full-text-indexing

What are the best practices in using Lucene.Net? or where can I find a good lucene.net usage sample? Razzie If you're going to work with Lucene, I'd buy a good book that covers it from A to Z. Lucene has a very steep learning curve (in my opinion). It's not only knowing how to search your that's important - it's also about indexing it. Doing a basic search is easy, but creating an index that consists of millions of records of data and still being able to do a lightning fast search over it is possible but pretty hard. There's no tutorial that learns you that. I'd recommend Lucene in Action,

I have an extremely large table (4M+ rows) with disk space of more than 40Gb (14Gb data and 28Gb index). I needed fulltext search on multiple fields both combined and separated, meaning that I needed to make it possible to fulltext search on both single columns and multiple columns together, like below: for combined search SELECT `column_a`, `column_b` FROM `table_1` WHERE MATCH (`column_a`, `column_c`, `column_x`) AGAINST ('+$search_quesry*' IN BOOLEAN MODE); for separate search SELECT `column_a`, `column_b` FROM `table_1` WHERE MATCH (`column_a`) AGAINST ('+search_query*' IN BOOLEAN MODE);

I am writing a newsletter script and I need to implement searching in the addresses. I indexed the table with FULLTEXT but when I do a query such as: SELECT * FROM addresses WHERE MATCH(email) AGAINST("name@example.com" IN BOOLEAN MODE) I get strange results. It displays all emails on "example.com" and all emails with user "name". For example I get: john@example.com name@mail.net steven@example.com I rewrote the query to use LIKE "%name@example.com%" but for a big table it takes ridiculous amount of time to complete. Is there a solution for this? I want when searching to show only full

TLDR; How do you add a full text index using Entity framework 5 coded migrations I'm having issues adding a full text index to a database using Entity framework migrations. It needs to be there from the start so I'm attempting modifying the InitialCreate migration that was automatically generated to add it. As there isn't a way to do it via the DbMigrations API I've resorted to running inline sql at the end of the 'Up' code. Sql("create fulltext catalog AppNameCatalog;"); Sql("create fulltext index on Document (Data type column Extension) key index [PK_dbo.Document] on AppNameCatalog;"); When

For the past 4 days I have had massive problems with my nightly updates , except for 1 night were it all went fine in between these 4 days. During these updates i update a couple of fulltext indexes. I do it in this manner. Drop the fulltext index Update the fulltext table Add the fulltext index This has been working perfect for over 2 years . Usual update time was around 3-4 hours which was normal for the amount of data that is updated each night. But since Friday really the update times has been between 9-12 hours! Last night the server crashed intentionally by the engine, this was in the

I have a search table with, say, 4 columns of text data to search. I do something like this: SELECT * FROM dbo.SearchTable WHERE CONTAINS((co1, col2, col3, col4), 'term1 AND term2') It looks like Contains only returns true if term1 and term2 are in the same column. Is there any way to specify that all columns should be included with an AND? If not, my idea is to JSON all search columns and stick them into one. That way I can full text search them but still easily extract the individual columns in .NET. I'm presuming that the indexer won't have a problem with this and will dispense with the