RE: Indexing an SQL view

Just a comment.  IBM has told me that an SQL Index retrieves data using a
16MB access but logical files use a 4MB access.  I'm not sure about the term
"ACCESS" but I created a number of suggested views (from the V5R2 SQL
Optimizer) and was able to see a better then 10 fold increase in performance
(as measured in reduced response time).
Bill Erhardt

-----Original Message-----
From: Rick.Chevalier@xxxxxxxxxxxxxxx [mailto:Rick.Chevalier@xxxxxxxxxxxxxxx]

Sent: Monday, April 19, 2004 3:38 PM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: Indexing an SQL view


The creation of a DDS logical over the physical file with the substring
values as keys seems to have done the trick.

A lot of panic ensues here whenever triggers are mentioned so I don't think
Walden's suggestion would get far.  Maybe we'll get indexed views soon.

Thanks for all the help,

Rick

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