I have a large dataset with a binary target variable (0s and 1s). I'm looking to randomly split the data into a training, validation, and test set while maintaining the ratio of 0s and 1s across all datasets.    How would I do this or what procedures should I be looking into? I tried proc partition, but I don't have a CAS engine library setup (don't know how to check is one has been setup or how setup a session myself). ... View more

I'm learning SAS and I'm looking for ways to make my code better. For assignments, I start by pulling the files I need from a public library into my work library.  Right now, I am writing out a DATA SET step for each file pull. For example, if I know I need to work on three files, I start my assignment with the code below:    data dataset1;     set public.dataset1; run;   data dataset2;     set public.dataset2; run;   data dataset3;     set public.dataset3; run;   Is there a way to simplify this? And what are your thoughts on best practices, if any?  ... View more