sas 9.4 - esp DS2

http://www.notecolon.info/2013/02/note-ds2-learn-something-new.html
START HERE ... some old basic intro stuff


https://support.sas.com/resources/papers/proceedings15/2523-2015.pdf
good intro
hash
threads
init
run


https://blogs.sas.com/content/sgf/2016/04/22/solutions-for-many-of-the-missing-data-step-features-within-ds2/