Re: Sorting

["Kelley Shaddrick" <kshaddrick@xxxxxxxxxxxxxxxx>]

I did mimic one of our reports that currently uses FMTDTA to preselect data, 
using embedded SQL. The SQL statements were dynamically created within the 
RPG program. While the process did work, it was over 10 times slower then 
the FMTDTA method. I am by no means an SQL expert, perhaps there is tuning 
and such that could be done. However, the slowness of our tests with 
embedded SQL precludes us from using it.

Kelley

----- Original Message ----- 
From: "Michael Ryan" <michaelrtr@xxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Thursday, April 26, 2007 6:29 PM
Subject: Re: Sorting


> This sounds like a great application for an RPG program using embedded
> SQL. Search the archives - you'll find some good material.
>
> On 4/26/07, Kelley Shaddrick <kshaddrick@xxxxxxxxxxxxxxxx> wrote:
> > Folks,
> >
> > I am currently working in a shop that has a lot of older code. The code 
> > was
> > run through some kind of utility to make it RPG IV compliant, sort of, 
> > this
> > was done before my time. There are still large numbers of programs that 
> > have
> > internally defined files, and so on. The other thing that is used very
> > heavily is FMTDTA. One of the reasons is that we do a lot of selecting of
> > data. As an example, our item number is made up of 5 2-digit codes. Each 
> > of
> > these 5 codes is used to select the data a user wants to see on screens 
> > and
> > reports. Depending on what they want, all five could be used or only one 
> > or
> > any combination of. The data is then sorted into the proper order. The
> > source specs for FMTDTA are generated on the fly. FMTDTA seems to do this
> > well.
> >
> > I've read through a number of entries in the forum archive that discussed
> > open query, SQL, etc. These options, from what was written, either don't
> > seem to be able to handle this very well, or are not really in favor any
> > more then FMTDTA is. I looked briefly at using SQL with the RUNSQLSTM
> > command, but don't seem to see any way to use the order by clause 
> > (perhaps
> > I'm doing something wrong, but I always get an error that it is not a 
> > valid
> > tag). I'm concerned with FMTDTA, one of these days IBM may just neglect 
> > to
> > include it as an option. I'm looking for ideas for replacing it with
> > something else.
> >
> > Thanks,
> >
> > Kelley
> >
> >
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