SQL Server 2008 R2全文搜索可理解两个单词并具有更好的排名

Question

Hi I'm trying to understand Full-Text Search in MS Sql Server.

I got a simple search working

SELECT *
FROM Product
WHERE FREETEXT (*, 'stackoverflow' );

Even got some simple rank working.

SELECT
   *
FROM
    Product
    INNER JOIN FREETEXTTABLE ( Product , * , 'stackoverflow' ) ft ON ( Product.ProductNo = ft.[Key] )
ORDER BY
    ft.Rank DESC

My First Question is How do I control the rank more. Ex. I want the products , name column to give a higher rank, than the description column if the search word is found there. and is it possible to make it search for only part of a word. ex.

overflow -> return stackoverflow

stack -> return stackoverflow

My Second Question How do I make it possible to find the correct result when searching after stack overflow in two word. Since I'm going to have alot of products where some users are going to spell it in two words, when it is correctly spelled in one word. I got a dictonary installed for my Full Text Catalog, but it don't help with searchword in two words.

Product Table

• Id

• Name

• Description

Answer 1

For the first part of your question: You'll need to use 2 queries with a union, providing a 'weight' of your own, something like this...

select  [key], sum(rnk) as weightRank
from
    (
    select Rank * 2.0 as rnk, [key] from freetexttable(tableName,Title,'free text string')
    union all
    select Rank * 1.0 as rnk, [key] from freetexttable(tableName,Description,'free text string')
    ) as t
group by [key]

Second part of your question:

SELECT *
FROM Product
WHERE FREETEXT(*,'FORMSOF(INFLECTIONAL, "stack", "overflow")');