Hackerrank sql basic solutions. 6 min read · Aug 19, 2023--1.

Hackerrank sql basic solutions : number of characters in the name). Cannot retrieve latest commit at this time. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Analysis_SQL. name from student_information a inner join examination_marks b on a. -- - Solution 2: Uses CTE to create master data and filters the CTE inside of where clauses. Code; Issues 0; Pull requests 0; Actions; Projects 0; Security; Insights Files main. Coding----Follow. Host and manage packages Security. -- HackerRank Note: -- - MUST USE MS SQL SERVER To use CTEs with MySQL. HackerRank là gì? Một số lưu ý cho người mới tham gia You signed in with another tab or window. subject_one + b. Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Solutions of more than 380 problems of Hackerrank across several domains. Only Ashley, Julia, and Belvet have Marks > 75. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Feb 11, 2022 · HackerRank là gì? 7 tips hoàn thành 58 SQL challenges từ dễ đến khó cho tất cả mọi người Đánh giá 3 bài tests: Basic – Inter – Advance về SQL của HackerRank I. Basic Select Challenges. These questions not only tested my technical skills but also challenged me to think critically. txt at main · mahedei/Hackerrank-SQL-Basic-Skills Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. The goal of this repository is to document and share SQL queries that I have implemented to solve real-world scenarios and coding challenges. Automate any workflow Packages. Feb 25, 2021 · HackerRank: SQL - All solutions (Basic Select, Advanced Select, Aggregation, Basic Join, Advanced Join, Alternative Queries) Coursera: Machine Learning - All weeks solutions [Assignment + Quiz] - Andrew NG 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. Jun 5, 2022 · Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available in one attempt. g. Basic Select. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Breadcrumbs. Problem. This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your #2 SQL: Profitable Stocks A stock is considered profitable if the predicted price is strictly greater than the current price. Number Challenges Solutions; 1: Revising the Select Query I: SQL: 2: Revising the Select Query II: SQL: 3: Select All: SQL: 4: Select By ID: SQL: 5: Sep 12, 2020 · 📗 Solutions of more than 380 problems of Hackerrank accross several domains. sql files with the respective solution. Explanation. sql at main · Surabhi195/HackerRank-SQL-Challenges-Solutions  · Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Listed below are the questions available in this repository. Welcome to the HackerRank SQL Problems repository! This collection features a variety of SQL challenges from HackerRank, designed to help you sharpen your SQL skills. Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be 170+ solutions to Hackerrank. Sep 5, 2024 · The HackerRank SQL Basic Certification is designed to test fundamental SQL concepts, such as querying databases, filtering data, and performing basic joins. Students contains three columns ID, Name and Marks. Toggle navigation. Curate this topic Add this topic to your repo To This page contains solutions for all HackerRank SQL challenges which were passed successfully. Hackerrank Solution. Mar 31, 2024 · Inside you will find the solutions to all HackerRank SQL Questions. Find and fix vulnerabilities You signed in with another tab or window. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. Jan 7, 2025 · HackerRank SQL Basic Certification Test Solutions I successfully completed the HackerRank SQL Basic Certification Test on 7th January 2025 . Aug 24, 2024 · 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. txt at main · mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Mar 31, 2024. All Solutions in Hackerrank SQL Section. phone_number) from customers as a left join country_codes as b on a. Editorial. Notes. Basic SQL Queries The solutions of all SQL hackerrank challenges using MySQL environment - HackerRank-SQL-Challenges-Solutions/Basic Join/Challenges. Ketty doesn’t want the NAMES of those students who received a grade lower than 8. Top. Student Analysis SQL Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. country_code, a. Revising the Select Query II Saved searches Use saved searches to filter your results more quickly Sep 21, 2022 · You signed in with another tab or window. Revising the Select Query I. Whether you're a beginner or an experienced developer, you'll find solutions and explanations for everything from basic queries to advanced data manipulation. The report must be in descending order by grade -- i. These exercises are designed to provide hands-on experience with common SQL tasks, from basic retrieval and filtering to more advanced concepts like joins window Sep 5, 2024 · The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. Notifications You must be signed in to change notification settings; Fork 0; Star 1. You can use the code to make your understanding clear. This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your increasing knowledge. sql. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Dec 23, 2024 · Problem. HackerRank is a platform for competitive coding. Sample Output. - mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions Hackerrank SQL Basic certificate problems solution Structured Query Language (SQL) is one of the most important languages used in the industry. The certificate can be viewed here. Blame. Saved searches Use saved searches to filter your results more quickly Nov 25, 2024 · The HackerRank SQL Advanced Certification is a great way to showcase your SQL expertise. SQL. A tag already exists with the provided branch name. 