Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Fri, 27 Jul 2012 @ 07:24:56 GMT


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


Subj:   PE plan for join
 
From:   sughesh iyyani

Hi Experts,

Kindly let me know the explanation for below scenario.

Suppose there are 2 tables, table a with 10 million records, table b has 100 million records, now we are joining both tables, when we see explain plan of PE the plan showing TD will took smaller table a and it will redistributes it among all AMPs to do join.

My question is: by doing this plan is the optimizer is correct job or not ?

So much spool space required for this operation.

If I have UPI and some SI on this table, will PE select above plan?

Kindly let me know.


Thanks in advance,

Sughesh I S.



     
  <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