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SQL is a standard language for storing, manipulating and retrieving data
Our SQL tutorial will teach you how to use SQL in:
MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.
Start learning SQL now »
Examples in Each Chapter
With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.
SELECT * FROM Customers;
Try it Yourself »
Click on the “Try it Yourself” button to see how it works.
Test Yourself With Exercises
Insert the missing statement to get all the columns from the
* FROM Customers;
Start the Exercise
Learn by examples! This tutorial supplements all explanations with clarifying examples.
See All SQL Examples
SQL Quiz Test
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At W3Schools you will find a complete reference for keywords and function:
SQL Keyword Reference
MS Access Functions
SQL Quick Reference
SQL Data Types
Data types and ranges for Microsoft Access, MySQL and SQL Server.
SQL Data Types
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