针对表格行的全文搜索

Question

我试图在给定文本中突出显示最多 2 个单词。搜索关键字来自具有数百个可能匹配项和重要性信息的 mysql 表。

例如：“疯狂的狐狸跳过红牛”

可能匹配的mysql表“单词”：

keyword  importance
bird     0,2
fox      0,5
cow      0,1
red      0,4

查询应该返回 fox 和 red。

类似这样的：

SELECT keyword
from db.words
WHERE keyword matches ('The cracy fox jumps over the red cow')
ORDER BY importance
LIMIT 2

感谢您提供有关如何实现此目的的任何提示！

Answer 1

如果你不介意输出重要性：

SELECT keyword, match(keyword) against ('The cracy fox jumps over the red cow') as importance
from db.words
WHERE match(keyword) against ('The cracy fox jumps over the red cow')
ORDER BY importance
LIMIT 2;

否则，您可以使用子查询：

SELECT keyword
FROM (SELECT keyword, match(keyword) against ('The cracy fox jumps over the red cow') as importance
      from db.words
      WHERE match(keyword) against ('The cracy fox jumps over the red cow')
      ORDER BY importance
      LIMIT 2
     ) k;