>I'm upgrading a VFP7 app to VFP9. I understand that all non-agregate fields should be included in the GROUP BY clause. Am I mistaken to assume that the primary group should be listed first? If the other fields are included only to make the select work, does it matter whatorder they are listed in?
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>Is there a downside to listing many fields in the GROUP BY clause?
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>Is there a better (or proper) way to handle this?
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>Thanks in advance for any help clarifying.

Yes, primary group should be listed first. For the rest you may use some aggregate function such as min (max) if you don't want to list these fields in the GROUP BY, e.g.

select myGroupField, max(myOtherField) as myOtherField, etc. .... group by 1