如何将叶子节点的数据合计到父节点 by Oracle 10g答:如何将叶子节点的数据合计到父节点 by Oracle 10g with tmp as (select 1 as id , null as parentid , '成本' as name , null as amount from dual union all select 2,1 , '工资', null from dual union all select 3,2 , '基本工资', 1000 from dual union all select 4,2 , '...