Sales percent hackerrank sql question oracle. 40 Top Intermediate SQL Interview Questions and Answers.

Sales percent hackerrank sql question oracle This is the best place to expand your knowledge and get prepared for your next interview. showing 0 for the months with no sales. Table of Contents. Both of these types of assessments are supported via integration with Oracle Recruiting. 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;. In. Readme Activity. - mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Products Sales Per City(Solution-1,2). If your percentages are easily derived from data in your system, consider not storing them in a column but rather defining the calculating in a VIEW and reading from that. Status. The Overflow Blog Failing fast at scale: Rapid prototyping at Intuit Product sales by month - SQL. To answer the SQL questions, follow these steps: Read the question and instructions carefully. OrderDate) as [Sales Year], MONTH(o. How to Do a SUM and Group Data by Each Month. What are advantages of Oracle 18c? Answer I have a table with userId and username. 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. 50 48001 | 70000 | FLOAT or REAL can be used for arbitrary precision. Tips for Passing the HackerRank SQL Advanced Certification. Binary Tree Nodes. Facebook. Date AS aDate, MAX(b. Close_Price - y. exchange_rate) and calculates a row number for each row. Is there a way we can do this in SQL? In this video we will discuss an SQL interview question that was asked in meesho's HackerRank online test. I have one table of data with revenue in multiple currencies (let's call this one TRANSACTION_TABLE, with columns as such:. Learn about the eight interview questions usually asked for SQL; Additionally, there were a few logical reasoning questions and some coding-related ones. Improve this answer. About. Google SQL Interview Question:https://youtu. Now i was lucky enough to get a great answer however in my question i did not take into account that my rows could contain zero. Reload to refresh your session. Each salesperson earns a fixed base salary and a percentage of commission on their total deals. We use cookies to ensure When I execute your sql in livesql. 95; – Use platforms like LeetCode or 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. Subdomains. python3 hackerrank-python hackerrank-solutions hackerrank-algorithms-solutions sql-solution hackerrank-sql-solutions. jarlh jarlh. 15 Days of Learning SQL | Hard | HackerRank. The above sentence and the corresponding part of the script turned out to be complete rubbish. I have a SQL table with columns (TRANSACTION_ID, STOCK_NAME, STOCK_ID, VALUE, TYPE). This competency area includes the usage of Exception Handling, Procedures, and Functions, as well as a good understanding of Type and Package. FROM sales. 2. Write a query to find the node type of Binary Tree orde HackerRank SQL Problems and Solutions —2. . So in the array, we have two 1’s which form one pair of same colored socks and two 2’s which again makes This article provides you with an example to show how each database system handles the floating-point values. Open main menu. Solve Challenge. SELECT YEAR(o. 33. You can't reference total in your order statement due to the way SQL calculates the dataset. g. com. sql; oracle-database; oracle-sqldeveloper; or ask your own question. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. 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 Saved searches Use saved searches to filter your results more quickly Feature: Oracle Recruiting Cloud: View the Full list of HRW Tests: Invite candidates to a specific test: Cancel / Reinvite an invite: Status update from invite to completion SQL Interview Questions for Cognizant : I have studied lot of websites and data related to the SQL interview questions for Cognizant technologies and different companies. GRADE, S. 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 Before going to the next section, I’d like to suggest the article How to Calculate the Difference Between Two Rows in SQL, which goes deeper into the calculation of differences using LAG() and LEAD(). Host and manage packages Please be sure to answer the question. Understanding how to write efficient queries, create PL/SQL procedures, and integrate Java with Oracle databases is essential. Hackerrank SQL problem to solve in Oracle's SQL version. I want to assign random numbers to each row based on percent. The challenge will consist of answering 7 multiple choice questions in a duration of 30 minutes. 28571% 3 10. So, without wasting any time, let’s jump to the solutions. 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. This guide will cover key concepts with sample Oracle coding questions and answers and useful tips for success. Advanced Join. 45% rows should have 7 assigned and the remaining 5% rows should have 8 assigned. Mar 31, 2024. 