的MySQL不返回預期

Question

我運行下面的查詢

SELECT * FROM (`default_schemes`) 
WHERE `region` = 'Location1' 
OR `region` = 'Location2' 
OR `region` = 'Location3' 
OR `region` = 'Location4' 
OR `region` = 'Location5' 
OR `region` = 'Location6' 
AND `finance` LIKE '%Equity%' 
OR `guidance` LIKE '%Business Mentoring %' 

將匹配的金融和指導，但在什麼設置的所有位置regarless拉，我缺少什麼？

Answer 1

SELECT * FROM `default_schemes` 
WHERE `region` in ('Location1' ,'Location2' ,'Location3' , 'Location4' , 'Location5' ,'Location6') 
AND (`finance` LIKE '%Equity%' 
OR `guidance` LIKE '%Business Mentoring%'); 

Answer 2

也許你想這個...

SELECT * 
    FROM default_schemes 
WHERE region IN('Location1','Location2','Location3','Location4','Location5','Location6') 
    AND (finance LIKE '%Equity%' OR guidance LIKE '%Business Mentoring %'); 

或者，你可能想這...

SELECT * 
    FROM default_schemes 
WHERE (region IN('Location1','Location2','Location3','Location4','Location5','Location6') 
    AND finance LIKE '%Equity%') 
    OR guidance LIKE '%Business Mentoring %'; 

Answer 3

的和運營商比或運營商更高的優先級，這樣的東西如A或B和C或D被解析爲A或（B和C）或D.

將括號添加到適當的位置以獲得th你想要的解釋。

Answer 4

SELECT * FROM (`default_schemes`) 
WHERE `region` IN ('Location1' 
, 'Location2' 
, 'Location3' 
, 'Location4' 
, 'Location5' 
, 'Location6') 
AND (`finance` LIKE '%Equity%' 
OR `guidance` LIKE '%Business Mentoring %') 

您能否請您檢查一下。