RE: Even more embedded SQL.... -- RPG400-L


I don't know your file sizes and I'm certainly not knocking SQL but it
seems to me that if you don't know the sort columns at run time you will
have to dynamically build, prepare, and run an SQL statement each time a
new sort sequence is requested.  That could be a really slow way to do
it.  I guess you could use the CASE statement but that takes you down
the same path as multiple logicals.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
Sent: Thursday, August 03, 2006 10:03 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Even more embedded SQL....


No the WHOLE file of data


Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx


                                                             
            
             <Rick.Chevalier@a                               
            
             mericredit.com>                                 
            
             Sent by:                                        
          To
             rpg400-l-bounces@        
<rpg400-l@xxxxxxxxxxxx>            
             midrange.com                                    
          cc
                                                             
            
                                                             
     Subject
             08/03/2006 10:50          RE: Even more embedded
SQL....     
             AM                                              
            
                                                             
            
                                                             
            
             Please respond to                               
            
              RPG programming                                
            
              on the AS400 /                                 
            
                  iSeries                                    
            
             <rpg400-l@midrang                               
            
                  e.com>                                     
            
                                                             
            
                                                             
            





So what are you sorting?  Just the records on the screen?

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Johnny Johnson
Sent: Thursday, August 03, 2006 9:47 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: Even more embedded SQL....

OK, maybe I misstated a little.  I only fill one page at a

time.  When

the user pages down I fill another page, and so on.  If the

user pages

down 10 pages, then ten pages are still filled and I let

the subfile

handle the page up.
Typically, I've found that a user only want s to see one or

two pages

anyway.  If they need to see something farther down the file, they
will enter what it is they want to see.  If they want to

see something

farther up the file they have to enter the starting point

for filling

the subfile.

Johnny Johnson
Hub Group, Inc.





             Alan Shore

             <AlanShore@xxxxxx

             om>
          To
             Sent by:                  RPG programming on the
AS400 /
             rpg400-l-bounces@         iSeries
<rpg400-l@xxxxxxxxxxxx>
             midrange.com
          cc



     Subject
             08/03/2006 09:39          Re: Even more embedded
SQL....
             AM





             Please respond to

              RPG programming

              on the AS400 /

                  iSeries

             <rpg400-l@midrang

                  e.com>










How do you handle page-up? I think (correct me if I am

wrong) that you

use FIND RELATIVE?
How do you handle position to? That one I am having difficulty in
working out within SQL?



Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx



             Johnny Johnson
             <jjohnson@hubgrou
             p.com>
          To
             Sent by:                  RPG programming on

the AS400 /

             rpg400-l-bounces@         iSeries

<rpg400-l@xxxxxxxxxxxx>

             midrange.com
          cc
                                       RPG programming on

the AS400 /

                                       iSeries
<rpg400-l@xxxxxxxxxxxx>,
             08/03/2006 10:30          rpg400-l-bounces@xxxxxxxxxxxx
             AM
     Subject
                                       Re: Even more

embedded SQL....


             Please respond to
              RPG programming
              on the AS400 /
                  iSeries
             <rpg400-l@midrang
                  e.com>






No, I use a one page at a time subfile.  Most of the files

I use this

for have a million records.  I use the sql loop the same

way I would a

loop with READ or READE.

First I build the sql statement based on what the user selects...
Second I do the following, where wrkSQL is the sql

statement, because

the sql statement changes from user to user...
C/exec sql
C+  close csr
C/end-exec

C/exec sql
C+  prepare sqlstmt from :wrkSql
C/end-exec

C/exec sql
C+  open csr
C/end-exec

Then as my sql read loop(for lack of a better term), where

sqlFile is

the data structure based on the externally defined file I

am reading

from.

C/exec sql
C+  fetch next from csr into :sqlFile
C/end-exec
Dow while sqlcod = *zero
   *
   *<subfile logic>
   *
C/exec sql
C+  fetch next from csr into :sqlFile
C/end-exec
enddo

Johnny Johnson
Hub Group, Inc.




             Alan Shore
             <AlanShore@xxxxxx
             om>
          To
             Sent by:                  RPG programming on

the AS400 /

             rpg400-l-bounces@         iSeries

<rpg400-l@xxxxxxxxxxxx>

             midrange.com
          cc


     Subject
             08/03/2006 09:21          Re: Even more

embedded SQL....

             AM


             Please respond to
              RPG programming
              on the AS400 /
                  iSeries
             <rpg400-l@midrang
                  e.com>







Johnny - thanks for your reply, but I am betting that you do a load
all sub-file, and NOT a page at a time sub-file, which is

what I need

for 15,000 or more records.

I'm pretty sure that what I need to load page at a time is

FIND NEXT

FIND CURRENT FIND RELATIVE for things as Page up, Page Down etc.
but I'm not too sure how to do a position to within the

sub-file using

SQL


Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx




             Johnny Johnson
             <jjohnson@hubgrou
             p.com>
          To
             Sent by:                  RPG programming on

the AS400 /

             rpg400-l-bounces@         iSeries

<rpg400-l@xxxxxxxxxxxx>

             midrange.com
          cc


     Subject
             08/03/2006 10:08          Re: Even more

embedded SQL....

             AM


             Please respond to
              RPG programming
              on the AS400 /
                  iSeries
             <rpg400-l@midrang
                  e.com>






I've always just built my sql statement based on what
column(s) the user selects to sort and then just filled the subfile
sorted the way the sql returns the data.
I'm not sure if this is what you are thinking, but it seems to work
really well.

Johnny Johnson
Hub Group, Inc.




             Alan Shore
             <AlanShore@xxxxxx
             om>
          To
             Sent by:                  RPG programming on

the AS400 /

             rpg400-l-bounces@         iSeries

<rpg400-l@xxxxxxxxxxxx>

             midrange.com
          cc
                                       RPG programming on

the AS400 /

                                       iSeries
<rpg400-l@xxxxxxxxxxxx>,
             08/03/2006 08:53          rpg400-l-bounces@xxxxxxxxxxxx
             AM
     Subject
                                       Even more embedded SQL....

             Please respond to
              RPG programming
              on the AS400 /
                  iSeries
             <rpg400-l@midrang
                  e.com>












  Hi All,

  I have been given a project that requires the need to display,
within a subfile, the data from 2
  separate files with the ability to sort that data from

any number of

different columns. So I
  thought to myself, this smacks of embedded SQL and

Dynamic Sorting

Subfiles. The unfortunate
  thing is that the data I have to display is over 15,000

records long

(and
growing) so if anyone
  can help me, I am looking for an example of embedded SQL

and Dynamic

Sorting Subfiles - Page at
  a time (with the ability to position to a particular

piece of data)"


  Some title for an article huh? If anyone has an example

of what is

required, or could point me
  in some direction, I would be very grateful.










Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx
--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.




--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.


--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.




--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.


--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.




--
This is the RPG programming on the AS400 / iSeries

(RPG400-L) mailing

list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx Before posting,

please take a

moment to review the archives at

http://archive.midrange.com/rpg400-l.


Privileged and Confidential.  This e-mail, and any
attachments there to, is intended only for use by the
addressee(s) named herein and may contain privileged or
confidential information.  If you have received this e-mail
in error, please notify me immediately by a return e-mail and
delete this e-mail.  You are hereby notified that any
dissemination, distribution or copying of this e-mail and/or
any attachments thereto, is strictly prohibited.

--
This is the RPG programming on the AS400 / iSeries (RPG400-L)
mailing list To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.


Privileged and Confidential.  This e-mail, and any attachments there to, is 
intended only for use by the addressee(s) named herein and may contain 
privileged or confidential information.  If you have received this e-mail in 
error, please notify me immediately by a return e-mail and delete this e-mail.  
You are hereby notified that any dissemination, distribution or copying of this 
e-mail and/or any attachments thereto, is strictly prohibited.