|
Vern,
Glad I could help! LOL
Can you give me a link to the manual that you were looking at? I was
looking at the DB2 SQL Reference for Version 7 and under the VALUES INTO
statement is this:
This statement can be embedded only in an application program. It is an
executable statement that cannot be dynamically prepared.
'Course, the copyright on this manual is 13 years old.
Not trying to doubt you. I'm guessing I'm not looking at the latest
reference manual and that would be handy. Thanks!
Bill
On Wed, Sep 17, 2014 at 10:17 AM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>
wrote:
LOL - now you made me dig into the manual!
I think - and should have noticed - that Birgitta was recommending the
VALUES INTO statement - so it's VALUES [some subselect or expression] INTO
[host variables]
And that one can be dynamically prepared.
It's always worth something to me to have to go digging!! Thanks!
Vern
On 9/17/2014 8:35 AM, Bill Howie wrote:
Vern/Birgitta,--
I just took a quick look in the SQL reference. It says that the VALUES
statement cannot be dynamically prepared, which is what is happening in
this case. Is that true?
Bill
On Wed, Sep 17, 2014 at 9:20 AM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx
wrote:
Hi Bill
VALUES is a very useful statement - there is more detail in the SQL
reference, that is not practical to repeat all here - so I heartily
recommend looking it up.
A similar statement is SET, as I recall - check me by looking at the
reference - I've used it in an embedded SQL RPG program to get a
scan/replace before IBM provided %scanrpl - it requires that whatever
function you use returns a single value. Here's an idea of it - it does
use
a host variable -
set :currtimestamp = current timestamp;
That gets microseconds, while I think RPG returned only milliseconds (at
one time, at least).
So there are lots of things that come from SQL that you can use to set
variables in RPG directly.
HTH
Vern
On 9/17/2014 7:31 AM, Bill Howie wrote:
Birgitta,
Thanks for the info. So "VALUES" is a separate SQL statement then? IThis is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L)
don't need an "INSERT INTO" or anything like that before it?
Bill
On Wed, Sep 17, 2014 at 1:47 AM, Birgitta Hauser <
Hauser@xxxxxxxxxxxxxxx>
wrote:
Correction the closing parenthesis at the end must be removed and
replaced
with a quote.
MySQLTEXT = 'Values(Select RRN(a), ' + %Trim(Field_Name) +
' From ' + %Trim(Library_Name) + '/' +
%Trim(File_Name) +
' a Where RRN(a) = 1) ' +
' into ?, ?';
Mit freundlichen Grüßen / 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!"
-----Ursprüngliche Nachricht-----
Von: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von
Birgitta
Hauser
Gesendet: Wednesday, 17.9 2014 06:52
An: 'RPG programming on the IBM i (AS/400 and iSeries)'
Betreff: AW: Embedded SQL question
SELECT INTO cannot be used in composition with dynamic SQL.
You either need a cursor, performing a PREPARE, DECLARE, OPEN, FETCH
and
CLOSE statement.
Or VALUES INTO which is supported in conjunction with dynamic SQL
MySQLTEXT = 'Values(Select RRN(a), ' + %Trim(Field_Name) +
' From ' + %Trim(Library_Name) + '/' +
%Trim(File_Name) +
' a Where RRN(a) = 1) +
' into ?, ?);
Exec SQL Prepare DynSQL From :MySQLText;
Exec SQL Execute DynSQL using :HostVarRRN, :HostVarField;
Mit freundlichen Grüßen / 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!"
-----Ursprüngliche Nachricht-----
Von: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von
Bill
Howie
Gesendet: Wednesday, 17.9 2014 06:35
An: rpg400-l@xxxxxxxxxxxx
Betreff: Embedded SQL question
Hello all,
I'm trying to use dynamic embedded SQL to retrieve a value in a
program.
I was originally trying to use host variables for the needed data but
then
I
found out that you can't use host variables in dynamic SQL and that you
have to use parameter markers instead. So here's what I have:
MySQLText = 'Select rrn(a), a.' + %Trim(Field_Name) +
' Into ?,?' + ' From ' +
%Trim(Library_Name) + '/' + %Trim(File_Name) +
' a where rrn(a) = 1';
exec sql
SET OPTION
commit=*none,
datfmt=*iso;
exec sql prepare selectRecord from :MySQLText; exec sql execute
selectRecord using :rrn,:OldCompany;
When I run the program in debug, the MySQLText field looks like this:
Select rrn(a), a.CONO15 Into ?,? From COPYAULT2/INP15 a wher e rrn(a)
= 1
and I get the following errors:
Token ? was not valid. Valid tokens: : <IDENTIFIER>.
Prepared statement SELECTRECORD not found.
I'm stumped as to what to do from here. This SQL statement should
yield
one record (and does when run interactively) and the thing I'm trying
to
grab is the value in :OldCompany.
Any help would be MOST appreciated. Thanks!
Bill
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