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Wikipedia: SQL - http://en.wikipedia.org/wiki/SQL
History and overview of the language. |
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SQL for Web Nerds - http://philip.greenspun.com/sql/
A nicely structured manuscript on SQL by Philip Greenspun, based on the Oracle database. Queries, transactions, triggers, and RDBMS concepts are covered. |
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A Gentle Introduction to SQL - http://sqlzoo.net/
An interactive tutorial. Allows access to tables using any of Oracle, SQL Server, MySQL, Access or PostgreSQL engines. |
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SQL exercises - http://www.sql-ex.ru
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. |
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SQL Tutorial - http://www.1keydata.com/sql/sql.html
This site aims to teach beginners the building blocks of SQL. |
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SQLcourse2 - http://www.sqlcourse2.com/
Online SQL tutorial featuring a live interpreter to test SQL commands. |
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SQL Cheat Sheet: Query By Example - http://www.paragoncorporation.com/ArticleDetail.aspx?ArticleID=27
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. |
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Fluffycat SQL - http://fluffycat.com/sql/
Examples of how to use SQL commands |
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Summarizing data with SQL (Structured Query Language) - http://www.paragoncorporation.com/ArticleDetail.aspx?ArticleID=6
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. |
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Thomas Beck's Home Page - http://www.thomas.beck.name/
Physical Data Model Patterns. |