full-text-search

问题 I have got hold of a sql server 2008 developer edition and this is my data: if exists (select * from dbo.sysobjects where id = object_id(N'test') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table test create table test ( Id INT IDENTITY NOT NULL primary key, data NVARCHAR(255) not null ) insert into test (data) values ('Hello world'); insert into test (data) values ('Hello j-world'); I would like to find all rows which contain j-world whilst avoiding LIKE for efficiency reasons. If I try

问题 My goal is to use the MSSQL Fulltext Function with HQL. For what case I wrote a specific SQLFunction mapping the my "fulltext" function to the contains function. However, the problem is that in HQL (it seems) I have to explicity use a return type, which the MSSQL Contains functions does not use or accepts. This is how it works in MSSQL: select distinct id from content c where CONTAINS(c.content, 'p') This is my idea of using it in HQL: select id from Content c where fulltext(c.content, 'p')

问题 I am working on a django application with sqlite3 database, that has a fixed database content. By fixed I mean the content of the db won't change over time. The model is something like this: class QScript(models.Model): ch_no = models.IntegerField() v_no = models.IntegerField() v = models.TextField() There are around 6500 records in the table. Given a text that may have some words missing, or some words misspelled, I need to determine its ch_no and v_no . For example, if there is a v field in

问题 I'm having a problem when I try to do a full text search in boolean mode using a string with a single quote and an asterisk wildcard, i.e. "levi's*": it seems to search also for all words beginning with "s", like "spears", when, as far as I know, the quote should be considered part of the word while two single quotes ('') would be a word separator... but maybe I'm wrong. Please, look at the example here: http://www.sqlfiddle.com/#!2/3dd3e/2/0 - the second row should't be there how can I do

问题 I am pretty sure there should be a way to search for hashtags using Full-Text index in MyISAM table. Default setup would do the following: textfield hashtag #hashtag #two #hashtag #hashtag SELECT * FROM table WHERE MATCH(textfield) AGAINST ('#hashtag') > | hashtag | > | #hashtag | > | #two #hashtag #hashtag | While it should return only 2nd and 3rd rows instead. It looks like hashtag is treated as a word delimiter, so it is "removed" before the search begins. What should I do to enable

问题 After taking a look at this SO question and doing my own research, it appears that you cannot have a leading wildcard while using full text search. So in the most simple example, if I have a Table with 1 column like below: TABLE1 coin coinage undercoin select COLUMN1 from TABLE1 where COLUMN1 LIKE '%coin%' Would get me the results I want. How can I get the exact same results with FULL TEXT SEARCH enabled on the column? The following two queries return the exact same data, which is not exactly

问题 (MongoDB Full Text Search) Hello, I have put some fields in index and this is how I could search for a search_keyword . BasicDBObject search = new BasicDBObject("$search", "search_keyword"); BasicDBObject textSearch = new BasicDBObject("$text", search); DBCursor cursor = users.find(textSearch); I don't want search_keyword to be searched in all the fields specified in the index. *Is there any method to specify search_keyword to be searched in specific fields from the index??* If so, please

问题 I would like to create text index on mongo collection. I write db.test1.ensureIndex({'text':'text'}) and then i saw in mongod process Sun Jan 5 10:08:47.289 [conn1] build index library.test1 { _fts: "text", _ftsx: 1 } Sun Jan 5 10:09:00.220 [conn1] Index: (1/3) External Sort Progress: 200/980 20% Sun Jan 5 10:09:13.603 [conn1] Index: (1/3) External Sort Progress: 400/980 40% Sun Jan 5 10:09:26.745 [conn1] Index: (1/3) External Sort Progress: 600/980 61% Sun Jan 5 10:09:37.809 [conn1] Index:

问题 I have keywords like "some-or-other" where the hyphens matter in the search through my mysql database. I'm currently using the fulltext function. Is there a way to escape the hyphen character? I know that one option is to comment out #define HYPHEN_IS_DELIM in the myisam/ftdefs.h file, but unfortunately my host does not allow this. Is there another option out there? Edit 3-8-11 Here's the code I have right now: $search_input = $_GET['search_input']; $keyword_safe = mysql_real_escape_string(

问题 I want to use MySQL's full text search features using JPA, without having to use a native query. I am using EclipseLink, which has a function to support native SQL commands: FUNC. However, the help examples only show this being use with simple MySQL functions. My best effort attempt to get it to work with MATCH & AGAINST is as follows: @PersistenceContext(name="test") EntityManager em; Query query = em.createQuery("SELECT person FROM People person WHERE FUNC('MATCH', person.name) FUNC(