Hackerrank sql problems. MD-MAFUJUL-HASAN / HackerRank_SQL_Solution Star 3.

Hackerrank sql problems The solutions are categorized by level of difficulty Problems in HackerRank: SQL. Table of Contents. CountryCode Edits: Updated with the sql_mode='' based on @jakab922's comment. Finally, every program is threatened constantly by software patents. Regular practice helps you get better at using SQL and boosts your confidence in handling different database tasks. --COUNT (CHALLENGES_CREATED) OVER (PARTITION BY CHALLENGES_CREATED) AS NO_OF_COMMON_CHLNG_HCKR 4. Another way to solve this query is using the pivot function in T-SQL. CC0-1. File metadata and controls. -java hackerrank-ruby hackerrank-algorithms-solutions hackerrank-javascript hackerrank-30dayschallange hackerrank-php hackerrank-challenges hackerrank-sql hackerrank-regex SQL Problem Solutions on HackerRank This repository contains my solutions to various SQL problems from HackerRank. Weather Observation Station 8. Report repository Releases. Nerves can peak during the programming test, and even experienced developers might blank Print the total number of challenges created by hackers. Taught by: nbkhope. Julia asked her students to create some coding challenges. 183 forks. Share your videos with friends, family, and the world Find the number of hackers for each no. 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. 2 of 6; Choose a language Select the language you wish to use to solve this challenge. Copy path. Alternative Queries. Contribute to xShaimaa/HackerRank-SQL-Challenges development by creating an account on GitHub. ChatGPT. The solutions of all SQL hackerrank challenges using MySQL . Sort your results by the total number of challenges in descending order. Easy. The solutions of all SQL HackerRank challenges using MySQL environment - HackerRank-SQL-Challenges-Solutions/README. Submissions. You can write query for whole table (SELECT * FROM Hackers) then you can copy that output and then create new table in your local system then insert values in it SQL. 0 stars. Order your output by ascending company_code. 65%. Top Competitors. HackerRank SQL Problems and Solutions — 3. It contains solutions to various SQL problems organized by topics, allowing users to enhance their SQL skills systematically. Sep 15, 2024. Exclude These are actual problems that real companies are facing so they just confront any applicant directly with it. Code. Include my email address so I can be contacted. Harshit Singh. md at master · chhayac/SQL-hackerrank-problems Contribute to hnamtraan/hackerrank-sql development by creating an account on GitHub. HackerRank / SQL / Basic-Join / full-score. Advanced Join. SQL is a fun language because it's super easy to start, then you find a cliff, then it clicks and you can do almost anything (until mysql challenge tutorial sql guide oracle tutorials hackerrank plsql challenges problem problems guides hackerrank-solutions hackerrank-challenges hackerrank-sql-solutions hackerrank-problems hackerrrank-sql hackerrank-sql-problems hackerrank-sql-challenges Solutions to HackerRank's SQL challenges. 1 watching. Query the list of CITY names from STATION which have vowels (i. Post displaying HackerRank sql problem solving questions and solution. 7 hours ago + 0 comments. This repository contains the solutions to HackerRank SQL problems on Alternative Queries. Given the CITY and COUNTRY tables, query the names of all cities where the CONTINENT is 'Africa'. Depending on the job requirements, the complexity of what they're looking for can vary, but BI roles Contribute to ugaliguy/HackerRank development by creating an account on GitHub. 6: Binary Tree Nodes: Solution: We can write this query using simple case when statements. The PADS. Your result cannot contain duplicates. sql at main · Surabhi195/HackerRank-SQL-Challenges-Solutions SQL. African Cities. Contribute to mdnurahmed/hackerrank-sql-problems development by creating an account on GitHub. Packages 0. In case of any double, feel free to drop a comment on a respective blog post. Star 4. Anyway, as we are supposed to print the total number of challenges created by each student the WHERE clause: baarayy/Hackerrank-SQL-Problems. 212 stars. The following challenges use simple aggregation functions such as MIN, MAX My solutions to various hackerrank SQL problems using DB2. Java and SQL practice. Solving code challenges on HackerRank is one of the best ways to prepare for programming interviews. Advanced Select. Write a query to print the contest_id, hacker_id, name, and the sums of total_submissions, total_accepted_submissions, total_views, and total_unique_views for each contest sorted by contest_id. If you get stuck on any of the problems, feel free to check Medium SQL (Intermediate) Max Score: 20 Success Rate: 96. name, count(c. This question is published at stratascratch. Hackers Table: Challenges Table: Sample Output 0. 