Re: mySQL FULL-TEXT search

[email protected] Wed, 1 Nov 2006 20:51:25 +0100
Newsgroups gmane.comp.db.mysql.windows
Organization Skupina SGH
Message-ID <[email protected]>
Additionally,

  I thought that I solved my problem with the following sollution:

SELECT *
FROM maillog
WHERE MATCH (log) AGAINST ('some_string')
AND log LIKE '%another_string%'

  BUT somehow this query returns results which include ANY of strings,
  like there was "OR" operator.

  How to do query with
MATCH (log) AGAINST (...)
  having in mind that I do NOT search only for whole words, but also
  within PART of words (like, search for "user" in "name.user@domain")




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*** MY ORIGINAL MESSAGE ***
---------------------------
Hello experts,

 I have a problem with full text search. Here is my situation:

 In DB I have LOG records in "maillog" table,
 with FULLTEXT index on "log" row.

 When I do a search, I do:
 
SELECT *
FROM maillog
WHERE MATCH (log) AGAINST ('some_string' IN BOOLEAN MODE)

 This is OK. Query is fast (0.15 sec on 500.000 records).
 BUT when I want to narrow the search and include additional search
 string, I have problems:

SELECT *
FROM maillog
WHERE MATCH (log) AGAINST ('some_string +another_string' IN BOOLEAN MODE)

 The number of returned results are the same in both queries. Only
 relevance changes.
 If I do double query, I mean, first search for one string, and then
 for another string inside this string, the query takes 20 seconds,
 which is too long.

 Any idea how to do full-text search for 2 or more search strings with
 AND as boolean operator?
 


--
Best regards,
Andrej
----------------
[email protected]
----------------

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** END OF ORIGINAL MESSAGE **
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