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Business expansion sql hackerrank solution Now, Samantha’s best friend got offered a higher salary than her at 11. SQL (Advanced) Skills Certification Test 60 min. Amber’s conglomerate corporation just acquired some new companies. Then you could replace the inner loop with dbms_output. Algorithms. This is throw-away code that is only supposed to correctly get the job done. md. 2 Questions were asked, as of now 2 questions will be asked from these questions(I hope so), provided the solution also: Intermediate SQL solutions for HackerRank challenges, tackling business analysis and data insights. Please check 1. If there is more than one I took the HackerRank test on 10/11/2023. CONCAT(N, ' Inner'). 15%. Share this post. 0. Get certified with hakerrank SQL Interme This collection provides solutions to the HackerRank SQL Certification Test problems. - HackerRank-SQL-Intermediate/business_expansion_query. After a slow start, Swiggy snowballed into an unstoppable force that is now changing the way India eats. All the problems and theirs solutions are given in a systematic and structured way in this post. Crack your coding interview and get hired. @Tanishka Now that Alex as cracked how to run PL/SQL on Hackerrank, you could improve the answer by removing the whole DECLARE section, because your loops implicitly declare i and j so the ones at the top aren't used. 596. Welcome to HackerRank SQL (Intermediate) Skills Certification Test. Data Structures. Copy link. HackerRank SQL Solutions. sql at main Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. Amber's conglomerate corporation just acquired some new companies. Note: Print NULL when there are no more names corresponding to an occupation. There is no perfect or deterministic solution to You signed in with another tab or window. Contribute to sknsht/HackerRank development by creating an account on GitHub. DevSecOps DevOps CI/CD View certificate-intermediate-hackerrank. The Certificate can be viewed here . mysql challenge sql solutions tutorials hackerrank problem-solving hackerrank-solutions hackerrank-challenges hackerrank-sql hackerrank-sql-solutions mysql-environment sql-challenges select-challenges. " and my solution was " Select You signed in with another tab or window. 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 number of senior managers, total number of managers, and total number of employees. The Data are linked as follows Id in orders is OrderId in order_details. HackerRank SQL Problems and Solutions — 1. : enclosed in parentheses). - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution SELECT C. Student Analysis. By detailing sales figures per city and identifying customers who spent 25% or less than the average, this solution aids in strategic decision-making for optimizing sales and customer engagement. com practice problems in C++, python and SQL - IhorVodko/Hackerrank_solutions Two pairs (X 1, Y 1) and (X 2, Y 2) are said to be symmetric pairs if X 1 = Y 2 and X 2 = Y 1. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: Programs / Questions. SQL-Product-Sales-per-City files for the solutions Hello coders, today we are going to solve New Companies HackerRank Solution in SQL. Certification Test. Blame. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. You signed in with another tab or window. The questions asked are Invoices Per Country and Product Sales Per City. Each of the companies follows this hierarchy: You signed in with another tab or window. Updated Dec 9, 2024; Effective solutions to hackerrank. Q1) For the Given Data - order_details, orders & products. founder, COUNT(DISTINCT LM. Sep 15, 2024. Write a query to output all such symmetric pairs in ascending order by the value of X. DevSecOps DevOps CI/CD View all use cases By industry. Business Expansion. com/ Join over 23 million developers in solving code challenges on HackerRank, These concepts introduce more complex features and functionalities of SQL. This repo contains notes on SQL and PostgreSQL. Certificate: SQL Verified. My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. sql files for the solutions I submitted! Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions HackerRank MySQL challenge solution in the MySQL Advance Track - GitHub - hammad-ali-shah/SQL: HackerRank MySQL challenge solution in the MySQL Advance Track How to Earn SQL (Advanced) Certification on Hackerank ? In this video, you'll learn how to earn free certification from Hackerrank*****Impor This is a new question Hackerrank has added for the advance level SQL certification. Input Format. These problems are generated by HackerRank, but the solutions are provided by Niyander. I was not able to solve it at all. 38 watching. You switched accounts on another tab or window. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. If multiple contestants have the same score in a contest, they are at the same rank. HackerRank SQL (Intermediate) Skills Certification Test Solution - anugrahk21/HackerRank-SQL-Intermediate-Certificate-solution Post displaying HackerRank sql problem solving questions and solution. Problem; Input Format; Solution – Japan Population in SQL. SQL interview at Microsoft. company_code SQL Intermediate Certification Hackerrank Solution https://www. The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. Certificate can be viewed Here. Solve Challenge. Reload to refresh your session. 5 8 Something went wrong, please refresh the page to try again. youtube. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. You did such a great job helping Julia with her last coding contest challenge that she wants you to work on this one, too! Generate the following two result sets: Query an alphabetically ordered list of all names in OCCUPATIONS, immediately followed by the first letter of each profession as a parenthetical (i. Sort your results by the total number of challenges in Open source computer vision datasets and pre-trained models. Click here to see solutions for all Machine Learning Coursera Assignments. I typically arrive at more efficient solutions which I can translate into later projects and ultimately generate more business value. Instructions. MySQL; Problem. A SELECT CASE expression will result in the evaluation of at most one THEN expression -- the first one that has a WHEN condition that satisfies. Here is the certificate I got using the Intermediate SQL solutions for HackerRank challenges, tackling business analysis and data insights. Accelerate your Job Search. com/playlist?list=PL725CY54KY6JPgkikjL9-hANsKQeQjEO7Click here to Subscribe : https://www. Merit Rewards. No. I used the code stubs provided by HackerRank, so don't mind the unnecessary imports, naming convention and so on. Please check 1. In this case the rest of the CASE expression is You signed in with another tab or window. - MayankOps/HackerRank-SQL-Certification-Test-Solutions Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. 3 The United Nations Children's Fund (UNICEF) is a United Nations Programme headquartered in New York City, that provides long-term humanitarian and developmental assistance to children and mothers in developing countries. Unsolved. sql files for the solutions I submitted! \n Question 1: Business Expansion \n \n \n #hackerrank #sql #certificate #mssqlserver #sqlserver #interview SQL interview questions have been a critical component of technical hiring for decades. Hello coders, today we are going to solve Japan Population HackerRank Solution in SQL. Intermediate Contribute to ejaj/SQL development by creating an account on GitHub. Problem; Solution – Japanese Cities’ Names in SQL; Problem. 170+ solutions to Hackerrank. 50%. Review Profile. Feel free to use, share, and improve upon it! 🚀 Level up your SQL skills with these HackerRank challenges and become a coding master! 🚀 HackerRank concepts & solutions. You are the restaurant owner and you want to analyze a possible expansion (there will be at least one customer every day). Click here to see more codes for NodeMCU ESP8266 and similar Family. company_code, C. Problem. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Welcome to HackerRank SQL (Intermediate) Skills Certification Test. You can view my certificate by clicking the link below: View HackerRank Certificate Problem. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. Copy path. For each pair, provide the following details: User's ID, You signed in with another tab or window. SQL Exercises : SQL Practice with Solution for Beginners and Experienced SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. Write a query to print total number of unique hackers who made at least 1 submission Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. I have taken HackerRank SQL (Intermediate) Certificate test on 10th November 2024. Click here to see more codes for Raspberry Pi 3 and similar Family. For this Data Find out the GMV(Order Total) per Product Plot a graph The i th line is the expansion for the i th test input. Julia conducted a 15 days of learning SQL contest. Hakerrank SQL Intermediate Certification Solutions Invoices Per Country SELECT co. Facebook. We use cookies to ensure you have the best browsing experience on our website. total_price) FROM country co, city ci, customer cu, invoice i WHERE co. 1k stars. Watch also my other videos for more SQL Certification Solutions. SQL (Basic) SQL #C #HelloWorld #CS #C++ #Python #Programming #Unix #Linux #Hackerrank #CLanguage #CProgramming #Cbasics #printf #scanf #Certification #SQL #Mysql #MongoDB #i How to Earn SQL (Advanced) Certification on Hackerank ? In this video, you'll learn how to earn free certification from Hackerrank*****Impor You signed in with another tab or window. 