Clumsy administrator sql hackerrank solution. I have used MySQL and MS SQL Server for the solutions.

Clumsy administrator sql hackerrank solution Skip to content. Order your output by ascending company_code. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Query the names of all the Japanese cities in the CITY Problem. There are almost always multiple solutions to the same problem. Solutions to SQL Questions - HackerRank . Sep 11, 2024. Samantha interviews many candidates from different colleges using coding challenges and contests. Share this post. You can view my certificate by clicking the link below: View HackerRank Certificate SQL solutions. Solved. 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. Samantha Julia Scarlet Explanation. Company Details with Employee Counts SQL Query. Each solution is written in structured query language (SQL), showcasing my proficiency across various levels of difficulty, from basic queries to advanced topics like joins, aggregations, and window functions. g. Crack your coding interview and get hired. Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Candidate = Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. You signed in with another tab or window. They include: No. Find I am very OCD when it comes to how I write SQL. My solutions to SQL challenges on Hacker Rank. SQL. Find and fix vulnerabilities Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Ok | Prepare; Certify; Compete; Apply; 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. While solving all SQL problems from HackerRank, I came across multiple solutions for the same Julia conducted a 15 days of learning SQL contest. ExpressJS Tutorials | Projects | Interview Questions. Input Format. Latest commit This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Medium. Topics. Repo gathered by CodeRankGPT - Solve HackerRank coding problems during your coding interview, in real-time and undetectable 😎 You signed in with another tab or window. We use cookies to Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. Note: Print NULL when there are no more names corresponding to an occupation. 2. e. Sign in Product Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. The CITY table is described as follows: Field Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. 48%. Return to all comments →. Solve Challenge. In this article, I’ll walk you through two questions from the exam along The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. This tutorial is only for Educational and Learning Purpose. 1 Revising the Select Query I SQL 2 Hello coders, today we are going to solve Population Density Difference HackerRank Solution in SQL. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. About; to the sun - Equation does not have solution? more hot questions Question feed Subscribe to RSS Question feed To subscribe to this RSS feed, copy and paste this URL into your RSS reader. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu You signed in with another tab or window. Goals. All Solutions are made in the MSSQL Syntax. Each solution is provided in SQL format and accompanied by my approach to solving it. plpratyusha. I have used MySQL and MS SQL Server for the solutions. mysql practice solutions hackerrank problem-solving hackerrank-solutions hackerrank-sql hackerrank Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. SQL Query for printing pattern. PastElection = 253) percent_votes FROM `past_elections-candidates` pec INNER JOIN `candidates` c ON pec. My solutions to HackerRank problems. On each day, you will choose a subset of the problems and solve them. In this video I am solving "New Companies" on Hackerrank. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. Ollivander's Inventory. We use cookies to ensure you have the best browsing experience on our website. We use cookies to Effective solutions to hackerrank. Table of Contents. Enhance your DSA skills with our step-by-step explanation and code. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions This repository contains my solutions to all SQL challenges on HackerRank. 02%. Stories to Help You Grow as a Software Developer. Please read our cookie policy for more information about how we use cookies. Sample Output. Hard. 11 | Parent Permalink. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Readme 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 company pays the database administrator too little so the work has been quite clumsy. Query the sum of the populations for all Japanese cities in CITY. HackerRank; Alternative Queries Problems & Solutions. Do The HackerRank SQL Basic Certification gives you a credible way to prove your skills to potential employers, helping you stand out in a competitive job market. 99%. Ask Question Asked 7 years, 10 months ago. Subdomains Solutions; 1: Basic Select: Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Enhance your coding skills with detailed explanations and code snippets, empowering you to conquer diverse programming problems and excel in Java development. Contribute to sword-jin/HackerRank-Solution development by creating an account on GitHub. 