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SQL Tutorial

Learn SQL

SQL is a standard language for storing, manipulating and retrieving data in databases.

Our SQL tutorial will teach you how to use SQL in MySQL, SQL Server, MS Access, Oracle, PostgreSQL, and more.

Become SQL Certified

Get certified with our SQL exam, includes a professionally curated study kit to guide you from beginner to exam-ready.

CERTIFICATE OF COMPLETION This certifies that Your Name has passed the W3Schools SQL Certification exam and is hereby declared a Certified SQL Developer The candidate has passed the exam at the Professional level. Verify at verify.w3schools.com Stale Refsnes for w3schools.com

Examples in Each Chapter

With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.

Click on the "Try it Yourself" button to see how it works.

SQL Exercises

Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

See all SQL Exercises

SQL Examples

Learn by examples! This tutorial supplements all explanations with clarifying examples.

See All SQL Examples

SQL Quiz Test

Test your SQL skills at W3Schools!

Start SQL Quiz!

Track Your Progress

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SQL References

At W3Schools you will find a complete reference for keywords and functions:

SQL Data Types

Data types and ranges for Microsoft Access, MySQL and SQL Server.

SQL Data Types


Course Certification

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