如何使用MySQL FULLTEXT使用OR在多個字段中使用WHERE搜索？

Question

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

上面的查詢給550記錄，預計記錄6

，但如果我搜索每個類別中分別。 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 

搜索給人5記錄

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 

給1記錄。

所以我期待記錄6，通過結合5 + 1，但我越來越550，即使是那些沒有字tom在其中的記錄。

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的另一個問題，是 搜索在category或sub_category在相同的查詢詞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 

給550記錄。預計記錄是6

所以我該如何解決這個問題？

Answer 1

我已找到解決方案。查詢應該是

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運營商在括號

和第二查詢問題，使用兩個字段搜索或成爲

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