select order_num, prod_id, quantity from OrderItems 
where (prod_id = 'BR01' || prod_id = 'BR02' ||prod_id = 'BR03') 
&& quantity >= 100
order by order_num asc,prod_id asc;

注意：不可以直接 prod_id = 'BR01'，'BR02'，'BR03'，需要关系词连接。