Searching the text of a collection of documents or free text fields in a database to find those containing a word or combination of words.

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1answer
2k views

MySQL Fulltext match with forward slashes

I'm trying to run a fulltext match against a product database, where the product names have forward slashes in them. These are staple sizes, so it's quite important that they get matched. However, ...
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1answer
3k views

postgres GROUP BY and ORDER BY problem

I have two tables like this: CREATE TABLE cmap5 ( name VARCHAR(2000), lexemes TSQUERY ); and CREATE TABLE IF NOT EXISTS synonyms_all_gin_tsvcolumn ( cid int NOT NULL ...
2
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1answer
145 views

Are there differences in performance of getting data between FullText Search and indexed columns

In SQL Server 2008 R2 I have a query which looks like create stored procedure give_me_art @filter varchar(15),@skl_id int begin select id,naziv,sifra,isnull(lager.kolicina,0) as lager from art ...
0
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1answer
311 views

Why number of matches in fulltext search get less when we put less strings?

SELECT * FROM tableauxiliary WHERE MATCH (FullTextSearch) AGAINST ('resta*' IN NATURAL LANGUAGE MODE) show 5 results SELECT * FROM tableauxiliary WHERE MATCH (FullTextSearch) AGAINST ('restaurant*' ...
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1answer
2k views

Why does MATCH() give Score 0, if there are less rows in the database?

I followed this example from the Mysql Documentation: CREATE TABLE articles ( id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY, title VARCHAR(200), body TEXT, FULLTEXT ...
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5answers
5k views

SQL Server 2008 Full Text Index Never Seems to Complete

Our website has a SQL Server 2008 R2 Express Edition database with full-text indexing for our website search. Each time a new record is added or updated in one of the indexed tables, the indexing ...
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0answers
56 views

Fulltext indexes and issuers with server startup

I have a windows server for host about 4500 data bases for same application. And this application have 34 fulltext catalogs on it, and the CHANGE_TRACKING for this fulltext index are AUTO. And the ...
4
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1answer
3k views

Using Solr/Lucene for searching non-text tables?

I am creating a web application to retrieve subsets of one large (4m rows) table. The 4m rows only change once a year. The table has 200+ columns of types boolean and numeric. It has no text columns. ...
5
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2answers
277 views

Recommended structure? %70 write %30 read. 10M row. 200 query/sec. Select, update, insert, search

Followings are what I need to do on my project: 1- If a search term is new and unique, then add the search term 2- Show lastest searched 1000 search terms (I don't need to store dates of all search ...
5
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2answers
8k views

How to search for a specific column name in all the tables in MySQL Workbench?

In MySQL Workbench, is it possible to search for a specific column name in all the tables? (Writing the string to look for in the field at the top right does nothing). Thank you.
2
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0answers
45 views

improving this goal query

Goal joining the two tables: tbl_quickSearchParam (fulltext search results) against tbl_product ( active products : prod_status = 1, group by prod_image_name) create table tbl_product ( ...
1
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1answer
4k views

Find fulltext indexes in SQL Server 2008

How do I find a list of tables that have a FULLTEXT INDEX applied to them on a given database? For example, you can enable and disable a FULLTEXT INDEX like this: ALTER FULLTEXT INDEX ON ...
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1answer
577 views

which database engine is best for full text search on a 10M rows table?

I'm creating a search engine and needs to search keywords in a text field (about 300 words in each text field, unstructured). I'm thinking about noSQL\MySQL+Sphinx, the performance impact here is ...
1
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1answer
231 views

Parse hyphenated word to unsigned integer

When tested to_tsvector on 'someword-123' with english full text config, I got the following result: SELECT to_tsvector('someword-123'); to_tsvector tsvector -------------------- "'-123':2 ...
3
votes
1answer
289 views

Can underscore be forced as a word splitter without a full-text parser plugin?

