I think you need to have at least one aggregated variable. "/k=n" would give you a count.

Did you try just leaving the function out of the syntax?

You might also look at Tables.

Hope this helps.

Art Art@DrKendall.org Social Research Consultants University Park, MD USA (301) 864-5570

Bob Walker wrote: > Hi Listers, > > I'm using AGGREGATE to generate a set of unduplicated fields from a large > database of individual records, but I only need the fields. Is there a way > to do this without having to specify an aggregation variable? Right now I'm > aggregating on CATEGORY (since it's numeric), but I am immediately dropping > it since I don't need it. For example: > > AGGREGATE/OUTFILE=*/BREAK TERR FAMILY CATEGORY DISTRICT REGION/K = > MEAN(CATEGORY). > > Any suggestions? > > TIA, > > Bob Walker >