Hacker rank my sql. power FROM wands a JOIN wands_property b ON a.

Hacker rank my sql Proctoring allows the recruiter to monitor your test screen activity and identify potential malpractice. hacker_id) as cnt FROM hackers h INNER JOIN challenges c ON h. 1. There are almost always multiple solutions to the Jan 10, 2025 · Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Sort your results by the total Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. You signed out in another tab or window. Related. name, count(c. Disclaimer: The HackerRank supports Microsoft SQL, MySQL, Oracle, and DB2 databases. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. ; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. PHP stands for Hypertext Preprocessor, and is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and Microsoft SQL Server. marks FROM students S JOIN grades G ON S. nums FROM t a JOIN t b ON b. For Developers Join over million Generate the contest leaderboard. It took me a bit more Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Reload to refresh your session. Reason: Window functions provide powerful tools for performing calculations across rows related to the current row. My solutions to various hacker-rank SQL problems using DB2 syntax - chhayac/SQL-hackerrank-problems Nov 25, 2024 · Step 4: Output of the Main Query. join challenges c on c. SQL-Business-Expansion and 2. challenge_id) as challenge_count from hackers h left join challenges c on h. This is the only video you will need to improve you MySQL: HackerRank. Each solution is accompanied by comments for clarity, showcasing Mar 12, 2024 · 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. Sep 19, 2024 · That said, I will go through problems 1–5 using MySQL in this first part and work through the rest in subsequent posts. marks BETWEEN G. challenge_id) j INNER JOIN Difficulty d Overview. Updated Oct 18, 2020; TSQL; borkarmansi260 / HackerRank. But hey, second time's the charm, right? Boom! Just crushed that HackerRank skill assessment exam! 🎉 And let me tell you, that feeling when you finally nail it? Pure satisfaction. The AS keyword causes errors, so follow this convention: "Select t. 1 of 6 Review the problem statement Each challenge has a problem statement that includes sample inputs and outputs. If a lot of people have already solved a challenge, the odds are that the issue is in your code. hacker_id, h. Prizes are optional. 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: Pivot the Occupation column so the Name of each person in OCCUPATIONS is displayed underneath their respective Occupation. mysql leetcode-sql This time, a Hacker Rank certificate for SQL (Basic). Doesn't my like clause detect a first letter starting with a vowel and then any wildcards following it? Just as the regexp anchors at the beginning of the string and checks that the first character is a vowel. BUSINESSFor Companies We are the market–leading technical interview platform to identify and hire developers with the right skills. Without Further ado let’s dive straight in. Prithviraj Biswas. 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 a sequence is MySQL Solution: SELECT CONCAT (Name, "(", LEFT (Occupation, 1), ")") FROM OCCUPATIONS ORDER BY Name; SELECT CONCAT (' There are a total of ', COUNT (*), ' ', LOWER (Occupation), ' s. Write a query to print total number of unique hackers who made at least submission each day HackerRank is a widely-used platform for practicing coding problems, preparing for technical interviews, and improving algorithmic skills. id, b. MySQL SELECT name FROM students WHERE marks > 75 ORDER BY SUBSTR(name, LENGTH(name)-2, 3), id; Disclaimer: The above Problem (Higher Than 75 Marks) is generated by Hacker Rank but the Solution is -- creating a view for hacker id, name and no of challenges. hacker_id=c. Leetcode and Hackerrank MySQL solution. ” I used the MySQL option on the platform to solve each of the challenges. Hacker 90411 got a score of 100 for challenge 66730 with a difficulty level of 6, so 90411 MySQL SELECT a. hackerrank. MySQL Server; Problem. This Repository Contains My Hacker Rank Solutions. power FROM wands a JOIN wands_property b ON a. You switched accounts on another tab or window. sql and 2. 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. Prizes. r/SQL. hassanbazaf1. Problem. My code for this challenge is in MySQL: SELECT c. hacker_id) AND (SUB3. Login Don’t have an account? Contact sales or Get free trial. Take the HackerRank Certification Test and showcase your knowledge as a HackerRank verified developer. Hackers: The hacker_id is the id of the hacker, and name is the name of the hacker. HackerRank is the market-leading coding test and interview solution for hiring developers. com/challenges/revising-the-select-query/problemProblem Statement - Current projects at work require more SQL skills, so I took the time to brush up my SQL knowledge using the HackerRank coding challenges platform. Basic Select Challenges. Start hiring at the pace of innovation! Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Y AND F2. challenge_id) as c_count. X > F1. Hacker 84072 submitted solutions for challenges 49593 and 63132, so the total score = 100 + 0 = 100. A subreddit for all questions related to programming in any language. hacker_id = SUB2. Ollivander's Inventory. GROUP BY and ORDER BY algorithms to ensure proper output structure and sorting. Problem: You are given a table, Projects, containing three columns: Task_ID, Start_Date and End_Date. Domains. coins_needed, a. Star 0. Use subqueries instead: Select h. Don't panic! This is a SockJS hidden iframe. Easy SQL (Basic)Max Score: 10 Success Rate: Verify your SQL Skills. Each solution includes a brief explanation of the problem and my approach to solving it. Sort the output by the LAST three characters of each name. Please provide a short description of your contest here! This will also be used as metadata. score as _score, difficulty_level, s. Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. And I've absolutely bombed one or two of those. Domains Aug 8, 2022 · My submissions/answers for a set of SQL query quizzes to help prepare for interview questions regarding SQL ranging from Basic SQL to Advanced SQL. I am solving question on Hackerrank and RDBMS is mysql This is code WITH cte AS ( SELECT salary, months * salary AS totals FROM employee ) SELECT DENSE_RANK() OVER (ORDER BY totals) AS rk F Hey there, fellow Data Folks and SQL Ninjas! Today, I want to share a simple solution to a challenging Hackerrank problem using MySQL. grade DESC, SELECT DISTINCT city FROM station WHERE city REGEXP '^[aeiouAEIOU]. Why did we need to upgrade to MySQL 8. There's little reason to find alternatives. X) AND (X != Y) UNION SELECT X, Y FROM FUNCTIONS F1 WHERE X Challenge Walkthrough Let's walk through this sample challenge and explore the features of the code editor. Sample Input 0. nums % b. Domains HackerRank's MySQL challenges allow one to improve their SQL skills through many different tasks. order by c_max desc limit 1) or c_count in (select distinct c_compare as c_unique. Hi all! So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. name as name, COUNT(c. submission_date AND (SELECT COUNT(DISTINCT submission_date) FROM Submissions AS SUB3 WHERE (SUB3. Okay, so my first crack at it? Let's just say it was more of a practice run. Solve 30+ questions of HackerRank SQL section. Write a query to print the hacker_id, name, and the total number of challenges created by each student. group by h. code = b. Challenges. code WHERE b. SQL-Product-Sales-per-City files for the Top Competitors. It is guaranteed that the difference between Hacker 90411 got a score of 30 for challenge 71055 with a difficulty level of 2, so 90411 earned a full score for this challenge. Note that the query provided by the op is not the final answer to This repository contains solutions for Hacker Rank SQL problems. Output one of the following statements for each record in the table: Equilateral: It’s a triangle with 3 sides of equal length. grade > 7 THEN S. Print your result on a single line, and use the ampersand (&) character as Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. tables ; 125 | Query the names of students scoring higher than 75 Marks. Reason: Basic queries are essential for retrieving data from a database. It's used for cross domain magic. You may add any prizes that you would like to offer here. 15 days of Learning SQL. Write a query to output the start and end dates of projects listed by the number of days it took to complete the project in ascending order. Business Expansion. Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION. Field From table1 t" instead of "select t. hacker_id, name from ( Select j. Y = F1. Starts in. Learn complete MySQL & PostgreSQL. 