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SQL Tutorial

SQL is a standard computer language for accessing and processing databases.

In this tutorial, you will learn how to use SQL to access and process data in data systems, including databases such as MySQL, SQL Server, Access, Oracle, Sybase, DB2, and more.

Chapter Examples

Each chapter provides simple SQL examples.

Example

SELECT * FROM Websites;

This tutorial's SQL has been tested in MySQL.

The SQL file for the Websites table used in this tutorial: websites.sql.

The SQL file for the access_log table used in this tutorial: access_log.sql.

The SQL file for the apps table used in this tutorial: apps.sql.

Start learning SQL now!

SQL Quick Reference Guide

A SQL quick reference guide that you can print and carry in your pocket for easy access.

SQL Quick Reference Guide

SQL Data Types

Introduces the data types and ranges for Microsoft Access, MySQL, and SQL Server.

SQL Data Types

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