select distinct quantity, standard_cost, sum(a.quantity*a.standard_cost) over(partition by purchase_scence_code,raw_material_code) amount, coalesce(purchase_scence_code,'unknown') as purchase_scence_code, coalesce(raw_material_co
汽车在opendrive车道中的仿真。 构建仿真测试场景的步骤： 第1步： toos-VS Scence Builder. 第2步：