03%. hacker_id, s. 40%. Medium SQL (Intermediate) Max Score: 30 Success Rate: 93. submission_date)) = oracle: with t1 as ( select level lvl from dual connect by level <= 20 order by level desc ) select rpad('* ', lvl*2, '* ') from t1; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. select h. You signed in with another tab or window. How to filter and sort the data using WHEN, logical operators and ORDER BY. challenge_id = ch. MySQL SELECT X, Y FROM FUNCTIONS F1 WHERE EXISTS (SELECT * FROM FUNCTIONS F2 WHERE F2. These are not the only solutions. hacker_id, h. Thrilled to share that I've just earned the Gold Badge in SQL on HackerRank! It's been an exhilarating journey of refreshing my knowledge, tackling challenging cases, and expanding my SQL toolkit Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. MySQL SELECT CASE WHEN G. Challenges: The challenge_id is the id of the challenge, and hacker_id is the id of the student who created the challenge. Verify your SQL Skills. Medium SQL (Intermediate) Max Score: 30 Success Rate: 92. There is also a limit on how much rating you can gain or lose in single event which depends on the Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. group by c2. name, count (h. This repository contains MySQL solutions of the Hackerrank SQL Intermediate questions - 007aneesh/Hackerrank-SQL-Intermediate-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. When you write your own programs, ensure that you've Solution – Revising the Select Query I MYSQL SELECT * FROM CITY WHERE COUNTRYCODE = 'USA' AND POPULATION > 100000; Disclaimer: The above Problem (Revising the Select Query I) is generated by Hacker Rank but the You signed in with another tab or window. 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. PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries. Field From table1 AS t" Query an alphabetically ordered list of CITY names not starting with vowels. is_evil = 0 AND a. submission_date < SUB1. r/learnprogramming. hacker_id group by hacker_id, h. Example Task: Install a relational database (e. Accelerate your Job Search. Disclaimer: The above Problem (Occupations) is generated by Hacker Rank but the Solution is Provided by CodingBroz. Basic SQL Queries. HackerRank for Work currently supports More than 40 different programming languages. select case when a+b > c and b+c > a and a+c > b then case when a=b and b=c and a=c then 'equilateral' when a=b or b=c or a=c then 'isosceles' when a<>b and b<>c and a<>c then 'scalene' end else 'not a triangle' end as type_of_triangle from triangles; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. In turn, these forums become vibrant centers for people to interact, obtain explanations, and discuss different ways of resolving issues. hacker_id = c. Working through Weather Observation Station 6 on hackerRank, and I can't understand why the former code works but the latter does not. This key competency includes a basic understanding of the PHP environment, predefined PHP arrays containing variables, understanding and ability to write code to perform conditional operations, SQL Project Planning. Rules. These reports are available after the candidate submits And I've have technical interviews where they want me to solve certain tests/scenarios to test out my SQL skills. challenge_id) as c_max. The platform covers a diverse range of problems that span various difficulty levels and domains, making it an excellent resource for both beginners and experienced programmers. min_mark AND G. Motivation for Upgrade. Jun 15, 2024 · 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. This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. MySQL, PostgreSQL, and SQL Server have some of the best documentation for any system I've worked with. Change your DBMS to “MySQL”. Tips for Passing the HackerRank SQL Advanced Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. And the amount of change will depend on lot of factors including but not limited to performance of other users, the number of competitions you have participated in. I have used MySQL and MS SQL Server for the solutions. Creating a Database Question Click on the Library tab on the home page and then click on the Create Question button. select case when a+b > c and b+c > a and a+c > b then case when a=b and b=c and a=c then 'equilateral' when a=b or b=c or a=c then 'isosceles' when a<>b and b<>c and a<>c then 'scalene' end else 'not a triangle' end as type_of_triangle from triangles; You signed in with another tab or window. working platform:- mysql */ select h. having c_count = (select count (c2. You have an off-day, or some of the questions focus on things that Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hackerrank-python hackerrank-solutions hackerrank-javascript hackerrank-30dayschallange hackerrank-sql hackerrank-statistics hackerrank-interview-kit hackerrank-certificates. So, without wasting any time, let’s Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Participation in discussions helps a student understand diverse views and other Hackerrank's mysql version is old; too old to support CTEs. and find the hacker_id and name of the hacker who made maximum number of submissions each day. My solution: WITH MaxScores AS ( SELECT Hacker_ID, Challenge_ID, MAX(Score) AS MaxScore FROM Submissions GROUP BY Hacker_ID, Challenge_ID ), SummedScores AS ( SELECT