39 African Cities | SQL Basic Join | HackerRank Solution 2m 39s. select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. SQL problems and solutions. Weather Observation Station 6. Readme Activity. This repository tracks my progress through the SQL course on HackerRank. tried this in oracle: with comp as ( select c. SQL HackerRank Problems Resources. Hard. Lists. HackerRank SQL Problems and Solutions — 1. Prizes. -- If more than one student created the same number of challenges, then sort the result by hackerid HAVING no_of_challenges = (SELECT count Solutions for Hackerrank SQL problems. Rather it was used by the op to demonstrate the issue. No releases published. e. Dec 12, 2024. Ok | Prepare; Certify; Compete If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users. This respository contains the solutions to the SQL questions on HackerRank based on Alternative queries. Data Structures Linked Lists: Detect a Cycle 25 Solution. Please signup or login in order to view this challenge. sql at main · Pavith19/HackerRank-SQL-Challenges-Solutions This repository contains solutions to various SQL challenges and problems solved on HackerRank. I tried to provide those with explanation. 0 forks. of challenges created, the no. You signed in with another tab or window. 1 Revising the Select The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. hacker_id, h. hacker_id group by c. Students contains three columns ID, Name and Marks. The solutions of all SQL HackerRank challenges using MySQL environment - md-sawrab/HackerRank-SQL-Challenges-Solutions This repository contains my solutions to various SQL challenges from HackerRank. Subqueries-This competency includes using data based on information returned from a different query. Contribute to rabestro/hackerrank-sql development by creating an account on GitHub. Sort your results by Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hacker_id, h. - The following challenges all revolve around simple SELECT statements that make use of SELECT, FROM, WHERE, and ORDER BY. It is organized into six folders, each containing my solutions for easy, medium and difficult challenges executed in a MySQL environment. , a, e, i, o, and u) as both their first and last characters. A_challenges DESC, A. It's all about translating the word problem into SQL, which sounds easy, but the problems are written quite weirdly on HackerRank. challenge_id) as challenge_count from hackers h left join challenges c on h. I will try my best to resolve your query. " Learn more Solving SQL HackerRank Problems. This page contains solutions for all HackerRank SQL challenges which were passed successfully. Population Census . Sort by. Published on November 5, 2020. A_challenges = 50 OR C. Search syntax tips. hacker_id, C. Complex joins-This competency includes using INNER, LEFT, RIGHT, and FULL joins on multiple tables and using joins for many-to-many relationships. SQL Solutions: A collection of SQL queries that solve various database-related problems on HackerRank. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. This is hard level SQL interview question asked at Google, Meta and Amazon. A_challenges DESC, C. recency | 850 Discussions| Please Login in order to post a comment. A_challenges ORDER BY A. The solutions are organized by topics and updated regularly as I solve new problems. Whether you're a beginner or an experienced developer, you'll find solutions and explanations for everything from basic queries to advanced data manipulation. It serves as a record of my progress and showcases my understanding of SQL concepts and problem-solving skills. CodeRankGPT helps you solve HackerRank coding problems during your coding interview. About. name, C. Note: Round the average to the nearest integer. However, in the above query I have tried sticking to using standard SQL. One is that their questions don't make sense. Search code, repositories, users, issues, pull requests Search Clear. hacker_id=c. hacker_id as hackerid, name, count(c. sql at main · Pavith19/HackerRank-SQL-Challenges-Solutions Print the names of employees who earn more than $2000 per month and have worked at the company for less than 10 months. DIFFICULTY_LEVEL . SQL (Structured Query Language) is the backbone of data management and analysis. Samantha interviews many candidates from different colleges using coding challenges and contests. Medium. Write a query to print the hacker_id, name, and the total number of challenges created by each student. 