The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 11: FileTableListing 11-29 shows how to create a full-text catalog in the database and a full-text indexon the name and file_stream columns of the Documents FileTable.-- Create a full-text catalogCREATE FULLTEXT CATALOG NorthPole_Catalog AS DEFAULT-- Create a full-text index on the FileTableCREATE FULLTEXT INDEX ON Documents(name LANGUAGE 1033,file_stream TYPE COLUMN file_type LANGUAGE 1033)KEY INDEX PK__Document__5A5B77D57DF9CB0AON NorthPole_CatalogListing 11-29: Create a full-text catalog and full-text index.Now we can query the full-text catalog for a list of files that contain the text test in thefile_stream field (Listing 11-30). The FREETEXT() function is used to specify whichcolumn we are querying and the value we are looking for.SELECT file_stream.GetFileNamespacePath(1)FROM dbo.DocumentsWHERE FREETEXT(file_stream, 'test')Listing 11-30: Query a full-text catalog.Just like with any full-text index, each indexed column has a specific language codeassociated with it (the sys.fulltext_languages catalog view returns a list ofsupported languages and their code). If your system has documents stored in differentlanguages and you want those to be indexed correctly, you will need to create a separateFileTable for each language.A more detailed discussion of full-text search, including the predicates that can be usedand tips on maintaining the index and configuring IFilters for different file types isbeyond the scope of this book.431