44. In neither of the solutions do you guarantee to generate the results with the correct ordering. Each solution includes a brief explanation of the problem and That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. sql; oracle-database; oracle10g; greatest-n Oracle interview details: 10,047 interview questions and 9,232 interview reviews posted anonymously by Oracle interview candidates. 0 forks. While there is nothing technically wrong with it, it's like speaking English (oracle) with a strong French (Microsoft) accent. Updated Mar 8, 2020; Aman9026 / HackerRank. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Adi The PM's Substack. : MinLimit| MaxLimit| TaxRate 0 | 14000 | 10. My Coding Question: Unique Binary Search Trees; Friend's Coding Question: Minimum One-Bit Operations to Make Integers Zero; Over 100 students were selected, including master's students, to proceed to the next round. – Nomad. Since it is placed after 'Cal', it will match any string that starts with 'Cal'. 7k 8 8 gold Browse other questions tagged . TRANSACTION_NAME TRANSACTION_VALUE CURRENCY , and another table with exchange rates (EXCHANGE_RATE) with columns as such:FROM_CURRENCY (e. Currently, HackerRank supports Microsoft SQL, MySQL, Oracle, and DB2 databases. [An editor is available at the bottom of the page to write and execute the scripts. The second query uses a redundant select distinct. Provide details and share your research! SQL Query to show highest sales in a City for EACH State. My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms. Finally, it calculates the average product rating (rounded to 2 decimal places with the Inside you will find the solutions to all HackerRank SQL Questions. SQL Question 2: Sales Team Compensation. SELECT product_id, SUM(total_amount) / (SELECT SUM(total_amount) FROM sales) * 100 AS percentage_contribution. From the following tables write a SQL query to find the salesperson and customer who reside in the same city. MONTH NUMBER_SALE January 2 February 2 March 1 June 1 Welcome to our YouTube channel, your gateway to the fascinating world of Data Roles Interview Preparation! In this video we have solved a Sql Question from H As part of a cryptocurrency trade monitoring platform create a query to return a list of suspicious transactions. Due to precedence of SQL statements it will be the same. I can list them all but not just the ones I want, might not understand Rank(), ROW_NUMBER(), FIRST_VALUE use in Oracle. Oracle SQL to calculate percentage. JDBC basic example For Select Query For explanation watch video: For Creating Table:: SQL> create table emp60(srno int,fname varchar2(10)); Table created. No description, website, or topics provided. SQL: Find percentage of tasks completed based on the status. 00 34. catid = 2 then o. Once candidates complete the questions, they can submit the assessment. PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries. This subreddit is for asking questions or discussing current issues regarding immigrating to Canada. Tags analytic view, SH, sales history; Area SQL General; Contributor William Endress (Oracle) Browse other questions tagged . Aggregation. Code My Solutions to HackerRank Practice Questions on SQL, Python, and Algorithms. Challenges-1: Write an SQL query to find the best seller by total sales price. Finding the city with the max population. 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. Click here to see more codes for NodeMCU ESP8266 and similar Family. For SQL Server: SELECT (CASE WHEN G. MARKS BETWEEN G. 47. Which leads me to believe it is the opposite. com (19c), it throws this error: ORA-20001: Query must begin with SELECT or WITH – Patrick Bacon Commented Apr 23, 2020 at 15:31 select to_char(sldate,'Month') Month, count(to_char(sldate,'Month')) NUMBER_SALE from sale group by (to_char(sldate,'Month')) order by NUMBER_SALE desc Displayed the month of sale and number of sales done in that month sorted in descending order of sales. Covered in subquery practice exercises 10, 11, 12, and 13. Clients (found in DWCUST) live in Cities and States. Share this post. Sep 16, 2024. Click EXECUTE & TEST. Oracle Hack Day Challenge 2022. 17. hn IS NOT NULL THEN 1 ELSE 0 END) AS b, SUM(CASE WHEN y. How to Find Gaps in Dates with SQL Pattern Matching. Oracle SQL specifically. Basic Select. 