Hackerrank sql basic solution It is very important that you all first give it Problem solved-5. Please signup or login in order to view this challenge. It is organized into six folders, each containing my solutions for easy, medium SQL Problem Statement: Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the A tag already exists with the provided branch name. In this article, I am going to share HackerRank SQL Solutions with you. Basic Select Queries-2|| -by Arka Bhowmik. Contains solved Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions. txt at main · mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. Query a list of CITY and STATE from the STATION table. 3 posts. Medium Max Score: 30 Success Rate: 91. SQL (Basic) #1 SQL: Merit Rewards On the basis of merit, a company decides to promote some of its employees in its HR division at the end of the quarter because of their high performance. roll_number having sum(b. subject_three) < 100; You signed in with another tab or window. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. Introduction to SQL. Ketty doesnโt want the NAMES of those students who received a grade lower than 8. Note: CITY. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: where LAT_N is the northern latitude and LONG_W is the western longitude. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. Harry Potter and his friends are at Ollivanderโs with Ron, finally replacing Charlieโs old broken wand. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Advisor_SQL. Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. SELECT DISTINCT CITY FROM STATION WHERE MOD(ID, 2) = 0; IX. There can be multiple ways of approaching solution to any problem. Editorial. I took the HackerRank test on 10/11/2023. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Problem solved-5. subject_one + b. Advanced Select My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - HackerRank_Solutions/SQL/Basic Select/Weather Observation Station 4. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions SELECT a. Advanced Select SQL Problem Statement: Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. name from student_information a inner join examination_marks b on a. The Problem. The solutions of all SQL hackerrank challenges using MySQL environment - HackerRank-SQL-Challenges-Solutions/Basic Join/Challenges. Listed below are the questions available in this repository. customer_id; Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. 0 | Permalink. Please donโt copy the code. txt at main · mahedei/Hackerrank-SQL-Basic-Skills-Certification Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. Basic Select Challenges. Activities involved: Setting up a database environment and understanding SQLโs purpose and use cases. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. ; This page contains solutions for all HackerRank SQL challenges which were passed successfully. SQL. country order by a. You signed out in another tab or window. 7 years ago + 26 comments. Advanced Select Solutions to Certification of Problem Solving Basic on Hackerrank - reebaseb/Hackerrank_ProblemSolvingBasic_Certificate_test-soltions Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions You signed in with another tab or window. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution: SQL Problem Statement: Julia asked her students to create some coding challenges. Adi The PM's Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. Query the number of ocurrences of each occupation in OCCUPATIONS. Solve Challenge. Revising the SQL query 2: Query the NAME field for all I have used MySQL and MS SQL Server for the solutions. Alternative Queries. Advanced Select SQL. Solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. 170+ solutions to Hackerrank. Number Challenges Solutions; 1: Revising the Select Query I: . You can use the code to make your 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 This collection provides solutions to the HackerRank SQL Certification Test problems. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. Blog; Scoring; Environment Hackerrank SQL Basic Solutions. Students contains three columns ID, Name and Marks. The CITY and SQL. Crack your coding interview and get hired. 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 The solution of HackerRank Python Basic Certification problem shape classes with area method and dominant cells is shared for your increasing knowledge. -- - Solution 2: Uses CTE to create master data and filters the CTE inside of where clauses. No comments. If more than one hacker achieved the same total score, then sort the Problem solved-5. 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. Write a query to print the hacker_id, name, and the total number of challenges created You signed in with another tab or window. HackerRank Menu Toggle. sql at main · chibui191/HackerRank_SQL_Solutions Problem. In this repository you will find my answers to the SQL challenges proposed in HackerRank, from basic to advanced level. SELECT DISTINCT CITY FROM STATION WHERE ID % 2 = 0; Its very easy and simple. 69%. . Please find the provided solutions for learning purposes only. They are necessary for writing simple SQL queries and understanding the core structure and flow of database operations. Advanced Select Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. Here I will try to provide multiple approaches & solutions to the same problem. Hard. Sort by. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. The goal of this repository is to document and share SQL queries that I have implemented to solve real-world scenarios and coding challenges. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. roll_number, a. All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. The SQL basic test on HackerRank evaluates fundamental SQL skills, including data retrieval, filtering, aggregation, and more. 