搜索引擎使用php，InnoDB Engine Mysql

Question

SELECT firstname, lastname,comments 
FROMusers 
WHERE MATCH(firstname,lastname,comments) 
AGAINST('$searchterm')

I tried the above one as query for search engine ,but mysql says FULL-TEXT INDEXING is supported only on MYISAM ,Engine i am using is innoDB,Please tell me the best way of coloumn INDEX searching ON InnoDB Engine.

Answer 1

Based on my knowledge, MySQL FTS has been available for InnoDB since version 5.6 ( http://dev.mysql.com/tech-resources/articles/whats-new-in-mysql-5.6.html )

You should take a look at MySQL Fulltex search document here http://dev.mysql.com/doc/refman/5.5/en/fulltext-search.html

Basically, I think you should understand what is 'index' and how MySQL do indexing. This article is very useful for helping understand the mechanism behind MySQL fulltext search http://dev.mysql.com/doc/internals/en/full-text-search.html

There are several important concepts in full-text search:

1. Boolean mode
2. Natural language mode
3. I also recommend you read about stopwords list in MySQL FTS.
4. System variable likes ft_min_word_len is also important.

After understanding these things, I think you will know how to apply MySQL fulltext search properly.