21. So, buckle up and get ready to dive deep into the 22 questions that'll shape your Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Close_Price) / x. MySQL. Tutorial Creating an Analytic View for the Sales History (SH) Sample Schema; Description This tutorial will create an analytic view and supporting objects using data in the Sales History (SH) sample schema. pdf), Text File (. By detailing sales figures per city and This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Sep 26, 2024. I don't know if you want a conclusion of "15/20ths (75%) of biscuits were returned" in which case make the returns a percentage of the sales, not a percentage of the sales+returns Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. The examples use the built-in sales history schema so there are no setup s Tutorial. The table represents the investment in different stocks as transactions. Basic In the array, lets suppose we have arr= [1,1,2,2,3]; (array might not always be sorted). sqlPractice / Meesho_HackerRank_SQL_Interview_Question. OrderDate) as [Sales Month], SUM(case when c. I am guessing that all decent databases would This document walks through different use cases supported by the HackerRank—Oracle Recruiting Cloud (ORC) Integration and covers FAQs. txt Will be adding Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Ask Question Asked 3 years, 11 months ago. Problem; Solution – Japanese Cities’ Names in SQL; Problem. Some skills like subqueries, complex join, etc were tested but way more complicated things were on the test. Does anyone know a SQL query to This current query above shows the TOTAL (SUM) amount of sales made (sale = qty * saleprice) for each city while also showing the state it resides in. HackerRank SQL Solutions. I've been doing SQL for several decades. OUTPUT. Basic Join. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution sql hackerrank oracle-sql hackerrank-sql-solutions. Exactly. Date) AS aPrevDate FROM SomeTable a INNER 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. How could I do that within my SQL query? TIA. 40 Top Intermediate SQL Interview Questions and Answers. It offers a quick overview of the process of creating an analytic view. Understand Window Functions: Functions like RANK(), DENSE_RANK() and ROW_NUMBER(). But there is something is not fair. Your three queries are different semantically, as written with the provided table definitions. This is one question solution to the HackerRank SQL Basic Certification problem and this is shared for your increasing knowledge. Within the oracle world, Instead of mixed-case ("CamelCase") we tend to 500 Oracle interview questions and answers - Oracle FAQ PDF. SELECT * FROM Sales ID Item Amount 5 IS1 10. product_id GROUP BY p. Click SAVE. Teams. Notes. What is a function in SQL, and why use functions? Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Easy. You signed out in another tab or window. Click here to see more codes for Raspberry Pi 3 and similar Family. txt I have a table with 3 rows contain values : Row1 : 5 Row2 : 8 Row3 : 9 I wish to calculate the percentage of increase or decrease of : Row2 compared to Row1 , Row3 to Row2 so i would have this ta I need to build a query with 4 columns (sql 2005). It then groups the result by month (using the function in PostgreSQL to isolate the month from the ), and product. category ORDER BY revenue_percentage DESC It is a preferred choice for many top companies such as Oracle, Packages. Also, if they beat their quota, any sales after List Of Top Oracle Interview Questions. From the following table, write a SQL query to find those employees who receive a higher salary than the employee with ID 163. In the coding round, you may face questions that test your knowledge of SQL, PL/SQL, and Java. Sales are recorded in DWSALE and hold the sales info. SAP SQL questions. Key Competencies: Company Name: Oracle. By detailing sales figures per city and identifying customers who spent 25% or less than select stato, count(1) stato_count, ratio_to_report(count(1)) over() * 100 stato_percent from log_bonifica group by stato so you don't need to calculate total row count Challenges | Medium | HackerRank Julia asked her students to create some coding challenges. I do not own or make these questions. Correlated subqueries: Create subqueries that reference columns from the outer query, enabling context-aware filtering. Ask questions, find answers and collaborate at work with Stack Overflow for Teams. hn IS NULL THEN 1 You signed in with 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 But be careful how you treat quantities; i've guess that "sell 20 biscuits, return 15 biscuits" is a total of 35 product movements, 15 of which are returns. You are given two tables: Customers and O Click here to see solutions for all Machine Learning Coursera Assignments. Solved. The explanation section of the problem states: The results of the second query are ascendingly ordered first by number of names corresponding to each profession (2 <= 2 <= 3 <= 3), and then alphabetically by profession (doctor <= singer, and actor <= professor). * FROM tbProduct a INNER JOIN ( SELECT Category, MAX(Price) maxPrice FROM tbProduct GROUP BY Category ) b ON a. For example, if there are three records in the table with Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. In an