Is there any way in MySQL to force underscore to become a word splitter character (like space or dash) without having to use a fulltext parser plugin? If not, does such a plugin already exist or do I ...
9
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2answers
562 views

SQL Server Filetable document properties

I'm using SQL Server 2012's Filetable to store documents and search them with Semantic Search. I was wondering if there is a way to list all the document properties (meta data). There is a way to ...
1
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1answer
2k views

SQL Server Full-Text Indexer with stoplists/stopwords

As I'm working on a graduate project (Textmining with SQL Server 2012 Semantic Search) I run into a situation where I need to post a question on this website, hoping someone can help me. This ...
2
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2answers
100 views

Looking for a database that supports fulltext but does not lock table on insert or update

I have a program that needs to insert and update a table very frequently (200+ insert or update queries per minute), and this table should also support fulltext search. I am currently using MySQL ...
3
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0answers
179 views

SQL Server fulltext_semantic_languages

When trying to install a semantic search example, I'm running into a problem. There are some steps in the example to check if the 'new' Semantic Search and Full Text Search are installed. ...
0
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1answer
59 views

Searching through lots of applications

Google search has instant search feature. While you are typing, it finds the pages. Apple.com search box. StackExchange ask question part finds similar questions while you are typing question title. ...
1
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1answer
4k views

Full-text search in SQL Server on multiple tables fails

tl;dr version: A full-text search using FREETEXTABLE that worked fine on one column in one table produces 100% false postitives and 100% false negatives when the same steps are followed but the ...
0
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1answer
325 views

How to avoid certain characters in MySQL full text search?

I have a column named parcel_number of varchar type. It contains values like ab-cd-ef and uvwxyz. A search for abcdef or uv-wx-yz does not return those records. How should I write the query to meet ...
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2answers
1k views

Slow mysql fulltext query

I have a little problem with the performance of a mysql-query which uses a fulltext index. The following query SELECT Mention.id FROM mentions AS Mention WHERE (MATCH (`Mention`.`title_text`, ...
2
votes
1answer
145 views

MySQL full text search result problem

I have this query that does not return any results: SELECT MATCH (e.firstname, e.lastname, e.tc_identity) AGAINST ('Baha') AS Score , e.* FROM employees AS e WHERE MATCH (e.firstname, ...
0
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1answer
173 views

SQL Server 2008 Full-Text Search installation

I have full version of SQL Server 2008 R2 on my machine. Only problem is when my computer was created (by the IT Tech's at my work) they did not add the Full-Text Search feature to the installation. I ...
6
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1answer
13k views

Why is LIKE more than 4x faster than MATCH…AGAINST on a FULLTEXT index in MySQL?

I'm not getting this. I've got a table with these indexes PRIMARY post_id INDEX topic_id FULLTEXT post_text Table has (only) 346 000 rows. I am trying to perform 2 queries. SELECT ...
2
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1answer
589 views

SQL Server 2005: Full-text search on a multi-lingual table

I have an articles table as follows. +-----------+--------------+---------+ | uid | int | PRIMARY | | articleId | int | UNIQUE | | lang | varchar(2) | UNIQUE | | ...
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1answer
58 views

SQL Server 2005: Full-text search catalog design

I'm new to full-text searches, and am curious about how to properly design the full-text catalogs. I have an "articles" table. I would like to do full-text search on both the "title" and the "body" ...
2
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1answer
67 views

Full Text search returns duplicate keys

I have a search like the example below. The problem is that the result returns a key muliple times if the term "beach" is in myTextColumn multiple times, for example "I went to the beach because the ...
4
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4answers
6k views

Property PopulationStatus is not available for FullTextCatalog… How to fix?

I've created a new catalog (case insensitive, make default catalog), when I try to right click > properties to add tables I get this error: Property PopulationStatus is not available for ...
6
votes
1answer
1k views

Can I have an InnoDB master and MyISAM slaves with Full-Text for searching?

I'd like to use InnoDB on the master, for its transactional ability, but MyISAM on the slaves for the full-text search ability. Is this possible?
3
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2answers
805 views

SQL Server 2005: Full-text search space requirements

Is there a way to calculate the physical drive space required for a full-text search catalog? Space is cheap, but I'd like to know what I'm getting into. I'm looking at a table of about 200 articles ...
2
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1answer
1k views

SQL Server 2005: Full-text search, order by matches

Is it possible to do a full-text search in SQL Server 2005, ordering on the number of matches? For example, let's say I have the following products for sale. Tennis Racquets Tennis Balls Footballs ...
0
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1answer
205 views

Simple Search on 13 Terabyte Oracle Database to return relevant rows (.net app? Java?)

