The superheroes location hackerrank solution in mysql. GitHub is where people build software.

The superheroes location hackerrank solution in mysql ID of the superheroes whose latitudes and longitudes both have a value smaller than 50. Find and fix Contest Leaderboard. So there is no operator named pivot it's just an enhancement. P(R) represents a pattern drawn by Julia in R rows. Did not see-> it was not a part of mysql. – The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment. Para MySQL. All SQL solutions for HackerRank's easy, medium, and hard challenges, executed on MS SQL and MySQL environments, compiled with helpful Resources & references related to the challenges. Query the number of cities having populations larger than 100000. The output column headers should be Doctor, Professor, Singer, and Actor, 317 efficient solutions to HackerRank problems. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Simple MySQL solution SELECT IF ( GRADE < 8 , NULL , NAME ), GRADE , MARKS FROM STUDENTS JOIN GRADES WHERE MARKS BETWEEN MIN_MARK AND MAX_MARK ORDER BY GRADE DESC , NAME 902 | We use cookies to ensure you have the best browsing experience on our website. How I Passed the HackerRank SQL Advanced Certification: Questions, You signed in with another tab or window. SELECT SALARY*MONTHS AS INGRESOS, COUNT(*) FROM EMPLOYEE GROUP BY INGRESOS ORDER BY INGRESOS DESC LIMIT 1; 0 | Permalink. u) the solution wont be accepted in lowercase make sure you guys make the vowels in uppercase to This repository is intended to work as an archive to collect the best (i. Basic and general method of doing is via using subqueries and group by function. Please check 1. Contribute to hetvi20/hackerrank-solution-mysql development by creating an account on GitHub. enough talking on my end, here is my simple MySQL solution to this problem: Hackerrank’s “Weather Observation Station 15” question. Hacker Rank MySQL Employees by department excercise: Write a query to print the respective Department Name and total of employees per department for all departments in Department table: Include departments with 0 employees. Although the question says (a. com/challenges/select-all-sql/prob Connect and share knowledge within a single location that is structured and easy to search. Query the Western Longitude (LONG_W) for the largest Northern Latitude (LAT_N) in STATION that is less than 137. To associate your repository with the hackerrank-sql-solutions topic, visit your repo's landing page and select "manage topics. As part of a cryptocurrency trade monitoring platform create a query to return a list of suspicious transactions. The start date of the contest I am trying to run the following code in hackerrank but while running the query I am getting output as ~ no response on stdout ~ set serveroutput on; Connect and share knowledge within a single location that is structured and easy to search. FROM (SELECT customer_number, COUNT(customer_number) AS TOTAL. I had to look for help and then ended up creating a buffer to count the everyday people. hackerrank. Also there is no need for BETWEEN because all you need is the order date to be before the minimum date + 10 years. LAT_N,4) from station S where (select Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. Sign in Product View all solutions Resources Topics. Please read our cookie policy for more information about how we use cookies. is_evil != 1 AND W. Link to the full problem on Hackerrank. Easy Solution to Understand For MySQL: select case MOD(count(lat_n),2) when 1 then (select round(S. WHERE name REGEXP '^[aeiou]. Why does this MySQL query work on my You signed in with another tab or window. 2 | Parent Permalink. In this case the rest of the CASE expression is Problem. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. Solution – Weather Observation Station 20 in SQL MySQL SET @r = 0; SELECT ROUND(AVG(Lat_N), 4) FROM (SELECT (@r := @r + 1) AS r, Contribute to aghodke24/HackerRank-Sql-Advanced-questions development by creating an account on GitHub. Sign in Product GitHub Copilot. 