Hi everyone,   This might be a quite trivial problem, but I am completely new at SAS. So I am sorry, if something similar is covered already somewhere and I just didn’t see the connection.   I need to merge two datasets based on ID (wficn) and date in SAS studios. One dataset contains monthly variables and another one yearly. Yearly variables are given for the whole year at the end of the year and I need them to be merged into the data set with monthly observations. This would basically result in having always the exact same value for each of the 12 months per year.     Unfortunately, I have no idea how I can address this problem, so maybe someone can help me out. Thanks a lot everyone! ... View more