I have yet to find an automatic way to run something that will tell me the unique key to a dataset.  Often times I've been asked to provide the "key" to a dataset and find myself running procedures utilizing nodupkey or uniquekey but need to provide the variable list.   Is there something that anyone has used to be able to find the key without having to use manual methods to drive down to the variable set that makes the data unique?  I have wondered this for a while, reaching out to the SAS community for answers.   Thank you! ... View more