3 of 6; Enter your code Please check first if you selected MS SQL Server from the dropdown list. Whether you're a beginner or an experienced developer, you'll find 45. contador FROM A INNER JOIN B ON A. Note: CITY. Solve Challenge. The repository dedicated to solutions for Hacker-rank Database problems, solved with MySQL - hackerrank-sql-solutions/The PADS. Code SQL. All solutions are solved in MySQL DBMS. --MS SQL with cte as (select hacker_id, count (challenge_id) Print the total number of challenges created by hackers. Query the names of all the Japanese cities in the CITY table. java Algorithms DFS: Connected Cell in SQL. Jul 27. Subdomains. HackerRank; Alternative Queries Problems & Solutions. Welcome to the HackerRank Solutions repository, where you can find comprehensive solutions to various HackerRank problems implemented in SQL. This repository contains solutions for Hacker Rank SQL problems. 8223 words 42 min read Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. List of solved Hackerrank challenges in PHP language. - OnkarNaik1/HackerRank-SQL-Solutions My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. hacker_id) cnt from challenges c inner join hackers h on c. Articles Works Shiny Snippets Resume About Contact. Contribute to kaneeshadawood/Hackerrank-SQL development by creating an account on GitHub. Feel free to use, share, and improve upon it! 🚀 Level up your SQL skills with these HackerRank challenges and become a coding master! 🚀 SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. main SQL (Intermediate) SQL (Advanced) Difficulty. My solutions to various hacker-rank SQL problems using DB2 syntax Resources. hacker_id as id, h. Each solution is designed to demonstrate strong analytical and query-writing skills. Enjoy! About. HackerRank SQL Problem Solving Solution Challenges. Packages contains two columns: ID and Salary (offered salary in $ thousands per month). I recommend starting a hackerrank account ahead of time and doing some challenges on your own first to scratch the rust off if needed. 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. Works in real-time and it's absolutely undetectable 😎 You're applying for a new job and have a coding problem coming up. Challenges. of 📜 License. Friends contains two columns: ID and Friend_ID (ID of the ONLY best friend). Discussions. I've been working through HackerRank (for like almost a year now) and recently I've been focusing on the mathematics, functional programming, and algorithms sections (I've already completed python and regex). Guestbook. The output is in a "code-ish" format. Grades contains the following data:. Problem 1. of challenges should be greater than max. Futher queries will per written on this view CREATE VIEW hacker_challenge_count AS select h. Readme License. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving your skills. 2 days ago + 0 comments. Some challenges include additional information to help you out. 9 watching. Add a description, image, and links to the hackerrank-sql-problems topic page so that developers can more easily learn about it. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. My HackerRank Profile: Youssef Mohamed. SQL (Basic) SQL (Intermediate) SQL (Advanced) Number of Problems: 40: 14: 4: Domains. name as name, count Hello coders, today we are going to solve Print Prime Numbers HackerRank Solution in SQL. java Data Structures Queues: A Tale of Two Stacks 30 Solution. There can be multiple ways of approaching solution to any problem. hackerrank hackerrank-python hackerrank-solutions hackerrank-java hackerrank-cpp hackerrank-algorithms-solutions hackerrank-javascript hackerrank-30dayschallange hackerrank-challenges hackerrank-sql hackerrank-datastructure hackerrank-linuxshell hackerrank-regex hackerrank-bash hackerrank-python-practice hackerrank-mathematics This repository contains solutions to all the HackerRank SQL Practice Questions - HackerRank-SQL-Challenges-Solutions/Basic Select/Weather Observation Station 3. Please find the provided solutions for learning purposes only. hacker_id, name ) select hackerid, name, cnt from comp where hackerid not in (select hackerid from comp where cnt in A_challenges, B. This might not address the issue in the MySQL setting, but at least it allowed me to HackerRank is a platform where users can practice coding skills. These solutions cover a wide range of topics including algorithms, data structures, and more. - Issues · adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Search code, repositories, users, issues, pull requests Search Clear. Code Issues Pull requests These Contain Some SQL Programming Solution of Hacker Rank😏 . java Data Structures Stacks: Balanced Brackets 30 Solution. Status. challenge_id) OVER (PARTITION BY h. A_challenges FROM C WHERE C. It’s a collection of queries I’ve written to practice and improve my SQL skills. Welcome to my collection of HackerRank SQL challenge solutions! 