Amazon SQL interview, candidates can expect a range of questions that test their SQL knowledge and problem-solving skills. Problem 1. Coding Round : The online assessment contained a few aptitude questions, 2 easy DSA questions, and one REST-API-related question on the hackerrank platform. Blame. Here's their snippet that won't seem to run for me in Chrome. It was 2 questions in a one-hour time slot that were actually pretty complicated. txt) or read online for free. Julia conducted a 15 days of learning SQL contest. All questions Oracle Cloud Migration: Department of Education: 3: Trust & Safety Operations: Round your answer to a percentage (i. Name ELSE NULL END) AS NAME, G. Now, I need to find the percentage of sales and percentage of return using following The thing that bothers me with HackerRank SQL questions is that it doesn't show the SQL queries output properly, like with a table, with the column names etc. If we want to find the total count of sales for each month (instead of the total sales amount), replace the 19. Hackerrank. The Merit Rewards SQL problem is a question presented in the HackerRank Basic SQL Certification exam. Write a query to print the hacker_id, name, and the total number of challenges created by each student. Grade >7 THEN S. So the report should look something like this: Category | Month | Rev. Overall, the MCQs were relatively easy. 0 stars. dataelephant dataelephant. 22. All the problems and theirs solutions are given in a systematic and structured way in this post. Suspicious transactions are defined as: If you want just the customer with most orders, you have to limit the number of records to the first one. Surprisingly it does seem to understand PL/SQL; and even more surprisingly it handles the set This repository contains all solutions and "thought process" to Hackerrank's SQL challenges. These questions are more suited to SQL practitioners with a few years of experience. sql; oracle-database; group-by; or ask your own question. Ask Question Asked 7 years, 5 months ago. 00 Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. The issue is that the tax rate is different for each bracket e. Pivot the Occupation column so the Name of each person in OCCUPATIONS is displayed underneath their respective Occupation. This is hard SQL question asked in DELL and MICROSOFT interview published at stratascratch. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Oracle SQL questions. Q #1) What is Oracle and what are its different editions? Answer: Oracle is one of the popular databases provided by Oracle Corporation, which works on relational management First, there's no point in writing mixed-case code in oracle. Follow answered Nov 9, 2017 at 7:52. The percentage sign % is a wildcard in SQL that matches any sequence of characters. FROM sales_amount s: The sales_amount table is aliased as s. Advanced Select. Report repository The test was harder than some ‘intermediate’ level questions on hackerrank. I have an SQLite database with the following fields for example: date (yyyymmdd fomrat) total (0. ANALYZE command is used to perform You may read our SQL Subqueries tutorial before solving the following exercises. where LAT_N is the northern latitude and LONG_W is the western longitude. Is there a way to get percentage for earch field. Contribute to aghodke24/HackerRank-Sql-Advanced-questions development by creating an account on GitHub. The output is in a "code-ish" format. " Learn more SELECT (1 - COUNT(end_dt) * 1. Make analyzing financial data much easier! The sales department in China is not happy with December 2020’s performance, so they want to analyze this month in detail to discover where there was a drop in transactions. 0 bit converts the integer result of COUNT to a non-integer value so make the division non-integer too. Sales and business development representative (55) Project manager (54) Business development representative (bdr) (52) Principal consultant (51) Six examples will lead you through various SQL practices. x), the exchange rate (e. Unless quantity is declared as NOT NULL, then it can return matching records where the quantity is NULL. Guestbook. Skills. 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. TotalAmount else 0 end) AS [SQL] Using Oracle in HackerRank question, largest and smallest city name. Alternative Queries. price = b. The questions row where simple: In this tutorial, we are going to solve the finding percentage problem of hacker rank. Follow asked Jul 20, 2017 at 17:49. If your percentages are calculated to the nearest whole percent, INTEGER is fine. I need to get the SQL query to find the total date – The date of sale. 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. Answer: This query performs a join operation between the . 