I have again updated the search engine in order to utilize new technologies in MySQL 4.0.1. New features include ability to search by relevance, option to search parent posts only, option to show a preview of post body with results, and new operators. Here is a rundown of the current supported operators...
+
A leading plus sign indicates that this word must be present in every post returned.
-
A leading minus sign indicates that this word must not be present in any post returned.
(no operator)
By default (when neither + nor - is specified) the word is optional, but the posts that contain it will be rated higher.
> <
These two operators are used to change a word's contribution to the relevance value that is assigned to a post. The > operator increases the contribution and the < operator decreases it. See the example below.
( )
Parentheses are used to group words into subexpressions. Parenthesized groups can be nested.
~
A leading tilde acts as a negation operator, causing the word's contribution to the post relevance to be negative. It's useful for marking noise words. A post that contains such a word will be rated lower than others, but will not be excluded altogether, as it would be with the - operator.
*
An asterisk is the truncation operator. Unlike the other operators, it should be appended to the word.
"
A phrase that is enclosed within double quote (") characters matches only posts that contain the phrase literally, as it was typed.
The following examples demonstrate some search strings that use boolean full-text operators:
apple banana
Find posts that contain at least one of the two words.
+apple +juice
Find posts that contain both words.
+apple macintosh
Find posts that contain the word "apple", but rank rows higher if they also contain "macintosh".
+apple -macintosh
Find posts that contain the word "apple" but not "macintosh".
+apple +(>turnover <strudel)
Find posts that contain the words "apple" and "turnover", or "apple" and "strudel" (in any order), but rank "apple turnover" higher than "apple strudel".
apple*
Find posts that contain words such as "apple", "apples", "applesauce", or "applet".
"some words"
Find posts that contain the exact phrase "some words" (for example, posts that contain "some words of wisdom" but not "some noise words"). Note that the '"' characters that surround the phrase are operator characters that delimit the phrase. They are not the quotes that surround the search string itself.
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I'm a whorePerformingGreat Mills HS: '92-'96 -> Front Ensemble, Plates, Snare |
Baltimore Ravens: '00-'03 -> Snare
TeachingThomas Stone HS: '97-'99 |
Patuxent HS: '99