Sales data for all customers and products sql hackerrank solution oracle example. You signed in with another tab or window.

Sales data for all customers and products sql hackerrank solution oracle example 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 . 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. The tables I'm using are: Customers. Easy SQL (Advanced) Max Score: 25 Success Rate: 97. Learn more. Explore and run machine learning code with Kaggle Notebooks | Using data from Sales and Customer data. We use cookies to ensure you have the sql hackerrank hackerrank-solutions sql-history hackerrank-30dayschallange hackerrank-sql hackerrank-statistics hackerrank-sql-solutions hackerrank-solutions-github sql-hackerrank hackerrank-sql-challenge hackerrank-solution hackerrank-sql-solutions-oracle hackerrank-sql-certificate hackerrank-sql-solution hackerrank-sql-problems hackerrank-sql This solution has a runtime of 5853ms and it's faster than 5. SQL (Basic) SQL You may read our SQL Joins, SQL Left Join, SQL Right Join, tutorial before solving the following exercises. Output the first name of the customer. sql files for the solutions I submitted! sql hackerrank oracle-sql hackerrank-sql-solutions. ordNum FROM customers c -- Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. product_id = All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Medium. Solve Challenge. SELECT first_name from customers WHERE first_name not in (select first_name from customers join orders on customers. This repository contains solutions for Hacker Rank SQL problems. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Your three queries are different semantically, as written with the provided table definitions. SELECT TOP(2) PRO. 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. Crack your coding interview and get hired. customer_id and i. Key Dive into SQL mastery with our Data Analyst Explorers series! 📊 In this video, we dissect HackerRank's SQL challenge, offering a step-by-step solution to bo You signed in with another tab or window. Please check 1. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Customer Stories Partners Executive Insights Open Source GitHub Sponsors hackerrank solutions github | hackerrank all solutions | hackerrank solutions for java | hackerrank video tutorial | hackerrank cracking the coding interview solutions | hackerrank data structures | hackerrank solutions algorithms | hackerrank challenge | hackerrank sql hackerrank hackerrank-solutions sql-history hackerrank-30dayschallange hackerrank-sql hackerrank-statistics hackerrank-sql-solutions hackerrank-solutions-github sql-hackerrank hackerrank-sql-challenge hackerrank-solution hackerrank-sql-solutions-oracle hackerrank-sql-certificate hackerrank-sql-solution hackerrank-sql-problems hackerrank-sql 170+ solutions to Hackerrank. As part of the business expansion efforts at a company, your help is 1. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution The problem with this query is that it would not return the fourth row in my example data above, since we didn't have any sales in 2008, but we actually did in 2007. Business Expansion: Write a query to find all pairs of customers and agents who have been in contact more than once. I will try my best to A desktop application that uses Envato API to get sales data for Envato market Authors. From the following tables write a SQL query to find the salesperson and customer who reside in the same city. Nerves can peak during the programming test, and even experienced developers might blank SELECT category, CASE WHEN category = 'customer' THEN c. Customer Stories Partners Executive Insights Open Source There is a tale with daily weather data over the last 6 months of 2020, including the maximum, minimum, and average Hacker rank SQL intermediate solution. ); This is where it was discovered that unlike 2003 and 2004 that made sales in all 12 months of the year, sales data for 2005 was only captured for the first 5 months of the year. The company operates worldwide to fill orders for products. In View all solutions Resources This project aims teaching the basics of creating and querying data from the sales database. Fund open source developers The ReadME Project. Learning Pathways White papers, Ebooks, Webinars certificate-intermediate-hackerrank. Skills. inner join In this project, I utilized MySQL Workbench to analyze extensive sales data from a supermarket. To get only the customers with order, use an INNER JOIN. You’ll apply SQL skills like joins, subqueries, and CTEs to explore product, order, and customer data. Each solution is crafted to address a specific SQL problem from the HackerRank SQL challenge set, covering various aspects of SQL including querying, joins, aggregations, and more. For example, the OKC_PRICING_TERMS table stores information about the pricing terms for parent entities such as Sales Agreements, Promotions or Discount Lists. This means that every row in the left table will be returned whether it has a match on the right table or not. A stock is considered profitable if the predicted price is strictly greater than the current price. SQL Solutions: Provides solutions to SQL challenges, focusing on query writing, database management, and optimization. HackerRank integrates with Oracle Recruiting Cloud for Tests and Interviews to facilitate an easy and seamless hiring experience. Basic Select. FRIEND_ID Hello coders, today we are going to solve Draw The Triangle 1 HackerRank Solution in SQL. customer_name, a. Status. x), the exchange rate (e. Feel free to ask doubts in the comment section. This repository contains MYSQL solutions of HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test . Topics I'm trying to calculate the total purchase amount of each customer from the database available online on W3 Schools. 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. - GitHub - kg-0805/HackerRank-Solutions: This Repository contains all the The Sales Manager wanted a dashboard overview of internet sales that would give details on sales and the products customers liked most. Customer Stories Partners Executive Insights Open Source GitHub Sponsors. Basic Join. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving your skills. - JawadSher/SQL-Problems-Solutions-HackerRank CodeRankGPT helps you solve HackerRank coding problems during your coding interview. Print " N / A " for a null customer or product name, and 0 for a Inside you will find the solutions to all HackerRank SQL Questions. Reload to refresh your session. customer_id. inner join invoice on customer. Business_expansion. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution I have data like below customer_id city timestamp amount 123 hyderbad currentdate 130 123 hyderbad currentdate 200 200 bangalore currentdate 300 300 bangalore currentdate 400 Customer_id can be multiple times I have written the following code for top 10 sales based on customer_id as below. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. - Ishika63/HackerRank-SQL-Intermediate-Solution Developed ETL mappings using SQL to extract the data from unstructured data and transformed it to the staging area to conduct data cleaning and design star schema data model on Tableau. ; Advanced: Expert-level problems and more complex queries. Company Size. You signed out in another tab or window. The company had over 90 customers across all regions and from a business perspective, it is Invoice ===== InvoiceID CustomerID InvoiceDate TransactionDate InvoiceTotal Customer ===== CustomerID CustomerName What I want is a listing of all invoices where there is more than one per customer. Easy. id=customer. Unsolved. Easy Navigation: Organized by Welcome to the HackerRank SQL Problems repository! This collection features a variety of SQL challenges from HackerRank, designed to help you sharpen your SQL skills. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Whether you're a beginner or an experienced developer, you'll find solutions and explanations for everything from basic queries to advanced data manipulation. ID, a. 9–Oct 3, 2024 among a random sample of U. quantity FROM (SELECT customer. Furthermore, fill the SQL Server name where your database resides in Server name field. ID = b. Industry. Go to the editor] . WITH CTE AS( SELECT DISTINCT CO. ^ These offers are provided at no cost to subscribers of Chegg Study and Chegg Study Pack. I also used Hackerrank to practice the queries i learned. Their primary keys are stock_code. Subdomains. The page is a good start for people to solve these problems as the time constraints are rather forgiving. Click here to see more codes for Raspberry Pi 3 and similar Family. Data Two tables: Customers and Orders. Orders. product_name, a. You signed in with another tab or window. AI DevOps Security Software Development HackerRank-SQL(certification)-Product-Sales-Per-City. 24–Oct 12, 2023 among a random sample of U. Enhancing University Recruiting: Juniper’s Success Story with HackerRank Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Survey respondents were entered into a drawing to win 1 of 10 $300 e-gift cards. id WHEN category = 'product' THEN p. productid FROM product p LEFT JOIN orderline o ON Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. These solutions can HackerRank Beginner and Intermediate SQL Certification Solutions - Vaneeza-7/HackerRank-SQL-Certification-Solutions. Sales Data for All Customers and ProductsWrite a query that will return sales details of all customers and products. 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. CREATE TABLE production. invoice_id and ii. NAME, o. Code The solutions of all SQL hackerrank challenges using MySQL . HackerRank SQL Solutions. Query Optimization: Optimize your queries for better performance. About this sample. id = i. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Tutorial Creating an Analytic View for the Sales History (SH) Sample Schema; Description This tutorial will create an analytic view and supporting objects using data in the Sales History (SH) sample schema. ID = F. There are almost always multiple solutions to the same problem. sql files for the solutions I Question: Sales Data for All Customers and ProductsWrite a query that will return sales details of all customers and products. Draw The Triangle 2. Amazon’s Second Earliest Bid Solution: To solve this Amazon SQL interview question, our goal is to identify the second bid placed by each customer on any day they make at least two bids. Personal HackerRank Profile View Profile This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Contents. country_name, count(*), AVG(i. The query should return all customersmer id, product id and invoice item id. country_name,CI. I learned SQL under Udacity Introduction to Data Science nanodegree program. Hard. Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Order your output in descending order by the total number of challenges in which the hacker earned a full score. PRONAME, SUM(OD. Your solution’s ready to go! HackerRank MySQL challenge solution in the MySQL Advance Track - GitHub - hammad-ali-shah/SQL: HackerRank MySQL challenge solution in the MySQL Advance Track. For Example: The output should be in the following format: Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. mysql. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Without Sales(solution-1,2). total_price) FROM country co, city ci, customer cu, invoice i WHERE co. SQL-Business-Expansion and 2. - MayankOps/HackerRank-SQL-Certification-Test-Solutions Solution – Select All in SQL SELECT * FROM CITY; Disclaimer: The above Problem is generated by Hacker Rank but the Solution is provided by CodingBroz. [An editor is available at the bottom of the page to write and execute the scripts. Take “order Sample Solution-1: SQL Code(MySQL): CREATE TABLE item (item_code int not null unique, item_desc varchar(255), cost int); INSERT INTO item VALUES(101,'mother board', 2700); INSERT INTO item VALUES(102,'RAM', 800); INSERT INTO item VALUES(103,'key board',300); INSERT INTO item VALUES(104,'mouse',300); CREATE TABLE sales_info About. But this is not recommended for production enviornments. Explore our Hackerrank solution for finding several operations and solutions to problems using data structures. line_total_price), 2) as tot from city ci, customer cu, invoice i, invoice_item ii, product pr where ci. Role. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. P(R) represents a pattern drawn by Julia in R rows. 50%. sql and 2. city_id. city_name ) SELECT Hakerrank SQL Intermediate Certification Solutions Invoices Per Country SELECT co. id = cu. id=orders. id AS invoice_item_id, select ci. Thousands of customers across various industries trust HackerRank for tech recruiting. JOIN PACKAGES P2 ON F. sample data in lines I tried the scripts in several Oracle Database environments, in 19c Oracle Database, in Oracle Database 23ai Free and in the latest 23ai Oracle Base Database Service. This confirm the reason behind the low sales rate in that year. No cash value. Geography. Ask Question Asked 3 years, 11 months ago. id = p. e. FROM sales_amount s: The sales_amount table is aliased as s. inner join customer on city. The second query uses a redundant select distinct. Please visit each partner activation page for complete details. By detailing sales figures per city and identifying customers who spent 25% or less than I have the following SQL statement that shows the total sales amount for customers in cities who have done at least 2 orders. This query joins the Sales and Products tables on the product_id column, groups the results by product name, calculates the total sales revenue for each product, and ranks products based on total sales revenue using the I have tried to provide the complete solution with possible explanation to all SQL Practice problem on HackerRank. id GROUP BY CO. It That is the old-style JOIN syntax, wherein (+) denotes an OUTER JOIN. Name, COUNT(b. 📜 License. This project is open-source and available under the MIT License. id = c. Customer Demographics: The dataset includes customers from various age groups, with sales distributed across different categories such as Clothing, Electronics and Beauty. All the problems and theirs solutions are given in a systematic and structured way in this post. After your test cases get passed!!!! Happy Learning!!!! Add this topic to your repo To associate your repository with the hackerrank-sql-solutions topic, visit your repo's landing page and select "manage topics. Customer Table. Business Expansion. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. The query should. S. Read more . Vendor Table. There are two tables in the database: price_todayand price_tomorrow. It offers a quick overview of the process of creating an analytic view. The test consists of two tasks that involve querying a database using SQL. I don't want to group or count the invoices, I actually need to see all invoices. Customer Stories Partners Executive Insights Open Source - DB2, MySQL, Oracle, MS SQL Server */ Select S. Terms and Conditions apply. Write a query that will return sales details of all customers and products. id AS product_id, invoice_item. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Customer Stories Partners Executive Insights Open Source Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Viewed 2k times 0 . ID, c. This is the only video you will need to improve you Customer segmentation is an enterprise-specific solution that uses data mining to group customers based on customer attributes and customer transactions. The output would look something like this: Why this video is 7. The repository is organized as follows: Easy: Beginner-level SQL challenges. These are not the only solutions. My current query gives me the Products OverflowAI; Hackerrank SQL problem to solve in Oracle's SQL version. The dataset has 1000 rows with the following fields (columns): first_name: The first name of the customer; last_name: The last name of the customer; email: The email address of the customer; phone: The phone number of the customer; address: The physical address of the customer; gender: The gender identity of the customer (male, female, etc. customer_name WHEN category = 'product' THEN p. product_name END AS 'name' FROM ( SELECT CASE WHEN c. I've executed a SELECT statement to retrieve number of products sold in each orders but I don't know How I can retrieve only TOP 10 orders. Topics SQL Server Data Source Configuration Window; Creating a data source. File metadata and controls ,round(invoice_item. Reason: Grouping and aggregating data are necessary for summarizing data and performing aggregate calculations. id AS customer_id, product. customers 39. ; Data Modeling: Design efficient and effective database structures. HackerRank SQL Solutions 20 July 2020 List the top 1 customer's transactions who have the highest total transaction amount in such a way that the result shows all the transaction done by the customer and the last row shows the total amount of all the transaction done by the customer. This document walks through different use cases supported by the HackerRank—Oracle Recruiting Cloud (ORC) Integration and covers FAQs. SELECT p. In addition in my test lab environment I disabled the password complexity to keep very simple and easy passwords. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. I am guessing that all decent databases would You signed in with another tab or window. The retailer can use this information to describe and predict customer behavior. Additionally, you should use explicit JOIN and not the old-style syntax:. Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. ORDERQUANTITY) SALEQTY FROM PRODUCTS AS PRO INNER JOIN DBO. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) For example, the output for all prime numbers ≤ 10 would be : 2&3&5&7. Skip to content. customer_id GROUP BY co. sql & 2. total_price) > (SELECT AVG(total price)) If you refer to the database provided by Kaggle, there are 7 to 8 separate datasets that represents an e-commerce sales report: order, customer, order_items, payment, delivery, etc. Individual results may vary. We use cookies to ensure you have the best browsing experience on our website. SQL (Intermediate) SQL (Advanced) Difficulty. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. Feel free to use, share, and improve upon it! 🚀 Level up your SQL skills with these HackerRank challenges and become a coding master! 🚀 Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Kaggle uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. ; Indexing: Explore the Customer Stories Partners sql oracle hackerrank plsql hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hackerrank-sql-solutions-oracle. #Solution 1: The empty cell data for columns with less than the maximum number of names per 1. clear all; HackerRank + Daugherty . Blog; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. SQL-Product-Sales-per-City files for the solutions I submitted! Key competencies: Complex joins-This your help is needed to find all pairs of customers and cracking-the-coding-interview algorithm-challenges coding-challenges hackerrank-solutions hackerrank-java hackerrank-algorithms-solutions algorithms-and-data-structures 30-days-of-code hackerrank-challenges data-structures-and-algorithms hackerrank-implementation hackerrank-problem-solutions hackerrank-ctci hackerrank-practice hackerrank This tutorial provides you with a SQL Server Sample Database called BikeStores, which allows you to start practicing with SQL Server quickly and effectively. country name HAVING AVG(i. JOIN FRIENDS F ON S. Respondent base (n=611) among approximately 837K invites. products that were not sold. Grouping and Aggregating Data. This table contains You signed in with another tab or window. cust_id) About. For example, remotemachine(or)ipaddress,1433 where, 1433 is the port number. Solution. Firstly, name the data source as ContosoBIDataSource at Name field in the NEW DATA SOURCE window. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Contains solved Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. ; Sales Trends: Monthly analysis shows variations in sales, helping identify peak This repository contains the solutions to the HackerRank SQL (Intermediate) Skills Certification Test. Give a star For my work. Navigation Menu Customer Stories Partners Executive Insights Open Source GitHub Sponsors HackerRank-Solutions / SQL / 4_Basic Join / 05_Top Competitors / Top Competitors. 1. Annotated Code: Each solution is well-commented and explained to aid understanding and learning. Write a query that gives month, monthly maximum, monthly minimum, monthly average temperatures Take your SQL expertise to the next level with advanced topics. Solved. The objective was to gain insights into various aspects of the sales, including revenue generation, top-selling branches, customer segmentation, popular Learn who they are and how HackerRank helped transform their tech hiring. Sort the output in ascending order. The LEFT JOIN keyword returns all records from the left table (Sales), and the matched records from the right table (Product). I tried below query and it worked for me. The query shouldreturn all customers, even customers without invoices and also all products, even thoseproducts that were not sold. JOIN PACKAGES P1 ON S. Regular practice helps you get better at using SQL and boosts your confidence in handling different database tasks. The Oracle Database sample schemas are based on a fictitious sample company that sells goods through various channels. Table of Contents. View all solutions Resources Topics. Surprisingly it does seem to understand PL/SQL; and even more surprisingly it handles the set serveroutput on, which is a SQL\Plus/SQL Developer client command. 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. Customer Spending. File metadata and controls. This article talks about performing relational division in SQL in great detail and helped to clear things up a lot for me, Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Covered in subquery practice exercises 10 There is a table with daily weather data over the last 6 months of 2020, including the maximum, minimum, and average temperatures. ^ Chegg survey fielded between Sept. ORG, c. PROID = OD. Tags analytic view, SH, sales history; Area SQL General; Contributor William Endress (Oracle) Inside you will find the solutions to all HackerRank SQL Questions. Thanks. SELECT a. Easy SQL (Advanced) Max Score: 25 Success Rate: 96. SELECT c. The subquery selects the sales_date (s. city_name,COUNT(city_id) AS cnt , AVG(COUNT(city_id)) OVER() avg_cnt FROM COUNTRY CO INNER JOIN City CI ON CI. There So, after reading some other materials and trying a few different things, I think I have a correct query. You switched accounts on another tab or window. PROID GROUP BY A stock is considered profitable if the predicted price is strictly greater than the current price. Top. Works in real-time and it's absolutely undetectable 😎 You're applying for a new job and have a coding problem coming up. line_total_price,2) from city. . FROM STUDENTS S . This is too long for a comment. city_id and cu. ; High-Value Transactions: Several transactions had a total sale amount greater than 1000, indicating premium purchases. #009 - Master SQL for Data Engineering & Testing | HackerRank 🔥Solutions Explained | SQL Cheatcode #sql Unlock the secrets of SQL with our comprehensive ser Problem. ; Medium: Intermediate-level SQL challenges. This repository contains all 58 solutions to the HackerRank SQL Practice Questions. ORDERDETAILS AS OD ON PRO. country_id = CO. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Products without sales: Business Expansion: Write a query to find all pairs of customers and agents who have 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. SELECT codigo_orden AS ORDER_ID, COUNT(codigo_producto) My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. This tutorial is only for Educational and Learning Purpose. 'name' is unique column name in 'Hackers' table; 'sum(score)': the 'score' here is actually the alias given by 'max(score)' in the subquery. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) This repository consists of solutions to HackerRank practice, tutorials, and interview preparation problems with Python, SQL, C++, and Java. Key Features This's my database sample: orderdetails table with the ProID relate to products tabale the Tested ms sql Query to Find Faster Selling product from above table. Modified 11 months ago. Name To further gain more knowledge about joins, kindly visit the link below: Visual Representation of SQL Joins; Result, Click here to see solutions for all Machine Learning Coursera Assignments. 2. This is probably a common query/problem, but my SQL is rusty after doing front-end development for so long. Aggregation. Customer GROUP BY a. Despite being over four decades old, SQL is still evolving at a rapid pace. Unless quantity is declared as NOT NULL, then it can return matching records where the quantity is NULL. id THEN 'product' END as 'category' FROM customer as Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. About this sample Create database Create tables Manipulating database Querying and exploring the database Subquery. Activities involved: Using GROUP BY and HAVING clauses to group and filter aggregated data. That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions #001 - Master SQL for Data Engineering & Testing | HackerRank 🔥Solutions Explained | SQL Cheatcode #sql Unlock the secrets of SQL with our comprehensive ser Over the course of the next few (actually many) days, I will be posting the solutions to previous Hacker Rank challenges. But let say I only want to show the the city/cities where someone has done at least 2 orders, and that there are two customers living in this city/cities, so what I want to do is to pick out the city/cities where a customer has made at least 2 orders, but then show the Question Find customers who have never made an order. country_id AND ci. Developed a Tableau dashboard to perform analysis, producing quantitative visualizations in Tableau to draw Overview. Source Code 2 In this solution, we use a LEFT JOIN to combine rows from Sales and Product where the product_id matches. Like Practice questions of C | C++ | JAVA | PYTHON | SQL and many more stuff. id = ci. Contribute to ejaj/SQL development by creating an account on GitHub. OK, Got it. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution All Solutions are made in the MSSQL Syntax. Indexes This collection provides solutions to the HackerRank SQL Certification Test problems. ID. ID = P1. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview is critical to landing your next role. 4% of all SQL online submissions for this problem. You’ll use SQL to analyze a sales database and answer key questions to guide business strategy. city_name, pr. Updated Mar 8, 2020; Aman9026 / HackerRank. id = ii. id INNER JOIN Customer CU ON CU. Click here to see more codes for NodeMCU ESP8266 and similar Family. If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. Products. Problem; Solution – Draw The Triangle 1 in SQL. value), 0) total_value FROM Customers a LEFT JOIN Orders b ON a. Enhance your DSA skills with our step-by-step explanation and code. We use cookies to ensure you Oracle Database Sample Schemas 23c are compatible with Oracle Database 19c and upwards, including Oracle Database Cloud Services and contain several improvements. city_id = CI. country_name, Ci. Advanced Select. The first query is different from the other two, logically. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Updated This repository contains solutions to all the This collection provides solutions to the HackerRank SQL Certification Test problems. Prior to data processing, we need to identify the relationship of all datasets with one another to avoid mis-mapping that may result in data loss. Tables are the basic unit of data storage in Oracle Sales and Fusion Service, where data is stored in rows and columns. Alternative Queries. exchange_rate) and calculates a row number for each row. 99%. ; Hard: Advanced-level SQL challenges. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. This database sample is composed of 6 tables. mysql sales sql data-visualization mysql-database dashboards data-analysis tableau powerbi dashboard-templates tableau-desktop sales-dashboard This project analyzes customer segmentation and behavior using data science and cohort analysis. Write a query to find the stock_codes of all the stocks which are profitable based on this definition. GitHub community articles Repositories. The following pattern represents P(5): * Generate the contest leaderboard. city_id AND cu. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Please check 1. Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. I have used MySQL and MS SQL Server for the solutions. While solving all SQL problems from HackerRank, I came across multiple solutions for the same Products without sales: Write a query to find all the products that were not sold, ordering the results by SKU ascending. Each solution includes a brief explanation of the problem and my approach to solving it. Any help is greatly appreciated! You signed in with another tab or window. AI DevOps Security Software Development View all Explore. product_name, ROUND(sum(ii. In this project, you’ll take on the role of a data analyst at a scale model car company looking to make data-driven decisions. customers who used Chegg Study or Chegg Study Pack in Q2 2023 and Q3 2023. 02%. SELECT a. customers who used Chegg Study or Chegg Study Pack in Q2 2024 and Q3 2024. To succeed in an SQL Python Solutions: Includes solutions to Python coding challenges, covering topics like data structures, algorithms, and more. OrderDetails. Customer_spending. Advanced Join. Write a query to find the maximum total earnings for all employees as well as the total number of employees who have maximum total SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. She also wanted to compare sales over time against budget to You signed in with another tab or window. But you need to add a terminating / after your code, on a line on its own - SQL interview questions have been a critical component of technical hiring for decades. Topics Here you will be able to find my HackerRank solutions to many challenghes, using C++, JavaScript, Python and SQL Correlated Materials Visit my Competitive programming guide and see also my HackerRank, GeeksForGeeks, Leetcode and other online judges solutions This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. : number of characters in the name). NAME. id END AS 'id', CASE WHEN category = 'customer' THEN c. Example Task: Write a query that groups data by a specific column and calculates the sum for each group. MySQL; Problem. Covered in subquery practice exercises 10, 11, 12, and 13. products ( product_id INT IDENTITY (1, 1) PRIMARY KEY Code language: SQL (Structured Query Language) (sql) Table sales. ; This Repository contains all the solutions of HackerRank various tracks. Customer) totalOrders, COALESCE(SUM(b. " Learn more You signed in with another tab or window. id THEN 'customer' WHEN p. id=invoice. Star 12. - SQL-HackerRank-Solutions/1. ros bxvu oxpirt hzhsp wnwsxj cgscv vsy uoxhe bbjyft zmyp