🥷 This repository showcases my optimized and efficient SQL queries for various problem-solving scenarios. Name of employees SQL. If the End_Date of the SQL. These solutions showcase different SQL techniques and Solutions to Hackerrank SQL problems. A_challenges = B. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. . A collection of solutions to HackerRank SQL challenges, categorized by difficulty and topic. There are a total of 58 problems of varying difficulty level that test different concepts. sql at master · amitverma80/HackerRank-SQL The solutions of all SQL hackerrank challenges using MySQL environment - HackerRank-SQL-Challenges-Solutions/Basic Join/Challenges. md at main · md-sawrab/HackerRank-SQL-Challenges-Solutions hackerrank-sql-challenges Star Here are 3 public repositories matching this topic MD-MAFUJUL-HASAN / HackerRank_SQL_Solution Star 3. Applying the conditions to exclude more than one hacker for same no. 0 stars Watchers. sql_mode=full_group_by is enabledthat's why its not woking. My solutions to various hacker-rank SQL problems using DB2 syntax - SQL-hackerrank-problems/README. 03%. If more than one student created the same number of challenges, then sort the result by  This repository contains my solutions to all the HackerRank SQL Practice Questions. I finished the following problems in its SQL section. We use cookies to ensure you have the best browsing experience on our website. Code Issues Pull requests hackerrank This repository features solutions to various intermediate-level SQL challenges from HackerRank. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. Topics SQL (Intermediate) SQL (Advanced) Difficulty. There is a table with daily weather data over the last 6 months of 2020, including the maximum, minimum, and average temperatures. Reload to refresh your session. tnguyen29. HackerRank changed the default sql_mode behavior to only_full_group_by at some point after I posted this. 20 stories SQL problems and solutions. Prizes are optional. Contribute to lalitk1997/SQL-HackerRank-Problems development by creating an account on GitHub. Explore these solutions to understand different SQL problems and enhance your skills. Contribute to jxareas/SQL-for-HackerRank development by creating an account on GitHub. 50%. Easy SQL (Basic) Max Score: 10 Success Rate: 98. Contribute to tawfikhammad/SQL-Problems-Hackerrank development by creating an account on GitHub. - You signed in with another tab or window. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Create a HackerRank account Join over 11 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Japanese Cities' Names. Q. com Some challenges include additional information to help you out. 21 stories While solving all SQL problems from HackerRank, I came across multiple solutions for the same problem. Each of the companies follows this hierarchy: Given the table schemas below, write a query to print the company_code, founder name, total number of lead managers, total number of senior managers, total number of managers, and total number of employees. You switched accounts on another tab or window. Updated Jan 26, 2021; akshat-jjain / HackerRank-SQL-Solutions. Exactly. Higher than 75 marks. Create a HackerRank account Be part of a 23 million-strong community of developers. mysql challenge sql hackerrank mysql-database hackerrank-solutions hackerrank-sql hackerrank-sql-solutions. It includes efficient SQL queries, problem-solving techniques, and well-documented scripts. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. It is guaranteed that the difference between the End_Date and the Start_Date is equal to 1 day for each row in the table. - HackerRank-SQL/Hard/Interviews. - dikshyant3/Hackerrank-sql-solutions Each challenge has a problem statement that includes sample inputs and outputs. 