如何使用OR在多個字段中與WHERE一起使用mysql FULLTEXT Search？

Question

我正在使用mysql FULLTEXT Search， 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

上面的查詢給出了550條記錄，預期記錄是6

但是，如果我分別搜索每個類別。 在category 100搜索

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

給出5條記錄

並在category 200搜索

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

給出1記錄。

所以我期望通過結合5 + 1來獲得記錄6 ，但是我得到了550，即使那些沒有單詞tom記錄也是如此。

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另一個問題是，在同一查詢中的category或sub_category category中搜索單詞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

給出550條記錄。 預期記錄為6

那么我該如何解決呢？

Answer 1

我找到了解決方案。 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

注意，“ OR運算符放在方括號中

和第二個查詢問題，使用OR在兩個字段中進行搜索成為

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