| Subject | Re: [firebird-support] Speed of comparing one field to another |
|---|---|
| Author | Louis Kleiman |
| Post date | 2016-09-13T15:14:02Z |
You could create a denormalized field that contains the difference of those values (updated by a trigger, perhaps), and you can put an index on that new field. Then change the query to find rows where [new difference field] < 0.
Make sense?
On Tue, Sep 13, 2016 at 9:37 AM Dimitry Sibiryakov sd@... [firebird-support] <firebird-support@yahoogroups.com> wrote:13.09.2016 15:26, Maya Opperman maya@... [firebird-support] wrote:
> Is there an index I could create to speed up the loading?
No.
--
WBR, SD.
------------------------------------
------------------------------------
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Visit http://www.firebirdsql.org and click the Documentation item
on the main (top) menu. Try FAQ and other links from the left-side menu there.
Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
------------------------------------
Yahoo Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/firebird-support/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/firebird-support/join
(Yahoo! ID required)
<*> To change settings via email:
firebird-support-digest@yahoogroups.com
firebird-support-fullfeatured@yahoogroups.com
<*> To unsubscribe from this group, send an email to:
firebird-support-unsubscribe@yahoogroups.com
<*> Your use of Yahoo Groups is subject to:
https://info.yahoo.com/legal/us/yahoo/utos/terms/