4 of 6; Amber's conglomerate corporation just acquired some new companies. Source. Listed below are the questions available in this repository. The WHERE clauses will use and three basic boolean operators as well as some of the most used functions. This project is open-source and available under the MIT License. You may add any prizes that you would like to offer here. -- creating a view for hacker id, name and no of challenges. Aggregation. If so, my solution should work fine, I even checked it today by inserting the code to the hackerrank's code editor and it passed the sample test case. Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. You are given three tables: Students, Friends and Packages. Ketty HackerRank SQL Problems and Solutions — 1. Challenges | Medium | HackerRank. Meesho_HackerRank_SQL_Interview_Question. Forks. To practice this SQL translation skill can also check out the 60+ question on DataLemur You signed in with another tab or window. sql at master · Shounok/hackerrank-sql-solutions This commit does not belong to any branch on this repository, and may belong to a fork outside of the 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. Binary Tree Nodes. Problem 1: Solution: Problem 2: Solution: Problem 3: Solution: About. put that on my CV? HackerRank has two big problems. Leaderboard. Automate any workflow Add this topic to your repo To associate your repository with the hackerrank-sql-solutions-oracle topic, visit your repo's landing page and select "manage topics. Revising the Select Query I. So while the answer is Wrong, the result of the query is working in the MySQL Server environment. Please read our cookie policy for more information about how we use cookies. the following code works. I solved these problems to About. 3 of 6; Enter your code Code your solution in our custom editor or code in your own environment and upload your solution as a file. Let's connect!, My linkedin Profile: Youssef Mohamed. I'm currently doing medium difficulty SQL Practice Problems fairly well, not having to look too much up. of challenges created. For some problems, I provided more than one solution. Japan Population. hacker_id=h. no. SQL interview at Google. You are viewing a single comment's thread. The contest creator holds HackerRank harmless from and against any and all Print the total number of challenges created by hackers. DIFFICULTY_LEVEL = DIFFICULTY. sql. Skills. Contribute to Ruksar56/Hackerrank_Sql_Queries development by creating an account on GitHub. 83%. Sep 15. 71%. hacker_id group by hacker_id, h. Tags: MySQL; SQL; Basic Select; Aggregation. Write a query to print the hacker_id, name, and the total number of challenges created by each student. 0 license Activity. hacker_id = h. 21283 Angela 6 88255 Patrick 5 96196 Lisa 1 The solutions of SQL hackerrank problems . Query the list of CITY names starting with vowels (i. Editorial. Problem. I have tried to provide the complete solution with possible explanation to all SQL Practice problem on HackerRank. Please check first if you selected MS SQL Server from the dropdown list. This repository contains my SQL solutions to problems from platforms like HackerRank. While solving all SQL problems from HackerRank, I came across multiple solutions for the same Hackerrank is a great platform to practice SQL queries. Basic Select. hacker_id /* but we want to be selective about which hackers we output Welcome to my repository for solving SQL problems on HackerRank! This repository contains solutions to a variety of SQL challenges and exercises that I’ve completed on HackerRank. Japanese cities name. The COUNTRYCODE for Japan is JPN. hacker_id /* after they have been grouped by hacker */ group by c. Python Solutions: A collection of solutions to HackerRank problems solved using Python. mysql sql hackerrank learning-exercise hackerrank-solutions hackerrank-sql hackerrank-sql-challenge upskilling certify-maintenance hackerrank-sql-certificate Updated Feb 16, 2024; tphuongvo / SQL-PracticeProblems Star 1. Welcome to my HackerRank SQL Solutions repository! This repository contains my solutions to 58 SQL problems from HackerRank. Would this mean I'm have a medium proficiency in SQL and could i. Player with Longest Streak. 