Sun Microsystems Netscape Enterprise Server, Руководство администратора

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Chapter 16, Using Search 429
Using the Query Operators
less than or equal
to (<=) Finds documents in which a document
field is less than or equal to a specific
date or numeric value.
Created <= 6-30-96
Finds documents created on or before June
30, 1996.
<MATCHES>
Finds documents in which a string in a
document field matches the character
string you specify.
Ignores documents that contain partial
matches.
Does not rank documents for relevance.
<MATCHES> employee
Finds documents containing
employee
or
any of its stemmed variants such as
employees .
<NEAR>
Finds documents that contain the
specified words. The closer the terms are
to each other in the document, the
higher the document’s score.
stock <NEAR> purchase
Finds any document containing both stock
and purchase , but gives a higher score to a
document that has stock purchase than to
one that has purchase supplies and stock
up .
<NEAR/N>
Finds documents in which two or more
specified words are within N number of
words from each other. N can be an
integer up to 1000. Also ranks the
documents for relevance based on the
words’ proximity to each other.
stock <NEAR/1> purchase
Finds documents containing the phrases
stock purchase and purchase stock .
Ignores documents containing phrases like
purchase supplies and stock up because
stock and purchase do not appear next to
each other.
When N is 2 or greater, finds documents
that contain the words within the range
and gives a higher score for documents
which have the words closer together.
NOT
Finds documents that do not contain a
specific word or phrase.
Note: You can use
NOT
to modify the
OR
or the
AND
operator.
surf AND NOT beach
Finds documents containing the word surf
but not the word beach .
Table 16.4 Query language operators
Operator Description Examples