Hacker_ID, SUM(MaxScore) AS TotalScore FROM MaxScores GROUP BY Hacker_ID ) SELECT S. Here are the most Julia asked her students to create some coding challenges. Select NAME when its OCCUPATION matches the OCCUPATION's column, else Curious if you mean they are just sending you a hacker rank quiz or will there be an actual person from the company interviewing you with hackerrank questions? Reply reply Top 1% Rank by size . Solve HackerRank problems to get Gold star and 670 points in SQL HackerRank. The available database languages are: You can select your preferred language at These concepts cover the fundamental syntax and basic features of SQL. challenge_id) as cnt from ( Select s. Activities involved: Writing SELECT statements, filtering results with WHERE clauses. Please check 1. Customer Spending. Example Task: Write a query that uses ROW_NUMBER to assign row numbers within partitions of a result set. nums)) AND a. X = F1. Name, S. The HackerRank Skills This repository contains my SQL solutions to HackerRank challenges, organized by difficulty: Easy, Medium, and Hard. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. These tasks present an accessible way for understanding SQL, from simple questions Nov 13, 2024 · HackerRank database questions typically involve working with one or more tables, with schemas provided in the problem statement. It was a long due. How to write SELECT queries to fetch relevant data in PostgreSQL and MySQL. They are necessary for writing simple SQL queries and understanding the core structure and flow of database This repository is a collection of updated solutions to SQL challenges on HackerRank. Nov 28, 2019 · MySQL to . Get silver and gold rank with 600+ points. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hacker_id ORDER BY Counter1, If your actual rank in the contest is better than your expected rank your rating will increase, otherwise it will decrease. More posts you may like r/SQL. g. Contest Leaderboard. Structured Query Language is one of the most important languages used in the industry. name having challenges_created = ( select count SELECT submission_date, ( SELECT COUNT(DISTINCT hacker_id) FROM Submissions AS SUB2 WHERE SUB2. submission_date = SUB1. Futher queries will per written on this view CREATE VIEW hacker_challenge_count AS select h. ') FROM OCCUPATIONS GROUP BY Occupation ORDER BY COUNT (*), Occupation. - atanugerah/hacker-rank-sql Mar 12, 2024 · 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. Average Population of Each Continent. 7, as it had reached its end of life. The output Challenge Walkthrough Let's walk through this sample challenge and explore the features of the code editor. Members Online. name order by challenge_count desc, Problem Statement - 1https://www. from hackers h. This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hacker_id. The problem involves HackerRank for Work generates detailed candidate test reports to help you evaluate a candidate’s performance in a test. Saved searches Use saved searches to filter your results more quickly Julia conducted a days of learning SQL contest. hacker_id = h. TotalScore My SQL Server. There could be a couple reasons for this: Your code doesn't match the expected output. hacker_id group by h. Data Integrity and Constraints  · Solutions to HackerRank practice, tutorials and interview preparation problems with Python 3, mySQL, JavaScript . 0? We had been running AWS Relational Database Service (RDS) with extended support for MySQL 5. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution MySQL solution , but first explanation of algorithm. hacker_id GROUP BY c. Write a query to print all prime numbers less than or equal to 1000. , MySQL, PostgreSQL) and connect to it using a SQL client. select city from station where city like 'A%' or city like 'E%' or city like 'I%' or city like 'O%' or city like 'U%'; The Solution Step 1: Create a pivot table with OCCUPATION as the columns. In the Select Question Query the details of the city with ID 1661. 2. hacker_id) as challenges_created from hackers h join challenges c on h. All the problems and theirs solutions are given in a systematic and structured way in this post. 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. name ELSE NULL end AS names, G. About. To promote optimal coding practices in HackerRank Tests and online interviews, our coding environment has preset time and memory limits for code execution in each programming language. 