Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Thu, 20 Jul 2000 @ 13:46:46 GMT


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


Subj:   Re: Saturation
 
From:   Roland Thomas

On thing I have found is that if you have a column which has very few values and it is used in the join criteria you need statistics on it. Even if the column is not an index. Eric is correct the more statistics the better.

Review the explains to see if you can spot a problem table or spool that redistributes on a column with few values. Like Eric says, you may be able to change a primary index(not key) and improve performance.

Roland Thomas
Sr. Consultant
NCR Corporation



     
  <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