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Message Posted: Thu, 13 Dec 2001 @ 13:37:08 GMT


     
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Subj:   Re: Performance optimization issue
 
From:   Geoffrey Rommel

  For an index on the date to be used the dates must be specified explicitly, that is not using between or > .  



This is not quite true. If you define your secondary index with ORDER BY VALUES, Teradata will use the index for small ranges. I have used this very technique on a large table with transaction dates, thus:

create index (transaction_date) order by values on table_name;



     
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