Sales percent hackerrank sql question. Sample table: customer .

Sales percent hackerrank sql question Easy Problem Solving (Basic) Max Score: 15 Success Rate: 93. OrderDate) as [Sales Year], MONTH(o. Try Teams for free Explore Teams. com, questionID 10319. I will try my best to You signed in with another tab or window. w3resource. Can anyone help? There were a number of contests where participants each made number of attempts. Practice. The Overflow Blog “Data is the key”: Twilio’s Head Identify sales where the previous sale amount was higher than the current sale. So, make sure you select "MySQL" on HackerRank while answering questions. 25 Advanced SQL Interview Questions Hopefully that gives you enough pointers to formulate the SQL yourself. SQL (Structured Query Language) has become an indispensable skill in the data-driven world. To practice this SQL translation skill can also check out the 60+ question on DataLemur 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. MIN_MARK and G. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Hacker rank SQL intermediate solution. Learn how to answer them effectively and land your dream job. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Status. We The subquery selects the sales_date (s. . The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. 90411 Joe. however, due to data types if using 100 you can still get the result rounded to 0 decimals you desire for the % where as if you put it after the division operation you would have to make sure that you cast to a data type that For the date 2023–01–01, the day difference is 1 day. Advanced Select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 03%. For each employee, determine the number of hours worked during the weekends. product_id – The ID of the product sold. Finally, the output shows the product family, the total sales, and the valid sales percentage. As a data analyst at IBM, you have been asked to analyze sales data from the IBM e-commerce platform. is_evil != 1 AND W. Solved. com. First table name is Sales_Table. It defines the window or set of rows over which the function operates. Your query looks correct for the question you asked. Last Year Bikes 1 10 000 0 Bikes 2 12 000 11 000 Bikes 3 12 000 11 500 Bikes 4 0 15 400 but my SQL is rusty after doing front-end development for so long. g. Medium. SQL TABLE Challenges-1: Write an SQL query to find the best seller by total sales price. Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 1: 60: Movie rentals and Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. e. Retrieve each product bought by a Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Please read our cookie policy for more Intermediate. SQL statement to generate a report with customer name, city, order number, order date, order amount, salesperson name, and Saved searches Use saved searches to filter your results more quickly Potential Theory Questions for SQL Exams from (https://data36. Amazon Orders SQL Technical Assessment . The result includes the names of the city and product, as well as the total 6. Please make sure you are not interrupted during the test, as the timer cannot be paused once started. Please login to submit your explanation. Level up your coding skills and quickly land a job. Write a query to determine the percentage of buyers who bought AirPods directly after they bought iPhones. Round your answer to a percentage (i. This article will delve into 1. Covered in subquery practice exercises 10, 11, 12, and 13. This was my previously submitted (accepted) solution in MS SQL Server, but this much should be the same for MySQL. Step 3: After this, we created a for loop. Step 2: then, we created a dictionary to store the name and marks of students. Browse other questions tagged . It has the following columns: date – The date of sale. Surprisingly it does seem to understand PL/SQL; and even more surprisingly it handles the set Contribute to aghodke24/HackerRank-Sql-Advanced-questions development by creating an account on GitHub. Skills. coins_needed) FROM Wands W2 INNER JOIN Sample Output. Medium SQL (Intermediate) Max Score: 30 Success Rate: 92. Use `L; AG()` and a conditional filter. I want to create simple currency converter. It stands for Structured Query Language and was developed by IBM in the 1970s, SQL allows us to create, read, update, and delete data with simple yet effective commands. HackerRank. Which type of language is savepoint and what it does? Once you attempt the question then PrepInsta explanation will be displayed. I want to calculate the month-by-month percent change, starting in August. Follow-Up Airpod Percentage [Apple SQL Interview Questions] The Apple retention team needs your help to investigate buying patterns. Covered in subquery practice exercises 10 Here are some question which is asked in recent swiggy for data/business analyst role. 1. Medium SQL (Advanced) Max Score: 40 Success Rate: 93. Here’s how you can do it using a subquery: Pivot the Occupation column so the Name of each person in OCCUPATIONS is displayed underneath their respective Occupation. Difficulty Level: Easy Question: Query the average population of all cities in CITY where District is California. select the top 3 departments with at least ten employees and rank them A correlated subquery may be the simplest to read and understand: declare @t table (MinLimitExclusive int, MaxLimitInclusive int, TaxRate decimal(5,2)) insert into @t(MinLimitExclusive,MaxLimitInclusive,TaxRate) values (0 ,14000 , 10. exchange_rate) and calculates a row number for each row. Platform Help | Execution Environment | FAQ. