How to hack website using SQL injection: ~ !!!! FACELESS !!!!

I want to show you just one way that hackers can get in to your website and mess it up, using a technique called SQL Injection. And then I'll show you how to fix it. This article touches on some technical topics, but I'll try to keep things as simple as possible. This article teaches to attack on those websites which have data base. So if your website doesn't use a database, you can relax a bit.