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Message Posted: Thu, 20 Oct 2005 @ 13:24:36 GMT


     
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Subj:   Re: UNION or UNION ALL
 
From:   McBrideM

"Union All" is faster because it ignores 9(and returns) duplicate rows.

"Union" will sort and eliminate duplicates, returning just one unique row in the two sets being combined.


Michael E. McBride, MSCIS



     
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