I'm not Dave but I give it a try. It depends on the type of database you
are working with. They all have rules about how they use indexes. On some
what you are saying is true on others they will search on one index then do
a scan on the dataset.
Thank You,
Peter
Peter J. MacDonald II
Creative Computing, Inc.
100 Middle Street
Lincoln, RI 02865
Phone: 401.727.0183 x123
Fax: 401.727.4998
Portable: 401.965.3661
E-MAIL: [EMAIL PROTECTED]
Web Page: www.creatcomp.com
-----Original Message-----
From: Philip Arnold - ASP [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 12, 2001 05:58
To: CF-Talk
Subject: RE: Database Indexing & Primary Keys
> If I understand your question correctly, yes, you'll generally want your
> foreign keys to be indexed. Any fields commonly used for filters or joins
> should be indexed, if those fields will benefit from an index.
Dave,
Just wondering if you can answer me this on Indexing;
If you have several Indexes setup only on individual fields, do these effect
queries which use several fields which have different indexes, or do we need
to build an index with all of the effected fields?
e.g.
Index on CompanyName
Index on PersonName
select PersonName, CompanyName
where PersonName like '%smith%' and CompanyName like '%IBM%'
Would this use the 2 indexes, or would I need an index on PersonName and
CompanyName?
Philip Arnold
Director
Certified ColdFusion Developer
ASP Multimedia Limited
T: +44 (0)20 8680 1133
"Websites for the real world"
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