I have a dataset that I am processing in BY-groups and am using multiple LAG functions, e.g. a LAG1 variable, a LAG2 variable, etc.   When I reach a new BY group, I want to clear the entire LAG queue from memory and start over. If I use FIRST. I can clear lagged values from the first record in a BY group, but on the second record of the BY group I am still pulling in lagged values from the previous BY group.   I could probably devise a work-around but I am wondering if there is a simple command to clear the entire LAG queue.   Thanks ... View more