Sales percent hackerrank sql question. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty.

Sales percent hackerrank sql question 88%. We The subquery selects the sales_date (s. Luck Balance. Unsolved. Copy link. S Easy SQL (Advanced) Max Score: 25 Success Rate: 96. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Your favourite senior outside college. Which of the following is true about SDL? It is used to define internal Schema. Comments. Learn how to answer these questions with ease in this in-depth post. Step 4: inside for loop, we have taken an input of the name. So the report should look something like this: Category | Month | Rev. So, without wasting any time, let’s jump to the solutions. This was my previously submitted (accepted) solution in MS SQL Server, but this much should be the same for MySQL. 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. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 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. For SQL Server: SELECT (CASE WHEN G. 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. id, WP. Email. where LAT_N is the northern latitude and LONG_W is the western longitude. – 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). . The table represents the investment in different stocks as transactions. 23%. This question about Amazon orders comes from a real Amazon Data Analyst SQL assessment. Step 3: After this, we created a for loop. Sales Data for all customers and products. The result includes the names of the city and product, as well as the total 6. Follow-Up Airpod Percentage [Apple SQL Interview Questions] The Apple retention team needs your help to investigate buying patterns. Interview Preparation. sql │ ├── Replace employee id with unique identifier. These solutions can You signed in with another tab or window. 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. 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. coins_needed) FROM Wands W2 INNER JOIN Sample Output. That's why IBM uses HackerRank for SQL query questions in interviews for Data Science, Solutions Architect, and & Data Engineering jobs. 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. Level up your coding skills and quickly land a job. 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 . SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Percentage of revenue per movie by category: medium: 6% 4. - raleighlittles/HackerRank-SQL You signed in with another tab or window. This is a SQL query to get the total amount spent on each product in each city. 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. Round your answer to a percentage (i. Contribute to acarter881/hacker_rank_sql_answers development by creating an account on GitHub. Each solution includes a brief explanation of the problem and my approach to solving it. 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. 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". 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. Medium. GRADE, S. Finding the Second Highest Salary. Covered in subquery practice exercises 10 Here are some question which is asked in recent swiggy for data/business analyst role. Click here to see more codes for Arduino Mega (ATMega 2560) and similar Family. it excludes Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. SELECT p. x), the exchange rate (e. 99%. Step 6: then we stored names Welcome to HackerRank SQL No. I want to calculate the month-by-month percent change, starting in August. Get Prime Course List. @Digitalsa1nt (100 * 2) / 4 = 50, (2/4) * 100 = 50 as long as the enumerator is is the part being multiplied. 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. : This is the special sauce that turns an ordinary function into a window function. 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. We Now that I got these values, I can find a percentage of the valid sales. SQL - HackerRank Questions and answers. 77%. New Companies. This is a timed test. Return Customer Name, customer city, Salesman, commission. View Jobs. SQL (Structured Query Language) has become an indispensable skill in the data-driven world. age, W. 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. Finally, the output shows the product family, the total sales, and the valid sales percentage. 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. of questions 2 questions. I was not able to solve it at all. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. g. and ?. FROM sales_amount s: The sales_amount table is aliased as s. 2D Array - DS. 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. product_id – The ID of the product sold. Medium SQL (Intermediate) Max Score: 30 Success Rate: 93. Modified 5 years, 6 months ago. All my solutions are written in MySQL. 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. Amazon Orders SQL Technical Assessment . Contribute to aghodke24/HackerRank-Sql-Advanced-questions development by creating an account on GitHub. sql │ ├── Rising Temperature. (SELECT SUM(total_cost) FROM sales_info GROUP BY distributor_id); SQL Code Editor: About. In this repo, you can find solutions to SQL questions on HackerRank. OrderDate) as [Sales Year], MONTH(o. I am writing answers of these question using SQL. Instructions. 