fulltext-index

what exactly is the difference (and advantages/disadvantages) between a fulltext index and a regular index on a varchar column? When would I use which index? I have a multitude of varchar columns (addresses - city name, street name etc.) which I need to be searchable in the most performant way and I'm trying to figure out which index type to use and why. Thank you! It depends on the kind of search you want to do. For example, you can't use a normal index with this query: SELECT * FROM [MyTable] WHERE [MyColumn] LIKE '%' + @SearchText + '%' It's not sargable . This is sargable, but the

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 search three character value also. You should change this system parameter, restart server and then rebuild

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 raises the problem that, in order to find the best match (e.g. levershtein, bi-gram, and so on algorithms

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 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] INNER JOIN sys.columns cl ON ic.column_id = cl.column_id AND ic.[object_id] = cl.[object_id] INNER JOIN sys

We are writing unit tests for our ASP.NET application that run against a test SQL Server database. That is, the ClassInitialize method creates a new database with test data, and the ClassCleanup deletes the database. We do this by running .bat scripts from code. The classes under test are given a connection string that connects to the unit test database rather than a production database. Our problem is, that the database contains a full text index, which needs to be fully populated with the test data in order for our tests to run as expected. As far as I can tell, the fulltext index is always