0 · Database Documentation · Ask Tom · Dev Gym For the date 2023–01–01, the day difference is 1 day. 50 14001 | 48000 | 17. I accidently titled MySQL thanks for the catch and downvote haha. ) Share. 00 2 IS3 7. 00 DESIRED OUTPUT ID Amount Percentage 5 12. But I guess that you'll have less questions available I have previously asked the following question: Calculating percentage within the SQL. Practice Interview Questions Learn SQL. After submission, they see a success message for a few seconds before being redirected back to their ORC job You can't refer to column aliases in the same level of the query (except in the order by clause), so you have to either repeat the original expression as in @juergend's answer, or use an inline view:SELECT a, b, c, a/c AS d FROM ( SELECT COUNT(*) AS a, SUM(CASE WHEN y. Question, I have table like: PID Category Year 1 AAA 2011 2 AAA 2012 3 BBB 2011 4 CCC 2010 5 CCC 2011 6 CCC 2012 I need to display Output as: Subtotal SQL interview questions have been a critical component of technical hiring for decades. 0. However, if your SQL Welcome to our guide for aspiring TikTok Data Scientists! Let me spill the beans – having navigated the intricate data landscapes at FAANG and co-authored a book with my partner-in-crime, a seasoned data aficionado from the tech scene, I can vouch for the hurdles that lie ahead. Use count, sum and case expressions, together with basic arithmetic operators +,/,*. 0. 108 lines (96 loc) · 1. Modified 5 years, 9 months ago. How to Apply? Applications will be reviewed, and eligible candidates will Try this one if you want to get the whole row, (supports most RDBMS)SELECT a. Watchers. Viewed 27k times I'm running in Oracle SQL. 1 watching. Resources. Print the average of the marks array for the student name provided, showing 2 Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. We use cookies to ensure you have You may read our SQL Joins, SQL Left Join, SQL Right Join, tutorial before solving the following exercises. Email. The first query is different from the other two, logically. Modified 11 months ago. 00 Example 35. Get most sold product for each country from NORTHWIND database. To practice this SQL translation skill can also check out the 60+ question on DataLemur This blog covers the 20 most commonly asked **advanced** SQL questions with detailed answers to help you ace the interview. It doesn't go through rigorous checks. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution PL/SQL is an extension of the SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries. Copy link. Tuning SQL queries in Oracle involves several steps: Analyze the query execution plan: Use EXPLAIN PLAN and Oracle's SQL*Plus You signed in with another tab or window. oracle. Solutions to SQL Questions - HackerRank . For example, in between the Top 20 out of 10 People is 2. This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Includes asynchronous coding tests, code review questions, MCQs and more; Includes real-world, project-based questions; HackerRank Interviews Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. HackerRank SQL Question 16 codes have been tested against HackerRank’s MySQL Interface and might not work in other interfaces such as that of Oracle or DB2. Using the formula in the hyperlink, the query should be: SELECT x. product_id = p. 00 3 IS1 10. 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. 20 for 20%, 50 for 50) with no decimals Tricky Oracle SQL questions are challenging and help you test whether a candidate is able to think methodically, quickly, and creatively. I want to calculate the month-by-month percent change, starting in August. Close_Price)) * 100) AS '% Change' FROM ( SELECT a. It's frustrating. It will be updated everyday. Try Teams for free Explore Teams. This Year | Rev. Order total sales by month. sub_cat_code; total_amount; The total_amount contain sometimes positive and sometimes negative value. Return distributor ID , If there is a tie, report them all. You switched accounts on another tab or window. You signed in with another tab or window. Key Features Not enough rep to write a comment, but I believe the percent change formula in user @Kickstart's accepted answer is incorrect. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Position: Application Developer. Column1: Product Column2: Units sold Column3: Growth from previous month (in %) Column4: Growth from same month last year (in %) In my table the Post displaying HackerRank sql problem solving questions and solution. 00 5 IS2 2. 00 9 IS5 6. Basic. What did they cover? Also for advice on the topic, I think most interview questions have an expected level where This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. For specified precision, use NUMERIC. This is too long for a comment. 