Best hackerrank sql questions. reducing the risk of SQL injection.

Best hackerrank sql questions Based on that alone, the question should be closed as unreproducible. We use cookies to ensure you have I learned a lot of SQL by trying to reply to SQL questions on Stackoverflow. Also, a full solution without the need to change modes was posted by @dougal_michael below, which uses the MIN() function instead. This is 100% a client-side problem in how the results are displayed. We use cookies to ensure you have the best Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. We use cookies to ensure you have the best Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Hackerrank's mysql version is old; too old to support CTEs. We use cookies to ensure you have the best I do have these 2 extra line SQL doesn't return extra lines. Basic Java Interview Questions. You are given two tables: Customers and O Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Hard SQL (Advanced) Max Score: 50 Success Rate: 78. SELECT authors. With its Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. 15%. Medium SQL (Basic) Max Score: 25 Success Rate: 98. As for hackerank and sql pad, they’re good at teaching sql but not sure about In this guide, we will walk through several SQL interview questions, divided by topic, to help you prepare for a variety of scenarios you might encounter. As part of their hiring process, JP Morgan uses Hackerrank as an assessment tool to evaluate the technical skills of potential candidates. SQL interviews can be tricky, but if you approach each question with structured steps, you But, in real life, a lot of SQL is about really understanding the business context behind a question and considering possible edge cases. About. We use cookies to ensure Names of columns in the City Table. A desktop application wouldn't allow mixing up UI elements like this. SQL Interview Tips. Medium. * Thus, if the submission has a difficult of D, and on the difficulty table, a HackerRank Prepare for you upcoming programming interview with HackerRank's Ultimate Interview Preparation Kit The maximum earnings value is 69952. What is HackerRank? Aptitude Questions; Logical Questions; Verbal Questions; Domain Questions Don’t settle Learn from the Best with PrepInsta Prime Subscription. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. It serves as a powerful tool for efficiently handling data whether retrieving specific data points, performing complex analysis, or modifying database structures. Home » Questions » Best hackerrank jp morgan questions JP Morgan is one of the leading investment banks in the world, and as such, it attracts top talent in the field of technology and finance. We use cookies to ensure you have SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. They asked some networking and C language based questions which I studied 6 years ago in Solutions to all the HackerRank SQL questions to help you reach the gold badge. using analytics to make data-driven product decisions. I had never been rejected in a final round of the interview process before. 95%. Conquer your next data ana HackerRank questions are too verbose and sometimes ask for weird output (like union of int id and string). Start with 20 Basic SQL Questions for Practice. Top Earners – HackerRank Solution; Weather Observation Station 2 – HackerRank Solution; Weather Observation Station 13 – HackerRank Solution The test was harder than some ‘intermediate’ level questions on hackerrank. Below are five examples of basic java problems. A favorite among coders of all types, HackerRank provides a comprehensive set of SQL challenges that are perfect for anyone looking to improve their coding skills for interviews. 97%. Write a SQL query to determine the average monthly rating for each product. View all skills. 🎥 Welcome to Day 6 of the SQL Interview Preparation Series! In this session, we’re exploring creativity and formatting in SQL. It was 2 questions in a one-hour time slot that were actually pretty complicated. Topics From software engineering to data analytics, HackerRank is one of the best platforms for practicing coding interview questions. SQL is a must-have skill in your toolkit. HackerRank offers an SQL certification that will test your knowledge of SQL and relational databases. These questions are simple in nature, testing only one concept. Practice, Practice, Practice, Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. The questions can be answered in 4 different types of SQL flavours and I decided to answer them using MySQL. SQL Interview Guide. Advanced Select. If you’re a data scientist, data engineer, or software engineer on the job market, the ability to demonstrate your skills in a database interview is critical to landing your next role. Status. Data Scientist. We use cookies to ensure you have Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. In this article, we cover 45+ 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. Advanced Join. * Key point to notice here is that the hackers who got a full score are those whose score matches the score associated with the difficulty of that submission. Top Competitors. We define an employee's total earnings to be their monthly worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. I have to keep track of row number of each Occupation for pivoting. The SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Reload to refresh your session. These questions cover various topics such as basic SQL queries, aggregate functions, joins, subqueries, and more. Subdomains. The only thing that changes is the join keyword. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. These problems are generated by HackerRank, but the solutions are provided by Niyander. Solved. 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. New Companies. Write an SQL query to fetch “FIRST_NAME” from the Worker table using the alias name <WORKER_NAME>. challenge_id from Submissions s INNER JOIN Challenges ch ON s. In a real life scenario where you needed to know the number of managers in the analytics department in order to This respository contains the solutions to the SQL questions on HackerRank based on Advanced Joins. Problem 1. The required query is: You signed in with another tab or window. The solutions cover a wide range of SQL challenges, from basic queries to more advanced concepts such as aggregations, joins, and subqueries. Welcome to HackerRank SQL (Advanced) Skills Certification Test. What is a function in SQL, and why use functions? The various MySQL certifications cover topics such as SQL, data modeling, database administration, connectors, APIs, schema objects, and transactions. 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 for programming interviews. But also more theoretical SQL questions around query optimization, database management, and database design. Reply More posts you may like. Users can select problems by We also curated a list of 150 company and industry specific SQL coding questions including top tech companies such as you then jump into SQL coding questions that challenge you and make sure you mastered those SQL fundamental concepts. A basic understanding and good practice of programming are needed to solve this section. Write a query to find the maximum total earnings for all Print the total number of challenges created by hackers. Unsolved. Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. sqlfiddle was also great for sharing proof of the solution and how it works. Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. Students contains two columns: ID and Name. score as _score, difficulty_level, s. and tables using the field. Basic to intermediate SQL topics 50 essential SQL questions Best for 1 month of prep time You ought to checkout this resource for you interviews. 82%. That’s where HackerRank comes in. Get a timer to track your progress and start practicing. Friends contains two columns: ID and Friend_ID (ID of the ONLY best friend). Longest Substring Without Repeating Characters; 3. The repository is organized as follows: Easy: Beginner-level SQL challenges. thank you so much! really helped. Then print these values as 2 space This is a new question Hackerrank has added for the advance level SQL certification. Solution output: The output snapshot shows the required data, with some of the data shown as NULL. Julia’s best friend got offered a higher salary than her at 12. Solving these questions will Top Competitors | Medium | HackerRank Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of This repository contains solutions to various SQL challenges from HackerRank. HackerRank’s SQL practice suite has hundreds of questions You see that the SQL join syntax is the same for INNER JOIN. In this article, I am going to share HackerRank SQL Solutions with you. As a popular tool for handling large volumes I recommend starting a hackerrank account ahead of time and doing some challenges on your own first to scratch the rust off if needed. hacker_id, s. To succeed in a database interview, you’ll need to stay up to date on the latest advancements 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) My answer in MySQL. 83%. It then groups the result by month (using the function in PostgreSQL to isolate the month from the ), and product. Best way to automatically pull data from an API everyday The Ugly. For example, if there are three records in the table with CITY values 'New York', 'New York', 'Bengalaru', there are 2 different city You are given three tables: Students, Friends and Packages. Skills: PLSQl, loop statements, control structures, using explicit cursors Insights — It My solutions to SQL questions from HackerRank. 85%. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. 101 Practice SQL Questions: Basic to Advanced. Expect questions of a medium Leetcode difficulty level. - vishnu-t-r/sql_solved_questions After the initial screening, you’ll be asked to complete a HackerRank take-home assignment. Write a query to output the names of those students whose best friends got offered a higher Database interview questions have been a critical component of technical hiring for decades. Besides solving the earlier SQL interview questions, you should also solve the 200+ SQL coding questions which come from companies Data engineer roles will get asked query questions. hacker_id, name ) select hackerid, name, cnt from comp where hackerid not in (select hackerid from comp where cnt in Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Manish Agarwal Ex- Accenture Java, Python, DSA (All Languages), Competitive Coding (All Languages), TCS, Infosys, Wipro, Amazon, DBMS, SQL and others. challenge_id) as cnt from ( Select s. Easy. They are the same command. Binary Tree Nodes. 