I am sure there are some easy ways to do this... I have a simple flat Oracle table which is 13 terabytes or so in size due to a large number of rows accumulating over the years. I need to do a search ...
2
votes
1answer
125 views

why/how does the number of matched columns influences the way of excecuting a query

Imagine the following situation: Table A uses MyISAM and contains 4 fields (text) with a combined FULLTEXT-index. FULLTEXT fulltext1 | fulltext2 | fulltext3 | fulltext4 Table B uses InnoDB and ...
1
vote
1answer
420 views

How to match on a longer word using MySQL Full Text Search?

I have 2 tables : Company and category (category table has tags field, I wrote keywords for each category, I used comma(,) as delimiter) When I search something, it will first search in the company ...
5
votes
1answer
5k views

Why full-text-search returns less rows than LIKE

I don't get full-text-search working as I want it to, and I don't understand the differences in the resultlists. Example statements: SELECT `meldungstext` FROM `artikel` WHERE `meldungstext` LIKE ...
6
votes
2answers
2k views

Slow ORDER BY with LIMIT

I have this query: SELECT * FROM location WHERE to_tsvector('simple',unaccent2("city")) @@ to_tsquery('simple',unaccent2('wroclaw')) order by displaycount I'm happy with it: "Sort ...
0
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1answer
57 views

2 Very similar queries return different number of result (one is null)

I want to find businesses near a point that contain a word that start with sea lat=-6.185068&long=106.773121&keyword=sea&distance=5000&startfrom=0&howmany=20&prominent=5 ...
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1answer
4k views

Why does MATCH (FullTextSearch) AGAINST ('*' IN BOOLEAN MODE) return nothing?

MATCH (FullTextSearch) AGAINST ('k*' IN BOOLEAN MODE) return something Namely anything with a word that start with k MATCH (FullTextSearch) AGAINST ('ku*' IN BOOLEAN MODE) return less MATCH ...
1
vote
1answer
1k views

Full Text Search not searching special character

I am working on SQL Server 2008. I have created full text index on a Table(Column) and I am trying to find. SELECT * FROM TblName WHERE CONTAINS(ColName,'@#'); This is giving no results. But I ...
0
votes
1answer
102 views

Is there a way to display current noise words in SQL 2000 Full Text Indexing?

I know this is ancient technology, but sometimes upgrading is not always an option. Does anyone now how to list the actual noise words that are currently in use on a SQL 2000 Full Text Index? We ...
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2answers
2k views

SQL Server Fulltext search against big amount of search terms over some period of time

I've got a task where I must do a fulltext search in SQL Server 2008 against big amount of search terms (30-60 search terms) combined with OR. Some search terms may have partial match (asterisks at ...
4
votes
1answer
395 views

Sql Server Full Text Search one table for text values in another table

Is it possible to run a full text search on an FTS-indexed column for all values in another table? Conceptually it'd look like select d.* from Docs d, Tags t where CONTAINS(d.fulltext, t.tagvalue) ...
3
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3answers
3k views

slow query with fulltext and left join

I have 3 tables about 250,000 records. table1 is MyISAM, add fullindex with title and content, add index with pid. table2 and table3 are InnoDB, add index with pid. Only query table3, just cost ...
3
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1answer
5k views

Mysql fulltext search my.cnf optimization

I have open a question on http://serverfault.com/questions/353888/mysql-full-text-search-cause-high-usage-cpu Some user recommended asking here. We built a news site. Every day we will input tens of ...
5
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1answer
990 views

MySQL EXPLAIN doesn't show 'use index' for FULLTEXT

I have a basic table : create table fullTextTest ( id INT(11) NOT NULL, superText CHAR(255) NOT NULL, superLongText TEXT NOT NULL, primary key (`id`), FULLTEXT KEY `superText` ...
2
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1answer
2k views

Best way to compare strings using pre-built ngrams?

I'm struggling with an n-gram problem and have been hunting the Web for examples to help me out and have noticed n-grams being discussed on this forum. I'm working on a system where we've got scraped ...
1
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1answer
159 views

What is the use of creating full text catalog in full text indexing

Just want to know about the processes happening in full text indexing. I know by defining the full text indexing for a table, it will index all the words saved in that table. But i didn't get the use ...
1
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1answer
1k views

At which frequency run CTXSYS.CTX_DDL.OPTIMIZE_INDEX(…) on a fulltext index?

I've been told to run periodically CTXSYS.CTX_DDL.OPTIMIZE_INDEX(...) on some fulltext indexes, with no more information, in particular at which frequency this task should be run. I guess that it ...