RE: Database Access Path Question

["Steve Richter" <srichter@xxxxxxxxxxxxx>]

Hi Nelson,

Use "dynslt".  that tells the system to build the complete access path ( all
records ) and then dynamically select records at i/o time.

Steve

-----Original Message-----
From: midrange-l-bounces@midrange.com
[mailto:midrange-l-bounces@midrange.com]On Behalf Of Smith, Nelson
Sent: Thursday, February 06, 2003 9:39 AM
To: midrange-l@midrange.com
Subject: Database Access Path Question


Check my thinking on this.....

If I have a logical with 7 key fields and a select/omit field selecting a
particular code, and I create a new logical with the same key fields and
select/omit field but selecting out a different code, will the new logical
share the seven-key-fields part of the access path with the first logical?

It would seem NOT to me, since the select/omit field is in reality just an
initial key.  In fact, if it were listed first in an eight-field key list, I
would have been able to SETLL and READE on either code and then the rest of
the 7 keys. Doesn't this mean that the two logicals would never share an
access path even though they use the same seven keys?  Or, is the database
smarter than that?

Nelson Smith
nsmith@lincare.com
ncsmith@tampabay.rr.com



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