Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Tue, 11 Jun 2002 @ 01:10:08 GMT


     
  <Prev Next>   <<First <Prev Next> Last>>  


Subj:   Re: Full-Table Scans and Secondary Indexes
 
From:   David Wellman

Claybourne,

If you're talking about a full-table scan (FTS) the existence of si's of any sort is irrelevant. By definition, an FTS doesn't use an index, it simply scans the data. As has been pointed out, the SI rows are in physically different blocks on disk and so are not referenced during an FTS operation.


Cheers,

Dave

Ward Analytics Ltd: Information in motion (www.ward-analytics.com)



     
  <Prev Next>   <<First <Prev Next> Last>>  
 
 
 
 
 
 
 
 
  
  Top Home Privacy Feedback  
 
 
Copyright for the TeradataForum (TDATA-L), Manta BlueSky    
Copyright 2016 - All Rights Reserved    
Last Modified: 15 Jun 2023