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W3Schools SQL Tutorial: Practice and Test Your Skills with Exercises and Quizzes


W3Schools SQL Tutorial PDF Free




If you want to learn SQL, one of the most popular and powerful languages for managing data in databases, you might be interested in W3Schools. W3Schools is a website that offers free online tutorials, references, and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, Java, and many more.




w3schools sql tutorial pdf free



One of their most popular courses is the SQL tutorial, which teaches you how to use SQL in various database systems such as MySQL, SQL Server, MS Access, Oracle, and others. In this article, we will show you how you can access this tutorial online or download it as a PDF file for free. We will also explain what you will learn from this tutorial and how you can practice and test your skills with W3Schools.


How to access the W3Schools SQL tutorial online




The easiest way to access the W3Schools SQL tutorial is to visit their website at https://www.w3schools.com/sql/. There you will find a comprehensive and interactive guide that covers everything you need to know about SQL.


One of the best features of this tutorial is that it allows you to use an online SQL editor where you can edit and run SQL statements and see the results. For example, you can try this query that selects all the records from a table called Customers:


SELECT * FROM Customers;


You can also click on the "Try it Yourself" button to see how it works. This way, you can learn by doing and experiment with different queries.


How to download the W3Schools SQL tutorial as a PDF file




If you prefer to have a copy of the W3Schools SQL tutorial on your device, you can also download it as a PDF file. However, to do this, you need to get a certificate of completion from W3Schools first.


To get a certificate of completion, you need to complete the SQL course on their website and pass the final exam with a score of at least 75%. The exam consists of 70 multiple-choice questions and you have 70 minutes to complete it. You can take the exam as many times as you want until you pass it.


Once you pass the exam, you will receive a certificate that looks like this:


The certificate costs $95 and it is valid for life. You can also add it to your resume or LinkedIn profile to showcase your skills.


After you get the certificate, you will be able to access the PDF version of the SQL tutorial from your account page. You can download it for free and use it offline whenever you want.


What are the benefits of downloading the W3Schools SQL tutorial as a PDF file




There are several benefits of downloading the W3Schools SQL tutorial as a PDF file. Some of them are:


  • You can access it anytime and anywhere without an internet connection.



  • You can print it out and use it as a reference or a study guide.



  • You can highlight, annotate, or bookmark the parts that you find important or interesting.



  • You can share it with others who want to learn SQL.



Of course, you can also enjoy these benefits by using the online version of the tutorial, but having a PDF file gives you more flexibility and convenience.


What you will learn from the W3Schools SQL tutorial




The W3Schools SQL tutorial is divided into several chapters that cover different aspects of SQL. Each chapter contains explanations, examples, exercises, and quizzes to help you learn and practice. Here is an overview of what you will learn from each chapter:


SQL basics




In this chapter, you will learn the fundamentals of SQL, such as:


  • What is SQL and how it works with databases.



  • What are the main commands and syntax of SQL.



  • How to create, modify, and delete tables and databases.



  • How to insert, update, and delete data in tables.



  • How to select and filter data from tables using various criteria and operators.



  • How to sort and group data using ORDER BY and GROUP BY clauses.



  • How to use aggregate functions such as SUM, AVG, COUNT, MIN, and MAX.



SQL advanced




In this chapter, you will learn some of the more complex features of SQL, such as:


  • How to use joins to combine data from multiple tables.



  • How to use subqueries to nest queries within queries.



  • How to use views to create virtual tables from queries.



  • How to use transactions to ensure data integrity and consistency.



  • How to use indexes to improve query performance.



  • How to use constraints to enforce rules on data.



  • How to use functions to perform calculations or transformations on data.



  • How to use triggers to execute actions automatically when data changes.



SQL reference




In this chapter, you will find some useful resources for SQL keywords and functions, such as:


  • A complete reference for all the SQL keywords and commands with syntax and examples.



  • A list of all the built-in functions for MySQL, SQL Server, and MS Access with syntax and examples.



  • A quick reference for common data types and ranges for each database system.



How to practice and test your SQL skills with W3Schools




The best way to learn SQL is by practicing and testing your skills. W3Schools provides several tools for this purpose, such as:


SQL exercises




For each chapter of the tutorial, you will find a set of exercises that challenge you to apply what you have learned. The exercises are designed to test your understanding of the concepts and syntax of SQL. You can use the online SQL editor to write and run your solutions. You can also see the correct answers and explanations if you get stuck or want to check your work.


SQL quiz




knowledge of SQL. The quiz consists of 25 multiple-choice questions and you have 20 minutes to complete it. You can take the quiz as many times as you want until you get a perfect score. You can also see the correct answers and explanations after you finish the quiz.


SQL certificate