sql语句查询 一个字段同时满足两个条件

```sql
select rp.role_id from erp_role_permission rp 
inner join  
erp_permission p  
on rp.per_id=p.per_id
where p. per_name="保存权限"   or p. per_name="查询角色"  
 group by rp.role_id 
 having count(rp.role_id)=2