Invoices per country hackerrank solution in sql server The questions asked are Invoices Per Country and Product Sales Per City. The average cost (sum of tolls paid per road traveled) should be minimum. 6: Binary Tree Nodes: Solution: We can write this query using simple case when statements. Todd has been an employee for 5 months and earns $3396 per month. time_issued Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Each link leads to the document containing both, the question statement and the answer, written in MS SQL Server (except for two short problems that were written in Problem. id = cu. Solution sql sql-server hackerrank sql-query sqlserver hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hacker-rank hackerrank-sql-challenge. You can view my certificate by clicking the link below: View HackerRank Certificate All you need is one query with an instance of your base table and two instances of your conversion table, one joined on base. Write a query to find the node type of Binary Tree ordered by the value of the node. Please You signed in with another tab or window. Forks. product which has sold the most inner join. continent order by country. Here's the SQL. country_name HAVING COUNT(customer_name) > (SELECT AVG(temp. total_price) from country co, city ci, customer cu, invoice i where co. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions In this repository you will find my answers to the SQL challenges proposed in HackerRank, from basic to advanced level. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. You signed in with another tab or window. city_id and cu. If you have a table with SALES {Customer_ID, Price, SmallDateTime date}. Hacker Rank SQL. CustomerName, I. - qanhnn12/SQL-Hackerrank-Challenge-Solutions You are given a table, BST, containing two columns: N and P, where N represents the value of a node in Binary Tree, and P is the parent of N. customer_name, p. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. first_Name, c. continent, floor (avg (city. MySQL; Problem. select ci. Click here to see more codes for Raspberry Pi 3 and similar Family. Get most sold product for each country from NORTHWIND database. Select 40 most recent sales from each You need a nested select to first calculate the number of invoices per customer. We order our output by ascending employee_id. Feel free to explore the solutions and the approach I took to solve these challenges. This is the only video you will need to improve you Welcome to CarrY4U Every week the provider needs to generate invoices per shop for a period given based on open transactions. SQL Server - Top Saleperson Per Region. country_id and ci. code group by country. amountCurrency = rate. id, COUNT(customer_name) AS cnt FROM city ci JOIN customer cu ON ci. Advanced Join. Samantha Julia Scarlet Explanation. TransactionDate, I. contact_end_time < i. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. 7780. 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 You signed in with another tab or window. Weather Observation Station 5 Query the two cities in You signed in with another tab or window. The outer select can then calculate the number of customers for each invoice count. Check Your Solution Your solution should have 2 columns and 24 rows. The OCCUPATIONS You signed in with another tab or window. InvoiceTotal, N = COUNT(*) OVER(PARTITION BY I. quantity), 0) AS quantity FROM customer c LEFT JOIN invoice i on c. - kumod007/All-HackerRank-SQL-Challenges-Solutions This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. sql","path":"Hackerrank SQL solutions/African Cities Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Sales Per City(Solution-1,2). Joe has been an employee for 9 months and earns $3573 per month. Finding the city with the max population. Test duration 35 mins. - Ishika63/HackerRank-SQL-Intermediate-Solution HackerRank SQL Basic - Count the Employees solution https://www. cost) AS hc_sales_total FROM Customers c INNER JOIN This repository contains my solutions for the HackerRank intermediate-level problems using MySQL. 100 points equals € 1,-, so basically every euro cent (€ 0,01) is one point in our system. continent; ← → Even-tual Reduction CodeChef Solution 19 July 2020 HackerRank Regex Solutions 20 July 2020 → ← Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Write a query to print the hacker_id, name, and the total number of challenges created by each student. - -hackerrank-SQL-intermediate-skills-certification-test-solution/README. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Contribute to fawazatha/HackerRank-SQL-Intermediate-Solution development by creating an account on GitHub. Alternative Queries. population)) from city, country where city. Invoice I {"payload":{"allShortcutsEnabled":false,"fileTree":{"Hackerrank SQL solutions":{"items":[{"name":"African Cities. We use cookies to ensure you have the best browsing experience on our website. product_name, Coalesce((ii. Scan count 1, logical reads 11, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0. Web Development Tutorial Playlist: https://www. Star 9. Table of Contents. Can you What I want is a listing of all invoices where there is more than one per customer. Problem; Input Format; Explanation; Solution – Contest Leaderboard in SQL. Please don’t copy the the code . country_name, count(*), avg(i. These problems are generated by HackerRank, but the solutions are provided by Niyander. customer_id and i. JOIN COUNTRY ON CITY. HackerRank SQL Solutions. However, in the above query I have tried sticking to using standard SQL. 7780 ORDER About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright You signed in with another tab or window. 65%. SQL (Basic) SQL Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. These solutions can be used as a reference for other learners or as a way to practice and improve SQL skills. So, without wasting any time, let’s jump to the Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. price = b. Skill over pedigree. zee. Sample Output. Table 'user_visits'. Invoice I You signed in with another tab or window. (3) Hopefully your book and class taught good practices, such Case in point: If Person X made an invoice for Person Y, but never contacted Hamza, then the row should be printed. Problem; Input Format; Solution – Average Population in SQL. Disclaimer: The above Problem (Revising Aggregations – The Count Function) is You signed in with another tab or window. country_name, COUNT(customer_name) FROM country co JOIN city ci ON co. There are N cities in Hacker Country. line_total_price), 2) as tot from city ci, customer cu, invoice i, invoice_item ii, product pr where ci. Hard. So, without wasting any time, let’s jump to the solutions. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. Hello coders, today we are going to solve Average Population HackerRank Solution in SQL. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice hackerrank hackerrank-python hackerrank-solutions hackerrank-sql Resources. Both solutions have the same number of reads, work table, etc. Please Inside you will find the solutions to all HackerRank SQL Questions. cnt) FROM (SELECT ci. Sign in Product where LAT_N is the northern latitude and LONG_W is the western longitude. CountryName ORDER BY Angela has been an employee for 1 month and earns $3443 per month. Code are matching key columns. Watchers. ; Leaf: If node is leaf node. Q. You can use the code to make your You signed in with another tab or window. id = ii. Here's the SQL SELECT CustName as 'CustomerName' , MAX(DocNum) AS 'Last invoice number' FROM TDocHeader GROUP BY CustName Verify your SQL Skills. We use cookies to ensure you Several comments: (1) You are using SQL Server syntax, but the question is tagged MySQL. com I have used MySQL and MS SQL Server for the solutions. product_name order by tot sql sql-server hackerrank sql-query sqlserver hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hacker-rank hackerrank-sql-challenge. Readme License. 55; Julia’s best friend got offered a higher salary than her at 12. " Learn more Footer About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright SQL Intermediate Certification Hackerrank Solution https://www. I have the following SQL statement that shows the total sales amount for customers in cities who have done at least 2 orders. category = b. code group by country. The CITY table is described as follows: Field You signed in with another tab or window. com Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY. 2. SQL-Product-Sales-per-City files for the solutions I submitted! Key competencies: Complex joins-This customer, invoice, invoice_item, and product. SELECT customer_ID, first_name, last_name, sum(hc_sales_total) as totalsales FROM ( SELECT c. CustomerID) FROM dbo. CountryCode and COUNTRY. Skip to content. Each solution includes a brief explanation of the problem and my approach to solving it. Query the average population for all cities in CITY, rounded down to the nearest integer. After the international calling code or prefix, the country code is typed. Sign in Problem. I have taken SQL Intermediate Certification Hackerrank Solution https://www. HackerRank's solution is using this condition to support the above logic, which is incorrect. customer_id You signed in with another tab or window. Name Type You signed in with another tab or window. Query for Oracle Database Country codes SQL. Continent) and their respective average city populations (CITY. Blog; Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution You signed in with another tab or window. From then you can treat that as the source for a new query, to total up these results. (invoice details are id's for specific line items and invoice key are which invoice they are from 'invoice 2, invoice 3 etc) I started with The outer select can then calculate the number of customers for each invoice count. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. Packages. Now, Samantha’s best friend got offered a higher salary than her at 11. These solutions were completed during a test on August 21, 2023. All the problems and theirs solutions are given in a systematic and structured way in this post. 38 watching. Binary Tree Nodes. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Here's the SQL SELECT CustName as 'CustomerName' , MAX(DocNum) AS 'Last invoice number' FROM TDocHeader GROUP BY CustName I am working on Weather Observation Station 17 in HackerRank. Before dialing the recipient's number in the destination country, one must first dial a series of numbers known as the country code. 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. id LEFT JOIN product p ON Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Population) rounded down to the nearest integer. I don't want to group or count the invoices, I actually need to see all invoices. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. SELECT [Number of Invoices], COUNT(*) AS [Number of Clients] FROM ( SELECT customerID, COUNT(DISTINCT InvoiceID) AS [Number of Invoices] FROM Sheet GROUP BY customerID ) A GROUP BY [Number of Invoices] ORDER BY [Number of Invoices] The HackerRank SQL Basic Certification gives you a credible way to prove your skills to potential employers, helping you stand out in a competitive job market. Stars. Take the HackerRank Skills Test. Michael has been an employee for 6 months and earns $2017 per month. HackerRank SQL Problems and Solutions —2. Why this video is 7. CountryId GROUP BY Countries. Easy. How do you report all sales per month? SELECT Sum(Price) As Total Sales FROM SALES Group By What Having What Another solution is to calculate the first day of the month. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Effective solutions to hackerrank. The certificate can be viewed here. * FROM tbProduct a INNER JOIN ( SELECT Category, MAX(Price) maxPrice FROM tbProduct GROUP BY Category ) b ON a. customer_id,a. phone_number) The solution of HackerRank SQL Basic Certification problem student analysis and country code is shared for your increasing knowledge. Feel free to ask doubts in the comment section. Enterprises Small and medium teams Startups By use case. We use cookies to ensure you have 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 coding challenge | hackerrank algorithms solutions github| hackerrank problem Country codes SQL solution SELECT a. However, the SUM() solution has one less operator. 1k stars. Write a query to print the id, age, coins_needed, and power of the wands that Ron’s interested in, sorted in order of You signed in with another tab or window. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution The actual question is all customers details even those without invoices and all products even those which are not sold. I took the HackerRank test on 10/11/2023. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Problem 1. Query the Western Longitude (LONG_W)where the smallest Northern Latitude (LAT_N) in STATION is greater than 38. Note : Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. I've achieved the SQL Intermediate Certification from HackerRank. Get noticed by companies. Navigation Menu HackerRank-Solutions / SQL / 3_Aggregation / 02_Revising Aggregations - The Sum Function / Working Platform:- DB2, MySQL, Oracle, MS SQL Server */ SELECT SUM (POPULATION) FROM CITY. city_id Hello coders, today we are going to solve Population Density Difference HackerRank Solution in SQL. Verify your SQL Skills. WHERE COUNTRY. SQL Query to show highest sales in a City for EACH State. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non-evil wand of high power and age. This is a timed test. Try it today. HackerRank is a platform for competitive coding. product_id = pr. 2; Ashley’s best friend did NOT get offered a higher salary than her; The name output, when ordered by the salary Welcome to CarrY4U In this post, we will solve HackerRank Hacker Country Problem Solution. Retrieving Data Using SELECT Queries Navigation Menu Toggle navigation. To set country code to column values with phone numbers in MySQL would mean to concentrate and we can use CONCAT (). Get most sold product for each country from NORTHWIND database . What I want is a listing of all invoices where there is more than one per customer. Problem; Input Format; Solution – Population Density Difference in SQL. You switched accounts on another tab or window. Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. You switched accounts on another tab Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Click here to see solutions for all Machine Learning Coursera Assignments. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright select country. The country with the most invoices should appear first. Updated Oct 18, 2020; To associate your repository with the hackerrank-sql-solutions topic, visit your repo's landing page and select "manage topics. id = ci. Subdomains. I will try my best to Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. - Pull requests · adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. customer_id LEFT JOIN invoice_item ii ON ii. SELECT Contries. countrycode = country. You did such a great job helping Julia with her last coding contest challenge that she wants you to work on this one, too! Try this one if you want to get the whole row, (supports most RDBMS)SELECT a. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Solved queries for the Hacker-rank SQL (Intermediate) Skills Certification Test - codehub001/Hacker-rank Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. If Person X made an invoice for Person Y AND contacted him, the row should not be printed. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions. 50%. 0. Accelerate your Job Search. Julia asked her students to create some coding challenges. Unsolved. It is very important that you all first give it a try & brainstorm yourselves before having a You signed in with another tab or window. YYMM#### how to generate invoice number. All 5 Questions Solution: https://www. . The HackerRank Skills Certification Test is a standardized assessment to help developers prove their coding skills. Prove your Skills. currency and the other joined on base. Listed below are the questions available in this repository. 12; Scarlet’s best friend got offered a higher salary than her at 15. country_code,a. And another way for SQL Server 2005+:;WITH CTE AS ( SELECT C. Revising the Select Query I – HackerRank Solution Navigation Menu Toggle navigation. From this i want to make a temp table of invoice key and invoicedetails key so i can find the average number of invoice line items per invoice. Advanced Select. Sort your results by the total number of challenges in descending order. Instant dev environments select country. com Saved searches Use saved searches to filter your results more quickly Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. So in this problem we need to determine a number of (i, j) pairs where i < j and ar[i The solutions of all SQL hackerrank challenges using MS SQL Server - GitHub - sonph301/HackerRank-SQL-Preparation-: The solutions of all SQL hackerrank challenges using MS SQL Server Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Note: Print NULL when there are no more names corresponding to an occupation. Select DateAdd(d,DateDiff(d,0,[Date])-DatePart(d,[Date])+1,0) , Sum( Price ) From Sales Group By See the output in the bottom after clicking the blue Run SQL button on the SQL Fiddle page. The CITY is described as follows: Field Type; ID: Country codes SQL. No. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution You signed in with another tab or window. Each pair of cities are directly connected by a unique directed road, and each road has its own toll that must be paid every time it is used. continent; 0 | Permalink Get FREE SQL Certification with HackerRank, pass in one attempt. Hackerrank — Divisible Sum Pairs. maxPrice Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. SELECT p. invoice_id and ii. Problem; Input Format; Explanation; Solution – Top Competitors in SQL. Basic Select. city_name, pr. Medium. Please In this article, I am going to share HackerRank SQL Solutions with you. Skills. azhark. country_id JOIN customer cu ON ci. last_name, SUM(hc. com is a search engine built on artificial intelligence that provides users with a customized search experience while keeping their data 100% private. of questions 2 questions. CONTINENT = ' ASIA '; # Method 2: SELECT SUM (CITY. Note that all the nodes (in the tree) are already mentioned in the N column in the table. The CITY and COUNTRY tables are described as follows: Effective solutions to hackerrank. SELECT c. population)) from city join country on city. destinationCurrency = My requirement is to display country name, total number of invoices and their average amount. Curate Retrieve information about each country's name, the count of customers, and the average total price of their invoices. You signed out in another tab or window. Use the Invoice table to determine the countries that have the most invoices. invoice_id = i. SELECT [Number of Invoices], COUNT(*) AS [Number of Clients] FROM ( SELECT customerID, COUNT(DISTINCT InvoiceID) AS [Number of Invoices] FROM Sheet GROUP BY customerID Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Platform Help | Execution Environment | FAQ. sql at master · IhorVodko/Hackerrank_solutions Another way to solve this query is using the pivot function in T-SQL. 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 SQL Server - Top Saleperson Per Region. The Hello coders, today we are going to solve Contest Leaderboard HackerRank Solution in SQL. id = i. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. The output column headers should be Doctor, Professor, Singer, and Actor, respectively. com practice problems in C++, python and SQL - Hackerrank_solutions/SQL/Draw The Triangle 1. customer_ID, c. MIT license Activity. Aggregation. Create invoice number in sql server stored procedure. CountryName, Count (*) AS Number FROM Users INNER JOIN Countries ON Users. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Given the CITY and COUNTRY tables, query the names of all UNION your two queries together. Note: CITY. The test consisted of two questions that I had 35 minutes to solve. 5 Powerful Solutions to Common HackerRank SQL Certification Problems 1. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution SELECT Country, COUNT (*) AS Number FROM Users GROUP BY Country ORDER BY Country If the name of the country is in the country table, then you will have to join. CountryId = Countries. Code Issues Pull requests Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Find and fix vulnerabilities Codespaces. - qanhnn12/SQL-Hackerrank-Challenge-Solutions Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY. Total sales amount for customers in cities. com/playlist?list=PL725CY54KY6JPgkikjL9-hANsKQeQjEO7Click here to Subscribe : https://www. select co. Filter the results to include only countries with an average total price greater than the overall average total price across all countries. Please make This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. com/ SELECT co. continent, floor(avg(city. There are almost always multiple solutions to the same problem. 423 forks. SELECT COUNT(CITY) — COUNT(DISTINCT CITY) FROM STATION ; X. You. category AND a. Updated Oct 18, 2020; TSQL; Srimanta11 / SQL. productid FROM product p LEFT JOIN orderline o ON See the output in the bottom after clicking the blue Run SQL button on the SQL Fiddle page. COUNTRYCODE = COUNTRY. HackerRank Sql Basic - Merit Rewards solutionhttps://www. The OCCUPATIONS 170+ solutions to Hackerrank. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. Solution for MS SQL MS SQL SERVER : SELECT TOP 1 CAST(LONG_W AS DECIMAL(10,4)) FROM STATION WHERE LAT_N > 38. Instructions. WHERE ct. id group by ci. product_name, ROUND(sum(ii. So, without wasting any time, let’s jump to the Skip to content. city_id GROUP BY co. Sep 16, 2024. Moreover, I need to return only those countries where the average invoice amount is greater than the average invoice amount of all invoices. Problem. SQL Server Execution Times: CPU time = 16 ms, elapsed time = 5 ms. ; Inner: If node is neither root nor leaf node. These are not the only solutions. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. countrycode = country. Navigation Menu Toggle navigation select country. Skip to main content. youtube. Welcome to HackerRank SQL (Intermediate) Skills Certification Test. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Table 1: city. 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. md at master · adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Take the HackerRank Certification Test and showcase your knowledge as a HackerRank verified developer. 5. continent; In this post, we will be covering all the solutions to SQL on the HackerRank platform. Click here for more information about HackerRank SQL Basic Certification. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. hackerrank. Output one of the following for each node: Root: If node is root node. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY. Population) rounded down to the nearest integer CITY Solution – Revising Aggregations – The Count Function in SQL MySQL SELECT COUNT(*) FROM CITY WHERE POPULATION > 100000. name,concat("+",b. - SQL-Hackerrank-Challenge-Solutions/Advanced Select/Occupations. Solutions By company size. Input Format. CODE. Reload to refresh your session. Then you'll have a table with all the costs. Solve Challenge. Query the difference between the maximum and minimum populations in CITY. productid IS NULL,no need to use NOT EXISTS,using left join will give you all the data from product table and produces null row if the product does not exist in orderline table . The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. (2) You can use SQL Fiddle as an online database to try things out. SELECT CustName as 'CustomerName' , MAX(DocNum) AS 'Last invoice number' FROM TDocHeader GROUP BY CustName Hello coders, today we are going to solve Top Competitors HackerRank Solution in SQL. com. com practice problems in C++, python and SQL - IhorVodko/Hackerrank_solutions SQL (Intermediate) SQL (Advanced) Difficulty. SQL-Business-Expansion and 2. Basic Join. Solved. Provide a table of Billing Country and Invoices ordered by the number of invoices for each country. Contribute to ejaj/SQL development by creating an account on GitHub. DevSecOps DevOps CI/CD View all use cases certificate-intermediate-hackerrank. WHERE DISTRICT = ' California See the output in the bottom after clicking the blue Run SQL button on the SQL Fiddle page. Report repository Releases. com/2022/06/05/hackerrank-sql-basic-certificatio This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Status. felvkm eihgau oaqnk bygfn judc ayq iwjwph uxvqyadv ajnodhb drssly