1. Many Meta data scientist roles are aligned with analytics, e. Platform Help | Execution Environment | FAQ. hacker_id group by c. It took me a bit more than two weeks (on and off between work, 16 SQL Interview Questions for Business Analysts — SQL interview questions tailored for analysts. For those looking to become truly career-ready as data analysts, data engineers, or data scientists, a comprehensive bootcamp like CCS Learning Academy’s Data Analytics & Engineering Bootcamp is highly recommended. reducing the risk of SQL injection. . Share. Write a query to list the contestants ranked in the top 3 for each Why this video is 7. 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. 12; HackerRank SQL Problems and Solutions — 1. Step 3: Video Interviews Query all columns for every row in a table. These are the books without the adaptation. HackerRank offers a variety of SQL questions that cover different topics and levels of difficulty, from basic to advanced. tried this in oracle: with comp as ( select c. We use cookies to ensure SESSION, COOKIE functionalities 5. We use cookies to ensure you have the best Tailor questions to the role at hand. I found one annoying thing is that some coding interviews habe really verbose questions compare to leetcode questions. After a slow start, Swiggy snowballed into an unstoppable force that is now changing the way India eats. This platform offers coding questions ranging from Top Earners. g. So, a good question to ask is: “Suppose you notice your scrums are turning unproductive. Google Advanced SQL Interview Question Walkthrough. Additionally, you will learn CTEs by using this course. Easy SQL (Basic) Max Score: 10 Success Rate: 95. However, recruiters are looking for skilled and knowledgeable SQL developers and therefore, it is imperative to prepare SQL interview questions and answers well before you appear for your SQL interview. HackerRank changed the default sql_mode behavior to only_full_group_by at some point after I posted this. We use cookies to ensure you have the best This repository contains solutions to various SQL challenges from HackerRank. 1) Revising ALL Problem: Query all columns (attributes) for every row in the CITY table. hacker_id=h. The only employee with earnings 69952 is Kimberly, so we print the maximum earnings value (69952) and a count of the number of employees who have earned 69952 Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. These questions often involve topics such as data manipulation, query optimization, and database design. Weather Observation Station 18. hacker_id, COUNT(DISTINCT j. Answer: This query performs a join operation between the . Note: SQL accepts both LEFT JOIN and LEFT OUTER JOIN. We use cookies to ensure you have Contribute to cholu6768/SQL-Hackerrank-Practice-Questions development by creating an account on GitHub. 65%. Current projects at work require more SQL skills, so I took the time to brush up my SQL knowledge using the HackerRank coding challenges platform. Two Sum; 2. No. Instructions. The best way to prepare for the SQL interview is to practice, practice, practice. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Hey Everyone! This was not sent to your email, due to the length Welcome to the HackerRank SQL Challenges Solutions repository! This repository contains my solutions to all the HackerRank SQL Practice Questions. The questions are divided into 6 types: So far I have answered 45 out of 58 questions. SQL Scenario-Based Interview Questions: Data Querying. Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who achieved full scores for more than one challenge. We use cookies to ensure For most people and projects I think doing the project will have a basically 0 impact on decision to consider you at a place like that and so if you can get the interview the thing to prep is coding + domain questions. HackerRank is one of the best online platforms for learning and practicing coding, especially for SQL. 8 Common Entry Level SQL Developer Interview Questions — great for beginners. Edits: Updated with the sql_mode='' based on @jakab922's comment. The solutions cover a wide range of SQL challenges, Hackerrank is a great platform to practice SQL queries. I had technical interview ask platform specific questions which feels like going through a certification. I'm rejected in the final interview round of VmWare. Problem statement: From my experience, understanding the problem statement on HackerRank takes up to 75% of the time allotted for solving a medium- to hard-level problem. It covers topics such as basic SQL queries, joins, aggregations, and window functions. I'd skip anything that is really repetitive (just a bunch of different WHERE or HAVING filters etc) or super obscure (funny INSERTs or questions I've been doing SQL for several decades. We define an employee’s total earnings to be their monthly salary x months worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. SQL, or Structured Query Language, is the standard language for managing and manipulating relational databases such as MySQL, Oracle, and PostgreSQL. We use cookies to ensure you