fulltext-index

Full Text Search always returns empty result set

由 心不动则不痛 提交于 2021-02-08 08:28:19
问题 I have a table named 'fact' with title column, that should be full text index. Firstly, I add a full text index: ALTER TABLE fact ADD FULLTEXT title_fts (title) So, I insert row: INSERT INTO fact (id, title) VALUES ('1', 'red blue yellow ok green grey ten first wise form'); And then I perform search: select * from fact f where contains (f.title, '"red" or "blue"') When I perform the following query, or any other query with 'contains' statement, I get emtpy result set: I have to use this

Full Text Search always returns empty result set

由 守給你的承諾、 提交于 2021-02-08 08:27:49
问题 I have a table named 'fact' with title column, that should be full text index. Firstly, I add a full text index: ALTER TABLE fact ADD FULLTEXT title_fts (title) So, I insert row: INSERT INTO fact (id, title) VALUES ('1', 'red blue yellow ok green grey ten first wise form'); And then I perform search: select * from fact f where contains (f.title, '"red" or "blue"') When I perform the following query, or any other query with 'contains' statement, I get emtpy result set: I have to use this

Search queries in neo4j: how to sort results in neo4j in START query with internal TFIDF / levenshtein or other algorithms?

由 北城余情 提交于 2019-12-30 05:32:05
问题 I am working on a model using wikipedia topics' names for my experiments in full-text index. I set up and index on 'topic' (legacy), and do a full text search for : 'united states' : start n=node:topic('name:(united states)') return n The first results are not relevant at all: 'List of United States National Historic Landmarks in United States commonwealths and territories, associated states, and foreign states' [...] and the actual 'united states' is buried deep down the list. As such, it

set new value for “ft_min_word_len ” FULLTEXT in mysql

由 余生颓废 提交于 2019-12-18 19:23:23
问题 I changed to "ft_min_word_len" = 4 by my-innodb-heavy-4G.ini located in my system path "C:\Program Files\MySQL\MySQL Server 5.1" , but when i run SHOW VARIABLES LIKE 'ft_min_word_len' I got still result value= 4 . I did not find this variable in my.ini file. So i have also create a my logic. I copied to ft_min_word_len variable and place in my.ini file and now my result show value=3 . But it is not working for three character search. I've restarted server. How can i achieve to be able to

How to find Full-text indexing on database in SQL Server 2008?

由 匆匆过客 提交于 2019-12-18 05:36:12
问题 Hi I am looking for a query that is able to find Full text indexing on all tables and columns within a database using SQL Server 2008. Any information or help that can be provided for this is welcomed 回答1: Here's how you get them SELECT t.name AS TableName, c.name AS FTCatalogName , i.name AS UniqueIdxName, cl.name AS ColumnName FROM sys.tables t INNER JOIN sys.fulltext_indexes fi ON t.[object_id] = fi.[object_id] INNER JOIN sys.fulltext_index_columns ic ON ic.[object_id] = t.[object_id]

SQL Server Full-Text Search against Document (multiple related tables and field)

由 微笑、不失礼 提交于 2019-12-12 02:46:10
问题 I have a document (in this case Invoice) structure which contains multiple tables: Invoice Header (No. (PK), Customer Name, Customer Address, ...) Invoice Lines (Invoice No. (PK), Line No. (PK), Description, Qty., ...) Invoice Header Comments (Invoice No. (PK), Comment No. (PK), Comment) When I run a search I would like to execute it against whole document (as one entity, not against separate fields (Customer Name + Customer Address + Description + Comment). Example: All documents which have

How to do multiple text search using “$text query and $or” in mongodb / mongoose?

由 给你一囗甜甜゛ 提交于 2019-12-08 12:22:55
问题 Here is the model 'Class' model for which I have created the "text" index for 'keywords','lifeArea',''type'. Structure of the model: { "_id" : ObjectId("558cf6e3387419850d892712"), "keywords" : "rama,seetha", "lifeArea" : [ "Emotional Wellness" ], "type" : "Pre Recorded Class", "description" : "ram description", "synopsis" : "ram syn", "name" : "ram demo", "__v" : 0 } db.Class.getIndexes() // displaying index { "v" : 1, "key" : { "_fts" : "text", "_ftsx" : 1 }, "name" : "classIndex", "ns" :

Show a tables FULLTEXT indexed columns

由 这一生的挚爱 提交于 2019-12-03 17:28:46
问题 I'm looking to run a query that will return a list of columns in a table that are FULLTEXT indexed. The table is in MyISAM format and i'll be using php to construct the query. Ideally i would run the query and it would return the information so i could construct a comma separated string of the columns. e.g. "first_name, last_name, email" Is this possible in MySQL? 回答1: You can get that information from the information_schema.STATISTICS table. I'll give you the query to get all columns in the

Full text search vs LIKE

由 只愿长相守 提交于 2019-12-03 08:32:16
问题 My question is about using fulltext.As I know like queries which begin with % never use index : SELECT * from customer where name like %username% If I use fulltext for this query can ı take better performance? Can SQL Server use fulltext index advantages for queries like %username%? 回答1: Short answer There is no efficient way to perform infix searches in SQL Server, neither using LIKE on an indexed column, or with a fulltext index. Long answer In the general case, there is no fulltext

Show a tables FULLTEXT indexed columns

由 南笙酒味 提交于 2019-12-03 06:13:49
I'm looking to run a query that will return a list of columns in a table that are FULLTEXT indexed. The table is in MyISAM format and i'll be using php to construct the query. Ideally i would run the query and it would return the information so i could construct a comma separated string of the columns. e.g. "first_name, last_name, email" Is this possible in MySQL? You can get that information from the information_schema.STATISTICS table. I'll give you the query to get all columns in the table that are in one or more FULLTEXT indexes, since I think that's what you are asking for. Bear in mind
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