× 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.


  • Subject: Re: Timestamp field
  • From: "Eric N. Wilson" <doulos1@xxxxxxxx>
  • Date: Thu, 20 Jan 2000 17:55:31 -0800

Or you could use a data area or a million of other things. Oh how I wish IBM
would make an auto increment data type for us!!!


______________________________________________
Eric N. Wilson
President
Doulos Software & Computer Services
2913 N Alder St.
Tacoma WA 98407


----- Original Message -----
From: "James David Rich" <james@dansfoods.com>
To: <RPG400-L@midrange.com>
Sent: Thursday, January 20, 2000 4:51 PM
Subject: RE: Timestamp field


>
> On Thu, 20 Jan 2000, Buck Calabro wrote:
> > Marc,
> > I would not depend on using the timestamp as a unique key.  As you have
> > found out, on a sufficiently fast enough machine you can get duplicates.
> > The upshot of this is that even if it works today, when the next
generation
> > of CPUs come out it might fail.
> >
> > I would suggest adding another field (sequence number) if you have a
need to
> > discriminate between each record.  If you really truly need the extra
three
> > digits, consider using SQL to do your insert, as in:
> > insert into xxx (field, timstp) values(:field, CURRENT TIMESTAMP)
>
> If a unique key is needed and it can be any number how about duplicating
> something like what MySQL does?  You can define a field as INT
> AUTO_INCREMENT PRIMARY KEY.  I think you can do something like this in RPG
> by creating a field in your database file that is say 10,0 (or however big
> you need it) and make it the unique key.  Then when you want to add
> another record to the file lock the file, read previous, add 1, write the
> new record, and release the file.
>
> James Rich
> james@dansfoods.com
>
> +---
> | This is the RPG/400 Mailing List!
> | To submit a new message, send your mail to RPG400-L@midrange.com.
> | To subscribe to this list send email to RPG400-L-SUB@midrange.com.
> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
david@midrange.com
> +---
>

+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---


As an Amazon Associate we earn from qualifying purchases.

This thread ...

Replies:

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.