Comparing two datasets SQL SSRS 2005
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I have two datasets on two seperate servers. They both pull one column of information each. 

I would like to build a report showing the values of the rows that only appear in one of the datasets. 

From what I have read, it seems I would like to do this on the SQL side, not the reporting side; I am not sure how to do that. 

If someone could shed some light on how that is possible, I would really appreciate it. 