full-text-search

问题 I am using Full Text Search with mysql on 3 columns. Assume data like: Row1 contain two columns with 'Greater Noida Expressway' and 'Sector 91'. Row2 contain two columns with 'Ho Chi Minh Marg' and 'Greater Kailash 2'. Row3 contain two columns with 'Rohini' and 'Sector 91' Now, if I query with SELECT * FROM trafficker.traffics WHERE MATCH (column1, column2) AGAINST ('Greater Noida'); Above query will result me first two rows as matching will be done on 'Greater' and 'Noida'. And 'Greater'

问题 I'm currently trying to create FULLTEXT indexes into my database (Microsoft SQL Server 2005). First I want to create the catalog: USE [AspDotNetStorefront] GO EXEC sp_fulltext_database 'enable' GO CREATE FULLTEXT CATALOG searchcatalog GO But that doesn't work, the result is this: Msg 7609, Level 17, State 100, Line 1 Full-Text Search is not installed, or a full-text component cannot be loaded. I'm running on Windows XP, SQL Server Express 9.0.4053 and I have SQL Server Management Studio

问题 I am using the below code for example: SELECT *, (MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker')) AS score FROM `example_table` WHERE MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker')) order by score DESC; However even though EXACT matches exist in the wm column, the EXACT match doesn't appear untiil the 8th result. The ones ahead of it all have the phrase too, but also some following text. I checked the locn , gns fields to see how they compared and nothing really stands out that should

问题 I have text field. And for given query I want to find all documents that contains indexed field values. query.contains(document.field_name) Examples: 1. field_name:"a b" 2. field_name:"a b c" For query "a b d" I want to find only first item. Not efficient way to do this is basically generate all substrings of query and index field as a string. Is it possible to implements such requirements in Solr using existen functionality? If not what is the most efficient algorithm/way to do this? PS.

问题 I have text field. And for given query I want to find all documents that contains indexed field values. query.contains(document.field_name) Examples: 1. field_name:"a b" 2. field_name:"a b c" For query "a b d" I want to find only first item. Not efficient way to do this is basically generate all substrings of query and index field as a string. Is it possible to implements such requirements in Solr using existen functionality? If not what is the most efficient algorithm/way to do this? PS.

问题 I'm trying to speed up a query for the below: My table has around 4 million records. EXPLAIN SELECT * FROM chrecords WHERE company_number = 'test' OR MATCH (company_name,registered_office_address_address_line_1,registered_office_address_address_line_2) AGAINST('test') LIMIT 0, 10; +------+-------------+-----------+------+------------------+------+---------+------+---------+-------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +------+---------

问题 Take this query: SELECT * FROM Books WHERE CONTAINS(([Description], ReverseDescription), '"øgle"') And these two text for the columns being search: http://textuploader.com/5bg5r http://textuploader.com/5bg59 Why does that one match? I cannot for find an exact match in either of those texts. And as far as I know only the partial match should show up if I use the following query: SELECT * FROM Books WHERE CONTAINS(([Description], ReverseDescription), '"øgle*"') Anyone know what's going on? 回答1:

问题 I would like to write an application, in java, that allows me to open a file (txt) and using the users input, search for all instances of a particular word or string. As there are probably more experienced programmers here, i would like some advice about how to go about creating such a tool. How would you go about creating a basic text search tool? I have been playing around with some java classes such as File, FileOutputStream, FileInputStream, InputStreamReader, OutputStreamReader,

问题 I would like to write an application, in java, that allows me to open a file (txt) and using the users input, search for all instances of a particular word or string. As there are probably more experienced programmers here, i would like some advice about how to go about creating such a tool. How would you go about creating a basic text search tool? I have been playing around with some java classes such as File, FileOutputStream, FileInputStream, InputStreamReader, OutputStreamReader,

问题 In Mysql (Innodb) I have created a FULL-TEXT index. Is there a query I can use to retrieve a list of all words contained in the full-text index? My idea is to use a text field that hold a json dump of a list of TAGS. Than I can use full-text query to retrieve rows matching tags (it works). The problem left is to retrieve a list of indexed tags to implement a suggestion and auto completion tag input field. 回答1: Set innodb_ft_aux_table mysql server variable at runtime to your innodb table