Customer spending sql hackerrank solution mysql customer_name, FORMAT(SUM(i. Find how many products falls into customer budget along with list of products. Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Share this post. The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled. - Ishika63/HackerRank-SQL-Intermediate-Solution. 317 efficient solutions to HackerRank problems. id as id, product_name as name from product p left join Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Samantha Julia Scarlet Explanation. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution . sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions In this Leetcode Customers Who Never Order problem solution Suppose that a website contains two tables, the Customers table, and the Orders table. 596. y FROM (SELECT first_function. Sort by. hacker_id as id, h. Watch also my other videos for more SQL Certification Solutions. Solution Example of Hackrank of my-sql. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Code Issues Pull requests This repo You signed in with another tab or window. Updated Jan 26, 2021; pankajkumarravi / SQL-Hackerrank. Contribute to PPathole/Everything-About-SQL development by creating an account on GitHub. Crystal X. Submissions. 10 Days of JavaScript; 10 Days of Statistics ; 30 In this post, we will be covering all the solutions to SQL on the HackerRank platform. Advanced Join. 1 day ago + 0 comments. ” I used the MySQL option on the platform to solve each of the challenges. supriya22399. sql and 2. select 'product' as category, p. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu HackerRank Solutions in SQL Welcome to the HackerRank Solutions repository, where you can find comprehensive solutions to various HackerRank problems implemented in SQL. total_price), 6) AS amount_spent FROM customer c JOIN invoice i ON c. ##Question 2--> Customer Spending github mysql sql certificate hackerrank certification collaborate hackerrank-solutions hackerrank-sql hackerrank-sql-solutions gitlens hackerrank-certification student-vscode github-campus-experts hackerrank-certificatio Post displaying HackerRank sql problem solving questions and solution. Population Census . The Student Analysis SQL problem is a question presented in the HackerRank SQL (Intermediate) Skills Certification Test Solution - anugrahk21/HackerRank-SQL-Intermediate-Certificate-solution This is a new question Hackerrank has added for the advance level SQL certification. Here is a solution for your problem: SELECT customers. The output column headers should be Doctor, Professor, Singer, and Actor, If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. sql at main · arknf/SQL-Challenges. - SQL-Hackerrank-Challenge-Solutions/Advanced Select/Occupations. 3 days ago + 0 comments. This repository contains python solutions for some of the HackerRank problems from the SQL genre. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. 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 . 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 Inside you will find the solutions to all HackerRank SQL Questions. WITH max_scores AS ( SELECT hacker_id, challenge_id, MAX(score) AS max_score FROM Submissions GROUP realNameHiddenRevising the Select Query I Hackerrank SQL Solution*****If You want Query Click Here: https://realnamehidde This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. OrderDetails. These solutions were completed during a test on August 21, 2023. SELECT P. See Answer See Answer See Answer done loading. No comments. Follow This repository contains MySQL solutions of the Hackerrank SQL Intermediate questions - 007aneesh/Hackerrank-SQL-Intermediate-Solutions. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. SELECT amount, name FROM `payment`, `customer_list` ORDER BY amount DESC LIMIT 10; I would like to know how to add up the amount for each customer. Product Without Sales. I have two separate queries that work fine. Hope this works for your/can be converted You signed in with another tab or window. My code for this challenge is in MySQL: SELECT c. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions SQL. Symmetric Pairs. valsze. total_price) AS DECIMAL(9,6)) AS total FROM customer c INNER JOIN invoice i ON c. )? – NickW Commented Jul 4, 2022 at 12:53 Problem. I started studying SQL from a very famous site - HackerRank. ________ Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. It will help you learn and understand SQL in a better way. Customer Spending. SQL. Write better code with AI Security. Navigation Menu Toggle navigation. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. Sign in Product GitHub This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Customer Spending. P(R) represents a pattern drawn by Julia in R rows. The test consisted of two questions that I had 35 minutes to solve. You signed in with another tab or window. Return to all comments →. Leaderboard. Weather Observation Station 9. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. SELECT SUM(items. Instant dev environments Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. mysql challenge sql hackerrank mysql-database hackerrank-solutions hackerrank-sql hackerrank-sql-solutions. e. HackerRank concepts & solutions. The case (uppercase Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. custID=customers. Write better code About. Business Expansion. Find and fix vulnerabilities Codespaces. x, paired_functions. instagram. customer_id=customer. select 'customer' as category, c. Edit: I realized my suggestion would overlook multiple customers with the same total spending amount. Navigation Menu Toggle HackerRank MySQL challenge solution in the MySQL Advance Track - GitHub - hammad-ali-shah/SQL: HackerRank MySQL challenge solution in the MySQL Advance Track Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL - shanuhalli/MySQL-Basics-to-HackerRank. . You signed out in another tab or window. Please follow us https://www. customer_name, CAST (SUM (i. Skip to content. 