奇数全文搜索结果

Question

您好我有2个以下2个查询：

SELECT FT_TBL.JobId, FT_TBL.Title, FT_TBL.[Description], 
     FT_TBL.Location, KEY_TBL.RANK FROM Jobs AS FT_TBL 
INNER JOIN FREETEXTTABLE (Jobs, (Title, [Description], Location), 
    'asp.net software')
    AS KEY_TBL on FT_TBL.JobId = KEY_TBL.[KEY]
WHERE CONTAINS (Location, '"luton*"')
order by KEY_TBL.RANK desc;

和

SELECT FT_TBL.JobId, FT_TBL.Title, FT_TBL.[Description], 
    FT_TBL.Location, KEY_TBL.RANK FROM Jobs AS FT_TBL 
INNER JOIN FREETEXTTABLE (Jobs, (Title, [Description], Location), 
    'asp.net software', 100)
    AS KEY_TBL on FT_TBL.JobId = KEY_TBL.[KEY]
WHERE CONTAINS (Location, '"luton*"')
order by KEY_TBL.RANK desc;

唯一的区别是第二个将top_n_by_rank参数设置为100，第一个返回1000+结果，我认为第二个将返回100，但它返回0结果，为什么会这样？我应该如何更改top_n_by_rank参数以确保我只获得最佳结果？

Answer 1

前100个结果可能与"luton*不匹配，并被WHERE子句过滤掉。