× 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.



As a general rule, avoid SELECT *. Select just the fields you need
instead. For example if you do a SELECT ICLAS, COUNT(*) AS NbrIclas FROM
IIM GROUP BY ICLAS and you have an index on iclas then the SQL optimizer
only has to read the index and never process the table. I know, I know,
the data is not in an index - it's in the table. Maybe I am saying it
wrong, but it just makes more sense in iNav's Visual Explain. Go listen
to Tom McKinley from IBM sometime and get the details. (John Sears for
the next generation.)
Joe, I am sure that you just said that because that wasn't the meat of
your explanation and you didn't want to get sidetracked. Maybe replace
the asterisk by an ellipses?

Rob Berendt

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.