Re: NOT allowing null value into PF fields(big puzzle)

CREATE TABLE XFILE
(IFUTCOD CHAR (4 ),
 NOPTCOD CHAR (6 ) NOT NULL,
 IOPTCOD CHAR (6 ) NOT NULL WITH DEFAULT)
RCDFMT XFILER

Hi Rob As you said I created the table as above  and
1)I have done CPYFRMIMPF
===> CPYFRMIMPF FROMSTMF('/etc/dalc/apps/testfile1.csv') TOFILE(JPASCO/
XFILE) MBROPT(*REPLACE) RCDDLM(*CRLF)

and tried to execute the simple SQL:

update file a set optcod=(select
noptcod from xlfile b
where a.optcod=b.ioptcod)

update FILE a

I end up with an error which as below:
"Result of SELECT more than one row."

Do you think any solution for this?


Warm Regards,
JoeP

From: rob@xxxxxxxxx
Reply-To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: NOT  allowing null value into PF fields...
Date: Wed, 4 Oct 2006 15:24:33 -0400

You have a few options on each field.  Here's the three options
CREATE TABLE XFILE
 (IFUTCOD CHAR (4 ),
  NOPTCOD CHAR (6 ) NOT NULL,
  IOPTCOD CHAR (6 ) NOT NULL WITH DEFAULT)
 RCDFMT XFILER
IFUTCOD allows null
NOPTCOD will not allow null
IOPTCOD will not allow null but if nothing is passed will default it to
blanks.

Like,

INSERT INTO ROB/JOEP (ifutcod) VALUES('A')
Null values not allowed in column or variable *N.
Failed because NOPTCOD is NOT NULL and does not specify a default.

INSERT INTO ROB/JOEP (NOPTCOD) VALUES('A')
1 rows inserted in JOEP in ROB.
worked fine because IFUTCOD allows a null.  And IOPTCOD got defaulted to
blanks.

Problem with DDS created files.  DDS created files are built to allow crap
in most fields.  Some legacy thing when people got off grunting, thumping
their chest and writing batch programs that checked fields down to the
byte level for data that is right.  Like the first COBOL program I wrote
in a class - make sure a field that is supposed to be numeric, is.  DDS
files are fast to write to, but slow to read from because they don't care
what kind of data you write to them.  But they'll check the data quality
on a read.  When you think about it, most of your data access is reading,
right?
SQL created files check data on a write.  Not on a read.
Recently saw a classic example of this.
Compile this:
                R JOEPR
                  MYCHAR         5A
                  MYPACK         9P 2
with CRTPF FILE(ROB/JOEP) SRCFILE(ROB/QDDSSRC)
Run this command:  CRTPF FILE(ROB/JOEP2) RCDLEN(10)
STRSQL
INSERT INTO ROB/JOEP2 VALUES('NOWISTHETI')

CREATE TABLE ROB/JOEP3
(MYCHAR CHAR (5 ) NOT NULL WITH DEFAULT,
 MYPACK DEC (9 , 2) NOT NULL WITH DEFAULT)
RCDFMT JOEP3R
(exit sql)

CPYF FROMFILE(JOEP2) TOFILE(JOEP) MBROPT(*ADD) FMTOPT(*NOCHK)
Notice:  Allowed crap into JOEP.  You have a packed decimal field with
alpha characters in it.

But CPYF FROMFILE(JOEP2) TOFILE(JOEP3) MBROPT(*ADD) FMTOPT(*NOCHK)
Tells me to bugger off with CPF5035-Data mapping error on member JOEP3.

Now if I attempt to read the corrupted DDS created file with a simple
RPGLE cycle program
     FJOEP      IP   E             DISK
     FQSYSPRT   O    F   80        PRINTER
     OQSYSPRT   D
     O                       MYCHAR
     O                                              ' '
     O                       MYPACK
I will get RNQ0907-Decimal-data error occurred.

Verifying that DDS files check data integrity on read.  SQL created files
check data integrity on write.


Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





"Joseph Pascoguin" <joe.pascoguin@xxxxxxxxxxx>
Sent by: midrange-l-bounces+rob=dekko.com@xxxxxxxxxxxx
10/04/2006 02:02 PM
Please respond to
Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>


To
midrange-l@xxxxxxxxxxxx
cc

Subject
NOT  allowing null value into PF fields...






Hi All,

Below is my physical file,

R XFILER
  Ifutcod        4
  Idescr        25
  Iclient        4
  Ioptcod        6
  Noptcod        6
  reason        25

I donot want to allow NULL values into the fields NOPTCOD , IOPTCOD when
copying or importing data into this file.

what changes I should be making in this PF. Iam creating this file to
import
data from an xl sheet(CPYFRMIMPF).

JoeP

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