1 Revising the Select You will Earned SQL Basic Certificate from Hackerrank This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Sample Input. _____ It also assumes that the given start and end date/times are during the business hours. Query the sum of the populations for all Japanese Hello coders, today we are going to solve Japanese Cities’ Names HackerRank Solution in SQL. Revising the Select Query I; 2. You switched accounts on another tab This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. This is hard SQL question asked in DELL and MICROSOFT interview published at Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. If you missed Part 1, don’t worry! Problem. Time is your friend Reply reply HackerRank SQL Problems and Solutions — 1. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Write a query to list the contestants ranked in the top 3 for each contest. ________ Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. Healthcare Financial services Manufacturing hackerrank business expansion sql. Write an SQL query to compute moving average of how much customer paid in a 7 days window (current day + 6 days before) . Customer_spending. senior_manager_code) AS Total Senior Manager, COUNT(DISTINCT M. lead_manager_code) AS Total Lead Manager, COUNT(DISTINCT SM. Showing projects matching "business expansion sql hackerrank solution instance segmentation" by subject, page 1. Ask Question Asked 7 years, 10 months ago. Readme License. Business_expansion. Intermediate. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. Sep 11, 2024. In this video I am solving the intermediate Certification Skills Test on Hackerrank. Write a query to print the id, age, coins_needed, and power of the wands that Ron’s interested in, sorted in order of In this video I am solving "New Companies" on Hackerrank. Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Adi The PM's Substack. The solutions of all SQL HackerRank challenges updated on 2024. Select all; 4. List the rows such that X 1 ≤ Y 1. com About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Inside you will find the solutions to all HackerRank SQL Questions. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. manager_code) AS Total Manager, COUNT(DISTINCT E. Open main menu. e. - kumod007/All-HackerRank-SQL-Challenges-Solutions Problem. Fe where LAT_N is the northern latitude and LONG_W is the western longitude. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non-evil wand of high power and age. Verify your SQL Skills. invoices-per-country The solutions of all SQL hackerrank challenges using MySQL environment. id = ci. of questions 2 questions. Report repository Releases. Revising the Select Query I – HackerRank Solution You signed in with another tab or window. Forks. 1. Table of Contents. Articles Works Shiny Snippets Resume About Contact. . Customer Spending. Each solution includes a brief explanation of the problem and my approach to solving it. Solutions to SQL Questions - HackerRank . Notes. This project is open-source and available under the MIT License. Order your output by ascending company_code. com/skills-verification/sql_basic Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. This T-SQL query SELECT city, Len(city) FROM station ORDER BY Len(city) returns table sorted by city, not by Len(city) - is this proper behavior? Hackerrank SQL challenge. Fariha Shah. total number of unique hackers who made at least 1 submission each day (starting on the first day of the contest), and; find the hacker_id and name of the hacker who made maximum number of submissions This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. country_id AND ci. Weather Observation Station 5 Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. . The interviewer mentioned I will be tested on SQL and Statistics, now when I clicked on the test link to see the test overview there are 3 sections. For example: AnActorName(A), ADoctorName(D), AProfessorName(P), and ASingerName(S). sql & 2. SELECT COUNT(CITY) — COUNT(DISTINCT CITY) FROM STATION ; X. You signed out in another tab or window. In your example, there are 8 business hours between 09:00 and 17:00. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Contribute to lpinzari/sql-psql-udy development by creating an account on GitHub. Visit chat. Can anyone help? There were a number of contests where participants each made number of attempts. Samantha Julia Scarlet Explanation. Mar 31, 2024. 2. ; Scalene: It’s a triangle with 3 sides of differing lengths. Stars. Output one of the following statements for each record in the table: Equilateral: It’s a triangle with 3 sides of equal length. 55; Julia’s best friend got offered a higher salary than her at 12. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: Business_Expansion. I have taken HackerRank test on 9th Oct 2022. Subqueries and Nested Queries. New Companies. It doesn't have to be a whole You signed in with another tab or window. sql files for the solutions I submitted! Question 1: Business Expansion. Related. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice hackerrank hackerrank-python hackerrank-solutions hackerrank-sql Resources. Hello coders, today we are going to solve Contest Leaderboard HackerRank Solution in SQL. sql-psql-udy / hackerRank_sql_solutions / 07_advance_certification / 01_crypto_market_algorithm. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview Problem. Crystal X. Get certified with hakerrank SQL Interme Web Development Tutorial Playlist: https://www. This is a timed test. Query the number of ocurrences of each occupation in OCCUPATIONS. I have taken HackerRank test on 22 July 2022. Create a new branch for your contribution. Id in products is productId in order_details. Write a query to print. To support the company's business expansion efforts, identify all customer-user pairs who have interacted more than once. The thing that bothers me with HackerRank SQL questions is that it doesn't show the SQL queries output properly, like with a table, with the column names etc. Personal. The Power of SQL in Business Expansion. Please make sure you are not interrupted during the test, as the timer cannot be paused once started. The solutions cover a wide range of SQL challenges, My solutions to SQL problems on HackerRank; 1. Basic . sql files for the solutions I Hacker rank SQL intermediate solution. 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 Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Revising the Select Query II; 3. Enterprises Small and medium teams Startups Nonprofits By use case. Basic. Your result cannot contain duplicates. Make your changes, add new features, or fix issues. Curate this topic Add this topic to your repo To associate your repository with the Guys support me 💙 💙💙💙 💙💙💙💙💙Subscribe my channel Hackerrank SQL Solutions in MS SQL Server. These solutions can be used as a reference for other learners or as a way to practice and improve SQL skills. You will Earned SQL Basic Certificate from #Hackerrankhttps://www. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Query the names of all the Japanese cities in the CITY The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled with helpful Resources & references related to the challenges. The output column headers should be Doctor, Professor, Singer, and Actor, respectively. Email. This is a Medium SQL Problem. As your business grows, so does the volume of data. Explore my GitHub repository to learn from my experiences and find inspiration for your SQL learning path. Crack LeetCode SQL Interview Questions. put_line(rpad('* ', i * 2, '* ')); And you don't have to code in uppercase :) – William Solutions to the SQL HackerRank challenges. Problem; Input Format; Explanation; Solution – Contest Leaderboard in SQL. First You signed in with another tab or window. Problem 1. employee_code) AS Total Employee FROM Company C LEFT JOIN Lead_Manager LM ON LM. Packages. Enterprises Small and medium teams Startups By use case. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Hackerrank SQL (Basic) Skills Certification Test Solutions. SQL (Advanced) Skills Certification Test. Status. With this assumption the code doesn't care about the time when the business day starts or ends, it cares only about the total number of business hours per day. Solutions By company size. Question 2: Customer Spending. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Verify your SQL Skills. HackerRank SQL Solutions 20 July 2020 Contribute to lpinzari/sql-psql-udy development by creating an account on GitHub. hackerrank hackerrank-solutions hackerrank-sql cracking-code-interview hackerrank-sql-solutions hackerrank-all-solutions hackerrank-sql-challenge hackerrank-sql-solution. country_name, count(*), AVG(i. In this article, I am going to share HackerRank SQL Solutions with you. Find solutions for various HackerRank SQL problems in a systematic and structured way. Guestbook. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution If you would like to contribute to this repository, follow these steps: Fork the repository. 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. We use cookies to ensure you have the best browsing This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. You signed in with another tab or window. HackerRank Problem Solving SQL: MySQL Hi friends I was solving this hacker rank sql problem " Query the list of CITY names from STATION that do not start with vowels. They are essential for building more sophisticated and robust queries, managing data relationships, and optimizing query performance. MIT license Activity. Binary Tree Nodes. The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. help required with Sql query. Modified 2 years, Stack Overflow Jobs is expanding to more countries. The test consists of two tasks that involve querying a database using SQL. We use cookies to ensure you have I've achieved the SQL Intermediate Certification from HackerRank. Sample Input Swiggy is a phoenix that rose out of Harsha & Nandan's earlier venture, Bundl Technologies. sql and 2. The certificate can be viewed here. See also my other videos about Hackerrank problems. Write a query to print the hacker_id, name, and the total number of challenges created by each student. Test duration 35 mins. Welcome back to Part 2 of our SQL Interview Preparation series with HackerRank! In this installment, we’re elevating our game as we dive into intermediate-level SQL questions. This repository contains the solutions for HackerRank Beginner and Intermediate SQL Certifications. ; Isosceles: It’s a triangle with 2 sides of equal length. 