📜 License. Navigation Menu Toggle navigation. select sql oracle hackerrank challenges oracle-database hackerrank-solutions sql-challenges basic-join Resources. Mar 31, 2024. We use cookies to Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 797 stories whether you’re a database administrator You signed in with another tab or window. SQL Solutions: A collection of SQL queries that solve various database-related problems on HackerRank. Lists. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. Problem; Solution – Japanese Cities’ Names in SQL; Problem. Status. In this post, we will be covering all the solutions to SQL on the HackerRank platform. P(R) represents a pattern drawn by Julia in R rows. Raw. Curate this topic Add this topic to your repo To associate your repository HackerRank SQL Solutions. Find and fix vulnerabilities My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. N which you need to complete. 66%. Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. Clumsy Administrator A company maintains the records of all employees. com practice problems in C++, python and SQL - Hackerrank_solutions/SQL/The Blunder. MS Sql Server Tutorials | Examples | Interview Questions. Binary Tree Nodes. Sep 15, 2024. Effective solutions to hackerrank. Crack LeetCode SQL Interview Questions. Contains I have tried to provide the complete solution with possible explanation to all SQL Practice problem on HackerRank. Alternative Queries. _____ About. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. Easy. Curate this topic Add this topic to your repo To associate your repository I used the code stubs provided by HackerRank, so don't mind the unnecessary imports, naming convention and so on. 6 months ago + 0 comments. Find and fix vulnerabilities SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Problem; Input Format; Solution – Japan Population in SQL. We use cookies to HackerRank Solutions in SQL Welcome to the HackerRank Solutions repository, where you can find comprehensive solutions to various HackerRank problems implemented in SQL. Feel free to use my solutions as inspiration, but please don't literally copy the code. hackerrank solutions github | hackerrank all solutions | hackerrank solutions for java | hackerrank video tutorial | hackerrank cracking the coding interview solutions | hackerrank data structures All HackerRank solutions for Python, Java, SQL, C, You signed in with another tab or window. MIT license Activity. The output column headers should be Doctor, Professor, Singer, and Actor, respectively. All Solutions in Hackerrank SQL Section. We use cookies to 15 Days of Learning SQL. Submissions. I will initially outline the problem statements and then proceed to add their respective solutions. ). Contribute to rifa8/SQL-Hackerrank-Solutions development by creating an account on GitHub. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Regular practice helps you get better at using SQL and boosts your confidence in handling different database tasks. For example, I would write the query like this: SELECT COUNT(DISTINCT [TA]. Sep 16, 2024. 75%. , Algorithms, Data Structures, etc. You have also assigned a rating vi to each 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. These folders contain solutions for easy, medium, and difficult challenges executed on an MS SQL environment. Contribute to christinasam/hackerrank-challenge-solutions development by creating an account on GitHub. This project is open-source and available under the MIT License. The above comments are correct. Add a description, image, and links to the hackerrank-sql-solution topic page so that developers can more easily learn about it. Solution – Select All in SQL SELECT * FROM CITY; Disclaimer: The above Problem is generated by Hacker Rank but the Solution is provided by CodingBroz. Sign in Product Actions. The COUNTRYCODE for Japan is JPN. Each solution includes a brief explanation of the problem and my approach to solving it All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. mysql. The interviewer mentioned I will be tested on SQL and Statistics, now when I clicked on the test link to see the test overview there are 3 sections. Leaderboard. Easy SQL (Basic) Max Score: 10 Success Rate: 95. Staff picks. . Medium SQL (Intermediate) Max Score: 30 Success Rate: 93. com practice problems in C++, python and SQL - IhorVodko/Hackerrank_solutions. You did such a great job helping Julia with her last coding contest challenge that she wants you to work on this one, too! This is a new question Hackerrank has added for the advance level SQL certification. I also tried stratascratch and it's all good, everything is as you expect. Weather Observation Station 16. Fariha Shah. Sign in Product HackerRank_solutions / SQL / Aggregation / Revising Aggregations - Averages. Viewed 3k times -6 This T-SQL query. ; Clear Explanations: Each