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. Challenge SQL Interview questions for business analysts, data analysts, data scientists, data engineers. Ask Question Asked 5 years, 6 months ago. Covered in subquery practice exercises 10, 11, 12, and 13. Contribute to devika-be/HackerRank-SQL development by creating an account on GitHub. It is used to This repository contains the solutions for HackerRank Beginner and Intermediate SQL Certifications. This article will delve into 1. The attempt with the highest score is only one considered. We use cookies to Welcome to HackerRank SQL No. 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. id = s. Please read our cookie policy for more information about how we use cookies. Time: 00: 00: 00. sql │ ├── Sales Analysis 3. 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. Given a table named . So, to help you prepare, SQL Question 8: Average Sales of IBM Products. 00) declare @transactions table (Income My solutions to SQL questions from HackerRank. The authors dataset has 1M+ rows; Create an SQL query that shows the TOP Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Due to precedence of SQL statements it will be the same. productid FROM product p LEFT JOIN orderline o ON Hi. sql │ ├── Reported posts. Notes. Question Type: Revising Aggregations #02. I want to create a report comparing 2007 and 2008, showing 0 for the months with no sales. 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. MIN_MARK and G. Practice data science interview questions asked in actual interviews from top companies. Show Graph. About. Ask Question Asked 3 years, 5 months ago. 06%. com, questionID 10319. This is hard SQL question asked in DELL and MICROSOFT interview published at stratascratch. MARKS FROM STUDENTS S JOIN GRADES G ON S. Follow-up Airpod Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. 90411 Joe. 15%. GRADE DESC, S. code = WP. Please ensure you have a stable internet connection. 15 Days of Learning SQL. Skip to content. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. 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. Will be adding SQL Advanced Questions soon in a separate repo. 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. Please make sure you are not interrupted during the test, as the timer cannot be paused once started. Solutions to SQL Questions - HackerRank . 1: 60: Movie rentals and Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. 20 for 20%, 50 for 50) with no decimals. 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. You are given two tables: Customers and O Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. In a situation where a business needs to report on sales data, it is essential to extract key details such as the product 19. dataelephant dataelephant. Modified 3 months ago. This table contains Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Stack Overflow. com) Let’s say you have two SQL tables: authors and books . product_id = p. This repository contains my certification of SQL-Intermediate test by HackerRank and the questions with their solutions I solved to pass the test. 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. Given the customer_purchases and product_list tables Monthly Percentage Difference. Try Teams for free Explore Teams. HackerRank SQL Solutions. You’ll find problems that require JOINs, GROUP BY, filtering, CTEs, and window functions here. Boost your database management skills, improve your data manipulation techniques, and become proficient in SQL queries. 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. Inserting a Node Into a Sorted Doubly Linked List. 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. First table name is Sales_Table. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Products Sales Per City(Solution-1,2). Question 2. Click here to see solutions for all Machine Learning Coursera Assignments. In this video, you will be solving a SQL Interview question that has been asked in HackerRank assessment of Meesho. 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. code WHERE WP. Status. Share. You can't reference total in your order statement due to the way SQL calculates the dataset. coins_needed = ( SELECT MIN(W2. Easy Problem Solving (Basic) Max Score: 15 Success Rate: 93. sql │ ├── Sales Analysis 1. MAX_MARK ORDER BY G. Topics │ ├── Queries quality and percentage. 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. and Prices per Sale ID from the Sales Table Using SQL. Mar 31, 2024. Use `L; AG()` and a conditional filter. As a data analyst at IBM, you have been asked to analyze sales data from the IBM e-commerce platform. 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. sql; oracle Answer: SQL QUESTION 3: Can you explain the difference between . 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. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms - 07Agarg/HackerRank_Solutions. Connect With Me. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Subdomains. Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Write a query to determine the percentage of buyers who bought AirPods directly after they bought iPhones. Share this post. 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. Show total sales for each month, with the amount sold in the previous month. 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. SELECT YEAR(o. Solved queries for the Hackerrank SQL (Intermediate) Skills Carefully selected 27 interview questions for advanced SQL. Which leads me to believe it is the opposite. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms. Solve Challenge. 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. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Hacker rank SQL intermediate solution. Follow asked Jul 20, 2017 at 17:49. 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. Sep 16, 2024. These questions are more suited to SQL practitioners with a few years of experience. Hard. 0. catid = 2 then o. Step 5: we have also taken the input of scores and stored them in a list. . MARKS; Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. TotalAmount else 0 end) AS Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Is Hackerrank SQL advanced certification useful for job applications? It was 2 questions in a one-hour time slot that were actually pretty complicated. Learn how to answer them effectively and land your dream job. I need to build a query with 4 columns (sql 2005). 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. Platform Help | Execution Environment | FAQ. 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. 50), (14000,48000 , 17. HackerRank | Prepare; Certify; Compete; Easy SQL (Basic) Max Score: 10 About. This Year | Rev. It's all about translating the word problem into SQL, which sounds easy, but the problems are written quite weirdly on HackerRank. HackerRank Percentages Questions and Answers. Home > HackerRank Test Papers and Placement Papers > HackerRank Quantitative Aptitude Test > HackerRank Percentages Questions and Answers. Explanation. 03%. Sample table: customer . Difficulty Level: Easy Question: Query the average population of all cities in CITY where District is California. Question 1. The STATION table is described as 40 Top Intermediate SQL Interview Questions and Answers. exchange_rate) and calculates a row number for each row. Similar to what the other comment mentioned. It seems like SQL questions are either super Q ue 1. They You signed in with another tab or window. Get Certificate. Hackerrank SQL Practice Questions - P7. 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. Possible testing basics for the job and what else i may know. We 🎥 Welcome to Day 6 of the SQL Interview Preparation Series! In this session, we’re exploring creativity and formatting in SQL. Improve this question. 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. (SUM(s. Any help is greatly appreciated! Please Welcome to HackerRank SQL No. 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. 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. 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'. 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 ). Today’s interview question comes from stratascratch. Which type of language is savepoint and what it does? Once you attempt the question then PrepInsta explanation will be displayed. Skills. sql; postgresql; Share. 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. 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. table: ORDERS I have a SQL table with columns (TRANSACTION_ID, STOCK_NAME, STOCK_ID, VALUE, TYPE). Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. The STATION table is described as follows:. The report must be in descending order by grade — i. We use cookies to ensure you have the best browsing experience on our website. SELECT first_name, last_name, monthly_sales, period FROM salesperson sp JOIN sales s ON sp. Interview Questions. 744: ACCESSORY: 0: 0 . 💡 You can get practice questions with hands-on coding on DataInterview SQL Pad. 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. 75%. 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. 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. Practice. The times that employees log in and out are recorded over the course of a month. Weather Observation Station 20. power FROM Wands W INNER JOIN Wands_Property WP ON W. Ketty doesn’t want the NAMES of those students who received a grade lower than 8. : enclosed in parentheses). Medium SQL (Intermediate) Max Score: 30 Success Rate: 92. Sep 26, 2024. Solved. 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. Return distributor ID , If there is a tie, report them all. 20%. 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. Your query looks correct for the question you asked. Hard SQL (Advanced) Max Score: 50 Success Rate: 78. Home. - Ishika63/HackerRank-SQL-Intermediate-Solution Question 2: Product Sales per City. Ok. 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. Data Analyst SQL Questions asked in Swiggy Interview Here are some question which are asked in recent swiggy for data/business analyst role. notes, I've given the tables an alias to ensure you don't get conflicts between the column names. Internship & Job Tips. You switched accounts on another tab or window. 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. We recommend you to try the sample test for a couple of minutes, before Top 15 Amazon SQL Interview Questions. Amazon Orders Data. Quiz; (All Languages), Competitive Coding (All Languages), TCS, Infosys, Wipro, Amazon, DBMS, SQL and others. 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. SELECT W. Click here to see more codes for Raspberry Pi 3 and similar Family. sql Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Input Format. is_evil != 1 AND W. 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. Can anyone help? There were a number of contests where participants each made number of attempts. You signed out in another tab or window. 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. Easy SQL (Advanced) Max Score: 25 Success Rate: 97. Please login to submit your explanation. I will try my best to You signed in with another tab or window. Q1. You may have misinterpreted the question. 