Re: Changing PF Definition - Signed to Unsigned -- MIDRANGE-L

Charles is right. But to answer your original question, Brian, "Will itaffect the data in any way?": Yes and No.

Yes: It will, as Charles points out, convert it to a packed format.such that '2006' goes from

No: It's still '2006'. (In a 4P 0 definition, the leading '0' isignored.)




        * Jerry C. Adams
*iSeries Programmer/Analyst
B&W Wholesale Distributors, Inc.* *
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Wilt, Charles wrote:

Brian,

I think you need to take a look at the DDS manual.

4S 0 doesn't mean 'signed', it means zoned.

4  0 doesn't mean 'unsigned', it means packed (as does 4P 0).

In either case, zoned and packed fields are always signed.

The iSeries doesn't have an "unsigned" type for any files regardless of
if you use DDS or SQL DDL to define the file.

HTH,

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121

-----Original Message-----

From: midrange-l-bounces@xxxxxxxxxxxx[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Brian Piotrowski

Sent: Tuesday, January 31, 2006 12:21 PM
To: Midrange Systems Technical Discussion
Subject: Changing PF Definition - Signed to Unsigned

Hi All,

We have a lot of legacy tables that use signed integers fortheir field

types.  I would like to convert these fields to an unsigned integer

field. Now the previous programmers used these fields forstoring date

parts (ie: 4S 0 for a year field - why we'd need a negative year is
beyond me, but I digress).  If I do a CHGPF on these fields, will it
affect the data in any way?



As I mentioned, we have examples such as this:

PRODYYYY 4S 0

PRODMM    4S 0

PRODDD     4S 0

PRODDATE 8S 0



I'd like to change it to this:

PRODYYYY 4  0

PRODMM    4  0

PRODDD     4  0

PRODDATE 8  0



What will happen to the data in these tables?



Thanks!


Brian.



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Brian Piotrowski

Specialist - I.T.

Simcoe Parts Service, Inc.

PH: 705-435-7814

FX: 705-435-6746

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