1. MySQL FullText Search

2. 條件
engine : MyISAM
column : CHAR, VARCHAR, TEXT
config : ft_min_word_len

3. 建立資料庫
CREATE TABLE t
(
content CHAR(255),
FULLTEXT INDEX (content) WITH PARSER my_parser
) ENGINE=MyISAM;
ALTER TABLE t ADD FULLTEXT INDEX (content) WITH
PARSER my_parser;

4. 檢索模式
Natural Language (Stopwords)
BOOLEAN (+ - ~ > <)

5. 中文檢索
(MySQL 預設不支援中文檢索)
tokenizer + text encode (base64, unicode,
urlencode)
mysql plug-in (mecab(詞庫)、bigram(N-gram))

6. 測試
SELECT * FROM t WHERE content LIKE '%台北%';
4000筆 : 0.060 s
12000筆 : 0.15 s
SELECT * FROM t WHERE MATCH(content) AGAINST('+"
台北"' IN BOOLEAN MODE);
4000筆 : 0.016 s
12000筆 : 0.04 s

8. Reference
MySQL :: MySQL 5.0 Reference Manual :: 12.9 Full-Text Search Functions
http://dev.mysql.com/doc/refman/5.0/en/fulltext-search.html
y-ken/mysqlftppc-mecab
https://github.com/y-ken/mysqlftppc-mecab
使用 N-gram 演算來支援 MySQL 中文全文檢索
https://github.com/y-ken/mysqlftppc-bigram/blob/master/INSTALL
FullText search of MySQL supported for SQLAlchemy
https://github.com/mengzhuo/sqlalchemy-fulltext-search