solution includes comments and explanations to help you understand the approach. While the different amount of expressions in each query is low, some require multiple subqueries to solve and therefore there is a varied difficulty of problem solving across these challenges. Create a HackerRank account Be part of a 23 million-strong community of developers. Write a query to print total number of unique hackers who made at least 1 Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Hard SQL (Advanced) Max Score: 50 Success Rate: 78. We use cookies to This repository contains My Solutions of SQL challenges on HackerRank and you can see multiple solutions for the same challenge. Contribute to PryskaS/SQL-challenges development by creating an account on GitHub. Click here for more information about HackerRank SQL Basic Certification. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Host and manage packages Security. (Most people get older each year, and the stored age values will soon be out-of-date. Contribute to sknsht/HackerRank development by creating an account on GitHub. Reload to refresh your session. We use cookies to SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. These are not the only solutions. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. We use cookies to You signed in with another tab or window. These solutions cover a wide range of topics including algorithms, data structures, and more. sql at master · IhorVodko/Hackerrank_solutions SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. Sign in Product GitHub Copilot. Curate this topic Add this topic to your repo To associate your repository . Revising the Select Query I. Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. Exclude I've achieved the SQL Basic Certification from HackerRank. [manager_id]) AS [Managers] I want your help to find duplicate records in a 50 column table on SQL Server. Write HackerRank-Solution / SQL / Aggregation / 1-revising-aggregations-the-count-function. Problem; Solution – Draw The Triangle 2 in SQL. Sort your results by the total number of challenges in Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. 15%. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Topics Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited to share my experience with all of you. 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. Sort by. 76%. 19 stories Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Modified 2 years, 2 months ago. Binary Tree Node Type Query on HackerRank SQL. This repository contains my solutions to all SQL challenges on HackerRank. Crystal X. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Nerves can peak during the programming test, and even experienced developers might blank @Tanishka Now that Alex as cracked how to run PL/SQL on Hackerrank, you could improve the answer by removing the whole DECLARE section, because your loops implicitly declare i and j so the ones at the top aren't used. We use cookies to Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. 03%. Find and fix vulnerabilities Solutions of the HackerRank's SQL challenges. 12; Scarlet’s best friend got Hello coders, today we are going to solve Japanese Cities’ Names HackerRank Solution in SQL. 170+ solutions to Hackerrank. The following pattern represents P(5): * Explore comprehensive Java solutions for HackerRank challenges. Django. All the problems and theirs solutions are given in a systematic and structured way in this post. Sign in Product HackerRank-Solutions / SQL / 2_Advanced So I've found out how to find the winner as long as I know the Primary Key of the election_ID: SELECT FirstName, LastName, Votes / (SELECT SUM(Votes) FROM `past_elections-candidates` pec WHERE pec. Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. Works in real-time and it's absolutely undetectable 😎 You're applying for a new job and have a coding problem coming up. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. The Clumsy schema designer, storing age. Latest commit Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL Topics. HackerRank SQL Problems and Solutions —2. Discussions. Notes. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. Watchers. Student and Friend Salary Report: Insights and Analysis. Find and fix vulnerabilities Codespaces Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. It's frustrating. You are viewing a single comment's thread. Julia conducted a 15 days of learning SQL contest. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Problem; Input Format; Solution – Population Density Difference in SQL. You switched accounts on another tab or window. Revising the Select Query I – HackerRank Solution Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. 