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Message Posted: Wed, 06 Apr 2005 @ 20:00:37 GMT


     
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Subj:   Re: Use of Indexes in Teradata
 
From:   Christie, Jon

If you have a nusi on the date, the optimizer should find a way to use it instead of doing a full file scan. But you should run an explain to make sure.

If you have a PPI and the date is the partitioning column and each partition is for a day, the optimizer can just drop the partition for the date. Almost as fast as delete all.


Jon



     
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