Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Fri, 26 Apr 2002 @ 11:23:11 GMT


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


Subj:   Re: Explanation Required Please!
 
From:   Ulrich Arndt

You did not specify a primary index in the first create statement. By default Teradata uses the first columns - area_code - which is not a good choice as I expect and will result in many hash synonyms. In the second Statement you define a better Primary Index with less hash synonyms -> better performance.

Ulrich



     
  <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