have the best Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. These top 30 SQL interview questions and answers provide a solid foundation to prepare for the data roles of the future. Finally, it calculates the average product rating (rounded to 2 decimal places with the Home » Questions » Best snowflake hackerrank questions Snowflake is a cloud-based data platform that offers a wide range of solutions for data warehousing, data lakes, and data engineering. Contribute to devika-be/HackerRank-SQL development by creating an account on GitHub. Solution: select * from CITY 2) Select by ID Problem: Query all columns Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. Once you reach the interview stage again for most normal projects they aren’t going to really impact the decision made. 50%. So, let’s dive into some of the top Hackerrank Amazon questions! See these hackerrank amazon questions. 74%. View community ranking In the Top 1% of largest communities on Reddit. Top Earners: SQL: 9: Weather Observation Station 2: SQL: 10: Weather Observation Station 13: Are you preparing for a SQL interview? SQL is a standard database language used for accessing and manipulating data in databases. Basic Join. It includes solutions to 25 questions in the SQL (Basic)/ SQL (Intermediate) Select Skill in the Easy and Medium Diffic Inside you will find the solutions to all HackerRank SQL Questions. We use cookies to ensure Medium SQL (Intermediate) Max Score: 20 Success Rate: 96. - Sukanya807/HackerRank_SQL_Advanced_Joins SQL - HackerRank Questions and answers. challenge_id = ch. To succeed, candidates should be well-versed in SQL fundamentals and prepared to solve complex scenarios with confidence. So keep the reading time in mind. View answer (1) View all 49 questions. Median of Two Sorted Arrays; 4. Feel free to share your thoughts or ask questions in the comments! Good luck, and happy querying! Sql Inside you will find the solutions to all HackerRank SQL Questions. Data analyst SQL questions fall into three categories: Easy SQL questions - These questions focus on defining In this video, you will be solving a SQL Interview question that has been asked in HackerRank assessment of Meesho. I also used pgexercises. There is a high demand for SQL programmers in the market. 49%. Can anyone help? There were a number of contests where participants each made number of attempts. The HackerRank SQL Advanced Certification is a great way to showcase your SQL expertise. My personal experience with Hackerrank - their questions are too verbose and the language used to describe the problem is too winding and complex for the Medium SQL (Intermediate) Max Score: 20 Success Rate: 96. I am trying to grow my SQL skills and I wanted to ask if hackerrank is a good place to practice or if there are any other good resources? Im not looking for classes as I have taken dozens but a place to practice for interview prep. Contribute to acarter881/hacker_rank_sql_answers development by creating an account on GitHub. It seems like SQL questions are either super basic (filtering and joins) or really intense. I think Leetcode and DataLemur have good question banks for the 40 Top Intermediate SQL Interview Questions and Answers. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Query the greatest value of the Northern Latitudes (LAT_N) Hackerrank Coding Questions for Practice. It stands for Structured Query Language and was developed by IBM in the 1970s, SQL Wannabe Oracle dev here. Question Type = Medium Asked in = Microsoft, Uber, Lyft, Bloomberg, Morgan Stanley, Apple, and Google. 76%. 68%. Click Here for the previous blog-post in the Java interview questions can appear in the hiring process for a variety of roles, including software engineers, back-end developers, full-stack developers, and data scientists. I used LeetCode primarily for multiple big tech companies' interview and did fine. Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Sep 16, 2024. Top Earners | Easy | HackerRank We define an employee's total earnings to be their monthly salary × months worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. This section contains a total of approximately 15 to 20 questions which are to be solved in about 120 minutes This repository includes my answers for the SQL practice questions provided by HackerRank. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. The attempt with the highest score is only one considered. HackerRank and LeetCode for SQL . challenge_id) j INNER JOIN Difficulty d Practice real SQL Interview Questions asked by Amazon, Google, Facebook (Meta), and other FAANG companies during Data Science and Data Analyst interviews. ; Medium: Intermediate-level SQL challenges. Use subqueries instead: Select h. Using either max()/min() can get first non-null value after group by. Q-1. If >80% are solving, then it's too Crack SQL Interview in 50 Qs. It includes solutions to 25 questions in the SQL (Basic)/ SQL (Intermediate) Select Skill in the Easy and Medium Diffic Hackerrank SQL Questions @IanChriste Create an SQL query that shows the TOP 3 authors who sold the most books in total. We use cookies to ensure you have the best When I used Stratascratch, I just built the tables in SSMS since they were so small, and that let me practice in T-SQL. Problem. Write