Re: Stored Procedure (or SQL) to get a value then update it to +1

I was hoping I could do this via SQL, but I agree a RPG program is simple.
Since it is a key field I want to be sure two people can can't pull the
same key.

I think I'll do the RPG, that way I KNOW it is locked until the next key is
set.

--
Mike Wills
http://mikewills.me


On Thu, Jul 12, 2012 at 9:23 AM, Vern Hamberg <vhamberg@xxxxxxxxxxx> wrote:

Luis

I read "external application" as anything that could touch the file. We
use data areas for things like "next value" - it seemed he is using this
file that way, But that is all assuming, and we know what that does.

Actually external (RPG) stored procedures are very easy to write, in my
experience - ODBC, etc., does not care what is in the black box. In
fact, any existing program can be used as a stored procedure - you don't
even really have to declare it as such - just call it from SQL. Now to
get a return value, you need a couple more things - still quite easy to do.

As a test, go to STRSQL and do a CALL there - parameters are
comma-separated - it works. There's an implicit SP for any program
object on the i.

Vern

On 7/12/2012 8:06 AM, Luis Rodriguez wrote:

Vern,

I believe that Mike needed to update this value from "an external
application" (his words). So I suppose that means something like a VB
program accessing the data thru ODBC or such. In this case, a Stored
Procedure (or a function) would be the best option and it is easier

(IMHO)

to write one in "pure" SQL than having to write one that calls a RPG
program.

Regards,


Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries

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