Get the Whitepaper called SQL Injection in MS-SQL Server 2005. Written in Spanish.
You can download it from the following link: https://packetstormsecurity.com/files/download/86235/Inyeccion-SQL-en-MSSQL-HackTimes.com.pdf
Source: https://packetstormsecurity.com/files/86235/SQL-Injection-In-MS-SQL-2005.html