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Anti-Join in Paxata
So on the continuing monster project I've been working on, the SPSS stream that I am to match/mimic in Paxata calls for a a merge between two data sets on four keys columns. But it's an "anti-join" between two data sets, to "include records in the first data set that do not match any others (anti-join)." Looking at the options for Look-up, I don't see a way to do this. Would this be done via Append instead or is there something I'm missing? Any thoughts appreciated.