Structured Query Language
Structured Query Language (SQL) is a widely-used programming language for working with relational databases. The name of the language is generally pronounced as the three letters of its abbreviation ˈɛs kjuː ˈɛl or, in some people's usage, as ˈsiːkwəl.
This Wikibook provides a short description of SQL, its origins, basic concepts and components, and many examples. The book follows the specifications of the SQL:2011 standard developed by a common committee of ISO and IEC. Their publications are not freely available but can be ordered online. Or you may want to refer to a working draft that you can download from Whitemarsh Information Systems Corporation.
Data Query Language
Data Manipulation Language
Data Definition Language
Data Control Language
- Additional SELECT features
- Transactions / Isolation Levels
- Some Notes on typical SQL (non-trivial) Tasks