Full Text Search

--Create FTS
Use ClientDB
GO
EXEC sp_fulltext_database 'enable'
GO
CREATE FULLTEXT CATALOG [FTC_LO_TEXT] WITH ACCENT_SENSITIVITY = OFF
GO
CREATE FULLTEXT INDEX ON [dbo].[lo_text] KEY INDEX [PK_lo_text] ON ([FTC_LO_TEXT]) WITH CHANGE_TRACKING AUTO)
GO
ALTER FULLTEXT INDEX ON [dbo].[lo_text] ADD ([descr])
GO
ALTER FULLTEXT INDEX ON [dbo].[lo_text] ADD ([keywords])
GO
ALTER FULLTEXT INDEX ON [dbo].[lo_text] ADD ([title])
GO
ALTER FULLTEXT INDEX ON [dbo].[lo_text] ENABLE
GO

--Drop FTS
EXEC sp_fulltext_database 'disable'
GO
DROP FULLTEXT INDEX ON lo_text
GO
IF EXISTS (SELECT * FROM sysfulltextcatalogs ftc WHERE ftc.name = N'FTC_LO_TEXT')
DROP FULLTEXT CATALOG [FTC_LO_TEXT]''
GO

--Disable Stopwords and Stoplists on FTS
ALTER FULLTEXT INDEX ON lo_text
SET STOPLIST OFF;
GO

EXEC sp_fulltext_catalog 'FTC_LO_TEXT', 'rebuild'
GO

--Rebuild FTS Catalog
ALTER FULLTEXT CATALOG FTC_LO_TEXT REBUILD


--Sample of FTS search
declare @str_decr nvarchar(50), @str nvarchar(50) , @str1 nvarchar(50) , @str2 nvarchar(50)
set @str1 = 'New'
set @str2 = 'Document'
set @str_decr = '%'+@str1+'%'

select * From lo_text lt where lt.title LIKE @str_decr-- or lt.descr LIKE @str_decr

set @str = @str1 + ' OR ' +@str2
select * from lo_text WHERE CONTAINS(title, @str)

set @str = @str1 + ' AND ' +@str2
select * from lo_text WHERE CONTAINS(title, @str)

set @str = @str1 + ' ' +@str2
select * from lo_text WHERE FREETEXT(*, @str)

set @str = '"'+@str1 + ' ' +@str2+'*"'
select * from lo_text WHERE FREETEXT(descr, @str)


NOTES:
1)If you cannot start the fdhost, please check the permission of FDLauncher Service logon account. Do you specify a user account for FDLauncher service during setup? If you didn't specify user account for FDLauncher Service, by default, FDLauncher is configured using the Local Service account. This account is not added to the SQLServerFDHostUser$$MSSQLSERVER group. To work around the issue, you need to assign Local Service account (or logon account of FDLauncher Service) to SQLServerFDHostUser$$MSSQLSERVER group. Then restart fdhost using sp_fulltext_service 'restart_all_fdhosts' procedure.

EXEC sp_fulltext_service 'restart_all_fdhosts'