× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.



I'm with ya. So creating an index and doing a RGZPFM (you got RPG on the mind) 
would likely be faster than an INSERT INTO selecting every record from the 
first file with multiple ORDER BY fields, and ending up with an extra file. I 
like it! Now, can the fields in the index be substrings? Doh! Doesn't look like 
it, but they can in an LF, so that should work. Thanks, Eric, and everyone else 
too!

> -----Original Message-----
> From: DeLong, Eric [mailto:EDeLong@xxxxxxxxxxxxxxx]
> Sent: Wednesday, April 30, 2003 3:02 PM
> To: 'Midrange Systems Technical Discussion'
> Subject: RE: Sorting
> 
> 
> Duh,
> 
> Sorry, gotta pay more attention.....
> 
> SQL to build the index (to set the sort orders) at runtime, 
> then RPGPFM with
> KEYFILE pointing to the index you built in SQL.
> 
> Eric DeLong
> Sally Beauty Company
> MIS-Project Manager (BSG)
> 940-898-7863 or ext. 1863
> 
> 
> 
> -----Original Message-----
> From: DeLong, Eric [mailto:EDeLong@xxxxxxxxxxxxxxx]
> Sent: Wednesday, April 30, 2003 1:46 PM
> To: 'Midrange Systems Technical Discussion'
> Subject: RE: Sorting
> 
> 
> Zak,
> 
> How many key fields?  
> 
> Is creating a new logical file out of the question?  If the 
> intent to have
> PF in a specific record order, why not RGZPFM with the KEYFILE parm
> referring to your logical....
> 
> 
> 
> Eric DeLong
> Sally Beauty Company
> MIS-Project Manager (BSG)
> 940-898-7863 or ext. 1863
> 
> 
> 
> -----Original Message-----
> From: Metz, Zak [mailto:Zak_Metz@xxxxxx]
> Sent: Wednesday, April 30, 2003 1:32 PM
> To: Midrange Systems Technical Discussion
> Subject: Sorting
> 
> 
> I need to sort some files. The sorts are dynamic and the keying will
> only be known at run-time. The files often have multi-million record
> counts and an average reclen of something like 1k.
> 
> I will be starting with a PF and need to either sort into a 2nd PF or
> preferably back into the same PF. Those are requirements that 
> I have no
> control over.
> 
> Currently this is done with FMTDTA, but we are running into the key
> length limitation, and so looking for other solutions.
> 
> Thoughts:
> 
> 1. Create an LF and copy from that into a 2nd PF.
> - But I would have to write DDS source, compile it, then copy, then
> delete the LF. Too many steps.
> 
> 2. Build an OPNQRYF string and copy from that into a 2nd PF.
> - But building the OPNQRYF string is tedious and error-prone.
> 
> 3. Write something in C to drive QSORT(), sorting back into 
> the original
> file.
> - Seems like a good idea, but do I really want to process a
> multi-million record file this way?
> 
> 4. Use some other "canned" sorting function.
> 
> Any comments on these methods, or any other ideas? The OPNQRYF is the
> only option I can think of that is somewhat "clean."
> NOTICE: This E-mail may contain confidential information. If 
> you are not
> the addressee or the intended recipient please do not read this E-mail
> and please immediately delete this e-mail message and any attachments
> from your workstation or network mail system. If you are the addressee
> or the intended recipient and you save or print a copy of this E-mail,
> please place it in an appropriate file, depending on whether
> confidential information is contained in the message.
> 
> 
> _______________________________________________
> This is the Midrange Systems Technical Discussion 
> (MIDRANGE-L) mailing list
> To post a message email: MIDRANGE-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo.cgi/midrange-l
> or email: MIDRANGE-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.
> 
> 
> _______________________________________________
> This is the Midrange Systems Technical Discussion 
> (MIDRANGE-L) mailing list
> To post a message email: MIDRANGE-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo.cgi/midrange-l
> or email: MIDRANGE-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.
> 
> 
> _______________________________________________
> This is the Midrange Systems Technical Discussion 
> (MIDRANGE-L) mailing list
> To post a message email: MIDRANGE-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo.cgi/midrange-l
> or email: MIDRANGE-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.
> 
> 


As an Amazon Associate we earn from qualifying purchases.

This thread ...


Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.