Question

我正在运行以下查询

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 %'

哪个会与财务和指导相匹配，但是在所有地点拉不开所设置的内容，我缺少什么？

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

也许你想要这个......

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

或者，你可能想要这个......

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

Answer 3

和运算符的优先级高于or运算符，因此A或B和C或D之类的东西被解析为A或（B和C）或D.

将括号添加到适当的位置以获得所需的解释。

Answer 4

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

请你查一下。

MySQL没有按预期返回

4 个答案: