SQL INJECTIONS: AN INTRODUCTION
Each one of us has a different way to learn and understand technical concepts. Therefore I thought of
adding text writeups for my SQLi LABS series to go along with the videos.
you can follow up the article on infosec intitute site at the following link. http://resources.infosecinstitute.com/sql-injections-introduction/
This covers theory of SQL injections, different types and the basics of error based sql injections. Less-1, Less-2, Less-3 and Less-4 are discussed in the writeup.
more writeups to follow up.