Home Page for the TeradataForum

Archives of the TeradataForum

Message Posted: Tue, 11 Jun 2002 @ 20:40:33 GMT

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

Subj:   Re: Full-Table Scans and Secondary Indexes
From:   Michael Larkins

Hi Clay:

Teradata will only use an index during the process of reading rows. It only uses an index for a join when it is a nested join. All other joins normally involve one or more SPOOL files and primarily uses a merge join.

So, as far as the actual join processing goes from SPOOL, Teradata never uses an index.


  <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: 27 Dec 2016