× 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.



David;

select client, date, amount
from table
where client = 'Client1'
order by date desc
fetch first row only

Duane Christen


--


Duane Christen
Senior Software Engineer
(319) 790-7162
Duane.Christen@xxxxxxxxxx

Visit PAETEC.COM


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of David FOXWELL
Sent: Tuesday, December 01, 2009 4:24 AM
To: Midrange Systems Technical Discussion
Subject: SQL extract a row from a set of rows

Hi,

A result of an sql command is returning multiple rows from a transaction file like this :

Client Date Amount
Client1 79899898 100
Client1 79909898 10
Client1 79919898 100
Client1 79929898 900

How can I get the amount from the first row? This corresponds to the last entry, as the date field is numeric and equal to 99999999 - date field. I have a key on this field, but no way of joining to it from my client file.

At the moment, I'm running a WITH T As ( ) kind of expression on the transaction file to get the minimum date value for a client and then joining to that.

This makes for a very long execution time. Surely there's a better way?

Thanks
--
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/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 ...

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.