![How to perform an operation on all numeric or all character variables in a SAS data set](https://blogs.sas.com/content/sastraining/files/2017/06/Cody_headshot.png)
In a previous blog, I demonstrated a program and macro that could identify all numeric variables set to a specific value, such as 999. This blog discusses an immensely useful technique that allows you to perform an operation on all numeric or all character variables in a SAS data set.