The attached file in this article lists all the handy functions used in the PPC industry.
The functions are separated into 5 categories:
- Logic + Text functions
- Date functions
- Sum + Count functions
- LookUp functions
- Query function
Grab a FREE working copy of the file here: https://goo.gl/DiOe4p
Drop your comments below if you want to see some other functions which are not described in the doc.