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. id, WP. it excludes Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Boost your database management skills, improve your data manipulation techniques, and become proficient in SQL queries. Hard. Input Format. TotalAmount else 0 end) AS [Dispenser Sales], SUM(case when c. Continent) and their respective average city populations In this article, we’ll provide a brief overview of the HackerRank Advanced SQL Certification, including what it covers, who it’s for, and how to get certified. GRADE DESC, S. Viewed 9k times SQL query for overview of purchased products per user. Return Customer Name, customer city, Salesman, commission. Teams. coins_needed, W. Get Certificate. SELECT first_name, last_name, monthly_sales, period FROM salesperson sp JOIN sales s ON sp. How to access and use 2d-arrays. That's why IBM uses HackerRank for SQL query questions in interviews for Data Science, Solutions Architect, and & Data Engineering jobs. Copy link. Use SUM(amount) OVER (PARTITION BY MONTH(sale_date)) combined with LAG. I am writing answers of these question using SQL Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. In a situation where a business needs to report on sales data, it is essential to extract key details such as the product 19. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. - Sukanya807/HackerRank_SQL_Advanced_Joins HackerRank SQL Problems and Solutions —2. 15 Days of Learning SQL. 06%. Some skills like subqueries, complex join, etc were tested but way more complicated things were on the test. Question 2. 💡 You can get practice questions with hands-on coding on DataInterview SQL Pad. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare You signed in with another tab or window. I've used an inner join, but you might want to look into left & right joins. Contribute to devika-be/HackerRank-SQL development by creating an account on GitHub. Name ELSE NULL END) AS NAME, G. I provided my own insights and unique solutions as much as I can. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview 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. You're given order details and have to find out the coun From the following tables write a SQL query to find salespeople who received commissions of more than 12 percent from the company. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Products Sales Per City(Solution-1,2). In this repo, you can find solutions to SQL This repository contains all 58 solutions to the HackerRank SQL Practice Questions. Challenge SQL Interview questions for business analysts, data analysts, data scientists, data engineers. 65%. You signed out in another tab or window. Basic Select. . Amazon Orders Data. Click here to see more codes for NodeMCU ESP8266 and similar Family. 99%. Interview Preparation. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare This is a new question Hackerrank has added for the advance level SQL certification. : enclosed in parentheses). How could I do that within my SQL query? TIA. Percentage of revenue per movie by category: medium: 6% 4. salesperson_id WHERE monthly_sales > (SELECT AVG(monthly_sales) FROM sales Solutions to all the HackerRank SQL questions to help you reach the gold badge. You switched accounts on another tab or window. In this section, we take a look at the 40 most popular intermediate SQL questions and answers, so that you'll know what to expect from your interviewer. We use cookies to Welcome to HackerRank SQL No. 50%. 75%. HackerRank SQL Question 15 Difficulty Level — Easy to Medium Question: Query the greatest value of the Northern Latitudes (LAT_N) from STATION that is less than. Question I struggle with is: Store each exchange pair separetly like: USD-EUR EUR-USD If I have 100 different currencies then I store 100 * 100 pairs = 10000 records Or to store only from one base currency, for example have USD as base and have buy and sell rates from USD to other currencies one way. sql; postgresql; Share. Grade >7 THEN S. Problem 1. Weather Observation Station 20. of questions 2 questions. Ollivander's Inventory. Given the customer_purchases and product_list tables Monthly Percentage Difference. Please ensure you have a stable internet connection. S Easy SQL (Advanced) Max Score: 25 Success Rate: 96. SELECT W. Adi The PM's Substack. Your favourite senior outside college. Hacker 86870 got a score of 30 for challenge 71055 with a difficulty level of 2, so 86870 earned a full score for this challenge. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Modified 3 months ago. catid = 2 then o. Will be adding SQL Advanced Questions soon in a separate repo. Easy. Here are the schema details as below. 