0001259: Negative Assertion operator (aka NOT NEAR)

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Date Submitted

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0001259

Sphinx

general

public

2012-07-27 15:45

2013-05-07 15:32

Reporter

barryhunter

Assigned To

Priority

normal

Severity

feature

Reproducibility

N/A

Status

new

Resolution

open

Platform

OS Version

Product Version

2.0.2-beta

Target Version

Fixed in Version

Summary

0001259: Negative Assertion operator (aka NOT NEAR)

Description

Basically a new operators to be able to run queries of the form "search for word X except when followed by Y"

Example:
match documents that do contain "beach", but not when its just part of "Beach
Street" phrase.

(just excluding the phrase, excludes all documents, even if they contain "beach" on its own elsewhere in the document)

In regular expression terms, would be an Assertion
http://www.php.net/manual/en/regexp.reference.assertions.php [^]
example: Beach(?! Street)

(I dont think any need for positive assertions with sphinx, only negative assertions)

Additional Information

background information

http://sphinxsearch.com/forum/view.html?id=9869 [^]

Could be done as a 'NOTBEFORE' and 'NOTAFTER' but a general NOTNEAR would probably be most useful.

Issue History
Date Modified	Username	Field	Change
2012-07-27 15:45	barryhunter	New Issue
2013-05-07 15:32	rpilbeam	Issue Monitored: rpilbeam

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