I disagree. If you setll with '1' you will get the first '1' .
If you do a SETGT with a '1' then you are correct that the cursor will point to the 3rd record. BUT, afterthat, if you do a READE with a '1' you will get an EOF condition.
Paul
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Briggs, Trevor (TBriggs2)
Sent: Wednesday, June 19, 2013 2:25 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: RE: READE with partial key
I'm sorry, but that logic just doesn't hold. Given the following
records:
Item Date
1 01/01/2013
1 12/31/2013
2 02/01/2013
If you SETLL using only Item with a value of '1', if will set the cursor between the second and third records and doing a READE with the same key will read the 3rd record. It matters not a whit that the date key of record 2 is higher than that of record 3.
Trevor Briggs
Analyst/Programmer
Lincare, Inc.
(727) 431-1246
TBriggs2@xxxxxxxxxxx
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Booth Martin
Sent: Wednesday, June 19, 2013 3:19 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: READE with partial key
I'd be concerned that the date field is likely to be the highest date from the last read cycle, not *loval. After the first read in the program it is unlikely that he will ever find a record with a date lower
than the highest date read since the first cycle of the program.
On 6/19/2013 2:09 PM, Alan Shore wrote:
I believe that as long as the f-spec for the file FILE is defined as
keyed, you SHOULD get the records in Item (ascending)
Date (ascending) order.
Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Wednesday, June 19, 2013 2:54 PM
To: RPG programming on the IBM i / System i
Subject: READE with partial key
Suppose I have a file defined via DDL with unique key consisting of
Item (ascending)
Date (ascending)
// Set position in file
SETLL Item FILE;
// Only while this item
Dow '1';
Reade Item FILE;
If %EOF(FILE);
Leave;
Endif;
process record . . .
Enddo;
I am not assured of getting records within this item in ascending Date
sequence, am I? Some testing I'm doing now shows that I don't.
--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com
The opinions expressed are my own and not necessarily the opinion of
my company. Unless I say so.
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