1. 基本用法

select * from user where user_id in (600,601,602);

2. 多个字段同时使用

select * from user where (user_id,type) in ((568,6),(569,6),(600,8));

3. 多表同时多个字段使用

select * from user where (legal_id,type) not in (select a.legal_id,a.type from user as a , role_user_relation as b? where a.legal_id=b.legal_id and a.type=b.legal_type) limit 0,10;