RE: SQL/400 Trigger Problem

[rob@xxxxxxxxx]

Ian,

I was wondering if you took Nelson's advice.  I strongly recommend the
buffer method.  In fact I have a sample program (which I would modernize at
the drop of a hat).  This program reads the buffer, and updates two fields
- user and date of last update - in the buffer before the record is written
to disk.  Just change your trigger to before instead of after and also use
ALWRPTCHG.

Just had a programmer here yesterday who put this into effect for a Notes
application which updates a file.  The trigger on that file posts the data
to a more permanent file.  Uses the buffer.  I had to beat him into
submission because he kept trying to figure out a way to read the file.
But now he has seen the light.

Rob Berendt

ÝÝÝÝÝÝÝÝÝÝÝÒThey that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin



                    "Smith, Nelson"
                    <NSmith@lincare.com       To:     
"'midrange-l@midrange.com'" <midrange-l@midrange.com>
                    >                         cc:
                    Sent by:                  Fax to:
                    midrange-l-admin@mi       Subject:     RE: SQL/400 Trigger 
Problem
                    drange.com


                    11/15/2001 09:05 AM
                    Please respond to
                    midrange-l






When the trigger is fired, you are already presented with the data for that
one record only.  Just change whatever you want to change.  There is no
reason to use SQL unless your change involves going out to other files for
other data.

> -----Original Message-----
> From:         Ian J. Forsyth [SMTP:iforsyth@360GROUP.com]
> Sent:         Wednesday, November 14, 2001 10:17 PM
> To:           midrange-l@midrange.com
> Subject:           SQL/400 Trigger Problem
>
> Is there a way to create a RPG trigger on a physical file and embed SQL
> in the RPG code to update ONLY the record being inserted and no other?
>
> I know how to embed SQL in an RPG program, but if I do:
>
> update file x
> set field Ýalue
>
> I believe I'm globally updating every record in the file instead of
> updating
>
> the one that's being inserted.
>
>
>
>
>
>
>
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