List customer and product without sales hackerrank oracle sql server. Write better code with AI Security.
List customer and product without sales hackerrank oracle sql server. Reload to refresh your session.
List customer and product without sales hackerrank oracle sql server patients is the table name which has the first name and last name column. This article talks about performing relational division in SQL in great detail and helped to clear things up a lot for me, Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog My code is super clumsy. The HackerRank Skills Certification Test is a standardized assessment to help developers prove their coding skills. 15%. HackerRank + Oracle Recruiting Merging cutting-edge technology to evaluate technical candidates with state-of-the-art recruiting tools. Automate any workflow Sep 27, 2024 · 1 stories · Enhance your SQL skills with these engaging HackerRank challenges. select h. How can I select from list of values in SQL Server. 170+ solutions to Hackerrank. id NOT IN (SELECT product_id FROM invoice_item); ----- Products Product GitHub Copilot. Here's their snippet that won't seem to run for me in Chrome. Clarification: I want a row for Aug 22, 2024 · You signed in with another tab or window. sql hackerrank sqlserver hackerrank-solutions hackerrank Códigos em SQL (Oracle e MS Server), para aprendizado e referência. I can list them all but not just the ones I want, might not understand Rank(), ROW_NUMBER(), FIRST_VALUE use in Oracle. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice. Reload to refresh your session. Skill over pedigree. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company SELECT TOP 1 sales. Concat is an SQl server function that takes a variable number of string arguments and concatenates (JOIN) them into a single string. First SQL returns this list –> All customers who do not Apr 22, 2021 · While solving all SQL problems from HackerRank, I came across multiple solutions for the same problem. Quote marks for making a This ensures that only requests coming from HackerRank’s servers make it through to your ORC instance. It is an easy SELECT T. Crack your coding interview and get hired. Thanks in advance . Visual Explanation: 58 SQL-Hackerrank challenge solutions for DB2, MySQL, Oracle, and MS SQL Server. operator_id, H. Problem. Discussions. Weather Observation Station 20. sevenzeni. ProductID WHERE Products. Subquery in SELECT clause: Include a subquery in the SELECT clause to retrieve a single value or set of values that can be used in the main query. Top Competitors. Abdur Rehman. Customer_id, C. My current query gives me the product wise purchase amount for the customer. Business_expansion. Share. You switched accounts on another tab or window. SELECT a. Plan and track work You need to abstract Goods and Services, using Table Inheritance. Each challenge offers a unique opportunity to sharpen your abilities and boo No Worries. Id = P. Contribute to KimTisott/HackerRank-Solutions development by creating an account on GitHub. SELECT H. Revising the Select Query 1. However it did work on MS SQL Server. It will be updated everyday. sql; oracle-database; Share . GIPHY. ProductName = 'Milk') AND NOT EXISTS ( SELECT 1 FROM Products WHERE CustomerId = C. 57 2 2 silver badges 4 4 bronze badges. Follow edited Apr 22, 2019 at 17:15. I want to expand it to return their sales for the additional years when they may or may not be in the top 50. The column "name" of the "salesman" table is given an alias of "Salesman". Average Sales Retail for all customers for the selected criteria time period. Saved searches Use saved searches to filter your results more quickly 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 - the string customer - the customer id - the customer name 2 For each product without an invoice return - the string product - the product id - the product name 4 The You signed in with another tab or window. These solutions can I am referring to this stackoverflow answer:. SELECT Products. 69% of tech leaders are preparing their teams for GenAI. You can use Single Table Inheritance if you prefer simplicity and performance over strictness. Oracle SQL specifically. challenge_id = c. I have taken HackerRank test on 22 July 2022. So here are 4 tables and their attributes: Customers: customerID, So here are 4 tables and their attributes: Customers: customerID, Before we begin, we need to ensure that Oracle Database Gateway for SQL Server is configured correctly. Marjana Sarker · Follow. SQL Server does not auto-generate an ID for each row in the table as Oracle does, so you have to go to the trouble of creating your own ID column and explicitly fetch it in your query. Get noticed by companies. Submissions. It is very important that you all first give it a try & brainstorm yourselves before having a look at the solutions. 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. 3 min read · Dec 2, 2021--Listen. You are viewing a single comment's thread. 