Hi All,      I have come across a strange situation where a numeric variable is zero in both the base and compare datasets, on the matching ID, and yet they are showing up in the differences output. Below is how I've set up the compare code: proc compare  base       = work.base_ds                         compare  = work.compare_ds                         listobs listvar maxprint=(25,3000) ;            ID InternalID notsorted;            attrib       _ALL_ label=''; /*Get rid of labels, formats and informats for comparison.*/            format     _ALL_ ;            informat  _ALL_ ; run; Below is an example of the results: _______________________________________________________________                           ||    Base      Compare                             InternalID        ||    Score      Score      Diff.     % Diff       ____________ ||  _________  _________  _________  _________                               ||                                                         8329          ||          0          0          0          0             8331          ||          0          0          0          0    Any ideas? Thanks, Huey ... View more