首先从全文搜索中获取精确匹配?

本文介绍了首先从全文搜索中获取精确匹配?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在使用以下代码作为示例:

I am using the below code for example:

SELECT *, (MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker')) AS score FROM `example_table` WHERE MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker')) order by score DESC;

但是，即使wm列中存在完全匹配项，但直到第8个结果时，都不会出现完全匹配项.前面的单词也都有短语，但后面还有一些文字.我检查了locn，gns字段，以了解它们之间的比较，没有什么能真正使他人得分更高的突出之处.

However even though EXACT matches exist in the wm column, the EXACT match doesn't appear untiil the 8th result. The ones ahead of it all have the phrase too, but also some following text. I checked the locn, gns fields to see how they compared and nothing really stands out that should make the others score higher.

我阅读了有关使用BOOLEAN MODE的内容，但是在那儿读到的东西似乎都不能满足我的需求.

I did some reading about using BOOLEAN MODE but nothing I read there seemed like it would help my needs.

推荐答案

好吧，如果这可以帮助其他人实现此目标，我就可以做到:

Ok, if this helps anyone else I was able to achieve what I wanted by doing this:

SELECT *,
  CASE WHEN wm = 'foot locker' THEN 1 ELSE 0 END AS score,
  MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker') AS score2
FROM
  `example_table`
WHERE
  MATCH (`wm`, `locn`, `gns`) AGAINST('foot locker'))
ORDER BY
  score DESC, score2 DESC;

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