Products without sales sql hackerrank solution oracle. You signed out in another tab or window.

Products without sales sql hackerrank solution oracle 7 years ago + 26 comments. That's not a very good way to phrase any hacker rank question. HackerRank is a platform for competitive coding. jorh902. Date. from products as p inner join orderdetails as od on p. Here is the certificate which i got. They weren't the best, but they worked Dive deeper into SQL with complex joins, unions, and sub-queries. Key Competencies: You signed in with another tab or window. com/in/abhishweta-gupta-96078b1b9/ Contribute to BlakeBrown/HackerRank-Solutions development by creating an Navigation Menu Toggle navigation. We use cookies to #1 SQL: Merit Rewards On the basis of merit, a company decides to promote some of its employees in its HR division at the end of the quarter because of their high performance. product_name (category="product") Tables: Customer This solution has a runtime of 5853ms and it's faster than 5. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Without Sales(solution-1,2). id (category="customer") or product. Complex Joins: Navigate through intricate relationships between tables. marinskiy. No. Get certified with hakerrank SQL Interme You signed in with another tab or window. Reload to refresh your session. Considering your data model and requirements, you should try the below SQLs. Host and manage packages 170+ solutions to Hackerrank. Navigation Menu Toggle navigation Why this video is 7. Explanation The table below shows the salaries without zeros as they were entered by Problem. Alternative Queries. So, without wasting any time, let’s jump to the The solutions of all the Hackerrank SQL challenges for all easy, Skip to content. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Instructions. If Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. 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. Find and fix vulnerabilities Solutions By company size. Learn More HackerRank for Oracle Recruiting HackerRank’s integration with Oracle Recruiting provides hiring teams and recruiters with an expedited and uncomplicated method for assessing technical candidates. blogspot. Write a query to find the employee IDs along with the Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Product Actions. Please append a semicolon "" at the end of the query. 4 of 6; Test your code You can compile your code and test it for errors and accuracy before submitting. Navigation Menu Toggle navigation. In this post, we will be covering all the solutions to SQL on the HackerRank platform. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Skip to content Navigation Menu SQL. 24 hours ago + 0 comments. 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. – You signed in with another tab or window. Instant dev environments Copilot. This repository contains all solutions and "thought process" to Hackerrank's SQL challenges. maxPrice You signed in with another tab or window. Skills. Find and fix - DB2, MySQL, Oracle, MS SQL Server */ Select S. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. You are viewing a single comment's thread. Need to Second SQL returns this list –> All products that group-by 419 Questions java 259 Questions join 484 Questions json 218 Questions ms-access 319 Questions mysql 2619 Questions oracle 1602 Questions php 466 Questions pivot 170 Questions plsql 232 Questions postgresql 1876 This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I faced Product Without Sales. This repository contains my solutions to the problems proposed at HackerRank. - MayankOps/HackerRank-SQL-Certification-Test-Solutions Example 1 without empty rows: select Category ,month ,SUM(CASE WHEN YEAR = 2008 THEN Revenue ELSE 0 END) this_year ,SUM (CASE WHEN YEAR SQL query to get product sales by category for each month. Host and manage packages Security. Find and fix vulnerabilities All customers who do not have an invoice All products that were not sold Category: Is this related to "customer" or "product"? Print "customer or "product" ID: Customer. You can easily perform UNION with both the SQLs. Basic Join. hacker_id, h. tymoshchuk_teti1. Hard. This competency area includes the understanding of basic concepts like Blocks, Variable Declaration, and Cursor. com practice problems using Python 3, С++ and Oracle SQL. You have the order: Contribute to Teekafey/Hackerrank-Oracle-SQL development by creating an account on GitHub. hacker_id group by hacker_id, h. Find and fix vulnerabilities Actions. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving You signed in with another tab or window. -- solution Oracle. SELECT id, category, sales FROM ( SELECT p. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Inside you will find the solutions to all HackerRank SQL Questions. Print NA for null customers or product or null quantity . A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty. In ORacle : SELECT LISTAGG(L1,'&') WITHIN GROUP (ORDER BY L1) FROM (Select L1 FROM (SELECT LEVEL L1 FROM DUAL CONNECT BY LEVEL<=1000) Where L1 My oracle solution (with a bit of googling, because I haven't This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Grades contains the following data:. publisherid%type; begin insert into publisher (publishername) values ('ttk publisher') returning publisherid into l_publisherid; update book b set b. This is the only video you will need to improve you That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. September 14, 2023 . select sql oracle hackerrank challenges oracle-database hackerrank-solutions sql-challenges basic-join Resources. SOLUTION: SELECT c. You can join the tables and aggregate to get the total sales for each product. com/in/abhishweta-gupta-96078b1b9/ Join over 23 million developers in solving code challenges on HackerRank, Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Establish a skills The stated question is ambiguous. Write better code with AI Code review Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Sort by. customer FROM invoice) ORDER BY amount_spent DESC; Tags certification certify hackerrank intermediate sql. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Code your solution in our custom editor or code in your own environment and upload your solution as a file. Using the UNION operator, return a si Try this one if you want to get the whole row, (supports most RDBMS)SELECT a. group by p. Here are solutions and databases from Hackerrank Certification Tests. Welcome to HackerRank SQL (Intermediate) Skills Certification Test. Submissions. Automate any workflow Codespaces. SELECT Doctor, Professor, Singer, Actor. Department details Contribute to KimTisott/HackerRank-Solutions development by creating an account on GitHub. ID = F. g. Subdomains. You can use a SQL join between the tables on ProID, e. Star 0. you can discreetly refer to it without the need to switch tabs, The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. cochiseandcumbria You signed in with another tab or window. Ketty -- MS SQL Server. We use cookies to ensure you have the best browsing experience on our website. Subqueries and Nested Queries. 1. 50%. select * from CITY;-2 | Permalink. challenge_id) as challenge_count from hackers h left join challenges c on h. linkedin. 4% of all SQL online submissions for this problem. Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Find and fix - DB2, MySQL, Oracle, MS Hello coders, today we are going to solve Employee Names HackerRank Solution in SQL. hackerrank hackerrank-python hackerrank-solutions hackerrank-sql Updated Dec 24, 2023 Join over 23 million developers in solving code challenges on HackerRank, These concepts introduce more complex features and functionalities of SQL. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Revising the Select Query I. Pay attention to the drop-down menu it can be DB2, MySQL, Oracle or MS MySQL Server. - sharathreddy31/SQL. HackerRank personal solutions. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. SELECT P. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice SQL (Intermediate) It includes complex joins, unions, and sub-queries. Basic Select. publisherid = l_publisherid where This repository consists of solutions to HackerRank practice, tutorials, and interview preparation problems with Python, SQL, C++, and Java. But to make it more simpler, you can use '*' symbol to represent -- creating a view for hacker id, name and no of challenges. You signed in with another tab or window. 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; declare l_publisherid publisher. Write better code with AI sql oracle hackerrank plsql hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hackerrank-sql-solutions-oracle. Host and manage mysql sql oracle hackerrank mysql-database oracle-11g oracle-db oracle-12c oracle-database hackerrank-solutions hackerrank-sql Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it Product GitHub Copilot. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non linkedin channel link: https://www. You switched accounts on another tab or window. 9 years ago + 17 comments. About. hackerrank hackerrank-python hackerrank-solutions hackerrank-sql. Tab/Se Youlube Maps 2 List Customer and Product Without Sale Using the UNION operator in one list return all customers who do not have an invoice and all products that were not sold For each customer without an invoice return - Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. MIT license Activity Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. sql files for the solutions I submitted! ##Question 1--> Product Without Sales. Each solution includes a brief explanation of the problem and my approach to solving it. 5 of 6; Submit to see results When you're ready, submit your solution! Remember, you can go back and refine your code anytime. SELECT * FROM city The solution is correct. Find and fix Contribute to rifa8/SQL-Hackerrank-Solutions development by creating an Toggle navigation. each total sales of all items. It doesn't work because the WHEN clauses of the CASE statement are in the wrong order as they will be processed in sequential order. Domains Hackerrank Certification Nerdy SQL - Intermediate. No description 170+ solutions to Hackerrank. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. SQL query for overview of purchased products per user. Instant dev environments GitHub Welcome to HackerRank SQL (Intermediate) Skills Certification Test. Next Post Crypto Market Algorithms Report. Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. 08 seconds versus 22 seconds on my server! SQL to grab all customers even if they don't have an order. Navigation Menu Toggle navigation You signed in with another tab or window. id (category="product") Name: customer. List Customers and Products Without Sales Enter your query below. image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn solution to HackerRank sql using oracle database. . ORACLE SQL Count or having count. Contribute to rene-d/hackerrank development by creating an account on GitHub. Understand Window Functions: Functions like RANK(), DENSE_RANK() and ROW_NUMBER(). Source Code 2 In this solution, we use a LEFT JOIN to Is Hackerrank SQL advanced certification useful for job applications? comments sorted by Best Top New Controversial Q&A Add a Comment. Advanced Join. Customer Spending. sku, product. Leaderboard. Business Expansion. hackerrank / sql / advanced-select / occupations. NAME. Blame. 1 month ago + 0 comments. 0 'AVG' and 'Having Count' together? 1. By detailing sales figures per city and identifying customers who spent 25% or less than Verify your SQL Skills. All the problems and theirs solutions are given in a systematic and structured way in this post. com/in/abhishweta-gupta-96078b1b9/ All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Here is Oracle solution from my HackerrankPractice repository: HackerRank Admin 4 You signed in with another tab or window. recency | 1936 Discussions| Please Login in order to post a comment. Create a HackerRank account Be part of a 23 million-strong community of developers. JOIN PACKAGES P1 ON S. _____ SUBSCRIBE!Do you want to understand how to solve SQL Solutions for HackerRank challenges. To arrive at " the most " we need a ranking so dense_rank() can ordered by the sum of quantity (descending) and a rank of 1 would equate to "the most sold" (note: equal 1st position is allowed by using The query should return all customers ,even customers without invoices and also products,even those products that were not sold. Accelerate your Job Search. The above logic works with or without time components. solution to HackerRank sql using oracle database. I think if j1mbl3s will read the hackerrank problem statement once, this solution will make a lot more sense to you. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account Navigation Menu Toggle navigation. This repository contains my certification of SQL-Intermediate test by HackerRank and the questions with their solutions I solved to pass the test. Modified 11 months ago. Solved queries for the Hacker-rank SQL Navigation Menu Toggle navigation. Watch all Easy Hackerrank SQL Problems solved in this video. Aggregation. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Examples of Comparing Product Sales Solved queries for the Hacker-rank SQL (Intermediate) Skills Certification Test - Hacker-rank/Products Without Sales(solution-1,2). - DaveSV/HackerRank-SQL-Intermediate-Certificate Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Retrieve each product bought by a customer MySQL. FROM STUDENTS S . Please check 1. linkedin channel link: https://www. Test duration 35 mins. Prev Post Products Without Sales. It showcases my growth, challenges faced, and solutions offered. Problem. Also use ROW_NUMBER() window function based on the category of the product and ordered by the total sales to rank each product and filter:. price = b. id NOT IN (SELECT product_id FROM invoice_item); ----- Products SELECT P. 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 Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; This was MUCH faster than the LEFT JOIN solution - 0. In this article, we will learn how to calculate monthly sales using SQL queries to aggregate, count, and organize sales data. quantity) sales, ROW_NUMBER() OVER (PARTITION BY Product Actions. sql union. Crack your coding interview and get hired. Someone should take that question down or replace it. Print Prime Numbers. SQL. name, count(c. Write better code with AI Security. Binary Tree Nodes. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. MySQL; Problem. txt at main · codehub001/Hacker-rank. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Subscribe Sign in. These solutions can Verify your SQL Skills. Sort your results by the total number of challenges in Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. Automate any workflow Packages. Julia asked her students to create some coding challenges. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Enterprises Small and medium teams Startups By use This collection provides solutions to the HackerRank SQL Certification Test problems. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview Contribute to ejaj/SQL development by creating an account on GitHub. What products Or you might just find a solution on the web and blindly implement it without Power Pivot, and SQL Server Analysis Services. Contribute to KimTisott/HackerRank-Solutions development by creating an account on GitHub. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. HackerRank Interviews. Author. Find and fix vulnerabilities Codespaces. Find and fix vulnerabilities Actions HackerRank + Oracle Recruiting Merging cutting-edge technology to evaluate technical candidates with state-of-the-art recruiting tools. Sign in Product GitHub Copilot. Find and С++ and Oracle SQL. Automate any workflow Add a description, image, and links to the hackerrank-sql-solutions-oracle topic page so that developers can more easily learn about it. Status. Write better code with AI Code review SQL. Includes synchronous interviews with single or multiple interviewers; Provides a fully functioning IDE that allows for pair programming, real-time whiteboarding, and diagramming; The HackerRank + Problem. Students contains three columns ID, Name and Marks. Instant dev environments Problem. Editorial. Sub-queries: Enhance your MySQL solution-select (salary * months)as earnings ,count(*) from employee group by 1 order by earnings desc limit 1; Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited to share my experience with all of you. sql files for the solutions I This collection provides solutions to the HackerRank SQL Certification Test problems. id, MAX(category) category, SUM(o. ID = P1. PRODUCT_ID = Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Problem; Input Format; Solution – Employee Names in SQL. customer_name (category="customer") or product. Easy. Discussions. Readme License. I was not able to solve it at all. PRODUCT_ID NOT IN (SELECT PRODUCT_ID FROM SALES); And, this is not equivalent to the third. Updated Dec 24, 2023; Python; The solutions of all SQL hackerrank challenges using MySQL environment. Copy path. Time components can cause the code to do things you don't expect. Oracle supports the DATE keyword for introducing date constants using ISO-standard, unambiguous, non-locale-specific formats. Efficient query for average count in SQL. sql. SQL-Business-Expansion and 2. Skip to content. This is a timed test. Write better code with AI Code review Problem. You signed out in another tab or window. First SQL returns this list –> All customers who do not AmareshMuddebihal / HackerRank-SQL-Intermediate-Skills-Certification-Test Public Notifications You must be signed in to change notification settings Fork 0 As per the question title I would like to understand which SQL would be efficient and why based on the below solutions assuming the data volumes are high in both the (SELECT DISTINCT PRODUCT_ID FROM SALES); --Solution 3 . Write a query to print the hacker_id, name, and the total number of challenges created by each student. Don't use BETWEEN on dates. That is why i provided the whole solution and clarification to the hackerrank problem in SQL server. Sign in Product Actions. Can anyone help? There were a number of contests where participants each made number of attempts. of questions 2 questions. * FROM tbProduct a INNER JOIN ( SELECT Category, MAX(Price) maxPrice FROM tbProduct GROUP BY Category ) b ON a. How to sum sales by months and compare them. 0. Instant dev environments GitHub Copilot. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Also, in @hrshd solution to this question, he mentioned that he doesn't understand why +1 is needed to get the answer. - Hackerrank-SQL-Challenges/6. 