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. Adi The PM's Substack. HackerRank. The CITY table is @AlvinH . 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. Medium SQL (Advanced) Max Score: 40 Success Rate: 93. I want to create simple currency converter. coins_needed, W. Ollivander's Inventory. Here are the schema details as below. TotalAmount else 0 end) AS [Dispenser Sales], SUM(case when c. Feel free to ask doubts in the comment section. 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. I need to get the SQL query to find the total profit/loss in each of the stocks. Navigation Menu Finding the percentage: MySolution: Lists: MySolution: Tuples: MySolution: Strings. catid = 1 then o. Advanced Select Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. What is a function in SQL, and why use functions? This article contains 35 data analyst sql interview questions. 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. Writing a SQL select statement to calculate commission paid to sales employees fro the month of December. Binary Tree Nodes. 40%. How could I do that within my SQL query? TIA. OrderDate) as [Sales Month], SUM(case when c. I've used an inner join, but you might want to look into left & right joins. 49%. 50%. This is the best place to expand your knowledge and get prepared for your next interview. It defines the window or set of rows over which the function operates. Step 2: then, we created a dictionary to store the name and marks of students. Your given an . Viewed 9k times SQL query for overview of purchased products per user. sql │ ├── Reformat department table. The clause works similarly to the . Facebook. SQL TABLE Challenges-1: Write an SQL query to find the best seller by total sales price. Practice & prepare SQL interview questions . Reload to refresh your session. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. 02%. 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. Grade >7 THEN S. 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 . MARKS BETWEEN G. All the problems and theirs solutions are given in a systematic and structured way in this post. com. Some skills like subqueries, complex join, etc were tested but way more complicated things were on the test. Name ELSE NULL END) AS NAME, G. 1. Host and manage packages Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Browse other questions tagged . How to access and use 2d-arrays. Use SUM(amount) OVER (PARTITION BY MONTH(sale_date)) combined with LAG. 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. Draw The Triangle 2. NAME, S. Challenges. 00), (70000,1000000, 33. 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. Area 3 - SQL Optimization and Performance HackerRank, or even a whiteboard session. I provided my own insights and unique solutions as much as I can. Weather Observation Station 18. The Overflow Blog “Data is the key”: Twilio’s Head Identify sales where the previous sale amount was higher than the current sale. 50), (48000,70000 , 30. Again, here’s a video walkthrough of this solution. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. 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. sql │ ├── Sales Analysis 2. In this repo, you can find solutions to SQL This repository contains all 58 solutions to the HackerRank SQL Practice Questions. There are many repos on the internet for the solutions of these questions. Each question covers a different aspect of SQL, providing a comprehensive learning experience. - 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. 66%. Click here to see more codes for NodeMCU ESP8266 and similar Family. sql; oracle-database; or ask your own question. For each employee, determine the number of hours worked during the weekends. w3resource. Start. Problem 1. We use cookies to The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. 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. - Sukanya807/HackerRank_SQL_Advanced_Joins HackerRank SQL Problems and Solutions —2. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. 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. 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. 65%. 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. txt. More. Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. In. Easy. Packages. product_family: total: valid_solds_percentage: CONSUMABLE: 103: 100: GADGET: 86: 76. These concepts introduce more complex features and functionalities of SQL. So, make sure you select "MySQL" on HackerRank while answering questions. We’ll also provide some tips on Inside you will find the solutions to all HackerRank SQL Questions. Teams. Please read our cookie policy for more Intermediate. Easy Problem Solving (Basic) Max Score: 20 Success Rate: 93. Print Prime Numbers. 25 Advanced SQL Interview Questions Hopefully that gives you enough pointers to formulate the SQL yourself. 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. One frequent question is to find the second highest salary from an employee table. Contribute to karunakaran186/Sql-intermediate-hackerrank-solutions development by creating an account on GitHub. It has the following columns: date – The date of sale. Basic Select. with columns , , Inside you will find the solutions to all HackerRank SQL Questions. total_price) / (SELECT SUM(total_price) FROM Sales)) * 100 AS revenue_percentage FROM Sales s JOIN Products p ON s. vfohsv gwyby usyj gxupb zyz zvh rdjb puej kckvq vbwp