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. txt at main · mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions Oct 29, 2023 · I've achieved the SQL Basic Certification from HackerRank. - hackerrank-SQL-basic-skills-certification-test-solution/README. The questions typically involve retrieving data from Jul 18, 2024 · Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. Grades contains the following data:. Jul 20, 2020 · My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. Listen. Email. Certification; Gotham Coding; Student Analysis SQL HackerRank Solution. higher grades are entered first. You can find me on hackerrank here. name FROM student_information a INNER JOIN examination_marks b ON a. 3 posts. Overview Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Mar 10, 2021 · I started studying SQL from a very famous site - HackerRank. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. Verify your SQL Skills. Order your output in descending order by the total number of challenges in which the hacker earned a full score. country = b. You signed in with another tab or window. Copy select * from CITY where POPULATION > 100000 and COUNTRYCODE = 'USA';. Order your output in descending order by the total number of challenges in which the hacker earned a full score. Oct 11, 2023 · Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions. Occupations. Write a query to find the stock_codes of all the stocks which are profitable based on this definition. Skip to content. 09% Jul 24, 2024 · You signed in with another tab or window. My solutions to HackerRank's challenges in the SQL Preparation Kit - HackerRank_SQL_Solutions/Basic Join/population_census. Articles Works Shiny Snippets Resume About Contact. - JawadSher/SQL-Problems-Solutions-HackerRank Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Student analysis SQL solution- SELECT a. Number Challenges Solutions; 1: Revising the Select Query I: SQL: 2: Revising the Select Query II: SQL: 3: Select All: SQL: 4: Select By ID: SQL: 5: Japanese Cities' Attributes: SQL: 6: Mar 11, 2021 · SQL Problem Statement: Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Feb 25, 2021 · HackerRank: SQL - All solutions (Basic Select, Advanced Select, Aggregation, Basic Join, Advanced Join, Alternative Queries) Coursera: Machine Learning (Week 2) [Assignment Solution] - Andrew NG Coursera: Machine Learning - All weeks solutions [Assignment + Quiz] - Andrew NG You signed in with another tab or window. subject_one + You signed in with another tab or window. Code are matching key columns You signed in with another tab or window. Ashley Julia Belvet. ; Hard: Advanced-level SQL challenges. Open main menu. subject_three) < 100; My solutions to HackerRank challenges. Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Each test consists of two problems, and their solutions are Oct 11, 2023 · GitHub - MahedeiHasan/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions: Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. : enclosed in parentheses). Contains solutions for all Hackerrank Sql problems - Hackerrank-Sql-solutions/Basic Join -- Challenges at main · vmlrj02/Hackerrank-Sql-solutions Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - HackerRank_Solutions/SQL/Basic Select/Weather Observation Station 4. Will be adding SQL Advanced Questions soon in separate repo. Solutions to SQL Questions - HackerRank . Leaderboard. e. I have also earned a 5-star badge on HackerRank for SQL, Contribute to 23fiza/hackerrank-sql-basic-certification-test development by creating an account on GitHub. 1. Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. Solve Challenge. select a. The CITY table is described as follows: Create a HackerRank account My solutions to HackerRank problems. Reload to refresh your session. The report must be in 317 efficient solutions to HackerRank problems. Sort your results by the total number of challenges in descending order. About. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. Join me as I tackle challenges ranging from basic queries to advanced techniques! HackerRank-Solutions / SQL (Basic) Skill Test / Student analysis. Basic Select Queries|| -by Sakshi Jain Revising the SQL query 2: Apr 7, 2023 · Full HackerRank SQL Basic Certification Solution Video Student Analysis SQL solution in SQL SELECT a. 60%. 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. Ketty doesn't want the NAMES of those students who received a grade lower than 8. The problem description can be found as comments at the top of each file. roll_number = b. roll_number HAVING SUM(b. File metadata and controls. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. ; Each folder contains . name, Hackerrank Solutions Sql. -- Write a query to print the id, age, coins_needed, and power of the wands that Ron's interested in, -- sorted in order of descending power. roll_number group by b. Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. The Student Analysis SQL problem is a question presented in the HackerRank Basic SQL Certification exam. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Click here to see more codes for Raspberry Pi 3 and similar Family. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. The SQL basic test on HackerRank evaluates fundamental SQL skills, including data retrieval, filtering, aggregation, and more. Each solution is crafted to address a specific SQL problem from the HackerRank SQL challenge set, covering various aspects of SQL including querying, joins, aggregations, and more. roll_number, a. Learn from basic select, advanced select, aggregation, join, alternative queries and more. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. 