Question

我有以下要求：

SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId
FROM V_ProductForSearch 
WHERE CONTAINS ((SearchKeyWords, PTitle, PDescription, Presentation), @KeyWords)

是否可以在找到术语的列的功能中归因于不同的权重。例如，在这种情况下，两个第一列的权重为0.8，最后一列的权重为0.5。

我知道当我们有几个搜索的术语时可以分配一个权重，但是对于列可以做同样的事情吗？

Answer 1

微软并没有采用一种方法来实现这一目标，你只能权衡关键词，因为它已经得到了重视。 http://msdn.microsoft.com/en-us/library/ms187787.aspx（阅读G段）

我尝试过另一种方法，我希望可以使用它。

我正在做的是权衡SearchKeyWords = 5，PTitle = 4，PDescription = 3，Presentation = 2.这些值正在总结和排序

SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId, SUM(srank) ranked 
FROM (
SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId, 5 srank
FROM V_ProductForSearch  
WHERE CONTAINS ((SearchKeyWords), @KeyWords) 
UNION ALL
SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId, 4 srank
FROM V_ProductForSearch  
WHERE CONTAINS ((PTitle), @KeyWords) 
UNION ALL
SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId , 3 srank
FROM V_ProductForSearch  
WHERE CONTAINS ((PDescription), @KeyWords) 
UNION ALL
SELECT Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId, 2 srank 
FROM V_ProductForSearch  
WHERE CONTAINS ((Presentation), @KeyWords) ) a
GROUP BY Id,SearchKeyWords, PTitle, PDescription, Presentation, Category, ManufacturerId
ORDER BY SUM(srank)

TSql包含称重列

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