RE: READE with partial key

YES

Paul Therrien
Orion South, Inc.
504-374-9551
800-487-7173; Ext. 551
ptherrien@xxxxxxxxxxxxxxx


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Booth Martin
Sent: Wednesday, June 19, 2013 3:32 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: READE with partial key

Here is where I am having trouble. Lets say that the file is uniquely keyed by Item and SKU number. Lets say there are logicals defined by Item & color, Item & size, and Item & date.

If my program uses the logical of Item & Date and I SETLL on item alone, will I always get the lowest Item & Date record?

On 6/19/2013 2:44 PM, Charles Wilt wrote:

No SETLL with ITEM = 1, would position the cursor before record 1.

A READ or READE (with item = 1) would return the first record.

Charles


On Wed, Jun 19, 2013 at 3:25 PM, Briggs, Trevor (TBriggs2) <
TBriggs2@xxxxxxxxxxx> wrote:

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.

--
Booth Martin
802-461-5349
http://www.martinvt.com
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