://www.hackerrank.com/challenges/full-score/problem?isFullScreen=true Top Competitors | HackerRank Query a list of top-scoring hackers. www.hackerrank.com 문제 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 o..

https://www.hackerrank.com/challenges/weather-observation-station-20/problem?isFullScreen=true Weather Observation Station 20 | HackerRank Query the median of Northern Latitudes in STATION and round to 4 decimal places. www.hackerrank.com 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 STATIO..

https://www.hackerrank.com/challenges/the-company/problem?isFullScreen=true New Companies | HackerRank Find total number of employees. www.hackerrank.com 문제 Amber's conglomerate corporation just acquired some new companies. Each of the companies follows this hierarchy: Given the table schemas below, write a query to print the company_code, founder name, total number of lead managers, total numbe..

https://www.hackerrank.com/challenges/binary-search-tree-1/problem?isFullScreen=true Binary Tree Nodes | HackerRank Write a query to find the node type of BST ordered by the value of the node. www.hackerrank.com 문제 You are given a table, BST, containing two columns: N and P, where N represents the value of a node in Binary Tree, and P is the parent of N. Write a query to find the node type of Bi..

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/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/weather-observation-station-5/problem?isFullScreen=true Weather Observation Station 5 | HackerRank Write a query to print the shortest and longest length city name along with the length of the city names. www.hackerrank.com 문제 Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i.e.: number of charac..