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-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of PAPWORTH Paul
Sent: Tuesday, October 09, 2007 3:17 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Using an SQL VIEW as a file (F Specs) in a RPG programme
Can I use a VIEW which contains a SELECT where FIELD = 'XXXX'
as a file in an RPG program and use a SETLL to position to
this value prior to a READ.
I've tried to do this but keep getting a compile error which
basically is saying that you cannot perform this operation on
a programme described file
Thanks in advance
-----Message d'origine-----
De : rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] De la part de
rpg400-l-request@xxxxxxxxxxxx Envoyé : lundi 8 octobre 2007
20:39 À : rpg400-l@xxxxxxxxxxxx Objet : RPG400-L Digest, Vol
6, Issue 997
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Today's Topics:
1. AW: Create table & Create Phisical File (BirgittaHauser)
2. Re: Create table & Create Phisical File (Luis Rodriguez)
----------------------------------------------------------------------
message: 1
date: Mon, 8 Oct 2007 19:36:17 +0200
from: "BirgittaHauser" <Hauser@xxxxxxxxxxxxxxx>
subject: AW: Create table & Create Phisical File
Hi,
Neither an EVI nor a Binrary Radix Tree index can be
specified in SQL.
Because it's the optimizer that looks for the optimal access path.
You can specify a DDS described logical file in a SQL Select
statement, but the optimizer does not care about the key
specified in the logical file.
Before the optimizer searches for the perfect index, it
analyzes the SQL statement. If a DDS described logical file
is specified the optimizer looks into the file description
ant takes the infos about the selected fields, the joins and
select/omit clauses and rewrites the SQL statement with this
information but based on the underlying phyiscal files (or
SQL Tables).
After this step the optimizer searches through all access
paths (DDS described logical files and SQL index) to
determine the best access path.
Even though an index cannot be specified in an SQL statement,
it can be specified in the F-Spec and used like any other
(DDS-described) keyed logical file.
Mit freundlichen Gr??en / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the
stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek
Bok) "What is worse than training your staff and losing them?
Not training them and keeping them!"
-----Urspr?ngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von Raul A. Jager W.
Gesendet: Monday, October 08, 2007 16:18
An: RPG programming on the AS400 / iSeries
Betreff: Re: Create table & Create Phisical File
Add the "FROM".
You can't select from an "EVI" index, but the others options
will allow the select, but the output will not necesarily
come ordered, unless you use "order by".
Wilt, Charles wrote:
You can't SELECT * IDXFILEfile object,
While the index IDXFILE is implemented as an i5/OS logical
and you can normally do a SELECT * FROM MYLF, when MYLF is a DDSbetween a
defined logical, the system does know there is a difference
DDS logical and an SQL index.ordering, add the
When using SQL you should _always_ specify the actual physical
file/table (or a view) on the statement. To provide
ORDER BY clause on your select statement.during the
HTH,
Charles
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cezary Krzywda
Sent: Monday, October 08, 2007 10:39 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Table1 - PF
Next I prepare index using SQL
Create IDXFILE
CREATE INDEX Lib1/IDXFILE ON Lib1/Table1 (
S08FIR,OS08KLI,OS08GRPR,OS08IDX,OS08KODR,OS08DOS,OS08MT,OS08DATOD)
After that I run sql
Select * From IDXFILE
And I got errors
IDXFILE in Lib1 not table, view, or physical file.
Czarek
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
matt.haas@xxxxxxxxxxx
Sent: Monday, October 08, 2007 4:26 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Create table & Create Phisical File
What did you call the index? Is the library you specified
logical file. Allcreate in you library list? What's the error you got?
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cezary Krzywda
Sent: Monday, October 08, 2007 10:25 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
I have run
Select * From IDXFILE
And I had error ?
It seems that INDEX is not the same logical files .
I will try to use INDEX in RPG program Czarek
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
matt.haas@xxxxxxxxxxx
Sent: Monday, October 08, 2007 4:12 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Create table & Create Phisical File
When you create an index, it can be used just like a
instead ofyou have to do is specify the name of the index you created
e-mail and anythe base table name in your F specs.
Matt
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cezary Krzywda
Sent: Monday, October 08, 2007 10:10 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
So
How Can I use Setll , SetGT .? Should I create index using CREATE
INDEX in SQL ? But the problem is How can I use this index in RPG ?
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Wilt, Charles
Sent: Monday, October 08, 2007 4:00 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Unique?
Then you can't have a key on the SQL table.
Sorry, but that's just the way it works.
Is there no combination of current fields that are unique?
Even if KEY1,KEY2 aren't unique, if by adding KEY3 you can get a
unique key into the file, you can add
KEY3 without needing to change any existing programs.
The only other way would be to a an auto-incrementing field to the
file, but that would require recompiling all existing RPG programs.
HTH,
Charles
-----Original Message-----like you can
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cezary Krzywda
Sent: Monday, October 08, 2007 9:57 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
But fields are not uniqual
Pozdrawiam
Cezary Krzywda
Analityk, Dzia? Informatyki/
ICT Analyst, ICT Onninen Sp. z o.o.
Tel. +48 42 6768 877,
Mobile +48 502 19 77 61
Fax. +48 42 6768 800
Teolin 18B, Gmina Nowosolna,
92-701 ??D?
Poland
cezary.krzywda@xxxxxxxxxx
www.onninen.pl
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Wilt, Charles
Sent: Monday, October 08, 2007 3:49 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Specify a PRIMARY KEY constraint.
Note: a primary key's field(s) must be unique and not NULL.
You can't have an SQL defined table with a non-unique key
with a DDS physical.przeznaczona jest
HTH,
Charles
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cezary Krzywda
Sent: Monday, October 08, 2007 6:59 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Create table & Create Phisical File
Hello
In DDS I can create key fields using record format "K"
How Can I do it using SQL Create Table ?
Regards
Czarek
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------------------------------
message: 2
date: Mon, 8 Oct 2007 11:33:18 -0700 (PDT)
from: Luis Rodriguez <luis.rodriguez2@xxxxxxxxx>
subject: Re: Create table & Create Phisical File
Czarek,
A SQL index is not usable directly with a SELECT statement.
AFAIK, SELECT can only reference tables and views (LF being
a special type of view). If it makes the table or view
access faster, the DB engine will use the index although
you reference only the Table (or view).
That said, you can use a SQL index with any RPG program,
with the proper op codes (CHAIN, SETLL, etc) and it will
work the same as a "traditional" DDS-defined LF. In fact, a
SQL index has a better performance than a DDS LF.
Hope this helps,
Luis Rodriguez
--- rpg400-l-request@xxxxxxxxxxxx wrote:
----------------------------------------------------------------------
message: 1
date: Mon, 08 Oct 2007 11:18:14 -0300
from: "Raul A. Jager W." <raul@xxxxxxxxxx>
subject: Re: Create table & Create Phisical File
Add the "FROM".
You can't select from an "EVI" index, but the others
options will allow
the select, but the output will not necesarily come
ordered, unless you
use "order by".
Wilt, Charles wrote:
You can't SELECT * IDXFILElogical file object, and you can normally do a
While the index IDXFILE is implemented as an i5/OS
SELECT * FROM MYLF, when MYLF is a DDS defined logical,the system does know there is a difference
between a DDS logical and an SQL index.physical file/table (or a view) on the
When using SQL you should _always_ specify the actual
statement. To provide ordering, add the ORDER BY clauseon your select statement.
Cezary Krzywda
HTH,
Charles
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Sent: Monday, October 08, 2007 10:39 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Table1 - PF
Next I prepare index using SQL
Create IDXFILE
CREATE INDEX Lib1/IDXFILE ON Lib1/Table1 (
S08FIR,OS08KLI,OS08GRPR,OS08IDX,OS08KODR,OS08DOS,OS08MT,OS08DATOD)specified
After that I run sql
Select * From IDXFILE
And I got errors
IDXFILE in Lib1 not table, view, or physical file.
Czarek
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
matt.haas@xxxxxxxxxxx
Sent: Monday, October 08, 2007 4:26 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Create table & Create Phisical File
What did you call the index? Is the library you
you got?during the create in you library list? What's the error
Cezary Krzywda
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
logicalSent: Monday, October 08, 2007 10:25 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
I have run
Select * From IDXFILE
And I had error ?
It seems that INDEX is not the same logical files .
I will try to use INDEX in RPG program
Czarek
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
matt.haas@xxxxxxxxxxx
Sent: Monday, October 08, 2007 4:12 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Create table & Create Phisical File
When you create an index, it can be used just like a
index youfile. All you have to do is specify the name of the
Cezary Krzywdacreated instead of the base table name in your F specs.
Matt
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
usingSent: Monday, October 08, 2007 10:10 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
So
How Can I use Setll , SetGT .? Should I create index
thisCREATE INDEX in SQL ? But the problem is How can I use
Wilt, Charlesindex in RPG ?
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
unique?Sent: Monday, October 08, 2007 4:00 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Unique?
Then you can't have a key on the SQL table.
Sorry, but that's just the way it works.
Is there no combination of current fields that are
can
Even if KEY1,KEY2 aren't unique, if by adding KEY3 you
fieldget a unique key into the file, you can add
KEY3 without needing to change any existing programs.
The only other way would be to a an auto-incrementing
existingto the file, but that would require recompiling all
Cezary KrzywdaRPG programs.
HTH,
Charles
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Wilt, CharlesSent: Monday, October 08, 2007 9:57 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
But fields are not uniqual
Pozdrawiam
Cezary Krzywda
Analityk, Dzia? Informatyki/
ICT Analyst, ICT Onninen Sp. z o.o.
Tel. +48 42 6768 877,
Mobile +48 502 19 77 61
Fax. +48 42 6768 800
Teolin 18B, Gmina Nowosolna,
92-701 ??D?
Poland
cezary.krzywda@xxxxxxxxxx
www.onninen.pl
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
NULL.Sent: Monday, October 08, 2007 3:49 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Create table & Create Phisical File
Specify a PRIMARY KEY constraint.
Note: a primary key's field(s) must be unique and not
keyYou can't have an SQL defined table with a non-unique
Cezary Krzywdalike you can
with a DDS physical.
HTH,
Charles
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
"K"Sent: Monday, October 08, 2007 6:59 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Create table & Create Phisical File
Hello
In DDS I can create key fields using record format
How Can I do it using SQL Create Table ?
Regards
Czarek
<SNIP>
Luis Rodriguez
IBM Certified Systems Expert
eServer i5 iSeries Technical Solutions
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