Customer spending sql hackerrank solution mysql. Find and fix vulnerabilities Actions.
Customer spending sql hackerrank solution mysql CITY Solution – Average Population in SQL MySQL select floor(avg(population)) from city; Disclaimer: The above Problem (Average Population) is generated by Hacker Rank but the Solution is Provided by CodingBroz. CONCAT(N, ' Inner'). Updated Oct 11, 2023; Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. cochiseandcumbria • Additional comment actions. Skip to content. HackerRank is a platform for competitive coding. Navigation Menu Toggle navigation. 58 SQL-Hackerrank challenge solutions for DB2, MySQL, Oracle, and MS SQL Server. Please check 1. )? – NickW Commented Jul 4, 2022 at 12:53 Problem. Contribute to omonimus1/HackerRank-Solutions development by creating an account on Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Hackerrank SQL advanced certification . Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. The questions asked are Invoices Per Country and Product Sales Per City. customer_name, CAST (SUM (i. My code for this challenge is in MySQL: SELECT c. 1 day ago + 0 comments. I have been looking online for some help with totaling queries but couldn't find any good examples. customer_name, CAST(SUM(i. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. . Improve this question. SELECT P. 6 hours ago + 0 comments-- creating a view for hacker id, name and no of challenges. Leaderboard . SQL. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on You signed in with another tab or window. Find and fix I am trying to find which top 10 customers have spent most money in the store. This repository contains my solutions for the HackerRank intermediate-level problems using MySQL. ohyongxiang. I've managed to create a query that lists all customers and how much revenue they generated. Reply ComicOzzy datetime manipulator • Additional comment actions. total_price<= (SELECT (0. These challenges cover a wide range of programming topics and are designed to assess and validate your coding skills. Ok | Prepare; Certify; Compete; Apply; Hiring developers? Log In; Sign Up; Prepare. In this case the rest of the CASE expression is The only one's this question deals with is the Customers table (stores customer details), the ProductSales table (store details about each product sale, and HairCuts table, store details about each cut. The HackerRank Question is here. sql files for the solutions I submitted! Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. - Ishika63/HackerRank-SQL-Intermediate-Solution. sql and 2. Follow This repository contains MySQL solutions of the Hackerrank SQL Intermediate questions - 007aneesh/Hackerrank-SQL-Intermediate-Solutions. Challenges. x, paired_functions. This repository is complete and contains solutions to all the HackerRank SQL Practice Questions of all difficulty types. Customer Spending. 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. hacker_id) as cnt FROM hackers h INNER JOIN challenges c ON h. Sample Output. recency | 1463 Discussions| Please Login in order to post a comment. 25*AVG(invoice. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. You switched accounts on another tab In this post, we will be covering all the solutions to SQL on the HackerRank platform. Feel free to explore the solutions and the approach I took to solve these challenges. Write better code with AI Security. If you find them helpful This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. RodneyShag. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. Effective solutions to hackerrank. 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 Inside you will find the solutions to all HackerRank SQL Questions. I need to add up all purchases for each customer and put them in descending order. Sign in Product GitHub Copilot. Solution Example of Hackrank of my-sql. total_price), 6) AS amount_spent FROM customer c JOIN invoice i ON c. P(R) represents a pattern drawn by Julia in R rows. ” I used the MySQL option on the platform to solve each of the challenges. supriya22399. About. Basic Join. Updated Jan 26, 2021; pankajkumarravi / SQL-Hackerrank. sql at main · arknf/SQL-Challenges. The case (uppercase Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. ________ Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. By detailing sales figures per city and This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. You switched accounts on another tab or window. Use SQL to hackerrank sql certification solutions. In case of clash, chose the less costly product In case of clash, chose the less costly product SELECT Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. 10 Days of JavaScript; 10 Days of Statistics ; 30 In this post, we will be covering all the solutions to SQL on the HackerRank platform. 8223 words 42 min read Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. customerId GROUP BY Customers. Submissions. Crack LeetCode SQL Interview Questions. total_price) AS DECIMAL (9,6)) You signed in with another tab or window. Make your changes, add new features, or fix issues. Weather Observation Station 4 | Easy | HackerRank Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. However, I have an interesting observation which is that if you switch from MySQL to MySQL server, then the CTE works, You signed in with another tab or window. Certification; Gotham Coding; Student Analysis SQL HackerRank Solution. Samantha Julia Scarlet Explanation. I was not able to solve it at all. hacker_id = c. This table has date of sale and customer id as well. The customer ids of interest are 3 and 4. mysql challenge sql hackerrank mysql-database hackerrank-solutions hackerrank-sql hackerrank-sql-solutions. Updated Nov All Solutions in Hackerrank SQL Section. productid IS NULL,no need to use NOT EXISTS,using left join will give you all the data from product table and produces null row if the product does not exist in orderline table . Sep 11, 2024. 