![](https://blogs.sas.com/content/sgf/files/2017/01/ProgrammingTips-2.png)
Can you actually get something for nothing? With PROC SQL’s subquery and remerging features, yes, you can. Often there is a need to add group descriptive statistics such as group counts, minimum and maximum values for further by-group processing. Instead of first creating the group count, minimum or maximum values