To do an exact element value match, you can do a range query using "=" as a 
comparator, or a cts:element-value-query with the "exact" parameter.  The first 
uses a range index to resolve it; the latter uses a term list.  The range index 
you have to configure by the QName; the term list is always present.  The range 
index can compare using a collation; the term list for "exact" is just a 
codepoint comparison.

To do a search-style match (i.e. ignoring whitespace, punctuation, case, 
diacritics, etc) you'll want to use cts:element-value-query and pass the 
appropriate parameters on what should and shouldn't be sensitive.  It'll then 
resolve using term lists.

-jh-

On Dec 16, 2010, at 9:47 AM, Tim Meagher wrote:

> I understand the usefulness of range indexes in MarkLogic for getting a 
> unique & searchable list of values for an indexed element using lexicon 
> searches, but I'm not sure I understand the benefit of indexing for 
> non-lexicon searches using cts:search and cts:contains.  For example, to 
> perform a cts:search on a particular title value, is setting a range index on 
> the title element sufficient to improve performance?
>  
> Thanks ahead of time,
>  
> Tim Meagher
>  
> _______________________________________________
> General mailing list
> [email protected]
> http://developer.marklogic.com/mailman/listinfo/general

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