6 min read · Aug 19, 2023--1. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. 8223 words 42 min read ––– views. You are given two tables: Students and Grades. Please signup or login in order to view this challenge. Hackerrank-SQL-Solutions. roll_number,a. -- Note: CITY. These solutions can be used as a reference for other learners or as a way to practice and improve SQL skills. Contribute to sknsht/HackerRank development by creating an account on GitHub. For example: AnActorName(A), ADoctorName(D), AProfessorName(P), and ASingerName(S). sql at main · chibui191/HackerRank_SQL_Solutions HackerRank concepts & solutions. -- If more than one 317 efficient solutions to HackerRank problems. roll_number GROUP BY b. sql at master · 07Agarg/HackerRank_Solutions 317 efficient solutions to HackerRank problems. sql at main · Pavith19/HackerRank-SQL-Challenges-Solutions 317 efficient solutions to HackerRank problems. Medium. Mar 7, 2023 · The problem. You can view my certificate by clicking the link below: View HackerRank Certificate Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Jun 15, 2024 · The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. Saved searches Use saved searches to filter your results more quickly Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Sign in Product Actions. Guestbook. There can be multiple ways of approaching solution to any problem. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. Each solution includes a brief explanation of the problem and my approach to solving it. Medium Max Score: 30 Success Rate: 91. Feel free to ask doubts in the comment section. Hard. Share. , MySQL, PostgreSQL) and connect to it using a SQL client. Mar 12, 2021 · SQL Problem Statement: 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. Raw. Query all columns (attributes) for every row in the CITY table. Hackerrank-Sql Mar 12, 2021 · SQL Problem Statement: Julia asked her students to create some coding challenges. All Solutions are made in the MSSQL Syntax. Mar 15, 2024 · Write a basic SQL query on the basis of given info: SELECT h. You can also visit: HackerRank C Language Solutions; 15 Days of Learning SQL – HackerRank Solution; Draw the Triangle 1 – HackerRank Solution; Draw The Triangle 2 – HackerRank Solution; Apr 7, 2023 · The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. HackerRank SQL Solutions 20 July 2020 Saved searches Use saved searches to filter your results more quickly Jul 22, 2024 · This repository contains solutions to all the HackerRank SQL Practice Questions - HackerRank-SQL-Challenges-Solutions/Basic Select/Weather Observation Station 12. Share this post. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Merit_ Rewards_SQL. 317 efficient solutions to HackerRank problems. It contains solutions to various SQL problems organized by topics, allowing users to enhance their SQL skills systematically. 1 minute read. If you look at the last three characters of each of their names, there are no Nov 2, 2022 · The Problem. 1 Revising the Select Query I SQL 2 Nov 4, 2023 · Sample Input. This repository includes solutions to the challenges presented in the test, providing a reference for anyone looking to improve their SQL skills. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Crack your coding interview and get hired. Activities involved: Setting up a database environment and understanding SQL’s purpose and use cases. View on GitHub Hackerrank. SELECT a. Click here to see more codes for NodeMCU ESP8266 and similar Family. Advanced Select Mar 14, 2023 · Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL - shanuhalli/MySQL-Basics-to-HackerRank Introduction to SQL. - kumod007/All-HackerRank-SQL-Challenges-Solutions Jun 20, 2020 · In this post, we will be covering all the solutions to SQL on the HackerRank platform. What is the HackerRank SQL Basic Certification? 1. Apr 22, 2021 · Click here to see solutions for all Machine Learning Coursera Assignments. . SatishDevv/HackerRank-SQL-Basic-Certification This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Here I will try to provide multiple approaches & solutions to the same problem. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution  · Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Sort by. This repository contains my solutions for the HackerRank SQL Certification Tests at Basic, Intermediate, and Advanced levels. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution This repository contains solutions to various SQL challenges and problems solved on HackerRank. Contains solutions for all Hackerrank Sql problems - Hackerrank-Sql-solutions/Basic Join -- Population Census at main · vmlrj02/Hackerrank-Sql-solutions SodumKarthik / Hackerrank-Sql-basic-solutions Public. Mar 13, 2024 · 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. ; Advanced: Expert-level problems and more complex queries. Please don’t copy the code. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Jun 3, 2022 · Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. BCA 317 efficient solutions to HackerRank problems. Easy. Subdomains. subject_two + b. Create a HackerRank account Be part of a 23 million-strong community of developers. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice SQL. : number of characters in the Jul 24, 2023 · mysql sql hackerrank hackerrank-solutions hackerrank-sql-intermediate hackerrank-sql-basic hackerrank-sql-advance Updated Jul 25, 2023; Improve this page Add a description, image, and links to the hackerrank-sql-basic topic page so that developers can more easily learn about it. Apr 7, 2023 · HackerRank SQL Basic Certification Solutions – FREE SQL Certification Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available Azhar Khan  · All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Please find the provided solutions for learning purposes only. Advanced Select 6 days ago · In this repository you will find my answers to the SQL challenges proposed in HackerRank, from basic to advanced level. Example Task: Install a relational database (e. hackerrank sql basic certification solutions. Navigation Menu Niltimn/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions. HackerRank concepts & solutions. It is organized into six folders, each containing my If any new questions comes other than these, make sure to create PR/Issue. This commit does not belong to any branch on this repository, and may belong to a fork outside of the Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Published on November 5, 2020. 1 lines (1 loc) · 209 Bytes. md at master · adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Nov 5, 2020 · Post displaying HackerRank sql problem solving questions and solution. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. ; Medium: Intermediate-level SQL challenges. It will help you learn and understand SQL in a better way. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. . customer_id; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Problem solved-5. Oct 11, 2023 · Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Select All. Write a query to print the hacker_id, name, and the total number of challenges created by each student. - mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions You signed in with another tab or window. Topics Jul 5, 2024 · Contribute to Niltimn/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions development by creating an account on GitHub. Each link leads to the document containing both, the question statement and the answer, written in MS SQL Server (except for two short problems that were written in Saved searches Use saved searches to filter your results more quickly Dec 27, 2024 · HackerRank SQL Solution - Basic Select - Weather Observation Station 5 Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. hacker_id, h. It is very important that you all first give it a try & brainstorm yourselves before having Jun 2, 2024 · Contribute to Z0ntaro/hackerrank-SQL-basic-skills-certification-test-solution-master development by creating an account on GitHub. 🎓 Certificate : View my Sep 5, 2024 · In this guide, we’ll break down 5 powerful solutions to help you solve common problems in the certification exam, giving you the confidence to pass with flying colors. subject_two + b Jul 4, 2024 · The repository is organized as follows: Easy: Beginner-level SQL challenges. roll_number having sum(b. CountryCode and COUNTRY. Code. name, concat("+", b. HackerRank SQL Problem Solving Questions With Solutions # Related Topics: SQL SQL-Problem-Solving HackerRank. country order by a. Medium SQL (Basic) Max Score: 30 Success Rate: 93. Discussions. Navigation Menu Z0ntaro/hackerrank-SQL-basic-skills-certification-test-solution-master. Mar 12, 2024 · 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. You signed out in another tab or window. I will try my best to Aug 19, 2023 · HackerRank SQL Solution. Written by Sonali jain. Query all columns for every row in a table. 2 Questions are Apr 7, 2023 · The Student Analysis SQL problem is a question presented in the HackerRank Basic SQL Certification exam. Copy link. SQL is a standard language for storing, manipulating and retrieving data in database. Solutions to the SQL HackerRank challenges. Write a query to print the id, age, coins_needed, and power of the wands that Ron’s interested in, Oct 22, 2024 · So, in this free SQL exercises page, we'll cover a series of SQL practice exercises covering a wide range of topics suitable for beginners, intermediate, and advanced SQL learners. Accelerate your Job Search. Submissions. Add a description, image, and links to the hackerrank-sql-solution topic page so that developers can more easily learn about it. Automated the process of adding solutions using Hackerrank Solution Crawler. Reason: Fundamental setup and understanding are necessary to start writing SQL queries. customer_id, a. Problem Apr 22, 2021 · Find complete solutions with explanations for all SQL practice problems on HackerRank. Sakshi Jain · Follow. Curate this topic Add this topic to your repo Apr 11, 2024 · This repository contains a solution for hackerrank-SQL-basic-skills-certification-test - Alien166/hackerrank-SQL-basic-skills-certification-test-solution. I hope this Apr 7, 2023 · The solution of HackerRank Python Basic Certification problem shape classes with area method and dominant cells is shared for your increasing knowledge. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions 317 efficient solutions to HackerRank problems. No comments. Query the number of ocurrences of each You signed in with another tab or window. Adi The PM's Substack. Topics Aug 12, 2022 · Instead of reviewing basic database definitions and concepts, this article will challenge you with seven advanced SQL interview question examples you need to be familiar with to land your next dream job. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Advisor_SQL. Apr 24, 2023 · -- to buy each non-evil wand of high power and age. Advanced Select Apr 24, 2023 · -- Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is 'Asia'. We use cookies to ensure you have the best browsing experience on our website. 22 Followers 317 efficient solutions to HackerRank problems. I took the HackerRank test on 10/11/2023. Facebook. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. You switched accounts on another tab or window. kvfr xjp fmkie daw gqaz kqcdukd dmtruxo fjfx recpx adnbrf