full-text-search

问题 I'm trying to add a simple mysql full-text search to a small table <2000 entries. Please don't tell me to install solr, or any other search gems. I've tried to run them and it seems to be one issue after another. I'll get around to it one day, but that day is not today. I need to add an add_index migration, but when I run add_index :users, :name, :fulltext I get an error. - undefinded method 'key'. I can't seem to find any documentation anywhere which explains how to make a fulltext mysql

问题 I am trying to index documents to be searchable on their tag array. CREATE INDEX doc_search_idx ON documents USING gin( to_tsvector('english', array_to_string(tags, ' ')) || to_tsvector('english', coalesce(notes, ''))) ) Where tags is a (ci)text[] . However, PG will refuse to index array_to_string because it is not always immutable. PG::InvalidObjectDefinition: ERROR: functions in index expression must be marked IMMUTABLE I've tried creating a homebrew array_to_string immutable function, but

问题 I have a page with more than 200 links with this kind of formatting. <h1> <a href="somelink">Somelink</a> some text that explain the meaning of the link. </h1> Now, to make it bit easy to search through this link, i have put a search box. My requirement is to search through all this tag and find the links that are relevant to the search box and hiding rest of the link. How to do it in javascript ? ( i know basic javascript/jquery stuff but How to do full text search ? ) I do not required

问题 Novice on Lucene here. I'm using it with Hibernate in a java client, and have been getting this error on a particular query: HSEARCH000146: The query string 'a' applied on field 'name' has no meaningfull tokens to be matched. Validate the query input against the Analyzer applied on this field. Search works fine for all other queries, even with empty resultset. My testing DB does have this record with 'a'. What could be wrong here? 回答1: 'a' is a stopword, and will be filtered out of your query

问题 I'm running two queries on a table. SELECT MSDS FROM dbo.MSDSSearch3 WHERE CONTAINS(MSDS, 'STYCAST') And SELECT MSDS FROM dbo.MSDSSearch3 WHERE MSDS like '%STYCAST%' The first query will return 'STYCAST 50300 LV' And the second will return 'STYCAST 50300 LV' 'STYCAST 2851 BLACK' Does anyone know why the like would return more values than the contains? Is there a problem with how I'm running contains? Thanks in advance. 回答1: Here's a similar post, where rebuilding the fulltext catalog seemed

问题 I am working with MySQL full text search but find it lacking in situations where your string is part of a word within a field. If my field is "New York Times" and I search for "Time" I get no results. The hackish way to solve this is to set up two queries, one that does a full text search and the other that does: SELECT * FROM ___ WHERE 'string' LIKE %searchterm% Is there any way that I can set up my full text search to solve this issue so I don't have to run the extra query? 回答1: I've

问题 Code: string spName = "usp_Test_Procedure.sql"; var tfsPp = new TeamProjectPicker(TeamProjectPickerMode.SingleProject, false); tfsPp.ShowDialog(); _tfs = tfsPp.SelectedTeamProjectCollection; if (tfsPp.SelectedProjects.Any()) { _selectedTeamProject = tfsPp.SelectedProjects[0]; } string selectedProjectName = _selectedTeamProject.Name; var tfs = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(_tfs.Uri); var vsStore = tfs.GetService<VersionControlServer>(); var project = "project"; var

问题 I've been a MYSQL user,never tried Postgres . But MYSQL has bottle neck on fulltext search when the data set is huge. 回答1: I ran benchmarks a few years ago on large datasets and found that : MySQL FULLTEXT Is pretty slow. Another drawback is that it forces MyISAM on you which brings a lot of problems. Also index updates are quite slow once the index reaches a certain size : when you insert a new row, a substantial part of the index is re-generated, sometimes a few hundred megabytes of index

问题 We have a simple search on our site that uses MySQL fulltext search and for some reason it doesn't seem to be returning the correct results. I don't know if it's some kind of issue with Amazon RDS (where our database server resides) or with the query we are requesting. Here is the structure of the database table: CREATE TABLE `items` ( `object_id` int(9) unsigned NOT NULL DEFAULT '0', `slug` varchar(100) DEFAULT NULL, `name` varchar(100) DEFAULT NULL, PRIMARY KEY (`object_id`), FULLTEXT KEY

问题 Let's say I have a column family named Questions like below: Questions = { Who are you: { username: "user1" }, What is the answer: { username: "user1" }... } How do I search for all the questions that contain certain words? Get all questions that contain 'what' word. How do I do it using python or at least Java? 回答1: Solandra (https://github.com/tjake/Solandra) is the new name for Lucandra. Solandra is a combination of Cassandra and Solr (which is based on the Lucene full-text search engine).