0. com/Yvsharma/HackerRankMySQLYou find this problem at: https://www. And phpMyAdmin is no DBMS. However the que Thanks this solution worked for me. Computing a moving maximum in BigQuery. SELECT City FROM Station WHERE City LIKE 'A%' OR CITY LIKE 'E%' OR CITY LIKE 'I%' OR CITY LIKE 'O%' OR CITY LIKE 'U%'; You would be writing the right query with lowercase vowels strange your test case would fail just for lowercase. where LAT_N is the northern latitude and LONG_W is the western longitude. nums FROM t a JOIN t b ON b . – About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright GitHub is where people build software. Share this post. Number Challenge Solution; 1: Revising the Select Query I: mySQL: 2: Revising the Select Query II: mySQL: 3: Select All: mySQL: 4: Select By ID: mySQL: 5: Japanese Cities' Attributes: Leetcode and Hackerrank MySQL solution. CONCAT(N, ' Inner'). Alice and Bob each created one problem for HackerRank. Ex: #5 [Solved] Day 4 Class vs. code WHERE WP. CHALLENGES. age) m Join wands_property wp On wp. STATION. hacker_id = c . Why we initialize the value as 21 and not 20. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. mysql practice solutions hackerrank problem-solving hackerrank-solutions hackerrank-sql hackerrank-sql-solutions Connect and share knowledge within a single location that is structured and easy to search. By detailing sales figures per city and identifying customers who spent 25% or less than the average, this solution aids in strategic decision-making for optimizing sales and customer engagement. Write Working platform:- DB2, MySQL, Oracle, MS SQL Server */ SELECT COMPANY_CODE, FOUNDER, The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled. 55; Julia’s best friend got offered a higher salary than her at 12. In neither of the solutions do you guarantee to generate the results with the correct ordering. MySQL - record farthest trip. Here are the HackerRank solutions in C++. Though I've modified the code and something's still not quite right Select w. Remember that you are Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Data Science. project-euler hackerrank programming-languages hacktoberfest hackerrank-python self-learning hackerrank-solutions hackerrank-java hackerrank-cpp practice-programming hackerrank-c hackerrank-sql hackerrank-30-days-code hackerrank-regex hackerrank-interview-kit hacktoberfest-accepted hackerrank-databases. *[aeiou]$' ^ and $ anchor the match to the beginning and end of the value. You are given a table, Projects, containing three columns: Task_ID, Start_Date and End_Date. DevSecOps DevOps CI/CD View all use cases By industry. sql at main · arknf/SQL-Challenges. But to make it more simpler, you can use '*' symbol to represent selection of all columns. Connect and share knowledge within a single location that is structured and easy to search. Write better code with AI Revising Aggregations - The Count Function. hacker_id as id, h. nums <= FLOOR ( SQRT ( a . However, I have an interesting observation which is that if you switch from MySQL to MySQL server, then the CTE works, I have three tables about superheros. Hackerrank. coins_needed, w. I have an UDF that calculates the distance between two gps points. Table of Contents Toggle Names of columns in the City Table. 3. Neil. code = w. WITH (Common Table Expressions) Could you spot what's wrong with the given SQL snippet? Incidentally, the solution has been tried to apply to the question excerpted from HackerRank - Contest Leaderboard I encountered a similar situation where my CTE didn't work in HackerRank's MySQL environment. pretty easy except for the "tracking the people that did it everyday" part. Automate any A collection of solutions for HackerRank data structures and algorithm problems in Python, JAVA, and CPP. Order the results per total of employees, if 2 or more departments have the same amount of employees then order In your code you use MIN(O2. This is what they are really looking for. nums = 0 ); I tried using the RANK functions and CTEs but they didn't work on HackerRank, so converted the query to this. This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Mysql - SQL queries for counter web visits per day, month, year and totals Did Ada Lovelace find the general solution for a set of linear equations? How does TARTs work (Transient Array Radio Telescopes), and can anyone build one and join the Contribute to evan999/HackerRank-Test-Exercises development by creating an account on GitHub. HackerRank MySQL challenge solution in the MySQL Advance Track - GitHub - hammad-ali-shah/SQL: HackerRank MySQL challenge solution in the MySQL Advance Track 3 Comments / HackerRank, HackerRank SQL / By CodeBros Hello coders, today we are going to solve Print Prime Numbers HackerRank Solution in SQL . Each solution includes a brief explanation of the problem and my approach to solving it. Ok | Prepare; Certify; Compete Edits: Updated with the sql_mode='' based on @jakab922's comment. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. number_create = ( select max ( number_create ) from cte ) or c . Practice. rewakale. coins_needed) As min_coins From wands w Join wands_property wp On wp. Healthcare Financial services Manufacturing Government View all HackerRank concepts & solutions. In my test, this won't use an index on the name column, so it will need The first line contains two space-separated integers, (the number of houses) and (the number of roads), respectively. How I Passed the HackerRank SQL Advanced Certification: Questions, Solutions, and Tips Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. The following pattern represents P(5):. Basic Select. In this lesson, we have solved the Students Marks Sum problem of HackerRank. Easy : SQL (Basic) “Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. View on GitHub Hackerrank. Navigation Menu Toggle navigation. Copy path. Packages. 8 years ago + 3 comments. The document contains 16 code snippets from Java lessons on various topics: 1. I want to get the superhero name and retreive a tv name from either Marvel or DC dependent on the results. A SELECT CASE expression will result in the evaluation of at most one THEN expression -- the first one that has a WHEN condition that satisfies. Find and fix vulnerabilities Actions You signed in with another tab or window. productid FROM product p LEFT JOIN orderline o ON MySQL solution , but first explanation of algorithm. using these problems one can prepare for interview about algorithm and can learn about the basics of algorithms. HackerRank SQL Problems and Solutions — 1. I had to look at it several times to figure out a workable solution. SELECT all_wands. txt), PDF File (. SQL-Product-Sales-per-City files for the solutions The explanation section of the problem states: The results of the second query are ascendingly ordered first by number of names corresponding to each profession (2 <= 2 <= 3 <= 3), and then alphabetically by profession (doctor <= singer, and actor <= professor). Create a HackerRank account Be part of a 23 million-strong community of developers. power FROM Wands W INNER JOIN Wands_Property WP ON W. id, WP. Learn more about Teams Get early access and see previews of new features. o. I have this below code which I found on HackerRank and it is pretty simple and works in each and every case. The order of output does not matter. FROM Orders. It's a GUI for databases. If multiple contestants have the same score in a contest, they are at the same rank. Input 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. One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. This repository contains solutions to all the HackerRank SQL Practice Questions. Learn more Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. - qanhnn12/SQL-Hackerrank-Challenge-Solutions HackerRank concepts & solutions. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Do watch the video and get benefited. Round your answer to 4 decimal places. Zaid Alissa Almaliki. hacker_id where c . 2345. You can find me on hackerrank here. age AS age, wands. While this code may solve the question, including an explanation of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. mysql. The HackerRank Question is here. It is organized into six folders, each containing my solutions for Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. The first snippet prints a welcome message in Leetcode and Hackerrank MySQL solution. HackerRank concepts & solutions. Why is CTE not working on HackerRank in my account? Discussion Not sure about MySQL requirements but in tsql the CTE has to be a new statement so usually prep ended with a semicolon and the column names need to expedite instead of Netflix. Ok | Prepare; Certify; Compete Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited to share my experience with all of you. power, wp. This community-owned project aims to bring together the solutions for the DS & Algo problems across various platforms, along with the resources for learning them. Thanks @BillKarwin for clarifying JAVA HACKERRANK SOLUTIONS - Free download as Text File (. You switched accounts on another tab or window. 4 of 6; Test your code You can compile your code and test it for errors and accuracy before submitting. code Join m On m. Star 4. hacker_id , h . - NadaMowafi/HackerRank-SQL-Challenges-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]). data engineering questions from various sources + wrote solutions. SQL-Business-Expansion and 2. 