如何使用MySQL FULLTEXT使用OR在多个字段中使用WHERE搜索？

Question

我正在使用mysql FULLTEXT搜索，innodb表引擎。
搜索词：tom

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND category = 100 OR category = 200 ORDER BY seeders DESC LIMIT 0, 30 

上面的查询给550记录，预计记录6

，但如果我搜索每个类别中分别。 在category 100

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND category = 100 ORDER BY seeders DESC LIMIT 0, 30 

搜索给人5记录

和搜索在category 200

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND category = 200 ORDER BY seeders DESC LIMIT 0, 30 

给1记录。

所以我期待记录6，通过结合5 + 1，但我越来越550，即使是那些没有字tom在其中的记录。

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的另一个问题，是 搜索在category或sub_category在相同的查询词tom

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND sub_category = 101 OR category = 200 ORDER BY seeders DESC LIMIT 0, 30 

给550记录。预计记录是6

所以我该如何解决这个问题？

Answer 1

我已找到解决方案。查询应该是

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND (category = 100 OR category = 200) ORDER BY seeders DESC LIMIT 0, 30 

通知，OR运营商在括号

和第二查询问题，使用两个字段搜索或成为

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1 AND (sub_category = 101 OR category = 200) ORDER BY seeders DESC LIMIT 0, 30