SQL Tutorial


SQL (Structured Query Language) is a standardized programming language used to manage and manipulate relational 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 so on.

Online Testing Tool:https://www.jyshare.com/front-end/7768/。

Examples in Each Chapter

Each chapter provides simple SQL examples.

Examples

SELECT * FROM Websites;

The SQL in this tutorial has been tested in MySQL.

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

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

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

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SQL Quick Reference

A SQL quick reference manual that you can print and put in your pocket for viewing at any time.

SQL Quick Reference

SQL Data Types

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

SQL Data Types

Other Extensions