求各位写一SQL语句-mysql

求各位大虾写一SQL语句---mysql
tableName: products

products_id language_id text
-------------------------------------------
1 1 xxx
1 2 bbbc
1 3 aa
2 1 xx
3 1 bb
3 3 bbbbs
4 1 zxc
5 1 zxcd
6 1 sda
7 2 xxx
.....................
-------------------------------------------------

要求能够实现：
-->查出 language_id 中不包含2的所有其他产品信息
或者查出 language_id 中不包含3的所有其他产品信息。。。或者不包含1的...


[解决办法]

SQL code

select * from product a where not exists(select 1 from product b where b.product_id = a.product_id and b.language_id = 1)
[解决办法]
探讨

SQL code
select * from product a where not exists(select 1 from product b where b.product_id = a.product_id and b.language_id = 1)