Check out this awesome FREE extension called Scheduled SQL Jobs. This extension is provided by Mitchel Sellers and Iowa Computer Gurus and can be found on GitHub (link provided below). This extension is a sure winner for every DNNCMS website in your portfolio!
DNN Platformhttps://github.com/dnnsoftware/Dnn.Platform
Scheduled SQL Jobshttps://github.com/IowaComputerGurus/dnn.scheduledjobs