1. Customer GROUP BY a. Follow edited Aug 10, 2017 at 22:17. Navigation Menu Toggle navigation. Please check 1. Customer_spending. They weren't the best, but they worked! :) SUBDOMAINS: Basic Select; Advanced Select; Aggregation; Basic Join; Advanced Join; Alternative Queries Saved searches Use saved searches to filter your results more quickly Apr 19, 2023 · List Customer And Product Without Sale In One List Return, All Customers Who Do Not Have An Invoice And All Products That Were Not Sold. customer_id, H. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 66%. - DaveSV/HackerRank-SQL-Intermediate-Certificate This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I faced during the test. These solutions can SQL (Intermediate) It includes complex joins, unions, and sub-queries. . It stipulates that these two figures must be the same. Dec 16, 2022 · HackerRank integrates with Oracle Recruiting Cloud for Tests and Interviews to facilitate an easy and seamless hiring experience. 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. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Query all columns for Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. · Product GitHub Copilot. When I run in on HackerRank's Learn who they are and how HackerRank helped transform their tech hiring. I tried to provide those with explanation. Follow edited Feb 21, 2014 at 22:12. [No product ordered by the customer may appear in the exclusion list. Solve Challenge. ---- Products Without Sales (solution_1) SELECT product. Name, COUNT(b. Learn who they are and how HackerRank helped transform their tech hiring. I. SQL*Plus commands have to be interpreted by the SQL Worksheet before being passed to the database. SELECT Date, Credit, Debit, LAG(Balance, 1, 0) OVER(ORDER BY Date) - Debit + Credit AS Balance, Description FROM sometable I'm trying to write a query that will list all the customers who have bought an item from EVERY single store in the state of Texas. Medium SQL (Intermediate) Max Score: 40 Success Rate: Users select their countries from a list I give to them, but the list is really huge so it would be great to have a SQL query that can avoid using that list, that is look in the DB and give back only those countries which are in the database, because for example I have nobody from Barbados, even if I have that option in the country select field of the signup form :) I noticed that solutions with [] didn't work with some database management systems in HackerRancks challenges, like MySQL, Oracle, and DB2. asked Feb 21, 2014 at 22:10. * FROM Customers C RIGHT OUTER JOIN @Temp T ON T. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; You should be able to use the LAG analytic function for this to look at the previous row's data. ProductID FROM Products JOIN Orders ON Products. sql sql-server hackerrank sql-query sqlserver This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. The tables I'm using are: Customers. CustomerId) AND (P. This does the same job as @MartinSmith did, but is supported by most SQL server versions. Instant dev environments Issues. Actions. Find and fix vulnerabilities Actions. Orders. sku, product. Reach out to your HackerRank contact or support@hackerrank. 8 years ago + 114 comments. Hi Rakesh, you seem new here. If there is more than one smallest or largest I'm trying to calculate the total purchase amount of each customer from the database available online on W3 Schools. Zero risk. The intersection of these are the customers who have bought products from you; join these tables to find out who they are. EDIT: for dynamic numbering of result set rows see below, but that would probably an equivalent for Oracle's ROWNUM and I assume from all the comments on the page that you [SQL] Using Oracle in HackerRank question, largest and smallest city name. Find and fix vulnerabilities Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. This repository contains all solutions and "thought process" to Hackerrank's SQL challenges. It showcases my growth, challenges faced, and solutions offered. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution · Customer Stories Partners Open Source GitHub Sponsors Solution for some HackerRank challenges by SQL Server. 1,838 2 2 gold badges 15 15 silver badges 21 21 Click here to see solutions for all Machine Learning Coursera Assignments. 2 IMAGE and TEXT Data Types (Binary Large Objects). 1. You signed in with another tab or window. : number of characters in the name). Click here to see more codes for Raspberry Pi 3 and similar Family. Stack Overflow. Customer_id is NULL then it is not an Id that exists in your Customer table. SELECT DISTINCT CITY FROM STATION WHERE CITY LIKE '[aeiou]%' AND CITY LIKE '%[aeiou]'; Verify your SQL Skills. Sep 25, 2023 Marco Russo & Alberto Ferrari Power Pivot, and SQL Server Analysis Services. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Basic Join. acarlstein. Find and fix In this article, we will learn how to calculate monthly sales using SQL queries to aggregate, count, and organize sales data. challenge_id inner join difficulty d Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Improve this answer. In addition to solutions, you'll also find a list of Useful Code Blocks and Valuable Resources in the root folder that you should take a look at it if you're looking for additional help. For example: AnActorName(A), · All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. hacker_id, h. 50%. 7k 6 6 gold badges 51 51 silver badges 65 65 bronze badges. Rakesh Bharadwaj Rakesh Bharadwaj. ID, a. 5 1 1 silver badge 4 4 bronze I have a query in SQL server that successfully returns the top 50 customers for a given year by sales. If you fail to clear the test, no harm done. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Apr 5, 2022 · HackerRank Interviews. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. 2. This arrangement allows multiple columns of IMAGE or I need an oracle sql query to get the list of customers who purchased more than one item. Take the HackerRank Certification Test and showcase your knowledge as a HackerRank verified developer. Key Features Send Test invites to candidates from ORC through your Candidate Selection Process Saved searches Use saved searches to filter your results more quickly Dec 12, 2023 · Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. Use The UNION Operator In This Query. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Product Without Sales. How do you report all sales per month? SELECT Sum(Price) As Total Sales FROM SALES Group By What Having What . Your scores will remain private and will not be shared with any company. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Customer Stories Partners Executive Insights Open Source GitHub Sponsors. 0. Marco and Alberto have worked with Analysis Services, Power BI and Power Pivot since the first 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 - the string customer - the This collection provides solutions to the HackerRank SQL Certification Test problems. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Query a list of CITY and STATE from the STATION table. Customer Spending. [In this example; they must have ordered exactly two different products. Please checkout my solutions and make use of it for the learning purpose Nov 5, 2020 · Query an alphabetically ordered list of all names in OCCUPATIONS, immediately followed by the first letter of each profession as a parenthetical (i. --abstract create table products ( id int primary key ); --a concrete product create table goods ( id int primary key references products(id), name varchar(255) ); --a concrete product create table services ( id int SQL. So, after reading some other materials and trying a few different things, I think I have a correct query. All Solutions are made in the MSSQL Syntax. txt at main · codehub001/Hacker-rank Jul 10, 2023 · Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. user3338753 user3338753. SELECT P. Skip to main content. I used both MySQL and Oracle SQL flavors in my answers that Mar 31, 2024 · Inside you will find the solutions to all HackerRank SQL Questions. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. name from submissions s inner join challenges c on s. : enclosed in parentheses). transaction_no, H. Products. quantity * products. price) DESC Next step is to find the employee Hackerrank’s “The Blunder” SQL problem. ##Question 2--> Customer Spending Oct 11, 2023 · Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Dec 20, 2024 · The said SQL query is selecting the name of the salesman, the customer's name, and the customer's city from the salesman and customer tables, and only displaying results where the city of the salesman matches the city of the customer. What I need is the total purchase amount. Top Earners | Easy | HackerRank We define an employee's total earnings to be their monthly salary × months worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. GitHub community articles Products Without Sales(solution Mar 29, 2024 · You signed in with another tab or window. You will be allowed to retake the test (if available) after a stipulated number of days. ] The second HAVING clause checks if any of those products has inclusive = 0. Binary Tree Nodes. Return to all comments → . We use cookies to ensure you have the best browsing experience on our website. If your API User Name and Password are compromised, this logic will block requests generated from servers outside HackerRank. Take the HackerRank Skills Test. The physical and logical storage methods for IMAGE and TEXT data differ from Oracle to Microsoft SQL Server. 3. Oct 18, 2017 · Let's say we have a Product table (product_id, product_name) and a Sales table (product_id, date, qty, amount). MS SQL Server code that worked for me. MySQL code. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Aug 27, 2024 · This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Aug 12, 2022 · Depending on the employer’s technical interviewing tool, candidates can choose from a range of relational database tools, including DB2, MySQL, Oracle, and MS SQL Server. Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. sql files for the solutions I submitted! ##Question 1--> Product Without Sales. Explore my GitHub repository to learn from my experiences and find inspiration for your SQL learning path. ] EDIT: Solutions for HackerRank challenges. Another requirement is that they have 'no outstanding orders'. ID = b. Considering your data model and requirements, you should try the below SQLs. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Prove your Skills. value), 0) total_value FROM Customers a LEFT JOIN Orders b ON a. sql files for the solutions I 39. sql & 2. Name To further gain more knowledge about joins, kindly visit the link below: Visual Representation of SQL Joins; Result, You can use window functions: select CustomerName, Amount, balance, total_SalesPrice from (select t. 34. Write better code with AI Security. SalesPrice) over (partition by CustomerName) as total_SalesPrice from t ) t where seqnum = 1; A technique I use to query the MOST RECENT rows in very large tables (100+ million or 1+ billion rows) is limiting the query to "reading" only the most recent "N" percentage of RECENT ROWS. HackerRank is a platform for competitive coding. Adapt your hiring strategy Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. Examples of Comparing Product Sales By Month . Sign in Product GitHub Copilot. Customers FROM Customers AS C , Product AS P WHERE (C. Customer_id This will then give you results whereby if the C. Contains solved Mar 31, 2024 · Inside you will find the solutions to all HackerRank SQL Questions. What sql query would return the monthly sales per product, and include products with no sales? (I'm using sql server if that makes any difference). Find and fix vulnerabilities Actions Customer Stories Partners Executive Insights Open Source GitHub Sponsors AmareshMuddebihal / HackerRank-SQL 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. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution . Fund open source developers The ReadME Project. Id AND ProductName = 'Bread' ) Share. This is under the Aggregate section and is classified as Easy. Covered in subquery practice exercises 10 Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Let us code and find answers to our given problems. - benkaan001/HackerRank-SQL Customer Stories Partners Open Source GitHub Sponsors This repository contains my solutions to various SQL challenges on HackerRank. You can then see if sales retail has decreased for a specific customer segment and for which customer segment it has remained consistent for the defined quarters. You can easily perform UNION with both the SQLs. com practice problems using Python 3, С++ and Oracle SQL - All Solutions in Hackerrank SQL Section. ProductID NOT IN ( SELECT Products. 0\tghome_1’. Topics Jul 22, 2022 · My journey of earning a SQL certification and tackling HackerRank SQL challenges. Automate any workflow Codespaces. e. The This repository is a home for elegant solutions to problems found on HackerRank, designed to help you improve with both domain problems and contests. Accelerate your Job Search. For this tutorial, the location is ‘C:\app\oracle\product\19. sql sql-server oracle hackerrank oracle-database hackerrank-sql Updated Feb 10, 2021; TSQL HackerRank SQL challenge questions that I used both MySQL and Oracle SQL to answer, and earned the Gold Badge for. sql; sql-server; oracle-database; Share. Tables: Products & Orders. ProductID Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Instant dev environments This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. Although the other answers work incidentally, the correct switch is actually -s which is short for --silent. You may want to additionally specify -r for --raw output, which disables character escaping as well, otherwise newline, tab, null char and backslash will be represented as \n, \t, \0 and \ respectively. I've seen the other answers on this page that use UNION and although this method technically works, it's not what I would like to use in my case. Hart CO. Write a query to find the maximum total earnings for all employees as well as the total number of employees who have maximum total In this post, we will be covering all the solutions to SQL on the HackerRank platform. Improve this question. *, row_number() over (partition by CustomerName order by (select null)) as seqnum, sum(t. Establish a skills Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. Once connected, you can view, create, modify, and delete the database objects using the Connection Navigator or issue any SQL or PL/SQL command using a SQL Worksheet (From the Tools menu, select SQL Worksheet). We will use the following sample table Do a little "thinking in sets" and that should help you on your way to building some queries. Click here to see more codes for NodeMCU ESP8266 and similar Family. While installing Oracle Database Gateway for SQL Server you will be configuring ORACLE_HOME, make note of ORACLE_HOME location. productid GROUP BY sales. · --silent, -s Silent mode. Over 3,000+ companies across multiple industries trust HackerRank. 7 Advanced SQL Interview Questions. Customer_id = C. Please check 1. SQL JOINS Exercise, Practice and Solution: Write a SQL statement to join the tables salesman, customer and orders so that the same column of each table appears once and only the relational rows are returned. Return 3 Values: - Category - Is This This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Subquery in SELECT clause: Include a 4 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 - the string customer - the customer id - the customername For each product without an invoice return - the string product - the product id - the productname The Solved queries for the Hacker-rank SQL (Intermediate) Skills Certification Test - Hacker-rank/Products Without Sales(solution-1,2). Could you guys please provide a better way to get the result . This is appears to be a query that can be solved with relational division and one way to achieve that is by utilizing nested NOT EXISTS queries. purchase_date FROM Sales_Transactions_Header H INNER JOIN (SELECT customer_id, MIN(purchase_date) As first_occurence FROM Sales_Transactions_Header GROUP BY customer_id) X ON Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Business Expansion. customerid ORDER BY SUM(sales. Clarification: I want a row for each possible month/product tuple. com and we will share our ORC Integration IPs with you. This is real world applications, for example I do this for non-historic Recent Weather Data, or recent News feed searches or Recent GPS location data point data. New Companies . This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Oct 18, 2017 · What sql query would return the monthly sales per product, and include products with no sales? (I'm using sql server if that makes any difference). It's generally considered good form This repository contains MYSQL solutions of HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test . Gmail YouTube Maps 1h 5 m left 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 ALL For each customer without an invoice return - the strins customer - the customer id - the customername 2 3 4 For each product without an invoice . 3,273 5 5 gold badges 33 33 silver badges 49 49 bronze badges. customerid FROM sales JOIN products ON sales. Please read our cookie policy for more information about how we use cookies. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. This repository contains solutions for Hacker Rank SQL problems. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Without Sales(solution-1,2). In Microsoft SQL Server, a pointer to the IMAGE or TEXT data is stored with the rows in the table while the IMAGE or TEXT data is stored separately. product_name FROM product WHERE product. 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 + This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions It checks how many inclusive products are in the Product list we're searching for. OrderDetails. Each solution includes a brief explanation of the problem and my approach to solving it. 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 Oct 11, 2023 · Saved searches Use saved searches to filter your results more quickly Sep 25, 2023 · This article analyzes the performance of different DAX techniques to identify any products without sales in an area or a time period. You have a set of customers and a set of sales. ProductID = Orders. asked Oct 31, 2013 at 5:24. Leaderboard. Download Sample Files. Ok | Prepare; Certify; Compete; Apply; Hiring developers? Log In; Sign Up; Prepare. Saved searches Use saved searches to filter your results more quickly About. Covered in subquery practice exercises 10, 11, 12, and 13. You signed out in another tab or window. Certificate can be viewed Here Saved searches Use saved searches to filter your results more quickly This BI shows a customer segment's sales trends by comparing Average Sales Retail per Segment vs. here I want to combine the first and last names in the new column, which is the full name so I'm using CONCAT. sql and 2. If you have a table with SALES {Customer_ID, Price, SmallDateTime date}. This will work on older version of SQL Server as well (you didn't specify version of SQL Server). Uncover more insights in the AI Skills Report. Id ,C. So I would like to stay with syntax that more or less looks like a comma-separated Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Customer) totalOrders, COALESCE(SUM(b. How could something similar be done in Oracle?. Read now. productid = products. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. Customer Spending. Skip to content. I've not used SQLfiddle much so I wasn't able to setup a test schema for this (yet). ubqzbiejfakzfthalzhpdnmfymenhiqlclheprbcawgpaqkrwqw