0 | Permalink. If more than one such hacker has a maximum number of However, I have an interesting observation which is that if you switch from MySQL to MySQL server, then the CTE works, as indicated by the screenshot. hacker_id, COUNT(DISTINCT j. More posts you may like r/learnprogramming. Wanting to learn SQL upvotes Solution – Print Prime Numbers in SQL | Hacker Rank Solution. hacker_id HAVING cnt in ( SELECT MAX(Counter1) FROM ( SELECT COUNT(*) as Counter1 FROM challenges c1 GROUP BY c1. Jan 10, 2025 · Top Competitors – HackerRank Solution; Ollivander’s Inventory – HackerRank Solution; Challenges – HackerRank Solution; Contest Leaderboard – HackerRank Solution; SQL Project Planning – HackerRank Solution; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. from challenges as c2. We define an employee’s total earnings to be their monthly salary x months worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. Could you please tell, Hacker 74842 submitted solutions for challenges 19797 and 63132, so the total score = max(98, 5) + 76 = 174. someone please explain me why this is not correct select N, case when p is null then 'Root' when n not in (select distinct p from bst) then 'Leaf' else 'Inner' end as NodeType from bst order by n; i wrote it with a different logic as it wont find n in p column so it should assign it as leaf but i dont know how its still assigning 1,3 as inner Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. MySQL, As part of a cryptocurrency trade monitoring platform create a query to return a list of suspicious transactions. hacker_id = c. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. nums <= FLOOR (SQRT (a. 75%. After some discussion, we finally decided to pick MySQL Upgrade to 8 as one of the items. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. It’s one of the most sought languages desired by the employers as the volume of To view, all my achievements follow the link to my Hacker-Rank profile. sql sql-server hackerrank sql-query sqlserver hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hacker-rank hackerrank-sql-challenge. +[aeiouAEIOU]$'; You signed in with another tab or window. hacker_id as id, h. 1 day ago + 2 comments. The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. age, a. - GitHub - adarsh2104/journey-to-hackerank-SQL-gold-badge: This repository contains the solutions that I have submitted to earn SQL Gold Badge on the Hacker MySQL; Problem. This tutorial is only for Educational and Learning Purpose. HackerRank, SQL, Alternative Queries, DRAW THE TRIANGLE 1, MySQL, MS SQL, DB2, Hive, APDaga, DumpBox, Akshay Daga, Set, limit, in SQL, Hacker, Rank Causes: Possible Resolution(s) Mismatch of input and output values : Test cases fail when the input passed by your code may not be in the exact format as expected by the test case. coins_needed) FROM wands a1 JOIN You signed in with another tab or window. Hacker_ID, H. Revising Activities involved: Using window functions like ROW_NUMBER, RANK, DENSE_RANK, LEAD, LAG. nums = 0); The logic presented in the In this post, I’ll share my solutions to some SQL problems on HackerRank, categorized as “Easy. #hackerrank#sql#skills#certification. coins_needed = (SELECT Min(a1. Share with friends: Sign Up. . name. name, count (c. github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank MySQL select distinct city from station where not (city like 'A%' or city like 'E%' or city like 'I%' or city like 'O%' or city like 'U%') or not (city like '%a' or city like '%e' or city like '%i' or city like '%o' or city like '%u'); Disclaimer: The above HackerRank concepts & solutions. Solve Challenge. Hackers This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Also, when the output returned by your code is not the exact expected output format, you will see a "Wrong answer" status. Reply reply Top 1% Rank by size . - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Improving the solution from Malkard, here is my simple solution for MySQL: set @ number = 21 ; select repeat ( '* ' , @ number : = @ number - 1 ) from information_schema . Why this video is 7. X AND F2. sql files for the solutions Your recruiter may send you a test that has the proctoring feature turned on. WITH hacker_rnk AS ( SELECT submission_date, hacker_id, ROW_NUMBER() OVER (PARTITION BY hacker_id ORDER BY submission_date) AS rnk FROM ( SELECT DISTINCT submission_date, hacker_id FROM Submissions ) AS i ), date_number AS ( SELECT ROW_NUMBER() OVER (ORDER BY submission_date) AS number, Print prime numbers. Hope this github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank-certificatio hackerrank Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. challenge_id from Submissions s INNER JOIN Challenges ch ON s. max_mark ORDER BY G. The crucial way through which harnessing the power of discussion forums can be maximized and the process of learning in MySQL challenge from hacker rank. grade, S. aecekbrl yiyaobo wenaos ekxw ahp yenf ewofv ycrb wxld hlhas