02%. Sales Data for all customers and products. Join over 23 million developers in solving code challenges on HackerRank, one Given a sales table with sales amount stored in local currencies and an exchange rate table containing currency conversion rate, to get total sales amount in USD for each sales date I need query Skip to main content. Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. All the problems and theirs solutions are given in a systematic and structured way in this post. 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. Step 5: we have also taken the input of scores and stored them in a list. The STATION table is described as 40 Top Intermediate SQL Interview Questions and Answers. Show total sales for each month, with the amount sold in the previous month. Which leads me to believe it is the opposite. HackerRank SQL Solutions. Follow-up Airpod Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. Step 4: inside for loop, we have taken an input of the name. (SELECT SUM(total_cost) FROM sales_info GROUP BY distributor_id); SQL Code Editor: About. Solve Challenge. In this video, you will be solving a SQL Interview question that has been asked in HackerRank assessment of Meesho. Solutions to SQL Questions - HackerRank . Interview Questions. Weather Observation Station 4 | Easy | HackerRank Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. 744: ACCESSORY: 0: 0 . You may have misinterpreted the question. Explanation. One frequent question is to find the second highest salary from an employee table. SELECT YEAR(o. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. 40%. I was not able to solve it at all. Column1: Product Column2: Units sold Column3: Growth from previous month (in %) Column4: Growth from same month last year (in %) In my table the Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Weather Observation Station 18. 66%. Time: 00: 00: 00. Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Connect With Me. Due to precedence of SQL statements it will be the same. We’ll also provide some tips on Inside you will find the solutions to all HackerRank SQL Questions. We use cookies to The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. If you look at it - it is an arithmetic expression (a division), Please Saved searches Use saved searches to filter your results more quickly You have to join the other tables involved (based on the schema shown) and use conditional aggregation, to get a split by category id. power FROM Wands W INNER JOIN Wands_Property WP ON W. It's all about translating the word problem into SQL, which sounds easy, but the problems are written quite weirdly on HackerRank. Hackerrank contains 58 SQL based problems for interview practice, as i go through these will keep a solution bank here categorised into the three difficulties (basic, intermediate, advanced) Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. In this repo, you can find solutions to SQL questions on HackerRank. Today’s interview question comes from stratascratch. Sales: model_id, country_id, quantity, sales_date; All the country-wise sale records of its cars in table sales, storing quantity sold on a particular date. 50), (48000,70000 , 30. So the report should look something like this: Category | Month | Rev. Again, here’s a video walkthrough of this solution. amount – The amount of that product sold on a you can get more of the same in our Annotated solutions to HackerRank's SQL domain questions. Modified 5 years, 6 months ago. x), the exchange rate (e. Ask Question Asked 3 years, 5 months ago. Return distributor ID , If there is a tie, report them all. sql Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Home. SELECT p. Draw The Triangle 2. I have also earned a 5-star badge on HackerRank for SQL, demonstrating my proficiency and expertise in This respository contains the solutions to the SQL questions on HackerRank based on Advanced Joins. MARKS BETWEEN G. Question Type: Revising Aggregations #02. Facebook. Skip to content. need to write a query calculates country-wise sales for all of the car models along with the total_sales generated for the year 2020 in ascending order That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. Easy Problem Solving (Basic) Max Score: 20 Success Rate: 93. Ask Question Asked 5 years, 6 months ago. : This is the special sauce that turns an ordinary function into a window function. So, to help you prepare, SQL Question 8: Average Sales of IBM Products. Sep 16, 2024. Comments. In. We recommend you to try the sample test for a couple of minutes, before Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. sql │ ├── Sales Analysis 3. Each solution includes a brief explanation of the problem and my approach to solving it. GRADE, S. and ?. total_price) / (SELECT SUM(total_price) FROM Sales)) * 100 AS revenue_percentage FROM Sales s JOIN Products p ON s. More. (SUM(s. 77%. Solved queries for the Hackerrank SQL (Intermediate) Skills Carefully selected 27 interview questions for advanced SQL. catid = 1 then o. We 🎥 Welcome to Day 6 of the SQL Interview Preparation Series! In this session, we’re exploring creativity and formatting in SQL. where LAT_N is the northern latitude and LONG_W is the