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. Schema. 8 years ago + 36 comments. 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. They weren't the best, but they worked! :) They weren't the best, but they worked! SUBDOMAINS: HackerRank concepts & solutions. Open main menu. sql files for the solutions I submitted! ##Question 1--> Product Without Sales. I need to add up all purchases for each customer and put them in descending order. Automate any workflow Codespaces. Reload to refresh your session. Write better code You signed in with another tab or window. By detailing sales figures per city and This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. Plan and track work Code Review. ohyongxiang. Fariha Shah. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. customer_name,CAST(invoice. total_price AS DECIMAL(10,6)) Amount FROM customer INNER JOIN invoice ON invoice. hacker_id) as cnt FROM hackers h INNER JOIN challenges c ON h. custome Customer Stories Partners Executive Insights Open Source GitHub Sponsors SQL HackerRank Solutions. Products. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Customer Stories Partners Executive Insights Open Source GitHub Sponsors Welcome to the HackerRank SQL Solutions Repository! This repository contains my solutions to various SQL challenges from HackerRank. Date. This repository is complete and contains solutions to all the HackerRank SQL Practice Questions of all difficulty types. 8223 words 42 min read Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non SQL. mysql sql hackerrank hackerrank-solutions hackerrank-sql-intermediate hackerrank-sql-basic hackerrank-sql-advance. Contribute to ejaj/SQL development by creating an account on GitHub. id is null Second SQL returns this list --> All products that were not sold . Updated Jul 25, 2023; Improve this page Add a description, image, and links to the hackerrank-sql-intermediate topic page so that The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. You are viewing a single comment's thread. Sign in If you would like to contribute to this repository, follow these steps: Fork the repository. - amalmosai/SQL-HackerRank-Solutions Packages. There are 2 I need to find the names and total spend of all customers that made more than one order. Hackerrank SQL advanced certification . The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. customer_id GROUP BY c. Question: Using MySQL, write a query to List all customers who Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. September 14, 2023 . 25*AVG(invoice. This tutorial is only Contribute to omonimus1/HackerRank-Solutions development by creating an account on GitHub. Here I will try to provide multiple approaches & solutions to the same problem. Each one I encountered a similar situation where my CTE didn't work in HackerRank's MySQL environment. The STATION table is described as Saved searches Use saved searches to filter your results more quickly Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. These folders contain solutions for all easy, medium and difficult challenges executed Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. cochiseandcumbria • Additional comment actions. Business Expansion. id as id, customer_name as name from customer c left join invoice i on c. Hackerrank Certification Nerdy SQL - Intermediate. Star 0. Learn about basic MySQL and My solutions to various HackerRank SQL problems using This repository contains my solutions to various HackerRank certification challenges. Problem. I have been looking online for some help with totaling queries but couldn't find any good examples. Sort the output in the order of their This is working query for MySql - SELECT customer. These solutions can 170+ solutions to Hackerrank. Plan and track work Why this video is 7. This table has date of sale and customer id as well. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Hackerrank SQL Solution #1Intermediate SQL - Weather Observation Station 5#sql #hackerrank #hackerrankcourse #codingcourse #sqlcourse #coding #solutions #int Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Write better code 19. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Hacker Rank SQL. 19. Sign in Product Actions. Problem 1. community/OVER ([PARTITION BY columns] [ORDER BY columns])https://learnsql. These challenges cover a wide range of programming topics and are designed to assess and validate your coding skills. 12; Scarlet’s best friend got I have a sales table which has one row for each sales tranaction. Manage code changes Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Discussions. Contribute to omonimus1/HackerRank-Solutions development by creating an account on Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Instant dev environments Issues. POPULATION) FROM CITY, COUNTRY WHERE CITY. Probably not, but it can't hurt if you have it. