Opdagelse af spammere med MySQL

Fuldtekstmatch

Du kunne se på at implementere noget, der ligner MATCH eksempel her :

mysql> SELECT id, body, MATCH (title,body) AGAINST
    -> ('Security implications of running MySQL as root') AS score
    -> FROM articles WHERE MATCH (title,body) AGAINST
    -> ('Security implications of running MySQL as root');
+----+-------------------------------------+-----------------+
| id | body                                | score           |
+----+-------------------------------------+-----------------+
|  4 | 1. Never run mysqld as root. 2. ... | 1.5219271183014 |
|  6 | When configured properly, MySQL ... | 1.3114095926285 |
+----+-------------------------------------+-----------------+
2 rows in set (0.00 sec)

Så for dit eksempel, måske:

SELECT id, MATCH (content) AGAINST ('your string') AS score
FROM messages 
WHERE MATCH (content) AGAINST ('your string')
    AND score > 1;

Bemærk, at for at bruge disse funktioner dit content kolonne skal være en FULLTEXT indeks.

Hvad er score i dette eksempel?

Det er en relevance value . Det beregnes gennem processen beskrevet nedenfor:

Fra dokumentationen side.