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Hackerrank sql basic solution These questions not only tested my technical skills but also challenged me to think Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. You are viewing a single comment's thread. Solution: select * from CITY 2) Select by ID Why this video is 7. HackerRank SQL Solution-2. Students contains three columns ID, Name and Marks. - 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. 317 efficient solutions to HackerRank problems. Updated Apr 18, 2022; KursadKalender / HackerRank-SQL-Challenges-Solutions-Star 0. Aggregation. Arka Bhowmik · Follow. The goal of this repository is to document and share SQL queries that I have implemented to solve real-world scenarios and coding challenges. ; Hard: Advanced-level SQL challenges. Advanced Select You signed in with another tab or window. Leaderboard. I started studying SQL from a very famous site - HackerRank. Simple MySQL solution. Binary Tree Nodes. 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. Blog; Scoring; Environment Hackerrank SQL Basic Solutions. They are necessary for writing simple SQL queries and understanding the core structure and flow of database operations. Curate this topic Add this topic to your repo My solutions to HackerRank challenges. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions You signed in with another tab or window. customer_id; Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. sql. Revising the SQL query 2: Query the NAME field for all I have used MySQL and MS SQL Server for the solutions. Advanced Select The repository is organized as follows: Easy: Beginner-level SQL challenges. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. 7 years ago + 26 comments. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. roll_number, a. SQL. 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. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. sql at main · chibui191/HackerRank_SQL_Solutions Problem. Grades contains the following data:. Mar 31, 2024. Repo gathered by CodeRankGPT - Solve HackerRank coding problems during your coding interview, in real-time and undetectable 😎 317 efficient solutions to HackerRank problems. Number Challenges Solutions; 1: Revising the Select Query I: . 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. Reload to refresh your session. HackerRank solutions. country order by a. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Full HackerRank SQL Basic Certification Solution Video Student Analysis SQL solution in SQL SELECT a. 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. Activities involved: Setting up a database environment and understanding SQL’s purpose and use cases. HackerRank / SQL / Basic Select / Employee Salaries / Solution. 1 week ago + 2 comments. The questions typically involve retrieving data from Revising the Select Query I. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. 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. 0 | Permalink. 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. Input Format. 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. Write a query to print the hacker_id, name, and the total number of challenges created by each student. -- HackerRank Note: -- - MUST USE MS SQL SERVER To use CTEs with MySQL. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. HackerRank Sql Basic - Merit Rewards solutionhttps://www. mysql sql solutions hackerrank 317 efficient solutions to HackerRank problems. Written by Sonali jain. roll_number having sum(b. Medium SQL (Basic) Max Score: 25 Success Rate: 98. 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'. Ketty gives Eve a task to generate a report containing 317 efficient solutions to HackerRank problems. 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. 5 min read · Jun 16, 2024--Listen. -- Note: CITY. 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. SELECT DISTINCT CITY FROM STATION WHERE ID % 2 = 0; Its very easy and simple. ; Medium: Intermediate-level SQL challenges. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Problem solved-5. Problem. hackerrank. Alternative Queries. 8 years ago + 59 comments. Blame. SQL is a standard language for storing, manipulating and retrieving data in database. Medium SQL (Basic) Max Score: 30 Success Rate: 98. 170+ solutions to Hackerrank. Basic Join. The HackerRank SQL Basic Certification is designed to test fundamental SQL concepts, such as querying databases, filtering data, and performing basic joins. mansiyadav200104. Code are matching key columns HackerRank concepts & solutions. 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. The Problem. Write a query to print the hacker_id, name, and the total number of challenges created You signed in with another tab or window. No comments. Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. I've achieved the SQL Basic Certification from HackerRank. Query the number of ocurrences of each occupation in OCCUPATIONS. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Please don’t copy the code. Adi The PM's Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. name from student_information a inner join examination_marks b on a. Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Copy select * from CITY where POPULATION > 100000 and COUNTRYCODE = 'USA';. Certification; Gotham Coding; Student Analysis SQL HackerRank Solution. You signed in with another tab or window. 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. You switched accounts on another tab or window. phone_number) from customers as a left join country_codes as b on a. These solutions can You signed in with another tab or window. Ketty doesn’t want the NAMES of those students who received a grade lower than 8. Contains solved Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions. You signed out in another tab or window. ; Advanced: Expert-level problems and more complex queries. roll_number,a. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. It is very important that you all first give it Problem solved-5. The SQL basic test on HackerRank evaluates fundamental SQL skills, including data retrieval, filtering, aggregation, and more. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions SELECT a. Basic Select Queries-2|| -by Arka Bhowmik. SodumKarthik / Hackerrank-Sql-basic-solutions Public. Please signup or login in order to view this challenge. - 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. Listed below are the questions available in this repository. 1 minute read. 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. name, concat("+", b. - mahedei/Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions My solutions to HackerRank problems. We use cookies to ensure you have the best browsing experience on our website. 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. 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 🎓. 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. 11 | Parent Permalink. Hackerrank Solution. 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 🎓. 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. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Analysis_SQL. 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. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Student_ Advisor_SQL. Share this post. 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. s2020266050. HackerRank: SQL - All solutions (Basic Select, Advanced Select, Aggregation, Basic Join, Advanced Join, Alternative Queries) Coursera: Machine Learning (Week 2) [Assignment Solution] - Andrew NG. 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. Here I will try to provide multiple approaches & solutions to the same problem. customer_id, a. 