6. 6 of 6 This was my previously submitted (accepted) solution in MS SQL Server, but this much should be the same for MySQL. Write a query to print the pattern P(20). Please signup or login in order to view this challenge. You signed in with another tab or window. Enterprises Small and medium teams Startups Nonprofits By use case. It is guaranteed Query all columns for every row in a table. the correct answer for this challenge by using MYSQL: Solution by MS SQL Server. Solution – Draw The Triangle 2 in SQL MySQL set @row := 0; select repeat('* ', @row := @row + If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. " Learn more Footer 📗 Solutions of more than 380 problems of Hackerrank accross several domains. Automated the process of adding solutions using Hackerrank Solution Crawler. These solutions demonstrate various concepts and techniques in C++, from basic syntax and data types to advanced algorithms and data structures. 1. SELECT W. coins_needed) FROM Wands W2 INNER JOIN You signed in with another tab or window. However the query is populating both columns when retrieving the In this post, we will be covering all the solutions to SQL on the HackerRank platform. Working Platform:- DB2, MySQL, Oracle, MS SQL Server */ SELECT CASE . Calculate distance travelled using PostgreSQL query. It is very important that you all first give it This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Mar 31, 2024. Saved searches Use saved searches to filter your results more quickly You signed in with another tab or window. HackerRank changed the default sql_mode behavior to only_full_group_by at some point after I posted this. All Solutions are made in the MSSQL Syntax. Output one of the following statements for each record in the table:” A solution. name , c . Sample Output. You signed out in another tab or window. Input Format. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. Now, Samantha’s best friend got offered a higher salary than her at 11. code Where wp. - 12Ruturaj/HackerRank-SQL I think the table LOCATION is not necessary at all (as a table or in the query) since it's basically the same thing as COMPANY table; both having matching company and location ID. The solutions of all the HackerRank challenges for all easy, medium, and hard challenges on HackerRank executed on MySQL, JAVA, Python, etc environment compiled with helpful Resources & references related to the challenges (Latest and Updated). Write a query to print the IDs, i. Solutions of more than 380 problems of Hackerrank across several domains. Reload to refresh your session. age, w. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. Select Doctor, Professor, Singer, Actor from ( SELECT name, occupation, ROW_NUMBER() OVER (PARTITION BY occupation ORDER BY name) AS row_number Hi @Ismriti Gupta, The point of solving hackerrank assignments is for you to research and learn as much as you can. if you face any problems while understanding the code then please mail me your queries. number_create from Hackers as h left join cte as c on h . - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. u) the solution wont be accepted in lowercase make sure you guys make the vowels in uppercase to You signed in with another tab or window. 12; Scarlet’s best friend got Solution Example of Hackrank of my-sql. The report must be in descending order by grade — i. If you find any difficulty Connect and share knowledge within a single location that is structured and easy to search. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. Solution: select * from CITY 2) Select by ID cracking-the-coding-interview hackerrank hackerrank-python hackerrank-solutions hackerrank-java hackerrank-algorithms-solutions hackerrank-30dayschallange hackerrank-python-solutions hackerrank-sql hackerrank-problem-solutions hackerrank-sql-solutions hackerrank-practice hackerrank-problem-solving hackerrank-solutions-github hackerrank-all Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. We use cookies to ensure you have the best browsing experience on our website. Julia conducted a 15 days of learning SQL contest. , SUPERHERO. # Write your MySQL query statement below. SELECT p. With "invalid", a_horse_with_no_name is referring to your quotes by the way. Problem. power FROM ( SELECT code, age, power, MIN(coins_needed) coins_needed