4 posts. com/dev. Automate any workflow Security. Population Census . The repository contains 6 folders. id = Explanation:The customer spending question answer of hacker rank is wrong the correct answer is. Please read our cookie policy for more information about how we use cookies. SELECT p. Automate any workflow Codespaces. You signed in with another tab or window. Reload to refresh your session. This is an intermediate SQL Problem. 8 years ago + 36 comments. 19. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. Share this post. Sort by. HackerRank SQL Challenge Solutions . The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions SQL. x, first_function. instagram. Date. I'm trying to calculate the total purchase amount of each customer from the database available online on W3 Schools. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Return to all comments →. id is null Second SQL returns this list --> All products that were not sold . 10 Days of JavaScript; 10 Days of SQL. Discussions. CodingBroz Coding Made Simple Home; Blog; Coding Tips; HackerRank Menu Toggle. sql files for the solutions I submitted! ##Question 1--> Product Without Sales. Sign in Product GitHub This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Hacker Rank SQL. Customer Stories Partners Executive Insights github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank-certificatio hackerrank-sql-certificate hackerrank-sql-solution hackerrank-intermediate-sql. Customer Stories Partners github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank-certificatio hackerrank-sql-certificate hackerrank-sql-solution hackerrank-intermediate-sql. We use cookies to ensure you have the best browsing experience on our website. customer_id=customer. It is very important that you all first give it a try & brainstorm yourselves before having a This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I faced during the test. Contest Leaderboard. It is very important that you all first give it a try & brainstorm yourselves before having a In this post, I’ll share my solutions to some SQL problems on HackerRank, categorized as “Easy. - SQL-Hackerrank-Challenge-Solutions/Advanced Select/Occupations. Plan and track work Code Review. Here is a solution for your problem: SELECT customers. Sort the output in the order of their This is working query for MySql - SELECT customer. POPULATION) FROM CITY, COUNTRY WHERE CITY. Guestbook. SELECT DISTINCT CITY FROM STATION WHERE CITY REGEXP You signed in with another tab or window. Leaderboard. Find and fix vulnerabilities Codespaces. I have two separate queries that work fine. Mar 31, 2024. Each one I encountered a similar situation where my CTE didn't work in HackerRank's MySQL environment. Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu In this post, I’ll share my solutions to some SQL problems on HackerRank, categorized as “Easy. Order Problem. These solutions were completed during a test on August 21, 2023. Updated Jul 25, 2023; Improve this page Add a description, image, and links to the hackerrank-sql-intermediate topic page so that The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu HackerRank Solutions in SQL Welcome to the HackerRank Solutions repository, where you can find comprehensive solutions to various HackerRank problems implemented in SQL. September 14, 2023 . It will help you learn and understand SQL in a better way. Schema. Can anyone help? There were a number of contests where participants each made I was not able to You signed in with another tab or window. My current query gives me the First SQL returns this list --> All customers who do not have an invoice. y FROM (SELECT first_function. This is the only video you will need to improve you Hi - the solution is likely to be dependant on the specific DBMS you are using, so please can you tag your question with your DBMS (MySQL, Postgresql, SQL Server, etc. My Solutions for SQL Challenges on Hackerrank and LeetCode - arknf/SQL-Challenges . Write better code About. Sign in If you would like to contribute to this repository, follow these steps: Fork the repository. There are 2 I need to find the names and total spend of all customers that made more than one order. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. e. Topics HackerRank concepts & solutions. OrderDetails. 3 days ago + 0 comments. Open main menu. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. Customer Spending. I started studying SQL from a very famous site - HackerRank. The test consisted of two questions that I had 35 minutes to solve. MySQL solution. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Each solution includes a brief explanation of the problem and my approach to solving it. - amalmosai/SQL-HackerRank-Solutions Packages. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Customer Stories Partners Executive Insights Open Source GitHub Sponsors Welcome to the HackerRank SQL Solutions Repository! This repository contains my solutions to various SQL challenges from HackerRank. hacker_id as id, h. Fariha Shah. For instance, the first 5 rows should have a total of 180. Find how many products falls into customer budget along with list of products. Instant dev environments Issues. My Solutions for SQL Challenges on Hackerrank and LeetCode - SQL-Challenges/Customer Placing the Largest Number of Orders. Instant dev environments Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. For now, I'm returning all the rows to PHP, doing a sort, and then picking the middle row, but surely there must be some simple way of doing it in a single MySQL query. unitcost*lineitems. - qanhnn12/SQL-Hackerrank-Challenge-Solutions. 596. Advanced Join. See Answer See Answer See Answer done loading. Contribute to ejaj/SQL development by creating an account on GitHub. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. 7 years ago + 22 comments. The tables I'm using are: Customers. SELECT SUM (CITY. recency | 2137 Discussions| Please Login in order to post a comment. custID=customers. This repository contains python solutions for some of the HackerRank problems from the SQL genre. For example, get all customers who spent between 100 and 1000, between 2016-07-01 and 2016-08 Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Weather Observation Station 9. Hackerrank Certification Nerdy SQL - Intermediate. Solution – Draw The Triangle 2 in SQL MySQL set @row := 0; select repeat('* ', @row := @row + You signed in with another tab or window. Question: Using MySQL, write a query to List all customers who Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Amount is money spent on 1 purchase. 55; Julia’s best friend got offered a higher salary than her at 12. These folders contain solutions for all easy, medium and difficult challenges executed Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. quantity) AS "total_spent" FROM orders INNER JOIN customers ON orders. valsze. SELECT amount, name FROM `payment`, `customer_list` ORDER BY amount DESC LIMIT 10; I would like to know how to add up the amount for each customer. Basic Select. customer_id GROUP BY c. 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. SELECT DISTINCT paired_functions. WITH max_scores AS ( SELECT hacker_id, challenge_id, MAX(score) AS max_score FROM Submissions GROUP realNameHiddenRevising the Select Query I Hackerrank SQL Solution*****If You want Query Click Here: https://realnamehidde This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. Edit: I realized my suggestion would overlook multiple customers with the same total spending amount. All Solutions are made in the MSSQL Syntax. ##Question 2--> Customer Spending github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank-certificatio Post displaying HackerRank sql problem solving questions and solution. Learn about basic MySQL and My solutions to various HackerRank SQL problems using This repository contains my solutions to various HackerRank certification challenges. Published on November 5, 2020 . Hackerrank is Hello coders, today we are going to solve Challenges HackerRank Solution in SQL. Classes More Than 5 Students. SELECT c. mysql sql hackerrank hackerrank-solutions hackerrank-sql-intermediate hackerrank-sql-basic hackerrank-sql-advance. From my HackerRank solutions. select 'customer' as category, c. After your test cases get passed!!!! Happy Learning!!!! Hello coders, today we are going to solve Print Prime Numbers HackerRank Solution in SQL. name, COUNT(*) as number_of_invoices FROM invoices INNER JOIN orders ON invoices. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non SQL. 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. Now, Samantha’s best friend got offered a higher salary than her at 11. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Symmetric Pairs. Navigation Menu Toggle HackerRank MySQL challenge solution in the MySQL Advance Track - GitHub - hammad-ali-shah/SQL: HackerRank MySQL challenge solution in the MySQL Advance Track Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL - shanuhalli/MySQL-Basics-to-HackerRank. In this video I am solving the intermediate Certification Skills Test on Hackerrank. Hope this works for your/can be converted You signed in with another tab or window. Author. Navigation Menu Toggle navigation . Code Issues Pull requests This repo You signed in with another tab or window. The STATION table is described as Saved searches Use saved searches to filter your results more quickly Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. For each customer, display their name and the amount spent to 6 decimal places. total_price AS DECIMAL(10,6)) Amount FROM customer INNER JOIN invoice ON invoice. Adi The PM's The customer spending question answer of hacker rank is wrong the correct answer is SELECT c. You signed out in another tab or window. Write better code You signed in with another tab or window. customer_id where i. What's the simplest (and hopefully not too slow) way to calculate the median with MySQL? I've used AVG(x) for finding the mean, but I'm having a hard time finding a simple way of calculating the median. 1 minute read. I need a query that will list the total spent on both hair cuts and products for each customer in the customers table. Problem. select 'product' as category, p. id as id, customer_name as name from customer c left join invoice i on c. custID GROUP BY firstname HAVING COUNT(DISTINCT orderID)>1 LIMIT 0,30 mysql; sql; Share. Order the result by the amount spent from high to low. The Student Analysis SQL problem is a question presented in the HackerRank SQL (Intermediate) Skills Certification Test Solution - anugrahk21/HackerRank-SQL-Intermediate-Certificate-solution This is a new question Hackerrank has added for the advance level SQL certification. Products. I've reworked it to use MAX and show multiple customers (if applicable). The output column headers should be Doctor, Professor, Singer, and Actor, If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. My own HackerRank coding interview solutions. No comments. Crystal X. You are viewing a single comment's thread. Problem 1. Business Expansion. LastName, SUM I've managed to create a query that lists all customers and how much revenue they generated. The following pattern represents P(5):. Hacker rank SQL intermediate solution. id as id, product_name as name from product p left join Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. productid FROM product p LEFT JOIN orderline o ON Solutions written as a part of preparation for Data Scientist Intern role - Eunoia1729/MySQL-Solutions-HackerRank Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Write better code 19. Create a new branch for your contribution. Product Without Sales. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. orderId = orders. The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment. Sign in Product Actions. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. HackerRank SQL Problems and Solutions — 1. Write a SQL query to find all customers who never order anything. The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled. Any help would be wonderful! Thank you (I am pretty new to SQL and with cte1 as (select D, row_number() over() as row_num from (select case when occupation like 'Doctor' then name end as D from occupations group by D order by D) as F where D is not null), Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. id = i. custome Customer Stories Partners Executive Insights Open Source GitHub Sponsors SQL HackerRank Solutions. community/OVER ([PARTITION BY columns] [ORDER BY columns])https://learnsql. Plan and track work Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. 40. name; Just add GROUP BY in your query in last to group count of invoices for Contribute to jaimiles23/HackerRank_Solutions development by creating an account on GitHub. Please follow us https://www. total_price)) FROM invoice ) GROUP BY Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Contribute to hetvi20/hackerrank-solution-mysql development by creating an account on GitHub. sql files for the solutions I Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. Business Expansion. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Manage code changes Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution I have to determine which customer generated the most total revenue. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution . These solutions can 170+ solutions to Hackerrank. Write a query to print the pattern P(20). Here I will try to provide multiple approaches & solutions to the same problem. customer_name,CAST(invoice. Plan and track work Why this video is 7. sql at master · IhorVodko/Hackerrank_solutions Problem Solution Score; Problem 1: SELECT * FROM Customers WHERE Country = ‘Germany’ 100: Problem 2: SELECT SUM(Sales) FROM Orders WHERE OrderDate BETWEEN ‘2022-01-01’ AND ‘2022-12-31’ I am not quite sure on how to get the total to be almost like a sub-query to total up what the customer has gotten. customer_name, FORMAT(SUM(i. Hackerrank SQL Solution #1Intermediate SQL - Weather Observation Station 5#sql #hackerrank #hackerrankcourse #codingcourse #sqlcourse #coding #solutions #int Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. y FROM (SELECT x, y, SQL. com practice problems in C++, python and SQL - Hackerrank_solutions/SQL/15 Days of Learning SQL. I am looking for a way to select all those customers who have total spending in the specified range with in a specified date range. SOLUTION: SELECT c. Watch also my other videos for more SQL Certification Solutions. 317 efficient solutions to HackerRank problems. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Give a star For my work. orderId INNER JOIN customers ON orders. Skip to content . Articles Works Shiny Snippets Resume About Contact. Each challenge has a Country code | hackerrank Mysql certification solution Write a query to retrieve a list of all customer ids, names, and phone numbers, with their country codes concatenated with their phone numbers. Star 0. List all customers who spent 25% or less than the average amount spent on all invoices. 12; Scarlet’s best friend got I have a sales table which has one row for each sales tranaction. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Skip to content Navigation Menu Most of the things you need to know about SQL. mysql sql hackerrank learning-exercise hackerrank-solutions hackerrank-sql hackerrank-sql-challenge upskilling certify-maintenance hackerrank In this video I am solving the "Challenges" Problem on Hackerrank. HackerRank concepts & solutions. Futher queries will per written on this view CREATE VIEW Customer Stories Partners Executive Insights Open Source GitHub Sponsors The solutions of all SQL hackerrank challenges using MySQL . Sep 15, 2024. customerId = customers. SELECT SUM(items. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. id WHERE invoice. name as name, COUNT(c. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions In this Leetcode Customers Who Never Order problem solution Suppose that a website contains two tables, the Customers table, and the Orders table. Whether you are a beginner or an experienced coder, this repository aims to provide clear and efficient solutions to help you improve your problem-solving skills. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. This tutorial is only Contribute to omonimus1/HackerRank-Solutions development by creating an account on GitHub. This repository provides comprehensive solutions to all HackerRank SQL Practice Questions, implemented using a MySQL environment. Probably not, but it can't hurt if you have it. Find and fix vulnerabilities Actions. They weren't the best, but they worked! :) They weren't the best, but they worked! SUBDOMAINS: HackerRank concepts & solutions. Orders. Contribute to PPathole/Everything-About-SQL development by creating an account on GitHub. recency | 2463 Discussions| Please Login in order to post a comment. total_price) AS DECIMAL(9,6)) AS total FROM customer c INNER JOIN invoice i ON c. Akzhol. FirstName, P. com/blog/sql-over . - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions . These are not the only solutions. Is Hackerrank SQL advanced certification useful for job applications? comments sorted by Best Top New Controversial Q&A Add a Comment. There are almost always multiple solutions to the same problem. _____ SUBSCRIBE I have used MySQL and MS SQL Server for the solutions. 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.
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