Can't say I've tested it on IBM i...

But this guy tested it on MS SQL Server..

My Number table has a PK, so no worries about duplicates.

I'll see about running some benchmarks at some point..


On Tue, Sep 29, 2015 at 1:35 PM, CRPence <crpbottle@xxxxxxxxx> wrote:

On 29-Sep-2015 10:58 -0600, Charles Wilt wrote:

<<SNIP>> there is (probably) still a performance benefit to having
the numbers table pre-generated instead of generating it on the fly
for every request. <<SNIP>>

The dynamically produced table as RCTE is a true-temporary
temporary-object and may easily outperform a reference to a pre-existing
TABLE of numbers, esp. if the data must be faulted. And nobody can
delete-from, insert-into, or update the data in the dynamic TABLE like they
potentially could with a permanent database file; perhaps onto which some
additional protections [e.g. triggers, ALWUPD(*NO) ALWDLT(*NO), etc.?]
should be placed, to prevent possible unexpected results.?

Regards, Chuck

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,
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives

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 1997-2022 by 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.