FROM ( SELECT wands. Single quotes are for string literals. In this article, I’ll walk you through two Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. name as name, COUNT(c. It is organized into six folders, each containing my solutions for easy, medium I see. I was presented with this question during a technical test in HackerRank, Connect and share knowledge within a single location that is structured and easy to search. . Skip to content. Each solution includes a brief explanation of the problem and my approach to solving it executed on MySQL All caught up! Solve more problems and we will show you more here! The solutions of all the HackerRank challenges for all easy, medium, and hard challenges on HackerRank executed on MySQL, JAVA, Python, etc environment compiled with helpful Solution sql SELECT IF ( A + B > C AND A + C > B AND B + C > A , IF ( A = B AND B = C , 'Equilateral' , IF ( A = B OR B = C OR A = C , 'Isosceles' , 'Scalene' ) ) , 'Not A Triangle' ) With this combination of science and technology, the user will be able to infiltrate virtually any facility with the highest levels of security without ever being seen, or grow to a size that can Introduction to MySQL WITH Clause. sql at master · raleighlittles/HackerRank-SQL Write a query to list the contestants ranked in the top 3 for each contest. power From (Select w. AI DevOps Security Software Development View all Explore. tables; 125 | Permalink. id, all_wands. It should be double quotes (if any) for names. most efficient) solutions to hackerrank problems, both in space and time. Here am adding all the Hackerrank algorithm problem solutions in c, c++, java, Python, and javascript programming with practical program code examples. Suspicious transactions are defined as: a series of two or more transactions occur at intervals of an hour or less they are from the same sender the sum of transactions in After going through the solutions, you will be clearly understand the concepts and solutions very easily. In. Learning Pathways White papers, Ebooks . Create Account; Training . age = Solutions By company size. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Problem. mgomezmunoz92. " Learn more Footer You signed in with another tab or window. The solution is correct. Table of Contents Toggle You signed in with another tab or window. - daniperil/hackerrank. hacker_id) as cnt FROM hackers h INNER JOIN challenges c ON h. pdf) or read online for free. hacker_id = c. Compilation of solutions to HackerRank mySQL challenges; a few of the challenges included in the table remain unsolved. age, Min(w. Ketty doesn’t want the NAMES of those students who received a grade lower than 8. 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 1 Comment / HackerRank, HackerRank SQL / By CodeBros Hello coders, today we are going to solve The Blunder HackerRank Solution in SQL . The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled. number_create in ( select Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. I suppose you are using MySQL, which would be the typical DBMS used with phpMyAdmin. Updated Oct 7, 2021; akshat-jjain / HackerRank-SQL-Solutions. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty. Instance solution in HackerRank - HackerRank solution C, C++, C#, java, Js, PHP, Python in 30 days of code Beginner Ex: #6 [Solved] Day 5: Loops solution in Hackerrank - Hacerrank solution C, C++, C#, java, Js, PHP, Python in 30 days of code Beginner WITH s AS (SELECT lat_n, ROW_NUMBER() OVER(ORDER BY lat_n) r FROM station) SELECT lat_n FROM s WHERE r = count(*)/2 What am I doing wrong? Can anyone help? I am trying to find the median of the Problem. Sep 15, 2024. The second line contains space-separated integers, where each integer describes the amount of money, , at house . Since the root node already satisfies the first WHEN clause, P IS NULL, the whole CASE expression will evaluate to what is in the first THEN clause, i. Thanks for your solution. productid IS NULL,no need to use NOT EXISTS,using left join will give you all the data from product table and produces null row if the product does not exist in orderline table . Below are my solutions to all Medium SQL challenges on HackerRank. id, wp. Also, a full solution without the need to change modes was posted by @dougal_michael below, which uses the MIN() function instead. Unless the LOCATION table is storing unique location ID and with it's own location NAME and you want to