western longitude. For SQL Server: SELECT (CASE WHEN G. Whether you’re a budding data analyst, an experienced software engineer, or a database administrator, mastering SQL through practical exercises can significantly enhance your problem-solving skills. Start. Notes. I was able to get the 1st question done after a bit of time figuring out the web interface and reading and rereading the requirements to try and figure out why exactly it was failing on the validation steps. sql; oracle Answer: SQL QUESTION 3: Can you explain the difference between . I need to build a query with 4 columns (sql 2005). This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your This is my table and i want to find the percentage of those who have vaccination_date1 as not null. Medium SQL (Intermediate) Max Score: 30 Success Rate: 93. Each question covers a different aspect of SQL, providing a comprehensive learning experience. FROM sales_amount s: The sales_amount table is aliased as s. These concepts introduce more complex features and functionalities of SQL. This is a timed test. Binary Tree Nodes. It’s a multi-part SQL question, similar to how take-home SQL challenges are structured, and asks increasingly more complex questions about the amazon orders. Home > HackerRank Test Papers and Placement Papers > HackerRank Quantitative Aptitude Test > HackerRank Percentages Questions and Answers. NAME, S. 15%. Navigation Menu Finding the percentage: MySolution: Lists: MySolution: Tuples: MySolution: Strings. Determine the percentage increase or decrease in sales compared to the Saved searches Use saved searches to filter your results more quickly Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. The times that employees log in and out are recorded over the course of a month. Revising the Select Query I – HackerRank Solution; Revising the Select Query II – HackerRank Solution; Looking for 100 SQL interview questions seen in FAANG, startups? Here's a guide for data analysts, data scientists, and data engineers! Calculate the 7-day moving average of daily sales. Click here to see more codes for Raspberry Pi 3 and similar Family. It seems like SQL questions are either super Q ue 1. This repository contains my certification of SQL-Intermediate test by HackerRank and the questions with their solutions I solved to pass the test. It is used to This repository contains the solutions for HackerRank Beginner and Intermediate SQL Certifications. 00), (70000,1000000, 33. So, without wasting any time, let’s jump to the solutions. Contribute to acarter881/hacker_rank_sql_answers development by creating an account on GitHub. coins_needed = ( SELECT MIN(W2. There are many repos on the internet for the solutions of these questions. 50), (14000,48000 , 17. Hey Everyone! This was not sent to your SQL Interview Questions and answers Part 22 | Amazon SQL Interview Question And Answer Part-6Input :- There are two table. These questions are more suited to SQL practitioners with a few years of experience. Question 1. product_family: total: valid_solds_percentage: CONSUMABLE: 103: 100: GADGET: 86: 76. Learn how to answer these questions with ease in this in-depth post. Sample table: customer . Step 6: then we stored names Welcome to HackerRank SQL No. Area 3 - SQL Optimization and Performance HackerRank, or even a whiteboard session. Possible testing basics for the job and what else i may know. On this day, two users, A and B, both have a submission count of 1, so they are considered continuous submitters from the first day; Welcome to HackerRank SQL No. Beginner Certification Merit Rewards : Write a query to find employee Ids along with names of all employees who worked in the HR department who earned a bonus of 5000 dollars or more in the last quarter. OrderDate) as [Sales Month], SUM(case when c. clause, but it is used to filter the groups of rows created by the clause rather than the rows of the table HackerRank DBMS & SQL Quiz- 1. Please read our cookie policy for more information about how we use cookies. I am writing answers of these question using SQL. You can't reference total in your order statement due to the way SQL calculates the dataset. Contribute to aghodke24/HackerRank-Sql-Advanced-questions development by creating an account on GitHub. Share. Topics │ ├── Queries quality and percentage. Click here to see solutions for all Machine Learning Coursera Assignments. dataelephant dataelephant. 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 This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. SQL - HackerRank Questions and answers. Which of the following is true about SDL? It is used to define internal Schema. Write a query to list the contestants ranked in the top 3 for each Practice SQL questions to enhance our skills in database querying and manipulation. Show Graph. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. Contribute to karunakaran186/Sql-intermediate-hackerrank-solutions development by creating an account on GitHub. It would make more sense if the question was: "return all countries that have more customers than the average number of customers of all countries". I want to create a report comparing 2007 and 2008, showing 0 for the months with no sales. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution In this video, we will solve a SQL question which has been asked in HackerRank Assessment by Swiggy. @Digitalsa1nt (100 * 2) / 4 = 50, (2/4) * 100 = 50 as long as the enumerator is is the part being multiplied. My guess is ,it would look like SELECT COUNT(SSRN) FROM CITIZEN WHERE VACCINATION_DATE1 IS NOT NULL/ Obviously, the code exactly as you have it is not valid SQL. 20%. From here, think about how you would associate employees with their department, calculate and display the Saved searches Use saved searches to filter your results more quickly Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. product_id = p. Join over 23 million developers in solving code challenges on HackerRank, one of the SQL interview questions have been a critical component of technical hiring for decades. Easy SQL (Advanced) Max Score: 25 Success Rate: 97. Data Analyst SQL Questions asked in Swiggy Interview Here are some question which are asked in recent swiggy for data/business analyst role. Your given an . Ok. notes, I've given the tables an alias to ensure you don't get conflicts between the column names. sql │ ├── Reported posts. 2D Array - DS. 563 2 2 gold Then your question is easily answered using lag(): WITH o as ( SELECT date_trunc('month', dateordered) as yyyymm, SUM(CASE Then practise these top SQL interview questions and answers for 3 years to 10 years of experienced professionals. You can toss a subquery in your WHERE clause to find customers that have had sales today: SELECT count(*) /*count of transactions*/ FROM transactions WHERE /*Transactions in the last two months*/ transaction_date > DATEADD(mm, -2, GETDATE()) /*For customers that have had a sale today*/ customer_number in (SELECT customer_number HackerRank. The attempt with the highest score is only one considered. The STATION table is described as follows:. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare Saved searches Use saved searches to filter your results more quickly Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Perhaps add text describing how it improves on previous answers (and why you selected TOP(7) which seems to result in an incomplete answer e. We recommend you to try the sample test for a couple of minutes, before This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. 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 . 20 for 20%, 50 for 50) with no decimals. Host and manage packages Ask questions, find answers and collaborate at work with Stack Overflow for Teams. txt. MAX_MARK ORDER BY G. Sep 26, 2024. table: ORDERS I have a SQL table with columns (TRANSACTION_ID, STOCK_NAME, STOCK_ID, VALUE, TYPE). 49%. MARKS; Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Get Prime Course List. The authors dataset has 1M+ rows; Create an SQL query that shows the TOP Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. This table contains Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. They You signed in with another tab or window. 00) declare @transactions table (Income My solutions to SQL questions from HackerRank. python3 hackerrank-python hackerrank-solutions If you want to get the products that does not exists in orderline table you can simply use LEFT join with WHERE orderline. We recommend you to try the sample test for a couple of minutes, before Are you preparing for a SQL interview? SQL is a standard database language used for accessing and manipulating data in databases. total_sales FROM ( SELECT product_id, total_sales, PERCENT_RANK() OVER (ORDER BY total_sales DESC) AS sales_percentile FROM product_sales ) AS ranked_products Saved searches Use saved searches to filter your results more quickly The test was harder than some ‘intermediate’ level questions on hackerrank. Unsolved. For both newcomers and seasoned professionals, mastering Steps Used in solving the problem - Step 1: First, n will take input for a total number of students. New Companies. About. id = s. code WHERE WP. We use cookies to ensure you have the best browsing experience on our website. productid FROM product p LEFT JOIN orderline o ON Hi. sql │ ├── Sales Analysis 2. Mar 31, 2024. This question about Amazon orders comes from a real Amazon Data Analyst SQL assessment. Is Hackerrank SQL advanced certification useful for job applications? It was 2 questions in a one-hour time slot that were actually pretty complicated. MARKS FROM STUDENTS S JOIN GRADES G ON S. product_id GROUP Saved searches Use saved searches to filter your results more quickly Question 2: Generate the following two result sets: Query an alphabetically ordered list of all names in OCCUPATIONS, immediately followed by the first letter of each profession as a parenthetical (i. Table: Column Name Type; I have the following SQL statement that shows the total sales amount for customers in cities who have done at least 2 orders. It includes solutions to 25 questions in the SQL (Basic)/ SQL (Intermediate) Select Skill in the Easy and Medium Diffic Master SQL with our essential SQL exercises designed for all skill levels. Packages. sql │ ├── Sales Analysis 1. The report must be in descending order by grade — i. 