Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Mon, 13 Jul 2015 @ 20:26:53 GMT


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


Subj:   Re: PPI in TD
 
From:   Anomy Anom

<-- Anonymously Posted: Monday, July 13, 2015 16:15 -->

If the partitioning column is not part of the PPI, then enforcing PI uniqueness would be a very costly operation requiring a check for duplicate PI values within each partition.

But if the partitioning column is part of the PI, then the uniqueness check is limited to a single RowHash just as it is for non-PPI tables.



     
  <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