Re: SQL and UNION: why do some UNIONs significantly inflate the processing time, while others don't? -- MIDRANGE-L

× 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: SQL and UNION: why do some UNIONs significantly inflate the processing time, while others don't?
From: Vern Hamberg <vhamberg@xxxxxxxxxxxxxxx>
Date: Fri, 21 May 2021 14:24:06 -0500
List-archive: <https://archive.midrange.com/midrange-l/>
List-post: <mailto:midrange-l@lists.midrange.com>
List-subscribe: <https://lists.midrange.com/mailman/listinfo/midrange-l>, <mailto:midrange-l-request@lists.midrange.com?subject=subscribe>
List-unsubscribe: <https://lists.midrange.com/mailman/options/midrange-l>, <mailto:midrange-l-request@lists.midrange.com?subject=unsubscribe>

++++++1

On 5/21/2021 11:25 AM, Charles Wilt wrote:

On Fri, May 21, 2021 at 9:33 AM James H. H. Lampert <
jamesl@xxxxxxxxxxxxxxxxx> wrote:

I actually tried UNION ALL, and it had little effect.

And as to Visual Explain (it's been so long I'd forgotten what it was
called!), well, the last time we were an ACS shop, it was still called
"PC Support."

You should have ACS. Most of it doesn't require a license.
I believe only 5250 and data transfer portions require a license.

Charles

As an Amazon Associate we earn from qualifying purchases.

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.