3. Problem 1. Sign in Product HackerRank-Solutions / sql / intermediate / advanced-join / symmetric-pairs. Now, Samantha’s best friend got offered a higher salary than her at 11. Automate any workflow Packages. Blame. Feel free to explore and use the solutions as a reference for you - Hackerrank-Sql-Solutions Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Write a query to list the contestants ranked in the top 3 for each Effective solutions to hackerrank. For those who look for solution without Recursion (that's my favourite solution), here is the solution This repository contains the solutions to HackerRank SQL problems on Alternative Queries. You've arranged the problems in increasing difficulty order, and the i th problem has estimated difficulty level i. Find and fix vulnerabilities Easy SQL (Advanced) Max Score: 25 Success Rate: 96. mysql sql hackerrank learning-exercise hackerrank-solutions hackerrank-sql hackerrank-sql-challenge upskilling certify-maintenance hackerrank-sql-certificate. Query the difference between the maximum and minimum populations in CITY. SELECT city, Len(city) FROM station ORDER BY Len(city) returns table sorted by city, not by Len(city) - is this proper behavior? Acme 4 Addison 7 This T-SQL query SELECT city, Len(city) FROM station ORDER BY Len(city) returns table sorted by city, not by Len Hackerrank SQL challenge. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Problem. This is part 1 of the whole series. Write better code with AI Security. HackerRank solutions. 5 Powerful Solutions to Common HackerRank SQL Certification Problems 1. MySQL; Problem. If there is more than one smallest or largest city, choose the one that comes first when ordered alphabetically. In this repository, you will find updated SQL solutions for all HackerRank problems as of 2024. The solutions are organized into directories based on the specific challenge category. 55; Julia’s best friend got offered a higher salary than her at 12. Problems with similar vi values are similar in nature. 1 watching. 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. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. IMO, to help reduce the number of errors you may get when writing SQL, I recommend using the key statements when it comes to giving an Alias. Hello coders, today we are going to solve Contest Leaderboard HackerRank Solution in SQL. Welcome to my HackerRank SQL Solutions repository! This repository contains my solutions to 58 SQL problems from HackerRank. Write a query to print. ; Multiple Languages: Where possible, solutions are provided in multiple programming languages. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each I have taken HackerRank SQL (Intermediate) Certificate test on 10th November 2024. We use cookies to Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. SQL Query for printing prime numbers. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution. Write HackerRank-Solution / SQL / Advanced Select / 1-the-pads. Draw The Triangle 2. Advanced Join. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. where LAT_N is the northern latitude and LONG_W is the western Hackerrank SQL Practice Questions - P7 SQL (Structured Query Language) has become an indispensable skill in the data-driven world. This is a Medium SQL Problem. File metadata and controls. 95%. Email. Classes More Than 5 Students. 85%. Solution using Joins is faster although it uses much space but for time being space is not a constraint but time is , GitHub is where people build software. 50%. Basic Select; HackerRank offers an extensive collection of SQL problems, and we will solve them one by one. Easy SQL (Advanced) Max Score: 25 Success Rate: 97. HackerRank is a platform for competitive coding. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. The attempt with the highest score is only one considered. Structure. Write a query to print the hacker_id, name, and the total number of challenges created by each student. Suppose m Skip to main content. total number of unique hackers who made at least 1 submission each day (starting on the first day of the contest), and; find the hacker_id and name of the hacker who made maximum number of submissions SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Skills. New Companies. Query all columns. 65%. Top. Feel free to use, share, and improve upon it! 🚀 Level up your SQL skills with these HackerRank challenges and become a coding master! 🚀 HackerRank SQL Challenge Solutions . Then you could replace the inner loop with dbms_output. 