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. Calculating Sales Count. category = b. Close_Price, (((x. be/35gj Write a SQL query to determine the average monthly rating for each product. Hope you ace all the exercises that await you there! Tags @Digitalsa1nt (100 * 2) / 4 = 50, (2/4) * 100 = 50 as long as the enumerator is is the part being multiplied. notes, I've given the tables an alias to ensure you don't get conflicts between the column names. Modified 10 years, 5 months ago. Click Practice SQL questions to enhance our skills in database querying and (SELECT SUM(total_price) FROM Sales)) * 100 AS revenue_percentage FROM Sales s JOIN Products p ON s. Date, x. 1, running Oracle Database 19c EE Extreme Perf - 19. Add this topic to your repo To associate your repository with the hackerrank-sql-solutions-oracle topic, visit your repo's landing page and select "manage topics. Query the names of all the Japanese cities in the CITY HackerRank integrates with Oracle Recruiting Cloud (ORC) for Tests and Interviews to facilitate an easy and seamless hiring experience. How to have a percentage in Oracle SQL show decimals? Ask Question Asked 11 years, 1 month ago. sql. pdf - Free download as PDF File (. COUNT(*) gives a total count of people in the table SUM(column) gives a sum of 1 in given column case expressions make possible to implement more complex conditions; The common pattern is X / COUNT(*) * 100 which is used to calculate a percent of given value ( val / total * I Have a table of Monthly Sales Quarter Month Monthly Sales 1 Jan 586 1 Feb 204 1 Mar 465 2 Apr 684 2 May 756 2 Jun 97 Now I want a result a below HackerRank’s Developer Skills Platform supports two types of assessments. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Floating Point Values Sample. Copy path. The provided code stub is read in a dictionary containing key/value pairs of name:[Marks] for a list of students. For example, if there are three records in the table with CITY values 'New York', 'New York', 'Bengalaru', there are 2 different city SQL Interview Questions and Answers for Experienced Professionals [3 to 5 Years Experience] 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 WHERE sales_percentile >= 0. python3 hackerrank-python hackerrank-solutions hackerrank-algorithms-solutions sql Browse other questions tagged . Articles Works Shiny Snippets Resume About Contact. HackerRank Tests. I've not used SQLfiddle much so I wasn't able to setup a test schema for this (yet). Describe the Process of Tuning SQL Queries for Performance in Oracle. and tables using the field. For that, you have to tell what DBMS you use, since it varies with the DBMS the way you limit the query to the first one (ex: mysql is LIMIT 1, sql-server is TOP 1): In Oracle, you can do: The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. Viewed 29k times Browse other questions tagged . TotalAmount else 0 end) AS [Dispenser Sales], SUM(case when c. I have a table with user incomes and i wish to calculate their income tax percentage based on that income. 4. Hello coders, today we are going to solve Japanese Cities’ Names HackerRank Solution in SQL. How to calculate percentage in oracle sql. 2025 Oracle · Live SQL 24. 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 You have to join the other tables involved (based on the schema shown) and use conditional aggregation, to get a split by category id. This table contains sales data, including Given a table sales, with item selled in two different currencies how to get the exchange in EUR Sales Table: item currency Amount A USD 1000 A EUR 833. 00 format) There is typically 2 months of records in the database. category AND a. sql; oracle-database; special-characters; or ask your own question. JPY) TO_CURRENCY Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. The start date of the contest was March 01, 2016 and the end I facing an issue of a way of calculating the total of the produced Amount column, so I can use it to calculate the (user sales amount/total users sales amount) percentage ratio. See more This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. sql; postgresql; Share. What is latest Version of Oracle? Answer: Oracle 18c is latest version of oracle which is worlds first autonomous database. More. 33 B JPY 50 B EUR 200 C EUR 10 C CAD 2 Help Center Detailed answers to any questions you might have Oracle SQL: Create a new field based on multiplying 2 columns. Calculating Month-to-Month and Quarter-to-Quarter Differences. It's all about translating the word problem into SQL, which sounds easy, but the problems are written quite weirdly on HackerRank. The purpose of this document is to provide a step-by-step guide for setting up the Oracle Recruiting Cloud (ORC) - HackerRank Integration. These questions often involve topics such as data manipulation, query optimization, and database design. catid = 1 then o. Unsolved. 65%. 