423 forks. Skills. DevSecOps DevOps CI/CD View all use cases HackerRank-SQL-Intermediate-Certificate HackerRank-SQL-Intermediate-Certificate Public. Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. Classes More Than 5 Students. All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Procedures have been used as a solution for so many problems, performance issues and not being able to separate the business Logic and transaction management 📜 License. Learn how to use select, aggregations, joins, subqueries and more in SQL queries. The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. SQL is indispensable in businesses due to its ability to handle complex data operations with ease. This repository contains MYSQL solutions of HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test . My solutions to HackerRank problems. This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your increasing knowledge. This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. : number of characters in the name). hackerrank solutions github | hackerrank all solutions | hackerrank solutions for java | hackerrank video tutorial | hackerrank cracking the coding interview solutions | hackerrank data structures | hackerrank solutions algorithms | hackerrank challenge | hackerrank coding challenge | hackerrank algorithms solutions github| hackerrank problem You signed in with another tab or window. Updated Apr 30, 2024; SQL; You signed in with another tab or window. So, without wasting any time, let’s jump to the solutions. Julia asked her students to create some coding challenges. Watchers. 12; Scarlet’s best friend got This collection provides solutions to the HackerRank SQL Certification Test problems. Published on November 5, 2020. Japanese Cities’ Attributes; 6. The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled with helpful Resources & references related to the challenges The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. Merit Rewards How to Earn SQL (Advanced) Certification on Hackerank ? In this video, you'll learn how to earn free certification from Hackerrank*****Impor Hackerrank SQL Solution #2Intermediate SQL - Binary Tree Nodes#sql #hackerrank #hackerrankcourse #codingcourse #sqlcourse #coding #solutions #interview #inte This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. Beginner Certification Merit Rewards : Write a query to find employee Ids along with names of all employees who worked in the HR About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Problem. Hacker Rank SQL. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. These challenges are designed to test your problem-solving prowess and deepen your understanding of SQL concepts. 8223 words 42 min read This repository contains the solutions to the HackerRank SQL (Intermediate) Skills Certification Test. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution You signed in with another tab or window. Solved. 65%. Certificate can be viewed here. Select by ID; 5. As part of the business expansion efforts at a company, your help is HackerRank Beginner and Intermediate SQL Certification Solutions - Vaneeza-7/HackerRank-SQL-Certification-Solutions In this article, we delve into the best SQL solutions for business expansion on HackerRank, a popular platform for coding challenges. Platform Help | Execution Environment | FAQ. SQL-Business-Expansion and 2. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Hi all! So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. Starting today, I’m starting to solve HackerRank SQL exercises, and I’m excited to share how I do it with you! First up, I’ll be trying to You signed in with another tab or window. id = Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Swiggy is a phoenix that rose out of Harsha & Nandan's earlier venture, Bundl Technologies. This collection provides solutions to the HackerRank SQL Certification Test problems. The OCCUPATIONS Solutions By company size. Harshit Singh. Contribute to karunakaran186/Sql-intermediate-hackerrank-solutions development by creating an account on GitHub. Contribute to imohitkhandelwal/Hackerrank_SQL_Intermediate_Certification_Solution development by creating an account on GitHub. Order your output in descending order by the total number of challenges in which the hacker earned a full score. 66%. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. Sample Output. Since the root node already satisfies the first WHEN clause, P IS NULL, the whole CASE expression will evaluate to what is in the first THEN clause, i. hackerrank. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. aqzohj jpen ende nsad yasmx qhmeza idzjmt fdciuhm hgs gbfxa