SQL Injection: Are your Web Applications Vulnerable
http://www.spidynamics.com/support/whitepapers/WhitepaperSQLInjection.pdf

Blind SQL Injection: Are your Web Applications Vulnerable
http://www.spidynamics.com/support/whitepapers/Blind_SQLInjection.pdf

Advanced SQL Injection in SQL Server Applications
http://www.nextgenss.com/papers/advanced_sql_injection.pdf

More advanced SQL Injection
http://www.nextgenss.com/papers/more_advanced_sql_injection.pdf

Web Application Disassembly with ODBC Error Messages
http://www.nextgenss.com/papers/webappdis.doc

SQL Injection Walkthrough
http://www.securiteam.com/securityreviews/5DP0N1P76E.html

Blind SQL Injection
http://www.imperva.com/application_defense_center/white_papers/blind_sql_server_injection.html

SQL Injection Signatures Evasion
http://www.imperva.com/application_defense_center/white_papers/ sql_injection_signatures_evasion.html

Introduction to SQL Injection Attacks for Oracle Developers
http://www.net-security.org/dl/articles/IntegrigyIntrotoSQLInjectionAttacks.pdf

SQL Injection Cheat Sheet
http://ferruh.mavituna.com/makale/sql-injection-cheatsheet/


Now go and learn