Question

假设我有1个表只有多列。让我们说：

Fruits
--------------------------------------
id  | name        | country
--------------------------------------
1   | Banana      | china
2   | Orange      | japan
3   | Apple       | japan
4   | Apple       | china
5   | Banana      | usa
6   | Orange      | china

然后简单查询SELECT所有水果id < 6 它是：

SELECT * FROM fruits WHERE id < 6

然后它将返回：

--------------------------------------
id  | name        | country
--------------------------------------
1   | Banana      | china
2   | Orange      | japan
3   | Apple       | japan
4   | Apple       | china
5   | Banana      | usa

然后通过附上上述查询，我怎样才能继续排除更多内容例如：

Do NOT want to see, any "APPLE" from "CHINA".

所以最终结果必须是：

--------------------------------------
id  | name        | country
--------------------------------------
1   | Banana      | china
2   | Orange      | japan
3   | Apple       | japan
5   | Banana      | usa

这又是without行if, name='Apple' AND country='china'的行。

因此，通过继续第一个查询，我如何添加额外的“ AND条件对”才能获得此结果？

我会说：

SELECT * FROM fruits WHERE id < 6 ... AND DON'T RETURN this condition where name='Apple' and country='china' TOGETHER

Answer 1

尝试：

SELECT * 
FROM fruits 
WHERE (id < 6)
AND NOT (name = 'Apple' AND country = 'china')

或者：

SELECT * 
FROM fruits 
WHERE (id < 6)
AND id NOT IN (SELECT id 
               FROM fruits
               WHERE name = 'Apple'
               AND country = 'china')

Answer 2

试试这个

 SELECT * FROM fruits WHERE 
                 (name ,country) not in ( select 'Apple' ,'china' from Fruits)

 HAVING id < 6

DEMO HERE

要筛选多列的MySQL查询？

2 个答案: