× 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.


  1.  Home
  2. MIDRANGE-L
  3. March 2021

Re: SQL on V4: Index Optimization (Hobbyist question)

Hello,

Am 24.03.2021 um 18:53 schrieb x y <xy6581@xxxxxxxxx>:

Another option: make 20 indexes over each character of the 20-byte field
and use CASE in your WHERE. While not a best practice, I'll bet this
approach would scream.

Thank you. This also has been suggested to me in a private message. I ask the same question here: How to create indexes as you suggest? I haven't found something helpful in the older "DB2 Universal Database for iSeries SQL Reference Version 5" PDF.

And, may I ask for a (simple) example for the CASE in a WHERE for this kind of index?

:wq! PoC


As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
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.