一个人可以同时有多个角色,包含关系
select * from 表
where 1=1
${if(find("a",fine_role)>0,""," and 字段='"+fine_role+"'")}
======
${if(find("a",fine_role)>0,""," and 字段 in ('"+replace(fine_role,",","','")+"')")}