Welcome to the ultimate SQL interview preparation repository for top tech companies like Google, Salesforce, Walmart, Metaverse, and Microsoft. This comprehensive study plan focuses on solving 50 essential SQL questions on LeetCode, providing you with the knowledge and practice needed to confidently tackle your SQL interview within just one month.
To make the most of this repository and earn your SQL LeetCode Badge, follow these steps:
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Fork and Clone the Repository: Start by forking this repository to your GitHub account and then clone it to your local machine using the provided command.
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LeetCode Badge Challenge: Your mission is to conquer all 50 essential SQL questions on LeetCode mentioned in the study plan.
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Coding Practice: The directory contains SQL solutions to each LeetCode question. Use these solutions as references after attempting the questions on your own.
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Contribute: If you develop an optimized or alternative solution for any LeetCode question, feel free to contribute to the repository by opening a pull request. Collaboration is the key to improvement!
Before diving into the LeetCode questions, ensure you have the following:
- A basic understanding of SQL concepts and syntax.
- A LeetCode account to access the SQL questions mentioned in the study plan.
- A working SQL environment to run and test your code (e.g., MySQL, PostgreSQL, or SQLite).
The study plan is designed to be completed within one month, covering SQL topics progressively. Here's an overview of the weekly breakdown:
- Week 1: Introduction to SQL, SELECT queries, filtering, sorting, and basic functions.
- Week 2: JOIN operations, subqueries, and advanced SELECT queries.
- Week 3: Aggregation, GROUP BY, HAVING, and advanced functions.
- Week 4: Advanced SQL topics, performance optimization, and review.
- LeetCode SQL Section - Access the SQL questions on LeetCode.
- SQL documentation for your chosen database system (e.g., MySQL, PostgreSQL, SQLite) - Use these resources to learn more about SQL concepts and syntax.
This repository serves as a study guide and doesn't guarantee job offers or interview success. It's designed to help you practice SQL interview questions commonly asked by top tech companies. Real interview questions may vary, so be well-prepared for different scenarios.
A special thanks to LeetCode for providing an excellent platform for practicing coding interview questions.
Let's embark on your journey to crack the SQL interview with LeetCode! Happy coding and good luck!
If you have an optimized or alternative solution for any of the LeetCode questions, or you want to enhance the study plan, we welcome your contributions! Please feel free to open a pull request and collaborate with us.
This project is licensed under the MIT License. You are free to use and modify the code as per the terms of the license.