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 You did such a great job helping Julia with her last coding contest challenge that she wants you to work on this one, too! The total score of a hacker is the sum of their maximum scores for all of the challenges. SELECT DISTINCT city FROM station WHERE ID % 2 =0; I DID THE SAME Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. country = b. Student Analysis SQL Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Topics SQL HackerRank Solutions. hackerrank. Easy. This repository includes solutions to the challenges presented in the test, providing a reference for anyone looking to improve their SQL skills. Arka Bhowmik · Follow. Code Issues Pull requests Solutions of SQL HackerRank Challenges. e. Breadcrumbs. Input Format. Return to all comments โ. Grades contains the following data:. SELECT DISTINCT(CITY) FROM STATION WHERE MOD (ID,2) = 0; 1 | Permalink. This SQL quiz covers These concepts cover the fundamental syntax and basic features of SQL. HackerRank concepts & solutions. 1) Revising ALL Problem: Query all columns (attributes) for every row in the CITY table. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. We use cookies to ensure you have the best browsing experience on our website. s2020266050. 1 week ago + 0 comments. roll_number,a. Coding----Follow. The Report. The HackerRank SQL Basic Certification is designed to test fundamental SQL concepts, such as querying databases, filtering data, and performing basic joins. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Population Census . mysql sql solutions hackerrank 317 efficient solutions to HackerRank problems. hacker_id, h. Basic Select. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Analysis_SQL. 2 Questions are Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. There are almost always multiple solutions to the same problem. mansiyadav200104. Ketty gives Eve a task to generate a report containing 317 efficient solutions to HackerRank problems. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. HackerRank: SQL - All solutions (Basic Select, Advanced Select, Aggregation, Basic Join, Advanced Join, Alternative Queries) Coursera: Machine Learning (Week 2) [Assignment Solution] - Andrew NG. com HackerRank Menu Toggle. Advanced Select. sql hackerrank-solutions hackerrank-sql-solutions hackerrank-basics. Binary Tree Nodes. The solutions cover a wide range of SQL challenges, I have tried to provide the complete solution with possible explanation to all SQL Practice problem on HackerRank. My SQL. roll_number = Inside you will find the solutions to all HackerRank SQL Questions. Medium. ; Medium: Intermediate-level SQL challenges. 1 Revising the Select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Contribute to sknsht/HackerRank development by creating an account on GitHub. About. ; Hard: Advanced-level SQL challenges. Medium SQL (Basic) Max Score: 30 Success Rate: 98. CountryCode and COUNTRY. Revising the Select Query I. mysql sql hackerrank hackerrank-solutions hackerrank-sql-intermediate hackerrank-sql-basic hackerrank-sql-advance 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. Sort your results by the total number of challenges in Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. The HackerRank SQL Advanced Certification is a great way to showcase your SQL expertise. Share. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. Julia asked her students to create some coding challenges. 10 Days of JavaScript; 10 Days of Statistics; 30 Days of Code; HackerRank Algorithms; HackerRank Linux Shell; HackerRank C; HackerRank C++; HackerRank Java; HackerRank Python; HackerRank Ruby; HackerRank SQL Basic - Count the Employees solution https://www. SELECT IF (GRADE < 8, NULL, NAME), GRADE, MARKS FROM STUDENTS JOIN GRADES WHERE MARKS BETWEEN In this repository, you will find updated SQL solutions for all HackerRank problems as of 2024. Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is โAsiaโ. sql. Hackerrank-Sql hackerrank sql basic certification solutions. phone_number) from customers as a left join country_codes as b on a. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Merit_ Rewards_SQL. . name, concat("+", b. Mar 31, 2024. SQL is a standard language for storing, manipulating and retrieving data in database. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Names of columns in the City Table. Solution: select * from CITY 2) Select by ID Why this video is 7. This is the only video you will need to improve you Solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. customer_id, a. 11 | Parent Permalink. Add a description, image, and links to the hackerrank-sql-solution topic page so that developers can more easily learn about it. Medium SQL (Basic) Max Score: 25 Success Rate: 98. HackerRank Sql Basic - Merit Rewards solutionhttps://www. My solutions to HackerRank's challenges in the SQL Preparation Kit - HackerRank_SQL_Solutions/Basic Join/population_census. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available in one attempt. subject_two + b. Write a query to print the hacker_id, name, and the total number of challenges created by each student. While solving all SQL problems from HackerRank, I came In this post, we will be covering all the solutions to SQL on the HackerRank platform. Use this. Advanced Join. Discussions. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. -- Note: CITY. Aggregation. Topics 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. 5 min read · Jun 16, 2024--Listen. Simple MySQL solution. 10 Days of JavaScript; 10 Days of Statistics; 30 Days of Code; HackerRank Algorithms; HackerRank Linux Shell; HackerRank C; HackerRank C++; HackerRank Java; HackerRank Python; HackerRank Ruby; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. com practice problems using Python 3, ะก++ and Oracle SQL - marinskiy/HackerrankPractice HackerRank concepts & solutions. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Full HackerRank SQL Basic Certification Solution Video Student Analysis SQL solution in SQL SELECT a. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Create a HackerRank account Be part of a 23 million-strong community of developers. Curate this topic Add this topic to your repo My solutions to HackerRank challenges. Reload to refresh your session. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. The Student Analysis SQL problem is a question presented in the HackerRank Basic SQL Certification exam. Unions-This competency includes using unions to display multiple sets of information My solutions to HackerRank problems. HackerRank / SQL / Basic Select / Employee Salaries / Solution. Share this post. Coursera: Machine The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. Medium SQL (Basic) Max Score: 30 Success Rate: 93. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions You signed in with another tab or window. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. -- HackerRank Note: -- - MUST USE MS SQL SERVER To use CTEs with MySQL. Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. : enclosed in parentheses). Code; Issues 0; Pull requests 0; Actions; Projects 0; Security; Insights Files main. Student analysis SQL solution- SELECT a. Code are matching key columns. SodumKarthik / Hackerrank-Sql-basic-solutions Public. name, Hackerrank Solutions Sql. You signed in with another tab or window. sql at main · Surabhi195/HackerRank-SQL-Challenges-Solutions Solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. For example: AnActorName(A), ADoctorName(D), AProfessorName(P), and ASingerName(S). - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. HackerRank-SQL-Basic -Certification test code - solution - country codes concatenated with their phone numbers- Solution -- Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is 'Asia'. - mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions My solutions to HackerRank problems. Certification; Gotham Coding; Student Analysis SQL HackerRank Solution. Advanced Select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. plpratyusha. md at master · adminazhar/hackerrank-SQL-basic-skills-certification-test-solution This repository contains solutions to various SQL challenges and problems solved on HackerRank. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. Write a query to print the hacker_id, name, and total score of the hackers ordered by the descending score. You can view my certificate by clicking the link below: View HackerRank Certificate Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Updated Apr 18, 2022; KursadKalender / HackerRank-SQL-Challenges-Solutions-Star 0. You can also visit: HackerRank C Language Solutions; 15 Days of Learning HackerRank concepts & solutions. com Complex joins-This competency includes using INNER, LEFT, RIGHT, and FULL joins on multiple tables and using joins for many-to-many relationships. Subdomains. 8 years ago + 59 comments. These solutions can You signed in with another tab or window. 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 Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. jianyliu. The questions typically involve retrieving data from Revising the Select Query I. The report must be in descending order by grade โ i. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non 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 certificate can be viewed here. Occupations. You are given two tables: Students and Grades. Weather Observation Station 19. Hackerrank SQL Basic certificate problems solution Structured Query Language (SQL) is one of the most important languages used in the industry. name FROM student_information a INNER JOIN examination_marks b ON a. - MartaCasdelg/SQL-HackerRank-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Hackerrank Solution. 317 efficient solutions to HackerRank problems. marinskiy. This repository contains solutions for Hacker Rank SQL problems. You switched accounts on another tab or window. Copy select * from CITY where POPULATION > 100000 and COUNTRYCODE = 'USA';. SELECT * FROM CITY WHERE COUNTRYCODE='USA' AND POPULATION > 100000; 2. I've achieved the SQL Basic Certification from HackerRank. 09%. Code are matching key columns HackerRank concepts & solutions. Revising the Select Query II Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. txt at main · mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions 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 ๐. You are viewing a single comment's thread. I started studying SQL from a very famous site - HackerRank. roll_number group by b. - hackerrank-SQL-basic-skills-certification-test-solution/README. Advanced Select You signed in with another tab or window. 60%. Problem. Here is Oracle solution from my HackerrankPractice repository: SELECT * FROM CITY WHERE COUNTRYCODE = ' USA ' AND Solutions to the SQL HackerRank challenges. Leaderboard. Notifications You must be signed in to change notification settings; Fork 0; Star 1. These problems are generated by HackerRank, but the solutions are provided by Niyander. ; Advanced: Expert-level problems and more complex queries. Ketty doesn't want the NAMES of those students who You signed in with another tab or window. 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: Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Submissions. Curate this topic Add this topic to your repo Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Weather You signed in with another tab or window. HackerRank SQL Solution-2. HackerRank solutions. Each solution includes a brief explanation of the problem and my approach to solving it. These questions not only tested my technical skills but also challenged me to think Solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. It will help you learn and understand SQL in a better way. Solution using Joins is faster although it uses much space but for time being space is not a constraint but time is , so using join is a faster and efficient way noy yours which we say nested select a. 1 week ago + 2 comments. - mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions About. country_code, a. 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. HackerRank is a platform for competitive coding. Written by Sonali jain. sql at master · 07Agarg/HackerRank_Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Advanced Select Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL - shanuhalli/MySQL-Basics-to-HackerRank Write a basic SQL query on the basis of given info: SELECT h. Blame. 68%. name FROM student_information a Problem solved-5. roll_number = b. Repo gathered by CodeRankGPT - Solve HackerRank coding problems during your coding interview, in real-time and undetectable ๐ 317 efficient solutions to HackerRank problems. Basic Join. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test ๐. Advanced Select The repository is organized as follows: Easy: Beginner-level SQL challenges. 1 minute read. These are not the only solutions. jre zksig hfrhn cxovhkp drf mhvhs zxxj jjol bnqxg kcp