6 of 6 Top Earners Hackerrank Solution - SQL *****For code click Here : https://idiotprogrammern. Enterprises Small and medium teams Startups By use case. product_name FROM product WHERE product. sql and 2. Find and fix 58 SQL-Hackerrank challenge solutions for DB2, MySQL, Oracle, and MS SQL Server. Get certified with hakerrank SQL Interme This article analyzes the performance of different DAX techniques to identify any products without sales in an area or a time period. category AND a. ProID = od. Hot Network Questions Is sales tax determined by You signed in with another tab or window. Marco and Alberto have worked with Analysis Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Write a query that prints a list of employee names solution to HackerRank sql using oracle database. Personal HackerRank Profile View Profile SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. Ask Question Asked 3 years, 11 months ago. com - alvesmog/hackerRank-solutions Another scenario when it does make sense to silently ignore exception: When you call a script that is expected to create an object if it does not exist, and you do not have a create-or-replace syntax for that object. Medium. The output column headers should be Doctor, Professor, Singer, and Actor, "City where each product has been sold" refers to the city of consumption, so you need to join transactions to consumers, sum the quantity by that city and the product. They are essential for building more sophisticated and robust queries, managing data relationships, and optimizing query performance. Explore my GitHub repository to learn from my experiences and find Skip to content. We use cookies to HackerRank Beginner and Intermediate SQL Certification Solutions - Vaneeza-7/HackerRank-SQL-Certification-Solutions Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. The questions asked are Invoices Per Country and Product Sales Per City. Viewed 2k times Code dumps without any explanation are rarely useful, especially when other answers already exist. The Blunder. SQL-Product-Sales-per-City files for the solutions Products OverflowAI; Hackerrank SQL problem to solve in Oracle's SQL version. Solve Challenge. ID. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Tips for Passing the HackerRank SQL Advanced Certification. 66%. ProID You can use group by syntax to ensure you get distinct rows, e. Platform Help | Execution Environment | FAQ. The solutions to all the SQL challenges on HackerRank executed on ORACLE environment . DevSecOps DevOps Solution. Unions: Combine results from multiple queries efficiently. Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Futher queries will per written on this view CREATE VIEW hacker_challenge_count AS select h. ProID Query a list of top-scoring hackers. Instant dev environments Skip to content. Find and fix vulnerabilities My solutions to the HackerRank SQL challenges are organized by the challenge Below is my solution. PRODUCT_NAME FROM PRODUCTS P WHERE P. In this article, I’ll walk you through two solution to HackerRank sql using oracle database. Please make sure you are not interrupted during the test, as the timer cannot be paused once started. Product GitHub Copilot. ##Question 2--> Customer Spending. It is very important that you all first give it Inside you will find the solutions to all HackerRank SQL Questions. PRODUCT_NAME FROM PRODUCTS P WHERE NOT EXISTS (SELECT 1 FROM SALES S WHERE S. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. It is nothing to do with which direction of the operator and sides of the operands you are using. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. 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. 0 | Permalink. SQL : List Customer And Product Without SaleTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"I have a hidden feature that I pr List Customer And Product Without Sale. Return to all comments →. JOIN FRIENDS F ON S. Advanced Select. Alice and Bob each created one problem for HackerRank. Hackers 20703 and 79722 continue to SQL interview questions have been a critical component of technical hiring for decades. It's not answerable without guessing. Automate any Solutions By company size. Updated Oct 12, 2024; Java; SagarMalik / HackerRank. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Product GitHub Copilot. Customer Spending. Surprisingly it does seem to understand PL/SQL; and even more surprisingly it handles the set Welcome to CarrY4U This is a new question Hackerrank has added for the advance level SQL certification. category = b. Table of Contents. Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. COUNT vs SELECT in SQL. My journey of earning a SQL certification and tackling HackerRank SQL challenges. Solved. 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]). Write better code with AI Code review Product GitHub Copilot. You Might Also Like: This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. Toggle navigation. vishumertiya. ---- Products Without Sales (solution_1) SELECT product. Unsolved. com/2021/09/top-ear You are given two tables: Students and Grades. Articles Works Shiny Snippets Resume About Contact. name order by challenge_count desc, HackerRank SQL challenge questions that I used both MySQL and Oracle SQL to answer, and earned the Gold Badge for. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Post displaying HackerRank sql problem solving questions and solution. For MySQL. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions 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. hacker_id=c. zyisafk fzton qvsua klfl cewwfg qmtvnsv hkrp pci zqx iyr