show it in the result, perhaps if the LOCATION table is like this: All Solutions in Hackerrank SQL Section. - HackerRank-SQL/Occupations. HackerRank C Program Solutions Tutorial - Students Marks Sum HackerRank Solution Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Solutions written as a part of preparation for Data Scientist Intern role - Eunoia1729/MySQL-Solutions-HackerRank Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL Topics. CREATE VIEW herotelly AS SELECT s. WHEN A + B <= C OR A + C <= B OR B + C <= A THEN ' Not The PADSGenerate the following two result sets:Query an alphabetically ordered list of all names in OCCUPATIONS, immediately followed by the first letter of Annotated solutions to HackerRank's SQL domain questions. coins_needed = ( SELECT MIN(W2. Question¶ Solution¶ MySQL / MS SQL Server. we have also described the steps used in solution. code = WP. My code for this challenge is in MySQL: SELECT c. SELECT customer_number. 5 of 6; Submit to see results When you're ready, submit your solution! Remember, you can go back and refine your code anytime. Please read our I found a discussion that answered a lot of problems I had with this one. Description. nums % b . Solutions written as a part of preparation for Data Scientist Intern role - Eunoia1729/MySQL-Solutions-HackerRank. These solutions can MySQL. Problem 1. The STATION table is described as follows: All SQL solutions for HackerRank's easy, medium, and hard challenges, executed on MS SQL and MySQL environments, compiled with helpful Resources & references related to the challenges. WITH RECURSIVE t AS ( SELECT 2 AS nums UNION SELECT nums + 1 FROM t WHERE nums < 1000 ) SELECT GROUP_CONCAT ( nums SEPARATOR '&' ) FROM t WHERE nums NOT IN ( SELECT a . HackerRank is a platform for competitive coding. Find and fix vulnerabilities Actions. age, W. Samantha Julia Scarlet Explanation. oracle: with t1 as ( select level lvl from dual connect by level <= 20 order by level desc ) select rpad('* ', lvl*2, '* ') from t1; My Solutions for SQL Challenges on Hackerrank and LeetCode - SQL-Challenges/Customer Placing the Largest Number of Orders. Mysql query, 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. - 12Ruturaj/HackerRank-SQL Hello coders, today we are going to solve 15 Days of Learning SQL HackerRank Solution in SQL. Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. coins_needed, W. ORDER_DATE) without deriving it from a query. How I Passed the HackerRank SQL Advanced Certification: Use a regular expression. 1) The PADS. here they are. coins_needed AS Anyhoo. Adi The PM's HackerRank concepts & solutions. Code your solution in our custom editor or code in your own environment and upload your solution as a file. You can get the max price by sorting the result of the query descending and keeping only the 1st row: In this video, You will get the solutions for all the 3 problems under the topic "MySQL hands-on" in TCS Xplore Course. i. 1) Revising ALL Problem: Query all columns (attributes) for every row in the CITY table. age, all_wands. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Improving the solution from Malkard, here is my simple solution for MySQL: set @ number = 21; select repeat ('* ', @ number: = @ number-1) from information_schema. MySQL Solution: with cte as ( select hacker_id , count ( challenge_id ) as number_create from Challenges group by hacker_id ) select distinct h . Write better code with AI Security. Name, MySQL - Select from one table depending on other table. Find the code to this problem: https://github. nums )) AND a . e. Blame. is_evil = 0 Group By w. Try researching how IN operator works in SQL and whether it will filter with WILDCARD or not. mysql leetcode-sql hackerrank-sql-solutions. solve the problem with the logic from this youtube video but the code in the video is for SQL Server whereas I'm using MySQL; HackerRank tests for only odd set of inputs which is a lot easier than finding median for an even set (here I've limited my project-euler hackerrank programming-languages hacktoberfest hackerrank-python self-learning hackerrank-solutions hackerrank-java hackerrank-cpp practice-programming hackerrank-c hackerrank-sql hackerrank-30-days-code hackerrank-regex hackerrank-interview-kit hacktoberfest-accepted hackerrank-databases. Inside you will find the solutions to all HackerRank SQL Questions. coins_needed, all_wands. code AS code, wands_property. ljdfp ckm svlo fusz wmg deizc drdfc vni zrm onyts