Home Page for the TeradataForum

Archives of the TeradataForum

Message Posted: Wed, 18 Jun 2008 @ 19:28:43 GMT

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

Subj:   Re: V12, MERGE Logic: 1) Restriction inserts; 2) PPI behavior
From:   Fred W Pluebell

The ON clause defines matching, not filtering. So in Query B you are not "restricting" the number of USING rows processed, just forcing WHEN NOT MATCHED action (i.e. INSERT) for most of them.

  <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: 28 Jun 2020