×
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.
Richard,
Yes, you are correct. If you are only selecting out a small subset the difference becomes much smaller.
When you say this could be slow, doesn't the SQL engine first evaluate the ID = 1 to limit the subset of records before processing the 30-40 selected records ?
The optimizer can simply better utilize it's data structure if it is simply grouping values over keyed fields. Our business groups like to try and summarize 96M active service records from 135M all service file down to a single record for each of the 5M active customers from 15M all customer file. So it is important for us to remove all excessive processing cycles.
Jim
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.
midrange.com
