Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Mon, 16 Jun 2003 @ 13:45:33 GMT


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


Subj:   Re: PPI's & hard-coded predicates
 
From:   Fuller, Joe

Greetings all, happy Monday!

Actually, I would suggest V2R5 using the Partitioned Primary Index. It kinda creates a separate "table" for each date partition and is extremely fast and functional. We benchmarked Call Detail Records (CDRs) at the benchmark center last year in the order of 80 Billion rows, with a partitioned primary index of the Call date. Date range queries, including the BETWEEN clause, were the fastest I have seen. One of the nice features of PPI is the ability to add new dates to a range, and drop the old dates. Dropping the old partitions effectively deletes the data for those dates. So, if you have a table with 60 days rolling data maintenance is very easy.

Best Regards,

Joe Fuller
Sr Data Warehouse Consultant, DBA
Teradata Professional Services

Advanced Teradata Certified Professional
Teradata Certified Designer



     
  <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