Question

我是一个SQL新手，如果这是一件简单的话，那就很抱歉

我在sql中的数据是这样的

我的数据：

Content    sl.no
KTUU Alaskas News Source Alaskas Top News Storm Watch Weather Politics Sports Health Business Headlines 16419
Lawn Care Business Service Providers Lawn Care Business Information Lawn Mowing Companies Lawn Care Directory   17113
Hydrophilic polyurethane foams medical consumer personal care cosmetics agricultural products Rynel     17183
Care Patient Care Product Manufacturer  17752
Bartlett Tree Experts Leader Residential Commercial Tree Care Services  17890
Safe Earth Lawn & Garden Care   17920
Carolina Outdoor Care Inc   17972
Glenwood Autism Behavioral Health us difference 17997
Mental Health North Central Alabama 18092
East Alabama Mental Health  18093
Jacksonville Mental Health  18094
Mental Health Assn-Madison Cty  18095
Baptist Health Ctr  18136
Mental Health Wellness Information Community Counseling Services    18150
Dayspring Behavioral Health 18162
Daysprings Behavioral Health    18164
Families Outpatient Mental Health Counseling Services   18167
Families Outpatient Mental Health Counseling Services   18168
Health Resources Of Arkansas    18170
Mental Health Council Of Ar 18172

如果我运行以下查询

SELECT TOP 3 * FROM TABLE_NAME where FREETEXT(content,'health care')

我得到前三行而不是前三行更接近答案

如何获得前三个最相关的查询。

并且查询可以像前一个一样快速

Answer 1

使用FREETEXTTABLE代替FREETEXT。这将为您提供一系列匹配结果，包括Rank，您可以通过this了解更多信息

SELECT TOP 3 RANK, [KEY]
FROM FREETEXTTABLE(TABLE_NAME,content,'health care') 
ORDER BY RANK DESC

通过KEY加入以获取原始表格中的列。

SELECT TOP 3 TABLE_NAME.*
FROM FREETEXTTABLE(TABLE_NAME,content,'health care') as fullTextResults
join TABLE_NAME on fullTextResults.[KEY] = TABLE_NAME.Id
ORDER BY fullTextResults.RANK DESC

限制SQLServer全文搜索到前3个相关答案

1 个答案: