Sales data for all customers and products sql hackerrank solution oracle example. Easy SQL (Advanced) Max Score: 25 Success Rate: 96.

Sales data for all customers and products sql hackerrank solution oracle example id AS product_id, invoice_item. 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. ; Data Modeling: Design efficient and effective database structures. SQL Solutions: Provides solutions to SQL challenges, focusing on query writing, database management, and optimization. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Write a query that will return sales details of all customers and 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. 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. The repository is organized as follows: Easy: Beginner-level SQL challenges. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Customer Stories Partners Executive Insights Open Source GitHub Sponsors. 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. city_name,COUNT(city_id) AS cnt , AVG(COUNT(city_id)) OVER() avg_cnt FROM COUNTRY CO INNER JOIN City CI ON CI. 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. 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. It That is the old-style JOIN syntax, wherein (+) denotes an OUTER JOIN. #009 - Master SQL for Data Engineering & Testing | HackerRank 🔥Solutions Explained | SQL Cheatcode #sql Unlock the secrets of SQL with our comprehensive ser Problem. Code The solutions of all SQL hackerrank challenges using MySQL . For Example: The output should be in the following format: Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution All Solutions are made in the MSSQL Syntax. This project is open-source and available under the MIT License. I don't want to group or count the invoices, I actually need to see all invoices. Feel free to ask doubts in the comment section. Sales Data for All Customers and ProductsWrite a query that will return sales details of all customers and products. ; Hard: Advanced-level SQL challenges. 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. Products. Unsolved. This repository contains all 58 solutions to the HackerRank SQL Practice Questions. That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. id = p. Despite being over four decades old, SQL is still evolving at a rapid pace. Subdomains. 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. e. This tutorial is only for Educational and Learning Purpose. 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. 24–Oct 12, 2023 among a random sample of U. About this sample Create database Create tables Manipulating database Querying and exploring the database Subquery. Medium. From the following tables write a SQL query to find the salesperson and customer who reside in the same city. Source Code 2 In this solution, we use a LEFT JOIN to combine rows from Sales and Product where the product_id matches. Crack your coding interview and get hired. 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. Company Size. Blog; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Business Expansion: Write a query to find all pairs of customers and agents who have been in contact more than once. 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. 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. In View all solutions Resources This project aims teaching the basics of creating and querying data from the sales database. 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 . A stock is considered profitable if the predicted price is strictly greater than the current price. ID, a. Reload to refresh your session. Order your output in descending order by the total number of challenges in which the hacker earned a full score. city_name, pr. We use cookies to ensure you have the best browsing experience on our website. inner join In this project, I utilized MySQL Workbench to analyze extensive sales data from a supermarket. 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. customer_id GROUP BY co. ORDERDETAILS AS OD ON PRO. Sort the output in ascending order. The subquery selects the sales_date (s. The tables I'm using are: Customers. 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. This is probably a common query/problem, but my SQL is rusty after doing front-end development for so long. But this is not recommended for production enviornments. 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. . Go to the editor] . It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Output the first name of the customer. 99%. SELECT TOP(2) PRO. country_name, count(*), AVG(i. Updated This repository contains solutions to all the This collection provides solutions to the HackerRank SQL Certification Test problems. Additionally, you should use explicit JOIN and not the old-style syntax:. I also used Hackerrank to practice the queries i learned. Skip to content. ; Medium: Intermediate-level SQL challenges. The query should. Customer GROUP BY a. ; Indexing: Explore the Customer Stories Partners sql oracle hackerrank plsql hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hackerrank-sql-solutions-oracle. Firstly, name the data source as ContosoBIDataSource at Name field in the NEW DATA SOURCE window. SELECT codigo_orden AS ORDER_ID, COUNT(codigo_producto) My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. Unless quantity is declared as NOT NULL, then it can return matching records where the quantity is NULL. 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. WITH CTE AS( SELECT DISTINCT CO. I have used MySQL and MS SQL Server for the solutions. 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. city_id AND cu. PROID GROUP BY A stock is considered profitable if the predicted price is strictly greater than the current price. It offers a quick overview of the process of creating an analytic view. Any help is greatly appreciated! You signed in with another tab or window. You’ll use SQL to analyze a sales database and answer key questions to guide business strategy. 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. - 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. inner join customer on city. 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. - 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. Draw The Triangle 2. Explore and run machine learning code with Kaggle Notebooks | Using data from Sales and Customer data. id=customer. 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. Tables are the basic unit of data storage in Oracle Sales and Fusion Service, where data is stored in rows and columns. clear all; HackerRank + Daugherty . Easy SQL (Advanced) Max Score: 25 Success Rate: 97. customer_id and i. Industry. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Their primary keys are stock_code. ORDERQUANTITY) SALEQTY FROM PRODUCTS AS PRO INNER JOIN DBO. To succeed in an SQL Python Solutions: Includes solutions to Python coding challenges, covering topics like data structures, algorithms, and more. Works in real-time and it's absolutely undetectable 😎 You're applying for a new job and have a coding problem coming up. The query shouldreturn all customers, even customers without invoices and also all products, even thoseproducts that were not sold. SQL (Intermediate) SQL (Advanced) Difficulty. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Solve Challenge. - JawadSher/SQL-Problems-Solutions-HackerRank CodeRankGPT helps you solve HackerRank coding problems during your coding interview. ; High-Value Transactions: Several transactions had a total sale amount greater than 1000, indicating premium purchases. NAME, o. Survey respondents were entered into a drawing to win 1 of 10 $300 e-gift cards. AI DevOps Security Software Development HackerRank-SQL(certification)-Product-Sales-Per-City. This repository contains MYSQL solutions of HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test . Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. id = ci. The following pattern represents P(5): * Generate the contest leaderboard. city_id. SELECT a. city_id = CI. 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. 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. For example, the OKC_PRICING_TERMS table stores information about the pricing terms for parent entities such as Sales Agreements, Promotions or Discount Lists. customer_name WHEN category = 'product' THEN p. Advanced Join. Respondent base (n=611) among approximately 837K invites. The first query is different from the other two, logically. CREATE TABLE production. Give a star For my work. id AS customer_id, product. ID = P1. x), the exchange rate (e. - 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. The LEFT JOIN keyword returns all records from the left table (Sales), and the matched records from the right table (Product). Terms and Conditions apply. id = ii. The company operates worldwide to fill orders for products. FROM STUDENTS S . Tags analytic view, SH, sales history; Area SQL General; Contributor William Endress (Oracle) Inside you will find the solutions to all HackerRank SQL Questions. You signed out in another tab or window. Advanced Select. ID = b. ^ Chegg survey fielded between Sept. line_total_price), 2) as tot from city ci, customer cu, invoice i, invoice_item ii, product pr where ci. Topics I'm trying to calculate the total purchase amount of each customer from the database available online on W3 Schools. She also wanted to compare sales over time against budget to You signed in with another tab or window. Customer Stories Partners Executive Insights Open Source - DB2, MySQL, Oracle, MS SQL Server */ Select S. Each solution includes a brief explanation of the problem and my approach to solving it. JOIN PACKAGES P2 ON F. The page is a good start for people to solve these problems as the time constraints are rather forgiving. - 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. city_id and cu. PROID = OD. inner join invoice on customer. customers who used Chegg Study or Chegg Study Pack in Q2 2024 and Q3 2024. 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. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. ^ These offers are provided at no cost to subscribers of Chegg Study and Chegg Study Pack. Annotated Code: Each solution is well-commented and explained to aid understanding and learning. 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. Covered in subquery practice exercises 10, 11, 12, and 13. Query Optimization: Optimize your queries for better performance. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving your skills. ; This Repository contains all the solutions of HackerRank various tracks. File metadata and controls. About this sample. Contribute to ejaj/SQL development by creating an account on GitHub. 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. Geography. 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. customer_id. S. Write a query that gives month, monthly maximum, monthly minimum, monthly average temperatures Take your SQL expertise to the next level with advanced topics. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. Please check 1. Contents. Click here to see more codes for Raspberry Pi 3 and similar Family. 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. cust_id) About. Please check 1. 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. Solved. Click here to see more codes for NodeMCU ESP8266 and similar Family. This document walks through different use cases supported by the HackerRank—Oracle Recruiting Cloud (ORC) Integration and covers FAQs. This table contains You signed in with another tab or window. customers who used Chegg Study or Chegg Study Pack in Q2 2023 and Q3 2023. products that were not sold. Nerves can peak during the programming test, and even experienced developers might blank SELECT category, CASE WHEN category = 'customer' THEN c. Write a query to find the stock_codes of all the stocks which are profitable based on this definition. HackerRank integrates with Oracle Recruiting Cloud for Tests and Interviews to facilitate an easy and seamless hiring experience. For example, remotemachine(or)ipaddress,1433 where, 1433 is the port number. I learned SQL under Udacity Introduction to Data Science nanodegree program. View all solutions Resources Topics. Skills. 50%. product_name END AS 'name' FROM ( SELECT CASE WHEN c. 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. SQL (Basic) SQL You may read our SQL Joins, SQL Left Join, SQL Right Join, tutorial before solving the following exercises. productid FROM product p LEFT JOIN orderline o ON Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Easy. - 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. sql and 2. I tried below query and it worked for me. 📜 License. value), 0) total_value FROM Customers a LEFT JOIN Orders b ON a. Problem; Solution – Draw The Triangle 1 in SQL. - 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. 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. id=invoice. Grouping and Aggregating Data. This means that every row in the left table will be returned whether it has a match on the right table or not. Whether you're a beginner or an experienced developer, you'll find solutions and explanations for everything from basic queries to advanced data manipulation. Basic Join. Regular practice helps you get better at using SQL and boosts your confidence in handling different database tasks. Business_expansion. Status. line_total_price,2) from city. ; Advanced: Expert-level problems and more complex queries. AI DevOps Security Software Development View all Explore. Contains solved Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Star 12. Thanks. P(R) represents a pattern drawn by Julia in R rows. ordNum FROM customers c -- Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. 2. country_id AND ci. country_id = CO. id THEN 'customer' WHEN p. SELECT a. These solutions can HackerRank Beginner and Intermediate SQL Certification Solutions - Vaneeza-7/HackerRank-SQL-Certification-Solutions. Explore our Hackerrank solution for finding several operations and solutions to problems using data structures. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Enhance your DSA skills with our step-by-step explanation and code. 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. Read more . 1. Vendor Table. Activities involved: Using GROUP BY and HAVING clauses to group and filter aggregated data. Individual results may vary. Top. ID. Business Expansion. This confirm the reason behind the low sales rate in that year. 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. sql & 2. 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. Learn more. : number of characters in the name). JOIN FRIENDS F ON S. OK, Got it. id GROUP BY CO. Customer_spending. 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. There are almost always multiple solutions to the same problem. Updated Mar 8, 2020; Aman9026 / HackerRank. Customer Table. Modified 11 months ago. id AS invoice_item_id, select ci. id = i. Please visit each partner activation page for complete details. Personal HackerRank Profile View Profile This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. customers 39. id END AS 'id', CASE WHEN category = 'customer' THEN c. Easy SQL (Advanced) Max Score: 25 Success Rate: 96. SELECT p. Thousands of customers across various industries trust HackerRank for tech recruiting. Topics SQL Server Data Source Configuration Window; Creating a data source. Name, COUNT(b. #Solution 1: The empty cell data for columns with less than the maximum number of names per 1. Role. Fund open source developers The ReadME Project. Viewed 2k times 0 . 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. Indexes This collection provides solutions to the HackerRank SQL Certification Test problems. In addition in my test lab environment I disabled the password complexity to keep very simple and easy passwords. 9–Oct 3, 2024 among a random sample of U. There are two tables in the database: price_todayand price_tomorrow. mysql. country name HAVING AVG(i. Ask Question Asked 3 years, 11 months ago. - 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. The Oracle Database sample schemas are based on a fictitious sample company that sells goods through various channels. 02%. JOIN PACKAGES P1 ON S. You switched accounts on another tab or window. Developed a Tableau dashboard to perform analysis, producing quantitative visualizations in Tableau to draw Overview. product_name, ROUND(sum(ii. If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. 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. To get only the customers with order, use an INNER JOIN. product_id = All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. PRONAME, SUM(OD. 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 🎓. 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. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. No cash value. exchange_rate) and calculates a row number for each row. 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. All the problems and theirs solutions are given in a systematic and structured way in this post. 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. 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. I will try my best to A desktop application that uses Envato API to get sales data for Envato market Authors. id INNER JOIN Customer CU ON CU. This is too long for a comment. Customer Demographics: The dataset includes customers from various age groups, with sales distributed across different categories such as Clothing, Electronics and Beauty. Furthermore, fill the SQL Server name where your database resides in Server name field. Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. Solution. Learning Pathways White papers, Ebooks, Webinars certificate-intermediate-hackerrank. total_price) FROM country co, city ci, customer cu, invoice i WHERE co. id=orders. This repository contains solutions for Hacker Rank SQL problems. I am guessing that all decent databases would You signed in with another tab or window. File metadata and controls ,round(invoice_item. id WHEN category = 'product' THEN p. Enhancing University Recruiting: Juniper’s Success Story with HackerRank Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. products ( product_id INT IDENTITY (1, 1) PRIMARY KEY Code language: SQL (Structured Query Language) (sql) Table sales. Data Two tables: Customers and Orders. Customer Spending. Basic Select. id = c. SQL-Business-Expansion and 2. 4% of all SQL online submissions for this problem. [An editor is available at the bottom of the page to write and execute the scripts. Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. sql files for the solutions I submitted! sql hackerrank oracle-sql hackerrank-sql-solutions. id = cu. As part of the business expansion efforts at a company, your help is 1. 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. country_name, Ci. HackerRank SQL Solutions. ORG, c. You’ll apply SQL skills like joins, subqueries, and CTEs to explore product, order, and customer data. You signed in with another tab or window. Example Task: Write a query that groups data by a specific column and calculates the sum for each group. 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. FRIEND_ID Hello coders, today we are going to solve Draw The Triangle 1 HackerRank Solution in SQL. Alternative Queries. The second query uses a redundant select distinct. - 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. Navigation Menu Customer Stories Partners Executive Insights Open Source GitHub Sponsors HackerRank-Solutions / SQL / 4_Basic Join / 05_Top Competitors / Top Competitors. product_name, a. Like Practice questions of C | C++ | JAVA | PYTHON | SQL and many more stuff. 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. SELECT first_name from customers WHERE first_name not in (select first_name from customers join orders on customers. Reason: Grouping and aggregating data are necessary for summarizing data and performing aggregate calculations. These are not the only solutions. " Learn more You signed in with another tab or window. city_name ) SELECT Hakerrank SQL Intermediate Certification Solutions Invoices Per Country SELECT co. The output would look something like this: Why this video is 7. Customer) totalOrders, COALESCE(SUM(b. Aggregation. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. invoice_id and ii. The query should return all customersmer id, product id and invoice item id. quantity FROM (SELECT customer. ); 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. ID = F. This database sample is composed of 6 tables. Your three queries are different semantically, as written with the provided table definitions. - 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 🎓. The retailer can use this information to describe and predict customer behavior. ; Sales Trends: Monthly analysis shows variations in sales, helping identify peak This repository contains the solutions to the HackerRank SQL (Intermediate) Skills Certification Test. Orders. Kaggle uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Table of Contents. 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. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Without Sales(solution-1,2). The test consists of two tasks that involve querying a database using SQL. ID, c. 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. FROM sales_amount s: The sales_amount table is aliased as s. 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. country_name,CI. id THEN 'product' END as 'category' FROM customer as Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. customer_name, a. 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. NAME. There So, after reading some other materials and trying a few different things, I think I have a correct query. - SQL-HackerRank-Solutions/1. - 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 🎓. SELECT c. Hard. 'name' is unique column name in 'Hackers' table; 'sum(score)': the 'score' here is actually the alias given by 'max(score)' in the subquery. MySQL; Problem. My current query gives me the Products OverflowAI; Hackerrank SQL problem to solve in Oracle's SQL version. GitHub community articles Repositories. OrderDetails. hdbspo ugrea ulcgr rcum lsxiugw uyk npzogxw tjrvqxo nqbagg wxrzsq