Alan,

According to the DDS reference manual you can redefine a Z(timestamp) data type in a physical file to L(date) in the logical as long as the date is input only (position 38 in DDS is I).

http://publib.boulder.ibm.com/infocenter/iseries/v5r4/index.jsp?topic=%2Frzakb%2Fldata.htm

Paul Morgan

Principal Programmer Analyst
IT Supply Chain/Replenishment

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
Sent: Tuesday, April 12, 2011 4:49 PM
To: Midrange Systems Technical Discussion
Subject: RE: Key a logical file by date within a timestamp field

Thanks both of you, Chuck and Luis
I keep forgetting to specify the release level we are on - which is 5.4 so I can use neither of your suggestions

Because the file is in chronological order (timestamp) the order number 1 may in fact be the millionth record on that particular date, but if I can create a logical by date within that timestamp, then order number, then order number 1 will be the first for that date

I may have to create a temporary file, and populate a date field
I just thought that there may have been something equivalent to SST for timestamp fields

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Luis Rodriguez
Sent: Tuesday, April 12, 2011 4:33 PM
To: Midrange Systems Technical Discussion
Subject: Re: Key a logical file by date within a timestamp field

Alan,

Are you running 6.1 or higher? If so, I wonder if using a derived key would be of help?

Something in the order of

*CREATE INDEX MYLIB/MYINDEX ON MYLIB/MYTABLE (DATE(MY_TIMESTAMP) AS MY_DATE)
*

Unfortunately, we are stuck here in the dark ages (V5R3), but maybe this would be doable...

Regards,

Luis Rodriguez
IBM Certified Systems Expert - eServer i5 iSeries
--



On Tue, Apr 12, 2011 at 3:02 PM, Alan Shore <ashore@xxxxxxxx> wrote:

Hi everyone
I have a physical file, that contains a timestamp field (type z) Is
there any way to create a logical over this physical but ONLY using
the date within that timestamp as part of the key?
As always, any and all responses MUCH appreciated

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill

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