40 Average Population of Each Continent | SQL Basic Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Provide feedback We read every piece of feedback, and take your input very seriously. Curate this topic Add this topic to your repo To associate your repository with the Join over 11 million developers in solving code challenges on HackerRank, one of the best ways to prepare Este es un conjunto de retos de SQL seleccionados para practicar los contenidos del curso de SID1 as well as for procurement and distribution of all prizes. Write a query that gives month, monthly maximum, monthly minimum, monthly average temperatures for the six months. Basic Join. Unsolved. SQL. recency | 5292 Discussions| Please Login in order to post a comment. thank you so much! really helped. Solved. Latest commit JOIN DIFFICULTY ON CHALLENGES. A repository which contains solutions to all the hackerrank basic SQL solutions. Watchers. name) AS total_challenges FROM Hackers AS h INNER JOIN Challenges AS c USING (hacker_id) ORDER BY total_challenges DESC, hacker_id; You signed in with another tab or window. Note that all the nodes (in the tree) are already mentioned in the N column in the table. The goal of this repository is to document and share SQL queries that I have implemented to solve real-world scenarios and coding challenges. Sample Input 0. akshithalachu68. main You signed in with another tab or window. - JawadSher/SQL-Problems-Solutions-HackerRank SELECT h. The thing that bothers me with HackerRank SQL questions is that it doesn't show the SQL queries output properly, like with a table, with the column names etc. 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 SQL. MS SQL using WITH /* count total submissions of challenges of each user */ WITH data AS (SELECT c. You are given two tables: Students and Grades. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. The output you're creating isn't logically useful if you think about it find total number of view, total number of unique views, total number of submissions and total number of accepted submissions. In this repository you will find my answers to the SQL challenges proposed in HackerRank, from basic to advanced level. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Also, a full solution without the need to change modes was posted by @dougal_michael below, which uses the MIN() function instead. Basic Select A collection of HackerRank SQL problems. Resources. Employee salaries. Anyway, as we are supposed to print the total number of challenges created by each student the WHERE clause: This repository contains solutions to all the HackerRank SQL Practice Questions - HackerRank-SQL-Challenges-Solutions/Advanced Join/SQL Project Planning. Readme Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. java Data Structures Trees: Is This a Binary Search Tree? 30 Solution. Unions-This competency includes using unions to display multiple sets of information in the same report. Exclude the contest from the result if all four sums are . Problem; Solution – Print Prime Numbers in SQL | Hacker Rank Solution. hacker_id) SELECT C. HackerRank SQL Problems. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 17211a0529. Please checkout my solutions and make use of it for the learning purpose only. Challenges: The challenge_id is the id of the challenge, and hacker_id is the id of the student who created the challenge. Print the total number of challenges created by hackers. Predictive Modeling w/ Python. Updated Dec 2, 2021; PHP; Athira-L-I / Some-Codes. com. SQL (Intermediate) SQL (Advanced) Difficulty. 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 This collection features a variety of SQL challenges from HackerRank, designed to help you sharpen your SQL skills. Japanese cities attribute. MySQL Server; Problem. Write a query to output the names of those students whose best friends got offered a higher Find and fix vulnerabilities Actions. 🎥 Welcome to Day 10 of the SQL Interview Preparation Series! Today, we’re tackling ranking and placement problems, focusing on dynamic leaderboards and dat This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Top. Write a query to print You signed in with another tab or window. contador = 1 ORDER BY C. as c_count /* this is the join we want to output them from */ from Hackers as h inner join Challenges as c on c. Create a HackerRank account Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Stars. SQL interview question asked at google and amazon. name COUNT (c. Open main menu. 0 | Parent Permalink. hacker_id You are given a table, Projects, containing three columns: Task_ID, Start_Date and End_Date. php hackerrank hackerrank-solutions hackerrank-php. Students contains two columns: ID and Name. , a, e, i, o, or u) from STATION. name order by challenge_count desc, Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Blame. Each problem is solved using SQL queries, and the solutions are organized for easy reference. wzogp eiylqv rmxgj mmigqp cdhvts hirlp ehu ekrut ltmpfi eeu