The Web Application Hacker’s Handbook Discovering and Exploiting Security Flaws

SQL Syntax and Error Reference 

We have described numerous techniques that enable you to probe for and

exploit SQL injection vulnerabilities in web applications. In many cases, there

are minor differences between the syntax that you need to employ against dif-

ferent back-end database platforms. Further, every database produces differ-

ent error messages whose meaning you need to understand both when

probing for flaws and when attempting to craft an effective exploit. The fol-

lowing pages contain a brief cheat sheet that you can use to look up the exact

syntax you need for a particular task, and to decipher any unfamiliar error

messages which you encounter.