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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 other database systems. Start learning SQL now » 🏁
With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.
SELECT * FROM Customers;
Click on the "Try it Yourself" button to see how it works.Many chapters in this tutorial end with an exercise where you can check your level of knowledge.
Learn by examples! This tutorial supplements all explanations with clarifying examples.
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At W3Schools you will find a complete reference for keywords and functions:
Data types and ranges for Microsoft Access, MySQL and SQL Server.