Catalog Text For Free

Create FULLTEXT index using ALTER TABLE statementFirst, specify the name of the table that you want to create the index after the ALTER TABLE keywords.Second, use the ADD FULLTEXT clause to define the FULLTEXT index for one or more columns of the table.

To get to this screen, go to the database and then go to Storage > Full Text Catalogs, find the full text catalog you want to work with and right click on it and select Properties.

When FREETEXT is used, the full-text query engine internally performs the following actions on the freetext_string, assigns each term a weight, and then finds the matches: Separates the string into individual words based on word boundaries (word-breaking). Generates inflectional forms of the words (stemming).

The short answer: Freetext ranking is based on the OKAPI BM25 ranking formula. Each term in the query is ranked, and the values are summed.

Full-text catalog and index data is stored in files created in a full-text catalog directory. The full-text catalog directory is created as a sub-directory of the directory specified in @path or in the server default full-text catalog directory if @path is not specified.

FREETEXTTABLE uses the same search conditions as the FREETEXT predicate. Like CONTAINSTABLE, the table returned has columns named KEY and RANK, which are referenced within the query to obtain the appropriate rows and use the row ranking values.

Full-text queries perform linguistic searches against text data in full-text indexes by operating on words and phrases based on the rules of a particular language such as English or Japanese. Full-text queries can include simple words and phrases or multiple forms of a word or phrase.