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Message Posted: Tue, 13 Aug 2002 @ 19:53:21 GMT


     
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Subj:   Re: Make DISTINCT records and generating sequence number
 
From:   Claybourne Barrineau

Note,

Regarding the use of 'CSUM(1,1)' to generate a unique row ID: all data will be loaded to a single AMP for processing; therefore, don't be surprised if you blow out of spool space if the table you are working with is very large. If a Primary Key exists, then use 'CSUM(1,Primary Key)' to generate a unique row ID. It is much faster because of the even data distribution.

My 2 Cents,

Claybourne Barrineau



     
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