Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Wed, 06 Aug 2003 @ 11:23:38 GMT


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


Subj:   Re: Need help in understanding poor performance
 
From:   Chris Coffing

Since this is a temp table... You can create it as a Multi Set table instead of a SET table and it will run faster because it will not have to check for duplication.

The problem that you run into when inserting millions of rows into a SET table is... as it gets bigger, there are more rows to recheck for duplicates.

If you find that you must create the temp table as a SET table and it starts as and empty table, then you can load it using a FastLoad.

Insert/Select is a great way to insert data into tables but can be very slow if you have large data volumes.



     
  <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: 23 Jun 2019