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 Exactly. Share this post. Given a table named . This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. I need to get the SQL query to find the total profit/loss in each of the stocks. Hard SQL (Advanced) Max Score: 50 Success Rate: 78. Stack Overflow. age, W. Similar to what the other comment mentioned. Luck Balance. sql │ ├── Replace employee id with unique identifier. The clause works similarly to the . 88%. The table represents the investment in different stocks as transactions. Challenges. Practice data science interview questions asked in actual interviews from top companies. Improve this question. com) Let’s say you have two SQL tables: authors and books . This Year | Rev. We Now that I got these values, I can find a percentage of the valid sales. Any help is greatly appreciated! Please Welcome to HackerRank SQL No. You’ll find problems that require JOINs, GROUP BY, filtering, CTEs, and window functions here. HackerRank Percentages Questions and Answers. and Prices per Sale ID from the Sales Table Using SQL. Perfect for beginners and Average Population of Each Continent | Easy | HackerRank Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY. 0. sql │ ├── Rising Temperature. - Ishika63/HackerRank-SQL-Intermediate-Solution Question 2: Product Sales per City. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms. This is a SQL query to get the total amount spent on each product in each city. Finding the Second Highest Salary. HackerRank | Prepare; Certify; Compete; Easy SQL (Basic) Max Score: 10 About. Given a table of purchases by date, calculate the month-over-month percentage change in Prepare for your interview with our curated list of Facebook SQL interview questions. View Jobs. Quiz; (All Languages), Competitive Coding (All Languages), TCS, Infosys, Wipro, Amazon, DBMS, SQL and others. Today’s problems focus on cu As per the question title I would like to understand which SQL would be efficient and why based on the below solutions assuming the data volumes are high in both the tables PRODUCTS( millions of rows ) AND SALES( billions of rows ). These solutions can You signed in with another tab or window. For example, if there are three records in the table with CITY values 'New York', 'New York', 'Bengalaru', there are 2 different city For example, if you’re ranking sales by date, you’d use . The CITY table is @AlvinH . – This repository contains solutions to all the HackerRank SQL Practice Questions - Pavith19/HackerRank-SQL-Challenges-Solutions Here is another way of doing so where MAX is treated as analytical function (Available since SQL Server 2005) I'm not sure that this answers the question (sql fiddle using base from John Woo's answer). Inserting a Node Into a Sorted Doubly Linked List. Feel free to ask doubts in the comment section. You are given two tables: Customers and O Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. TotalAmount else 0 end) AS Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Internship & Job Tips. By detailing sales figures per city and identifying customers who spent 25% or less than This repository contains solutions to various SQL challenges from HackerRank. This is hard SQL question asked in DELL and MICROSOFT interview published at stratascratch. Reload to refresh your session. Writing a SQL select statement to calculate commission paid to sales employees fro the month of December. - raleighlittles/HackerRank-SQL You signed in with another tab or window. Easy Problem Solving ServiceNow asked these 10 SQL interview questions in recent Data Analyst, Data Science, and Data Engineering job interviews! Can you solve them?? SQL is used internally by Data Analysts and Data Scientists who The last table in the dataset is sales_history. I was actually kind of annoyed hackerrank-python hackerrank-solutions hackerrank-javascript hackerrank-30dayschallange hackerrank-sql hackerrank-statistics hackerrank-interview-kit hackerrank-certificates Resources Readme My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - 07Agarg/HackerRank_Solutions. What is a function in SQL, and why use functions? This article contains 35 data analyst sql interview questions. Print Prime Numbers. 23%. sql │ ├── Reformat department table. with columns , , Inside you will find the solutions to all HackerRank SQL Questions. All my solutions are written in MySQL. Q1. We recommend you to try the sample test for a couple of minutes, before Top 15 Amazon SQL Interview Questions. Subdomains. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. 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. Hackerrank SQL Practice Questions - P7. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - 07Agarg/HackerRank_Solutions. Ketty doesn’t want the NAMES of those students who received a grade lower than 8. code = WP. Email. Practice & prepare SQL interview questions . Follow asked Jul 20, 2017 at 17:49. This is the best place to expand your knowledge and get prepared for your next interview. Instructions. sql; oracle-database; or ask your own question. pehqp wnylao mltisq xqwseq sxa tee oqw vcitjsiy gakmdl blq