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  1.  Home
  2. RPG400-L
  3. December 2012

RE: sql database in RPGLE program with lots of columns

Kim,
It is normal/typical to have this kind of data type miss-match between
two different databases, especially if one is older or more of a "legacy"
design.

Whether to convert at the DB level is a decision for you to consider, but
my first thought would be to just convert at the data connection level and
leave the respective DB objects as they are.

In my environment, changing a legacy system that is still heavily used
is out of the question and means I must work with the "numeric dates"
on the legacy side and use "real date data types" on the other side.

The common denominator to convert between the two is a character representation.

For example, a legacy CYYMMDD numeric value of 1121212 would be
"2012-12-12" in character format,
and that character format will be pretty close to what most any
SQL DB would understand.

First time it is a headache, second time, it gets better, after that
it is routine.

Hope this helps.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Kim Massar
Sent: Wednesday, December 12, 2012 1:46 PM
To: 'RPG programming on the IBM i / System i'
Subject: RE: sql database in RPGLE program with lots of columns

"Now I have a new problem, there are fields defined in the sql table as dates ([Original_File_Date] [date] NULL) in MMDDCCYY. In our iSeries file they are defined as numeric, in CCYYMMDD order."

Or, I guess I should just move the date fields to a date field on the iSeries and then convert. Sometimes it takes me a while!

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Kim Massar
Sent: Wednesday, December 12, 2012 3:22 PM
To: 'RPG programming on the IBM i / System i'
Subject: RE: sql database in RPGLE program with lots of columns

Now I have a new problem, there are fields defined in the sql table as dates ([Original_File_Date] [date] NULL) in MMDDCCYY. In our iSeries file they are defined as numeric, in CCYYMMDD order.

1. Is this something I should not try, or will not be able to, convert when I get the columns? (removing the slashes and reordering fields).
2. I have tried this syntax, but does not work: CRTDT = %dec(%Char((jdbc_getCol(rs:12)):*iso-):8:0) . I get the first and second parameter are not allowed for *Char, so I am guessing I can't define the column number here? My reason for question #1!!


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Kim Massar
Sent: Tuesday, December 11, 2012 4:37 PM
To: 'RPG programming on the IBM i / System i'
Subject: RE: sql database in RPGLE program with lots of columns

We are on 6.1

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Tuesday, December 11, 2012 4:35 PM
To: RPG programming on the IBM i / System i
Subject: Re: sql database in RPGLE program with lots of columns

What OS version?

If 7.1, you might be able to take advantage of the new INSERT into <local table>
SELECT FROM <remote table>

With an appropriate DRDA<-->JDBC bridge such as ArdGate (opensource) http://sourceforge.net/projects/appserver4rpg/

There's also a similar commercial product...

Charles


On Tue, Dec 11, 2012 at 4:13 PM, Kim Massar <kmassar@xxxxxxxxx> wrote:

Writing them to a work file, physical file not qtemp

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Charles Wilt
Sent: Tuesday, December 11, 2012 3:50 PM
To: RPG programming on the IBM i / System i
Subject: Re: sql database in RPGLE program with lots of columns

What are you doing with the data once it's mapped into RPG variables?

Charles


On Tue, Dec 11, 2012 at 3:33 PM, Kim Massar <kmassar@xxxxxxxxx> wrote:

HI all,
I previously sent a question on reading an SQL db in an RPGLE
program using Scott Klement's example code, which I got to work. I
have a follow up question. I have a db with 165 columns of which I
will be getting 140 of those columns. When I read thru the result
set, do I need to list all 140 columns like this:

dow (jdbc_nextRow(rs));
RecordId = jdbc_getCol(rs:1);
SsnId = jdbc_getCol(rs:2);
Etc...

Or is there a more efficient, faster way. By faster, I mean
processor speed.

Thanks



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