Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Fri, 26 Oct 2001 @ 19:37:59 GMT


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


Subj:   Re: Execution Plans for ANSI vs non_ANSI formatted SQL
 
From:   Fred Pluebell

Mixing qualified and unqualified references to the same table (and particularly to the same column as in your examples) should be avoided. Try this instead:

explain locking row for access select a.databaseid, b.tableid, b.fieldid from DBC.TVM a join dbc.tvfields b on (b.tableid = a.tvmid) where b.tableid = '000000090000'xb ;

explain locking row for access select a.databaseid, b.tableid, b.fieldid from DBC.TVM a, dbc.tvfields b where b.tableid = a.tvmid and b.tableid = '000000090000'xb ;



     
  <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