RE: Can I replace RPG with SQL?

["Morgan, Paul" <Paul.Morgan@xxxxxxxxxxx>]

Charles,

He wants to set ClientVersion to 1 + Max(Clientversion) when ClientVersion = 0 and the ClientID is in the transaction table.  Odd but that's what he wants.  Your Update bumps up the client version in all the records.  

Paul

Principal Programmer Analyst
IS Supply Chain/Replenishment


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Thursday, September 16, 2010 11:28 AM
To: Midrange Systems Technical Discussion
Subject: Re: Can I replace RPG with SQL?

Assuming ClientID is unique in both tables....

update ClientTable
set ClientVersion = ClientVersion + 1
where clientID in (select clientID from NewClientTable);

insert into ClientTable (ClientID, ClientName, ClientVersion)
(select ClientID, ClientName, 0
 from NewClientTable);

HTH,
Charles


On Thu, Sep 16, 2010 at 9:44 AM, David FOXWELL <David.FOXWELL@xxxxxxxxx> wrote:
> I don't think this is easy enough to make it worthwile with sql, but, maybe.....
>
>
>
> Here's my client file that I want to update :
>
> ClientId  ÂClientName ÂClientVersion
> 15       ÂBigs          Â0
>
>
> I receive a file containing clientId and the new name of the client, eg, clientId 15 becomes 'Smith'. But I can't just update the client file from this work file. I need to archive the original name, so I have this kind of representation after the update :
>
> ClientId  ÂClientName ÂClientVersion
> 15       ÂSmith          0
> 15       ÂBigs          Â1
>
> There's a timestamp field among the other fields. Version 0 is always updated to n+1 and a new line is written to the file. So, in the example, I've updated the line Bigs and I've written the line Smith.
>
> So, version 0 is the current version and 1 is the old one. If I change now to 'Eggs', I want to see :
>
> ClientId  ÂClientName ÂClientVersion
> 15       ÂEggs          Â0
> 15       ÂBigs          Â1
> 15       ÂSmith          2
>
>
>
> I ask because I get this request now and again, for a few thousand clients at a time. I'm having to use an RPG to write to the client file, but I always end up using SQL to prepare a work file for that RPG.
>
> Thanks.
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