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. In this repository you will find my answers to the SQL challenges proposed in HackerRank, from basic to advanced level. You can also visit: HackerRank C Language Solutions; 15 Days of Learning HackerRank concepts & solutions. Weather You signed in with another tab or window. name FROM student_information a Problem solved-5. sql hackerrank-solutions hackerrank-sql-solutions hackerrank-basics. 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. Population Census . md at master · adminazhar/hackerrank-SQL-basic-skills-certification-test-solution This repository contains solutions to various SQL challenges and problems solved on HackerRank. Code are matching key columns. For example: AnActorName(A), ADoctorName(D), AProfessorName(P), and ASingerName(S). Hackerrank-Sql hackerrank sql basic certification solutions. The Student Analysis SQL problem is a question presented in the HackerRank Basic SQL Certification exam. In this article, I am going to share HackerRank SQL Solutions with you. 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. The solutions of all SQL hackerrank challenges using MySQL environment - HackerRank-SQL-Challenges-Solutions/Basic Join/Challenges. com Complex joins-This competency includes using INNER, LEFT, RIGHT, and FULL joins on multiple tables and using joins for many-to-many relationships. country = b. Each solution includes a brief explanation of the problem and my approach to solving it. name FROM student_information a INNER JOIN examination_marks b ON a. Advanced Select. subject_one + b. 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. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Student analysis SQL solution- SELECT a. 68%. - Hackerrank-SQL-Basic-Skills-Certification-Test-Solutions/Merit_ Rewards_SQL. Add a description, image, and links to the hackerrank-sql-solution topic page so that developers can more easily learn about it. Unions-This competency includes using unions to display multiple sets of information My solutions to HackerRank problems. It will help you learn and understand SQL in a better way. This SQL quiz covers These concepts cover the fundamental syntax and basic features of SQL. com HackerRank Menu Toggle. Advanced Select My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - HackerRank_Solutions/SQL/Basic Select/Weather Observation Station 4. Advanced Select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. roll_number = b. roll_number group by b. Return to all comments →. ; This page contains solutions for all HackerRank SQL challenges which were passed successfully. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. 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. HackerRank is a platform for competitive coding. These are not the only solutions. Coding----Follow. subject_three) < 100; You signed in with another tab or window. Create a HackerRank account Be part of a 23 million-strong community of developers. This repository includes solutions to the challenges presented in the test, providing a reference for anyone looking to improve their SQL skills. My solutions to HackerRank's challenges in the SQL Preparation Kit - HackerRank_SQL_Solutions/Basic Join/population_census. marinskiy. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. I took the HackerRank test on 10/11/2023. The certificate can be viewed here. HackerRank concepts & solutions. Contribute to sknsht/HackerRank development by creating an account on GitHub. 1) Revising ALL Problem: Query all columns (attributes) for every row in the CITY table. subject_two + b. : enclosed in parentheses). . If more than one hacker achieved the same total score, then sort the Problem solved-5. Occupations. 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. 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. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Here is Oracle solution from my HackerrankPractice repository: SELECT * FROM CITY WHERE COUNTRYCODE = ' USA ' AND Solutions to the SQL HackerRank challenges. - 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. This repository contains solutions for Hacker Rank SQL problems. e. The Report. Share. Code Issues Pull requests Solutions of SQL HackerRank Challenges. Editorial. Advanced Select SQL Problem Statement: Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. name, Hackerrank Solutions 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. Submissions. These problems are generated by HackerRank, but the solutions are provided by Niyander. 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. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. Medium Max Score: 30 Success Rate: 91. Subdomains. You are given two tables: Students and Grades. Sort by. Topics SQL HackerRank Solutions. This is the only video you will need to improve you Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Solve Challenge. 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. Medium SQL (Basic) Max Score: 30 Success Rate: 93. Advanced Join. 60%. 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. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. Write a query to print the hacker_id, name, and total score of the hackers ordered by the descending score. The report must be in descending order by grade — i. Please find the provided solutions for learning purposes only. 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. Hackerrank SQL Basic certificate problems solution Structured Query Language (SQL) is one of the most important languages used in the industry. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice HackerRank concepts & solutions. HackerRank Menu Toggle. Breadcrumbs. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Crack your coding interview and get hired. Advanced Select SQL. sql at main · Surabhi195/HackerRank-SQL-Challenges-Solutions Solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Medium. 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. SELECT * FROM CITY WHERE COUNTRYCODE='USA' AND POPULATION > 100000; 2. Query a list of CITY and STATE from the STATION table. roll_number = Inside you will find the solutions to all HackerRank SQL Questions. About. 3 posts. There are almost always multiple solutions to the same problem. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Basic Select. Weather Observation Station 19. Basic Select Challenges. Note: CITY. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. plpratyusha. SELECT DISTINCT(CITY) FROM STATION WHERE MOD (ID,2) = 0; 1 | Permalink. Code; Issues 0; Pull requests 0; Actions; Projects 0; Security; Insights Files main. Use this. The CITY and SQL. Ketty doesn't want the NAMES of those students who You signed in with another tab or window. Coursera: Machine The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. Student Analysis SQL Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Revising the Select Query I. 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. All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Introduction to SQL. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. 2 Questions are Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hacker_id, h. 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. CountryCode and COUNTRY. Advanced Select Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. The HackerRank SQL Advanced Certification is a great way to showcase your SQL expertise. Discussions. Easy. 69%. There can be multiple ways of approaching solution to any problem. SELECT DISTINCT CITY FROM STATION WHERE MOD(ID, 2) = 0; IX. country_code, a. jianyliu. Hard. 1 week ago + 0 comments. My SQL. 09%. Julia asked her students to create some coding challenges. - hackerrank-SQL-basic-skills-certification-test-solution/README. Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is ‘Asia’. . -- - Solution 2: Uses CTE to create master data and filters the CTE inside of where clauses. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Names of columns in the City Table. Notifications You must be signed in to change notification settings; Fork 0; Star 1. omkrbh txnmsok hxttafqv zsds vad xnqe vnoaz sdy docku utqz