FAQs, Help, and Tutorials

SQLCourse - Interactive/On-line SQL Tutorial with SQL Interpreter and live practice database.
http://www.sqlcourse.com/

SQL for Web Nerds - A nicely structured manuscript on SQL by Philip Greenspun, based on the Oracle database. Queries, transactions, triggers, and RDBMS concepts are covered.
http://philip.greenspun.com/sql/

SQL Tutorial - Complete SQL Tutorial using SQL92.
http://www.firstsql.com/tutor.htm

SQLcourse2 - Online SQL tutorial featuring a live interpreter to test SQL commands.
http://www.sqlcourse2.com/

Steve Litt's SQL Troubleshooting Page - Tips on how to troubleshoot SQL queries.
http://www.troubleshooters.com/codecorn/lsql.htm

Database and SQL eLearning - Database theory and an online tutorial interface to an Oracle database system, allowing a user to learn SQL interactively. The site automatically checks and marks SQL and gives instant feedback.
http://db.grussell.org/

Intro To Structured Query Language (SQL) - A basic introduction to writing queries so that beginners can begin to extract data from an existing relational database.
http://www.thundersoftware.com/churchdb/sqltutorial/sql_tutorial.html

SQL Cheat Sheet: Query By Example - Provides ANSI-SQL solutions to common database query/update tasks. These apply to such relational databases as PostGreSQL, MySQL, Microsoft SQL Server, Oracle, Microsoft Access, SQLite.
http://www.paragoncorporation.com/ArticleDetail.aspx?ArticleID=27

A Gentle Introduction to SQL - An interactive tutorial. Allows access to tables using any of Oracle, SQL Server, MySQL, Access or PostgreSQL engines.
http://sqlzoo.net/

SQL Fundamentals - Introduction to SQL
http://databases.about.com/od/sql/a/sqlfundamentals.htm

An Introduction to Database Normalization - Article by Mike Hillyer. Normalizing data is the most effective way to decrease storage requirements and increase data integrity. In this tutorial we cover the basics of data normalization.
http://dev.mysql.com/tech-resources/articles/intro-to-normalization.html

Wikipedia: SQL - History and overview of the language.
http://en.wikipedia.org/wiki/SQL

Fluffycat SQL - Examples of how to use SQL commands
http://fluffycat.com/sql/

SQL In Simple English - SQL presented as a questions and answers session, with questions that novices would like to ask.
http://www.codecoffee.com/articles/sql1.html

Summarizing data with SQL (Structured Query Language) - This article provides a brief SQL How-to on how to summarize data. Most of the examples we provide will be based on the ANSI-SQL 92 standard. Some examples will show features specific to SQL Server 7.
http://www.paragoncorporation.com/ArticleDetail.aspx?ArticleID=6

Thomas Beck's Home Page - Physical Data Model Patterns.
http://www.thomas.beck.name/

Kihlman's SQL (Graphic SQL tutorial) - This program helps you learn SQL, Structured Query Language. You can use the test questions or make your own SQL statements. [Shareware]
http://sql.kihlman.eu/

SQL Tutorial - SQL tutorial featuring a guide to SQL language concepts and SQL commands.
http://www.sql-tutorial.net

SQL Tutorial - This site aims to teach beginners the building blocks of SQL.
http://www.1keydata.com/sql/sql.html

SQL exercises - Help everyone to gain or improve skills in building SQL Data Manipulation Language statements. A rating system is supported for SELECT exercises and certification. SQL handbook. English and Russian versions.
http://www.sql-ex.ru

An Introduction to Structured Query Language (SQL) - By Pan Pantziarka. From creating a simple database to select queries, joins, updates, inserts.
http://www.techbookreport.com/sql-tut1.html

SQL Tutorial by Josh Grant - Brief introduction to basic SQL commands
http://comclub.dyndns.org/tutorials/jrgrant/SQLTutorial.txt

SQL School - Full set of SQL language tutorials featuring in depth coverage on each SQL command.
http://www.w3schools.com/sql/