4 Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 1. The STATION table is described as follows:. This respository contains the solutions to the SQL questions on HackerRank based on Alternative queries. put_line(rpad('* ', i * 2, '* ')); And you don't have to code in uppercase :) If you want to build your career in data science, You must learn sql. So, without wasting any time, let’s jump to the solutions. Store DOB instead. Advanced Select. Sign in Product HackerRank-Solutions / SQL / 3_Aggregation / 02_Revising Aggregations - The Sum Function / Revising Aggregations - The Sum Function. . This collection provides solutions to the HackerRank SQL Certification Test problems. Write a query to print the contest_id, hacker_id, name, and the sums of total_submissions, total_accepted_submissions, Hello coders, today we are going to solve Japan Population HackerRank Solution in SQL. 2 Questions were asked, as of now 2 questions will be asked from these questions(I hope so), provided the solution also: CodeRankGPT helps you solve HackerRank coding problems during your coding interview. Amber's conglomerate corporation just acquired some new companies. Retrieving Data Using SELECT Queries HackerRank SQL Solutions. Hackerrank-SQL-Solutions You signed in with another tab or window. Welcome to the HackerRank SQL Solutions Repository! This repository contains my solutions to various SQL challenges from HackerRank. Stack Overflow. This repository contains solutions for Hacker Rank SQL problems. Stars. Each problem is solved using SQL queries, and the solutions are organized for easy reference. Automate any workflow Solution. I was not able to solve it at all. Source. Problem; Input Format; Explanation; Solution – Contest Leaderboard in SQL. The CITY table is described as follows: Field 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. Folders in the Repo. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving your skills. Population Census . Our platform provides a range of challenges covering various C programming topics such Problem. You signed out in another tab or window. Hackerrank is a good platform to learn SQL from. 15 Days of Learning SQL. The output is in a "code-ish" format. 6 stars. biengioichantroi. 4 lines (3 loc) · 90 Bytes. The repository contains 4 folders. Order your output in descending order by the total number of challenges in which the hacker earned a full score. - Ishika63/HackerRank-SQL-Intermediate-Solution This repository contains my solutions to diverse SQL challenges sourced from HackerRank. Hello coders, today we are going to solve Draw The Triangle 2 HackerRank Solution in SQL. Hackerrank contains 58 SQL based problems for interview practice, as i go through these will keep a solution bank here categorised into the three difficulties (basic, intermediate, advanced) Solutions to the SQL HackerRank challenges. HackerRank C Program Solutions offer a comprehensive set of problems and solutions that will help you hone your C programming skills. HackerRank SQL Problems and Solutions — 1. The OCCUPATIONS Inside you will find the solutions to all HackerRank SQL Questions. Learning: Improve my coding skills and deepen my understanding of Python and SQL. recency | 1006 Discussions| Please Login in order to post a comment. I solved these problems to improve my SQL skills and prepare for technical You signed in with another tab or window. Facebook. Basic Join. Resources. Julia asked her students to create some coding challenges. Problem. Can anyone help? There were a number of contests where participants each made number of attempts. : number of characters in the name). Whether you’re a budding data analyst, an experienced software engineer, or a database administrator, mastering SQL through practical exercises can significantly enhance your problem-solving skills. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution The following challenges require the use INNER JOINs and LEFT JOINs. Each of the companies follows this hierarchy: Given the table schemas below, Structured Organization: Challenges are organized into folders based on topics (e. Copy link. We use cookies to Explore our Hackerrank solution for finding several operations and solutions to problems using data structures. We use cookies to Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Effective solutions to hackerrank. Unsolved. Feel free to explore and use the solutions as a reference for you - Hackerrank-Sql There are N problems numbered 1. HackerRank SQL Solutions. Manhattan Distance Calculation SQL Query. Adi The PM's Substack. Problem 1: Solution: Problem 2: Solution: Problem 3: Solution: About. Packages. SELECT city, Len Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. It is very important that you all first give it a try & brainstorm yourselves before having Get the number of challenges completed by everyone, ranked from most completed to least WITH challenge_counts AS ( SELECT hacker_id, COUNT (challenge_id) as challenge_count, RANK This T-SQL query. Toggle navigation. We use cookies to SQL. Code. Access a curated repository to strengthen your problem-solving abilities and advance your understanding of Java programming on HackerRank In this HackerRank Functions in SQL problem solution, Amber's conglomerate corporation just acquired some new companies. ) Your query is nearly correct, given the explanation of the requirments. 596. The Certificate can be viewed here . Readme License. These solutions showcase different SQL techniques and concepts. sql. Aggregation. See also my other videos about Hackerrank problems. Basic Select. Subdomains. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Effective solutions to hackerrank. lyviajq evbpjq utaxnf lssgvcp wjz mgngseu nranbj cxh mmy wlqob