Mysql全文索引搜索返回奇怪的結果

Question

我有配料表。我想要所有那些有某些成分的食譜。以下是我的表格結構。

Table(ingredient) - Applied fulltext index on ingredient column. 
------------------------------------------------------ 
ingredientID rcteID ingredient 
    310   1  Mint Leaves  
    311   1  Corriender Leaves 
    312   1  GreenChili 

我想獲取全文搜索查詢下面的以上記錄，但沒有得到該記錄。

SELECT `Ingredient`.`ingredientID` , `Ingredient`.`rcteID` 
FROM `ingredient` AS `Ingredient` 
WHERE MATCH (`Ingredient`.`ingredient`) 
     AGAINST ('+Mint Leaves +Corriender Leaves +Greenchili' IN BOOLEAN MODE) 
AND `Ingredient`.`rcteID` 
IN (1) 
GROUP BY `Ingredient`.`rcteID` 

爲什麼上面的查詢不能用於上述記錄？

當我試着下面的查詢它的工作。只是改變了搜索文本。

SELECT `Ingredient`.`ingredientID` , `Ingredient`.`rcteID` 
FROM `ingredient` AS `Ingredient` 
WHERE MATCH (`Ingredient`.`ingredient`) 
     AGAINST ('+Greenchili +Mint Leaves +Corriender Leaves' IN BOOLEAN MODE) 
AND `Ingredient`.`rcteID` 
IN (1) 
GROUP BY `Ingredient`.`rcteID` 

OUTPUT 
-------------------- 
ingredientID rcteID 
311    1 

不明白髮生了什麼事。爲什麼第一個查詢不返回任何結果而在查詢下面返回結果？

Answer 1

這不是一個真正的解釋，但您可以運行此查詢來查看分數。

SELECT MATCH (`Ingredient`.`ingredient`) 
     AGAINST ('+Mint Leaves +Corriender Leaves +Greenchili' IN BOOLEAN MODE) 
FROM `ingredient` AS `Ingredient` 
WHERE MATCH (`Ingredient`.`ingredient`) 
     AGAINST ('+Mint Leaves +Corriender Leaves +Greenchili' IN BOOLEAN MODE) 

我相信，您的查詢的意思：找到的成分，他們每個人都包含這些薄荷葉，葉Corriender，Greenchili，以及其中全部沒有在您的數據集中發現。 MySQL找不到包含上述所有關鍵字的行。

但是，如果你，但你的查詢到括號，這是一個不同的故事：

SELECT `Ingredient`.`ingredientID` , `Ingredient`.`rcteID` 
FROM `ingredient` AS `Ingredient` 
WHERE MATCH (`Ingredient`.`ingredient`) 
     AGAINST ('(+Greenchili) (+Mint Leaves) (+Corriender Leaves)' IN BOOLEAN MODE) 
AND `Ingredient`.`rcteID` 
IN (1) 
GROUP BY `Ingredient`.`rcteID` 

這種查詢可以被翻譯成：取我的成分含有這些的至少一個：薄荷葉， Corriender葉子，Greenchili並通過rcteID對它們進行分組。

更新：

SELECT t1.rcteID FROM `ingredient` t1 
    JOIN `ingredient` t2 ON t2.rcteID = t1.rcteID 
    JOIN `ingredient` t3 ON t3.rcteID = t2.rcteID 
WHERE 
    MATCH (t1.`ingredient`) AGAINST ('+Greenchili' IN BOOLEAN MODE) 
AND 
    MATCH (t2.`ingredient`) AGAINST ('+Mint Leaves' IN BOOLEAN MODE) 
AND 
    MATCH (t3.`ingredient`) AGAINST ('+Corriender Leaves' IN BOOLEAN MODE) 
AND t1.`rcteID` IN (1) 
GROUP BY t1.`rcteID` 

我覺得這個查詢會爲你工作。基本上，它與你有相同的想法，但它會分別查找3個關鍵字，只能得到包含3個成分的rcteID。