Thread:Project:Support desk/Unexpected non-MediaWiki exception encountered, of type "Exception" /extensions/yambe/yambe.php:553/reply (2)

Please find the content of tag I got from this link "http://edn-wki-02/assyst10SP4Wiki/index.php/Lucene_Operators_in_assyst?action=edit"

 Global_Free_Text_Searching|Global Free Text Searching Search_Engine_-_How_Search_Engine_Works|Search Engine - How Search Engine Works Knowledge_Search_Form|Knowledge Search Form  -- Lucene searching capabilities are integrated into assyst Search which is used in Free Text Searching and in Knowledge in assyst.

This allows search queries to be built around the syntax operators. The commonly used operators are:
 * Single Term - A search based on single words, such as for . Where a number of single words are listed in a search, such as   then these are presumed to be using the   Boolean Operator.
 * Phrase - A group of words bounded by double quote marks  that will be searched for as a perfect match, such as.
 * Boolean Operators - These operators can be used between Singled Terms and Phrases to further define the search;
 * or  - Both terms will be found in the search results, such as.
 * or  - Either one term or another will be found in the search results, such as.
 * or  - A term will not be present in the search results, such as     where   results will only be returned if the Knowledge Procedure does not contain the phrase.
 * Note: Curved brackets  can be used to group operator groups, such as.
 * Wildcards - These can be used to substitute unknown characters in the search;
 * - This wildcard can be used in the place of a range of unknown characters, such as  where   will be returned along with ,   and.
 * - This wildcard can be used in the place of an individual character, with several being used as required, such as  where Screen will be returned along with   and   but not.

A more detailed explanation of the full Lucene Search syntax is provided in Lucene's Query Parser Syntax PDF.

Lucene and Boolean Logic