Hello. I am hoping someone can direct me on this question. I have two data files. I want to be able to pull out records from one file that match records in another file. I want to match on last name, first name, and date of birth. I am thinking it is something like using an %in% statement and create a True/False variable. But I don't know how to do it for multiple columns. I would appreciate if someone could give me a little direction. I did try searching posts and help files, but I just can't quite find what I need.