83 KB main. Sql. Star 12. Go to the editor] . Top. The following example shows how different database systems handle the data. I need the query to show the cities with the HIGHEST sales for EACH of their respective The subquery selects the sales_date (s. MARKS FROM STUDENTS S JOIN GRADES G ON S. 50%. To succeed, candidates should be well-versed in SQL fundamentals and prepared to solve complex scenarios with confidence. The STATION table is described as follows:. product_id – The ID of the product sold. maxPrice Here is the SELECT statement: SELECT ROUND(ISNULL(SUM(Price),0),2) As TotalPrice FROM Inventory WHERE (DateAdded BETWEEN @StartDate AND @EndDate) Any ideas of why it's not rounding to two decimal Oracle asked these 10 SQL interview questions in recent Data Analyst, Data Science, and Data Engineering job interviews! Oracle SQL Interview Question. Here’s the data, too: date product_id you can get more of the same in our SQL JOINS course or the article about the SQL JOIN interview questions. e. I have a query which can select TOP 20 percent of TOP highest with GrandTotal. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. I have a table in MS SQL DB which contains transactions of any company, there are two columns . Select 40 most recent sales from each neighborhood group MS Access SQL. Note: Your query should pass through sample input and output test cases. SQL Query to get the total sales per seller by month. Eg: I want to assign 6, 7, 8 to each row. We then apply SUM() to calculate the total sales for each month, and group the results by year and month. File metadata and ANSI SQL, supported by newer Oracle versions. MIN_MARK and G. I've used an inner join, but you might want to look into left & right joins. Covered in subquery practice exercises 10 You can toss a subquery in your WHERE clause to find customers that have had sales today:. But 50% of the records should have 6 assigned. This competency area I have the following SQL statement that shows the total sales amount for customers in cities who have done at least 2 orders. Explanation: In this query, we use the YEAR() and MONTH() functions to extract the year and month from the Order_date column. (I don't know if it is in 10g. Hopefully that gives you enough pointers to formulate the SQL yourself. Published on November 5, 2020. This will give the percentage of people who have a non-N/A value for the allergy column (and will ignore people who have an unknown [NULL] value for allergy): SELECT 100 * COUNT( DECODE( allergy, 'N/A', NULL, allergy ) ) / COUNT( allergy ) AS percentage_with_allergy FROM table_name To include NULL values as if they were N/A then: Meesho_HackerRank_SQL_Interview_Question. In the previous section, we couldn’t calculate a consistent value for the YOY Difference for 2021 You signed in with another tab or window. GROUP BY product_id; 18. Hard. amount – The amount of that product sold on a particular day. MySQL solution-select (salary * months)as earnings ,count(*) from employee group by 1 order by earnings desc limit 1; Say for example you had sales analytics data from ServiceNow's CRM (customer-relationship management) tool. Improve this question. Write an Oracle SQL query to find the names of employees In this video, you will be solving a SQL Interview question that has been asked in HackerRank assessment of Meesho. Breadcrumbs. Latest commit History History. 0 / COUNT(*)) * 100 AS Percent FROM packages The * 1. 500 Oracle Interview Questions and answers. Where positive values indicates the sale and negative value indicates Returns. 💡 You can get practice questions with hands-on coding on Interviews can be hands-on, with problems to solve on CoderPad, HackerRank, or even a You signed in with another tab or window. 1. Disclaimer: Please note the information provided by our members is not (and should not) be interpreted as legal advice. Learn how to use them effectively with the OVER I'm very curious on what these hackerrack questions are. Medium. 2 Questions are asked, as of now 2 questions will be asked from these questions, provided the solution also: Programs / Questions Business Expansion(Solution-1,2,3). MAX_MARK ORDER BY Level up your coding skills and quickly land a job. Write your SQL query in the code editor. Forks. Hot Network Questions Join over 11 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. SELECT month, sales, AVG(sales) OVER (ORDER BY month ROWS BETWEEN 2 PRECEDING AND CURRENT ROW) AS three_month_avg FROM sales_data; By specifying ROWS BETWEEN 2 PRECEDING AND SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Viewed 2k times How to handle/use special characters like percent (%) and ampersand (&) in Oracle SQL queries. Key Features. I also tried stratascratch and it's all good, everything is as you expect. Technical Interview : Round 1 Microsoft SQL; Oracle database; Answering SQL questions. Stars. hzu wnkcw hzbwpueu fhfk khfozyf sylrj lehf zrul amvt opjkfr