better code with AI Security. You can also test your skills on real-world data sets and compare your solutions SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. author_name, SUM(books. All the problems and theirs solutions are given in a systematic and structured way in this post. Building similar table structures and sample data locally amd trying to solve the problem. Comment. It's hard to find good, hard SQL problems and in my experience unfortunately HackerRank has the best. hacker_id, name from ( Select j. It is organized into six folders, each containing my solutions for easy, medium In this article, I am going to share HackerRank SQL Solutions with you. hacker_id) cnt from challenges c inner join hackers h on c. These questions test your ability to Swiggy is a phoenix that rose out of Harsha & Nandan's earlier venture, Bundl Technologies. Find and fix vulnerabilities HackerRank is an excellent platform for anyone interested in transitioning into the data science domain and honing their SQL and Python skills. hacker_id as hackerid, name, count(c. Hi everyone, I am relatively new to SQL and have started practising on HackerRank and LeetCode. You can watch the video explanation before asking the question. com to brush up on string and date functions. In an Amazon SQL interview, candidates can expect a range of questions that test their SQL knowledge and problem-solving skills. The problem description can be found as comments at the top of each file. Order your output in descending order by the total number of challenges in which the hacker earned a full score. 15 Days of Learning SQL. The assignment will comprise SQL and Python coding questions, the latter related to an ML problem like time series forecasting. Example Task: Create a prepared statement by using a string literal to supply the text of the statement or user variable. We use cookies to ensure you have the best SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Open comment sort options Here are the most common Data Analyst/Science SQL interview questions I have been asked. HackerRank SQL Certifications. Get Prime Course List Time to complete — 29 minutes. For example, in problem Challenges (medium level), I would rephrase the task as: “Write a query to print the hacker_id, You are given three tables: Students, Friends and Packages. I arrived at essentially the same solution, only instead of your method of counting challenges of hackers found in the Challenges table without a join (which is certainly a clean way to do it), I reused the grouping from the original join—to compare the initially derived count to the counts that are unique—in the second portion of the HAVING/OR statement. Advanced Stuff: Good if you want to get really good at SQL. 03%. Sort by: Best. Depending on the job requirements, the complexity of what they're looking for can vary, but BI roles typically require a lot of grouping and aggregation, if I had to think of something to focus on Yeah all good, just dont get too discouraged from some of the "easy" leetcode sql questions, they can be tough sometimes! There also aren't that many compared to their other languages. Interpretation, analysis, and optimization of the code are key skills that Amazon interviewers look for. ; Each folder contains . To get the table values, I copied them from the query window and pasted them into CSV files for upload to the DB. /* MS-SQL*/ with cte1 as (select *, months * salary as earnings from Employee) SELECT earnings, count (*) FROM cte1 WHERE earnings = Create a HackerRank account This repository contains solutions to all the HackerRank SQL Practice Questions - Pavith19/HackerRank-SQL-Challenges-Solutions. In this repository you will find SQL queries of multi-difficulty levels that can applied on to large datasets for various business requirements. Write a query to find the maximum total earnings for all employees as well as the total number of employees who have maximum total Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. -- Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non-evil wand of high power and age. We use cookies to ensure you have the best In this video I am solving "Top Competitors" Problem on Hackerrank. Can someone tell me what I'm doing wrong on this HackerRank question? SQL Server Share Add a Comment. We use cookies to ensure you have You signed in with another tab or window. Test duration 60 mins. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. In this article, we will provide you with a curated list of HackerRank SQL questions. find total number of view, total number of unique views, total number of submissions and total number of accepted submissions. We use cookies to ensure you have the best browsing experience on our website. Master Basic Join Statements for Interviews!This video tackles a SQL challenge from HackerRank, focusing on table join statements. For example, an engineer will likely have attended many scrums. Packages contains two columns: ID and Salary (offered salary in $ thousands per month). Below you can find the Top 25 Hackerrank based coding questions with solutions for the Hackerrank Coding test. You switched accounts on another tab or window. in this article we have collected the most asked and most important Hackerrank coding questions that you need to prepare to successfully crack Hackerrank coding round for companies like IBM, Goldman Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who achieved full scores for Hard SQL (Advanced) Max Score: 50 Success Rate: 78. We use cookies to ensure you have the best Hi all! So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. Some SQL queries. Skills. Medium SQL (Intermediate) Max Score: 20 Success Rate: 96. The interviewer mentioned I will be tested on SQL and Statistics, now when I clicked on the test link to see the test overview there are 3 sections. React Js Frontend Developer Interview Questions & Answers Anonymous posted on 29 Nov 2024 Some of the top questions asked at the HackerRank interview - Case study - How would you improve efficiency (higher orders Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. This is a Medium SQL Problem. Basic Select. Top 15 SQL Interview Questions in 2021 — a compilation of recent and relevant questions. Yeah HackerRank is super weird with the difficulty. Problem: We define an HackerRank SQL Problems and Solutions —2. 02%. Continue reading. These questions not only tested my technical skills but also challenged me to think critically. This is hard SQL question asked in DELL and MICROSOFT interview published at Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. They are unnecessarily long, and the tasks could be clearer. Good for Interviews : Some questions help you get ready for job interviews. * Another nasty join, no real way of getting out of it. This is the only video you will need to improve you HackerRank, SQL, Basic Join, Top Competitors, MySQL, DB2, Oracle, Hive, APDaga, DumpBox, Akshay Daga, HAVING, COUNT, LEFT, JOIN, in SQL, Hacker, Rank Please make use of my blog posts for learning purpose only and feel free to ask your questions in the comment box below in case of any doubt. Which leads me to believe it is the opposite. Apart from making for an effective problem-solving question, it gives the candidate the impression you’re an informed technical recruiter. IMHO, a good question can be solved by about 50-80% of well-qualified candidates who are selected for interview. Revising the Select Query I. We use cookies to ensure Find the maximum amount of money earned by any employee, as well as the number of top earners (people who have earned this amount). Write a query to output the names of those students whose best friends got offered a higher I've exhausted all the free resources on Leetcode, Interview Query and Hackerrank for (Free) Hard SQL Questions. Write a query to find the maximum total earnings for all employees as well as the total number of employees who have maximum total earnings. I was not able to solve it at all. Solve Challenge. Below are some of the most commonly asked SQL query questions and answers for practice. Longest Palindromic Substring; 5. _____ SUBSCRIBE!Do yo hackerrank-python hackerrank-solutions hackerrank-javascript hackerrank-30dayschallange hackerrank-sql hackerrank-statistics hackerrank-interview-kit hackerrank-certificates Resources Readme The goal remains simple, regardless of the interview format: produce clean SQL code as fast as possible. If the technical part has sql coding challenges, then leetcode will help u to go pass it. I removed the unrelated sql-server tag and added html as a generic guess. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. These questions are more suited to SQL practitioners with a few years of experience. Part of HackerRank’s series of skills certification tests Website: LeetCode SQL HackerRank: HackerRank offers SQL challenges and competitions to practice SQL skills. of questions 2 questions. sql files with the respective solution. There are a total of 58 problems of varying difficulty level that test different concepts. SQL. Draw The Triangle 1. Aggregation. Ans. Hackerrank's SQL questions (beyond beginner) are garbage. ; Hard: Advanced-level SQL challenges. Today’s problems focus on cu Top Competitors- SQL HackerRank. You signed out in another tab or window. We use cookies to ensure you have the best browsing 39. Easy SQL (Advanced) Max Score: 25 Success Rate: 96. Are there any platforms that I can practice more (Free) Hard questions on? Can't afford to pay for membership at the moment; will definitely look forward to buying Leetcode's subscription when possible for me! Which of the following statements about the wait-die Scheme? It is a Deadlock prevention mechanism; If the older transaction needs some resource locked by a newer transaction then the older transaction will wait. where LAT_N is the northern latitude and LONG_W is the western longitude. Go with Stratascratch, DataLemur, Leetcode. Hard. Talk to People : You can see what others do and learn from them. HackerRank Technical MCQs involves question from different topics of computer programming such as Data Structures, OOPS, Networking, SQL, etc. ; Advanced: Expert-level problems and more complex queries. sold_copies) AS sold_sum FROM Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. 😱 HackerRank jumps directly into challenging SQL coding questions that has a steep learning curve, some SQL or Structured Query Language helps in managing data in data management systems. qmys llru rvijylop giks kna knkl iue aivbj zboebzm jsgm