SQL Server，我的自由文本搜索示例有什么问题？

Question

我正在尝试在SQL Server 2008上进行自由文本搜索。但是我有问题让它工作。任何人都可以发现我的脚本中有什么问题：

• 它设置不正确吗？
• 我的查询无效吗？
• 还有其他线索吗？

为什么最后的查询没有结果？

---------------------------------------------------------------------------- 
-- Set up fulltext search 
---------------------------------------------------------------------------- 
IF FullTextServiceProperty('IsFullTextInstalled') <> 1 
BEGIN 
    PRINT 'Full Text Service is not installed, script is aborted.' 
    RETURN 
END 

IF DatabaseProperty(DB_NAME(), 'IsFulltextEnabled') <> 1 
    EXEC sp_fulltext_database 'enable' 

IF NOT EXISTS 
(
    SELECT 1 
    FROM sys.fulltext_catalogs (NOLOCK) 
    WHERE name = 'searchcatalog_test' 
) 
BEGIN 
    CREATE FULLTEXT CATALOG searchcatalog_test 
    WITH ACCENT_SENSITIVITY = OFF 
END 


---------------------------------------------------------------------------- 
-- Set up table 
---------------------------------------------------------------------------- 
IF OBJECT_ID('freetext_test', 'U') IS NOT NULL 
BEGIN 
    EXEC SP_FULLTEXT_TABLE 'freetext_test', 'DROP' 
    DROP TABLE freetext_test 
END 

CREATE TABLE dbo.freetext_test 
(
    freetext_id INT IDENTITY 
, freetext_data NVARCHAR(MAX) 
    CONSTRAINT pk_freetext_test PRIMARY KEY (freetext_id) 
) 

CREATE FULLTEXT INDEX ON freetext_test 
(
    freetext_data LANGUAGE 0 -- 0 = Neutral 
) 
KEY INDEX pk_freetext_test ON searchcatalog_test 
WITH CHANGE_TRACKING AUTO 

INSERT INTO freetext_test(freetext_data) 
     SELECT N'Some text to test free text searching' 
UNION SELECT N'Another text to test with' 
UNION SELECT N'Another test string' 
UNION SELECT N'Today is a sunny day' 
UNION SELECT N'I wonder if anyone at StackOverflow can help me?' 


---------------------------------------------------------------------------- 
-- Test section 
----------------------------------------------------------------------------  
SELECT * FROM freetext_test 

SELECT * FROM freetext_test WHERE FREETEXT (freetext_data, N'test') 
SELECT * FROM freetext_test WHERE FREETEXT (freetext_data, N'string') 
SELECT * FROM freetext_test WHERE FREETEXT (freetext_data, N'sunny') 
SELECT * FROM freetext_test WHERE FREETEXT (freetext_data, N'StackOverflow') 

SELECT * FROM freetext_test WHERE CONTAINS (freetext_data, N'text OR test') 
SELECT * FROM freetext_test WHERE CONTAINS (freetext_data, N'string OR another') 
SELECT * FROM freetext_test WHERE CONTAINS (freetext_data, N'today AND sunny') 
SELECT * FROM freetext_test WHERE CONTAINS (freetext_data, N'anyone AND StackOverflow') 

Answer 1

你的脚本就像一个魅力。

难道你是在执行SELECT时太快，索引引擎无法生成目录？