MYSQL SELECT子句提供不需要的结果。多个WHERE和语句

我希望这只会给出

is_active=1

的结果，但出于某种原因，它给出了相反的结果。我得到5个结果，所有的

都处于活动状态=0

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我遗漏了什么？

我怀疑您的或/和括号有问题。运算符的优先级会造成混乱

你是说

SELECT `post`.*, `user_account`.`project_name` 
FROM 
`post` 
INNER JOIN `user_account` ON `post`.`user_id` = `user_account`.`user_id` 
WHERE 
`post`.`deleted_at` IS NULL 
AND `is_active` = 1 
AND `deleted_at` IS NULL 
AND `end` > '2013-10-09' 
AND `user_account`.`project_name` LIKE '%intensiivkursus%' 
OR ( 
`title` LIKE '%intensiivkursus%' 
OR `topics` LIKE '%intensiivkursus%' 
OR `target_group` LIKE '%intensiivkursus%' 
OR `lectors` LIKE '%intensiivkursus%' 
OR `timetable` LIKE '%intensiivkursus%' 
) 
GROUP BY 
`post`.`id` 
ORDER BY 
`post`.`created_at` DESC

或许

AND 
(`user_account`.`project_name` LIKE '%intensiivkursus%' 
OR `title` LIKE '%intensiivkursus%' 
OR `topics` LIKE '%intensiivkursus%' 
OR `target_group` LIKE '%intensiivkursus%' 
OR `lectors` LIKE '%intensiivkursus%' 
OR `timetable` LIKE '%intensiivkursus%' 
) 

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@当我有一个或外括号时，我总是检查三次。当然，这可能是需要的，如果您管理运算符的优先级，这是非常有效的，但不是经常这样。是的，谢谢，就是这样。很简单，但确实令人困惑，特别是当你在第26小时醒来时：p

AND `user_account`.`project_name` LIKE '%intensiivkursus%' 
AND ( 
`title` LIKE '%intensiivkursus%' 
OR `topics` LIKE '%intensiivkursus%' 
OR `target_group` LIKE '%intensiivkursus%' 
OR `lectors` LIKE '%intensiivkursus%' 
OR `timetable` LIKE '%intensiivkursus%' 
)