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Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Solve SQL | HackerRank We use cookies to ensure you have the best browsing experience on our website.
The HackerRank Skills Certification Test is a standardized assessment to help developers prove their coding skills. Get noticed by companies Candidates who successfully clear the test will be specially highlighted to companies when they apply to relevant roles.
SQL. These concepts cover the fundamental syntax and basic features of SQL. They are necessary for writing simple SQL queries and understanding the core structure and flow of database operations. Activities involved: Setting up a database environment and understanding SQL’s purpose and use cases. Reason: Fundamental setup and understanding ...
Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.
A participant's total score is the sum of the scores earned for each problem attempted. If you submitted more than one solution for a problem, only your highest score achieved will be used in this calculation. Participants are ranked by score, with the cumulative time taken (between the contest's start time and the time of your correct ...
Julia conducted a days of learning SQL contest. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. Write a query to print total number of unique hackers who made at least submission each day (starting on the first day of the contest), and find the hacker_id and name of the hacker who made maximum number of ...
7 Advanced SQL Interview Questions. Below are seven examples of the kinds of problems a data scientist or software engineer might face during a technical interview. These questions all test SQL and relational database skills, and are meant to be solved in a collaborative integrated development environment (IDE).
This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Please check 1. SQL-Business-Expansion and 2. SQL-Product-Sales-per-City files for the solutions I submitted!
This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Each solution includes a brief explanation of the problem and my approach to solving it. These solutions can be used as a reference for other learners or as a way to practice and improve SQL skills. Resources
The Report. You are given two tables: Students and Grades. Students contains three columns ID, Name and Marks. Grades contains the following data: Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Ketty doesn't want the NAMES of those students who received a grade lower than 8.