ffddca76_ess___Milo2012_s_Security_Blog__Prerequisites
[No] 5 [Description] Retrieving the Data Type of the Colum [Commands] SELECT * FROM users WHERE id=1 UNION SELECT NULL, TypeName(username),NULL,NULL,NULL,NULL FROM users WHERE 1=1 [Prerequisites] 
Column and Table Name
SQL Injection for Microsoft Access | Milo2012's Security Blog
Prerequisites