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Skip to content Navigation Menu Most of the things you need to know about SQL. It is very important that you all first give it a try & brainstorm yourselves before having a In this post, I’ll share my solutions to some SQL problems on HackerRank, categorized as “Easy. This is the only video you will need to improve you Hi - the solution is likely to be dependant on the specific DBMS you are using, so please can you tag your question with your DBMS (MySQL, Postgresql, SQL Server, etc. Please check 1. Articles Works Shiny Snippets Resume About Contact. y FROM (SELECT x, y, SQL. 7 years ago + 22 comments. This is an intermediate SQL Problem. Feel free to explore the solutions and the approach I took to solve these challenges. id WHERE invoice. For each customer, display their name and the amount spent to 6 decimal places. For now, I'm returning all the rows to PHP, doing a sort, and then picking the middle row, but surely there must be some simple way of doing it in a single MySQL query. FirstName, P. The questions asked are Invoices Per Country and Product Sales Per City. total_price)) FROM invoice ) GROUP BY Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Each solution includes a brief explanation of the problem and my approach to solving it. com practice problems in C++, python and SQL - Hackerrank_solutions/SQL/15 Days of Learning SQL. 6 hours ago + 0 comments-- creating a view for hacker id, name and no of challenges. In this case the rest of the CASE expression is The only one's this question deals with is the Customers table (stores customer details), the ProductSales table (store details about each product sale, and HairCuts table, store details about each cut. Order the result by the amount spent from high to low. RodneyShag. _____ SUBSCRIBE I have used MySQL and MS SQL Server for the solutions. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. This repository contains my solutions for the HackerRank intermediate-level problems using MySQL. Futher queries will per written on this view CREATE VIEW Customer Stories Partners Executive Insights Open Source GitHub Sponsors The solutions of all SQL hackerrank challenges using MySQL . SELECT DISTINCT paired_functions. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. quantity) AS "total_spent" FROM orders INNER JOIN customers ON orders. This repository provides comprehensive solutions to all HackerRank SQL Practice Questions, implemented using a MySQL environment. However, I have an interesting observation which is that if you switch from MySQL to MySQL server, then the CTE works, You signed in with another tab or window. Plan and track work Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. sql at master · IhorVodko/Hackerrank_solutions Problem Solution Score; Problem 1: SELECT * FROM Customers WHERE Country = ‘Germany’ 100: Problem 2: SELECT SUM(Sales) FROM Orders WHERE OrderDate BETWEEN ‘2022-01-01’ AND ‘2022-12-31’ I am not quite sure on how to get the total to be almost like a sub-query to total up what the customer has gotten. Crack LeetCode SQL Interview Questions. 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. Give a star For my work. Leaderboard . sql files for the solutions I Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. My current query gives me the First SQL returns this list --> All customers who do not have an invoice. unitcost*lineitems. The tables I'm using are: Customers. Classes More Than 5 Students. The customer ids of interest are 3 and 4. I was not able to solve it at all. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. Each challenge has a Country code | hackerrank Mysql certification solution Write a query to retrieve a list of all customer ids, names, and phone numbers, with their country codes concatenated with their phone numbers. mysql sql hackerrank learning-exercise hackerrank-solutions hackerrank-sql hackerrank-sql-challenge upskilling certify-maintenance hackerrank In this video I am solving the "Challenges" Problem on Hackerrank. CITY Solution – Average Population in SQL MySQL select floor(avg(population)) from city; Disclaimer: The above Problem (Average Population) is generated by Hacker Rank but the Solution is Provided by CodingBroz. recency | 1463 Discussions| Please Login in order to post a comment. HackerRank SQL Challenge Solutions . Updated Oct 11, 2023; Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. customer_name, CAST(SUM(i. Write a SQL query to find all customers who never order anything. Basic Join. Find and fix I am trying to find which top 10 customers have spent most money in the store. Create a new branch for your contribution. 1 minute read. I need a query that will list the total spent on both hair cuts and products for each customer in the customers table. My Solutions for SQL Challenges on Hackerrank and LeetCode - arknf/SQL-Challenges . orderId INNER JOIN customers ON orders. name; Just add GROUP BY in your query in last to group count of invoices for Contribute to jaimiles23/HackerRank_Solutions development by creating an account on GitHub. HackerRank SQL Problems and Solutions — 1. Customer Stories Partners Executive Insights 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-sql-certificate hackerrank-sql-solution hackerrank-intermediate-sql. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Improve this question. id = i. Topics HackerRank concepts & solutions. sql files for the solutions I submitted! Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. It is very important that you all first give it a try & brainstorm yourselves before having a This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I faced during the test. HackerRank is a platform for competitive coding. recency | 2463 Discussions| Please Login in order to post a comment. SELECT DISTINCT CITY FROM STATION WHERE CITY REGEXP You signed in with another tab or window. Orders. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. customer_id where i. Adi The PM's The customer spending question answer of hacker rank is wrong the correct answer is SELECT c. Any help would be wonderful! Thank you (I am pretty new to SQL and with cte1 as (select D, row_number() over() as row_num from (select case when occupation like 'Doctor' then name end as D from occupations group by D order by D) as F where D is not null), Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. 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. com/blog/sql-over . Use SQL to hackerrank sql certification solutions. Hackerrank is Hello coders, today we are going to solve Challenges HackerRank Solution in SQL. 4 posts. Now, Samantha’s best friend got offered a higher salary than her at 11. Updated Nov All Solutions in Hackerrank SQL Section. Please read our cookie policy for more information about how we use cookies. These are not the only solutions. Sign in Product GitHub Copilot. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. SOLUTION: SELECT c. Make your changes, add new features, or fix issues. In case of clash, chose the less costly product In case of clash, chose the less costly product SELECT Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. recency | 2137 Discussions| Please Login in order to post a comment. total_price<= (SELECT (0. name as name, COUNT(c. Weather Observation Station 4 | Easy | HackerRank Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. For example, get all customers who spent between 100 and 1000, between 2016-07-01 and 2016-08 Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. SELECT SUM (CITY. 58 SQL-Hackerrank challenge solutions for DB2, MySQL, Oracle, and MS SQL Server. For instance, the first 5 rows should have a total of 180. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on You signed in with another tab or window. Write a query to print the pattern P(20). Skip to content . com/dev. 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. orderId = orders. Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. Can anyone help? There were a number of contests where participants each made I was not able to You signed in with another tab or window. CONCAT(N, ' Inner'). About. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. The repository contains 6 folders. - qanhnn12/SQL-Hackerrank-Challenge-Solutions. customerId GROUP BY Customers. total_price) AS DECIMAL (9,6)) 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. Automate any workflow Security. Author. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution I have to determine which customer generated the most total revenue. Guestbook. Customer Stories Partners 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-sql-certificate hackerrank-sql-solution hackerrank-intermediate-sql. Akzhol. The following pattern represents P(5):. Navigation Menu Toggle navigation . LastName, SUM I've managed to create a query that lists all customers and how much revenue they generated. 55; Julia’s best friend got offered a higher salary than her at 12. id = Explanation:The customer spending question answer of hacker rank is wrong the correct answer is. My own HackerRank coding interview solutions. If you find them helpful This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. Order Problem. Challenges. 40. There are almost always multiple solutions to the same problem. My Solutions for SQL Challenges on Hackerrank and LeetCode - SQL-Challenges/Customer Placing the Largest Number of Orders. Contest Leaderboard. MySQL solution. Contribute to hetvi20/hackerrank-solution-mysql development by creating an account on GitHub. Sep 11, 2024. After your test cases get passed!!!! Happy Learning!!!! Hello coders, today we are going to solve Print Prime Numbers HackerRank Solution in SQL. Reply ComicOzzy datetime manipulator • Additional comment actions. Ok | Prepare; Certify; Compete; Apply; Hiring developers? Log In; Sign Up; Prepare. Find and fix vulnerabilities Actions. Sep 15, 2024. We use cookies to ensure you have the best browsing experience on our website. In this video I am solving the intermediate Certification Skills Test on Hackerrank. custID GROUP BY firstname HAVING COUNT(DISTINCT orderID)>1 LIMIT 0,30 mysql; sql; Share. Amount is money spent on 1 purchase. From my HackerRank solutions. List all customers who spent 25% or less than the average amount spent on all invoices. So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. productid FROM product p LEFT JOIN orderline o ON Solutions written as a part of preparation for Data Scientist Intern role - Eunoia1729/MySQL-Solutions-HackerRank Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hacker_id = c. Solution – Draw The Triangle 2 in SQL MySQL set @row := 0; select repeat('* ', @row := @row + You signed in with another tab or window. I'm trying to calculate the total purchase amount of each customer from the database available online on W3 Schools. Sample Output. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. I am looking for a way to select all those customers who have total spending in the specified range with in a specified date range. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu In this post, I’ll share my solutions to some SQL problems on HackerRank, categorized as “Easy. Is Hackerrank SQL advanced certification useful for job applications? comments sorted by Best Top New Controversial Q&A Add a Comment. 10 Days of JavaScript; 10 Days of SQL. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions . Basic Select. SELECT p. Certification; Gotham Coding; Student Analysis SQL HackerRank Solution. I've reworked it to use MAX and show multiple customers (if applicable). What's the simplest (and hopefully not too slow) way to calculate the median with MySQL? I've used AVG(x) for finding the mean, but I'm having a hard time finding a simple way of calculating the median. All Solutions are made in the MSSQL Syntax. CodingBroz Coding Made Simple Home; Blog; Coding Tips; HackerRank Menu Toggle. x, first_function. Mar 31, 2024. Published on November 5, 2020 . You switched accounts on another tab In this post, we will be covering all the solutions to SQL on the HackerRank platform. You switched accounts on another tab or window. name, COUNT(*) as number_of_invoices FROM invoices INNER JOIN orders ON invoices. Hacker rank SQL intermediate solution. customerId = customers. The HackerRank Question is here. I've managed to create a query that lists all customers and how much revenue they generated. Effective solutions to hackerrank. SELECT c. cvinjc otfnx sgy rpmneqd lyth pqzarr tpyq uojno tixivjv yihnk